SBVS025G – SEPTEMBER 2001 – REVISED SEPTEMBER 2005
DMOS
1A Low-Dropout Regulator
FEATURES
● NEW DMOS TOPOLOGY:
Ultra Low Dropout Voltage:
230mV typ at 1A and 3.3V Output
Output Capacitor NOT Required for Stability
● FAST TRANSIENT RESPONSE
● VERY LOW NOISE: 33µV
RMS
● HIGH ACCURACY: ±2% max
● HIGH EFFICIENCY:
I
= 1.7mA at I
GND
Not Enabled: I
OUT
= 0.5µA
GND
= 1A
● 2.5V, 2.7V, 3.0V, 3.3V, 5.0V AND
ADJUSTABLE OUTPUT VERSIONS
● THERMAL PROTECTION
● SMALL SURFACE-MOUNT PACKAGES:
SOT223-5, DDPAK-5
APPLICATIONS
● PORTABLE COMMUNICATION DEVICES
● BATTERY-POWERED EQUIPMENT
● MODEMS
● BAR-CODE SCANNERS
● BACKUP POWER SUPPLIES
DESCRIPTION
The REG104 is a family of low-noise, low-dropout linear
regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs,
including low dropout voltage (only 230mV typ at full load),
and better transient performance. In addition, no output
capacitor is required for stability, unlike conventional low
dropout regulators that are difficult to compensate and
require expensive low ESR capacitors greater than 1µF.
Typical ground pin current is only 1.7mA (at I
drops to 0.5µA in
not enabled
mode. Unlike regulators with
PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions.
The REG104 has very low output noise (typically 33µV
for V
= 3.3V with CNR = 0.01µF), making it ideal for use
OUT
in portable communications equipment. On-chip trimming
results in high output voltage accuracy. Accuracy is maintained over temperature, line, and load variations. Key parameters are tested over the specified temperature range
(–40°C to +85°C).
The REG104 is well protected—internal circuitry provides a
current limit which protects the load from damage. Thermal
protection circuitry keeps the chip from being damaged by
excessive temperature. The REG104 is available in the
DDPAK-5 and the SOT223-5.
= 1A) and
OUT
RMS
Enable
V
IN
+
0.1µF
NR
NR = Noise Reduction
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability.
....................................................... –0.3V to V
EN
.............................................................–0.3V to 6.0V
NR
to GND) ..................................................... 1.5kV
OUT
(1)
IN
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
PRODUCTV
REG104xx-
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com.
yyyy/zzz
(1)
OUT
XX is package designator.
YYYY is typical output voltage (5 = 5.0V, 2.85 = 2.85V, A = Adjustable).
ZZZ is package quantity.
PIN CONFIGURATIONS
Top View
DDPAK-5
1234
V
Gnd
O
(1)
NR/Adjust
(KTT Package)
Tab is Gnd
5
V
IN
Enable
NOTE: (1) For REG104A-A: voltage setting resistor pin.
All other models: noise reduction capacitor pin.
SOT223-5
Tab is Gnd
12345
Enable
GndV
IN
V
OUT
(DCQ Package)
NR/Adjust
(1)
2
REG104
SBVS025G
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range, TJ = –40°C to +85°C
f = 10Hz to 100kHzV
Without CNR (all models)CNR = 0, C
With C
OUTPUT CURRENT
Current Limit
(all fixed voltage models)CNR = 0.01µF, C
NR
(4)
= –40°C to +85°C1.02.2A
T
J
n
I
CL
= 035µV
OUT
= 10µF10µV
OUT
1.21.72.1A
RIPPLE REJECTION
f = 120Hz65dB
ENABLE CONTROL
V
High (output enabled)V
ENABLE
Low (output disabled)–0.20.5V
V
ENABLE
I
High (output enabled)I
ENABLE
Low (output disabled)V
I
ENABLE
Output Disable Time50µs
ENABLE
ENABLE
V
= 2V to VIN, VIN = 2.1V to 6.5
ENABLE
= 0V to 0.5V2100nA
ENABLE
(5)
2V
Output Enable Softstart Time1.5ms
THERMAL SHUTDOWN
Junction Temperature
Shutdown150°C
Reset from Shutdown130°C
GROUND PIN CURRENT
Ground Pin CurrentI
GND
Enable Pin LowV
INPUT VOLTAGEV
Operating Input Voltage Range
(6)
IN
Specified Input Voltage RangeV
= –40°C to +85°CV
T
J
I
= 10mA0.50.7mA
OUT
= 1A1.71.8mA
I
OUT
≤ 0.5V0.5µA
ENABLE
2.115V
> 2.7VV
IN
> 2.9VV
IN
+ 0.715V
OUT
+ 0.915V
OUT
TEMPERATURE RANGE
Specified RangeT
Operating Range–55+125°C
J
–40+85°C
Storage Range–65+150°C
Thermal Resistance
DDPAK-5 Surface Mount
SOT223-5 Surface Mount
θ
JC
θ
JC
Junction-to-Case4°C/W
Junction-to-Case15°C/W
NOTES: (1) The REG104 does not require a minimum output capacitor for stability. However, transient response can be improved with proper capacitor selection.
(2) Dropout voltage is defined as the input voltage minus the output voltage that produces a 2% change in the output voltage from the value at V
at fixed load.
(3) Not applicable for V
(4) Current limit is the output current that produces a 15% change in output voltage from V
(5) For V
(6) The REG104 no longer regulates when V
> 6.5V, see typical characteristic
IN
to V
is typically less than 1Ω at TJ = +25°C. See typical characteristic
OUT
less than 2.7V.
OUT
V
ENABLE
< V
IN
OUT
vs I
+ V
ENABLE
= V
+ 1V and I
IN
.
. In drop-out or when the input voltage is between 2.7V and 2.1V, the impedance from V
DROP (MAX)
Output Voltage Change vs V
OUT
OUT
.
IN
(1)
= 0.1µF
, unless otherwise noted.
REG104GA
REG104FA
5.5V
1.295V
0.21µA
/V • V
RMS
OUT
/V • V
RMS
OUT
IN
1100nA
= 10mA.
µV
RMS
µV
RMS
V
= V
+ 1V
IN
OUT
IN
REG104
SBVS025G
3
TYPICAL CHARACTERISTICS
For all models, at TJ = +25°C and V
= 2V, unless otherwise noted.
ENABLE
0.8
0.6
0.4
OUTPUT VOLTAGE CHANGE vs I
(VIN = V
+ 1V, Output Voltage % Change
OUT
Referred to I
= 10mA at +25°C)
OUT
+125°C
OUT
0.2
0
–0.2
+25°C
–0.4
–0.6
–0.8
Output Voltage Change (%)
–55°C
–1
–1.2
0200100600500400300700 800 900 1000
Output Current (mA)
0.5
OUTPUT VOLTAGE CHANGE vs V
(Output Voltage % Change Referred to
V
= V
I
OUT
= 10mA
+ 1V at I
IN
OUT
= 10mA)
OUT
I
OUT
= 200mA
IN
0
I
= 1000mA
–0.5
OUT
–1
–1.5
Output Voltage Change (%)
–2
026841012
Input Voltage Above V
OUT
(V)
350
DC DROPOUT VOLTAGE vs I
OUT
300
250
+125°C
200
150
100
DC Dropout Voltage (mV)
50
0
02006004008001000
I
(mA)
OUT
OUTPUT VOLTAGE CHANGE vs I
(Output Voltage % Change Referred to
I
= 10mA at +25°C)
I
OUT
OUT
= 10mA
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
Output Voltage (%)
I
= 1000mA
OUT
–0.8
–1
–1.2
–60 –40 –20406002010080120
Temperature (°C)
OUT
I
= 200mA
OUT
+25°C
–55°C
350
DC DROPOUT VOLTAGE vs TEMPERATURE
300
I
= 1000mA
OUT
250
200
150
100
DC Dropout Voltage (mV)
50
0
–75–50–252550010075125
I
OUT
= 200mA
I
OUT
= 10mA
Temperature (°C)
4
LINE REGULATION vs TEMPERATURE
= V
IN
+ 1V to 16V)
OUT
0.5
(V
0.4
0.3
I
= 10mA
OUT
0.2
0.1
Output Voltage Change (%)
I
OUT
= 200mA
0
–75–50–252550010075125
Temperature (°C)
REG104
SBVS025G
TYPICAL CHARACTERISTICS (Cont.)
6V
V
IN
V
OUT
V
OUT
5V
50mV/div50mV/div
50µs/div
LINE TRANSIENT RESPONSE
C
OUT
= 10µF
C
OUT
= 0
REG104-3.3
I
OUT
= 200mA
For all models, at TJ = +25°C and V
LOAD TRANSIENT RESPONSE
500mV/div500mV/div
= 2V, unless otherwise noted.
ENABLE
REG104-3.3
C
= 0
OUT
C
= 10µF
OUT
V
OUT
V
OUT
1A
10mA
10mA
C
500mV/div500mV/div
1A
REG104–A
= 0.01µF, V
FB
10µs/div
LOAD TRANSIENT RESPONSE
= 3.3V
OUT
C
= 0
OUT
C
= 10µF
OUT
10µs/div
I
I
LOAD
LOAD
Load = 200mA, C
50mV/div50mV/div
6V
5V
LOAD TRANSIENT RESPONSE
REG104–A
FB
C
OUT
C
OUT
= 0.01µF, V
= 0
= 10µF
OUT
= 3.3V
50µs/div
V
IN
LOAD REGULATION vs TEMPERATURE
= V
(V
0.5
IN
0.4
0.3
0.2
0.1
Output Voltage Change (%)
0
–60 –40 –20406002010080120
REG104
SBVS025G
+ 1V and 10mA < I
OUT
Temperature (°C)
< 1000mA)
OUT
10
OUTPUT NOISE DENSITY
5
2
1
0.5
0.2
CNR = 0
C
OUT
C
= 0.01µF
NR
C
OUT
= 0
= 10µF
Noise Density (µV/√Hz)
0.1
0.05
0.02
0.01
10100100010000100,000
Frequency (Hz)
5
TYPICAL CHARACTERISTICS (Cont.)
For all models, at TJ = +25°C and V
= 2V, unless otherwise noted.
ENABLE
1.8
GROUND PIN CURRENT vs TEMPERATURE
I
= 1000mA
1.6
OUT
1.4
1.2
(mA)
1
GND
I
0.8
0.6
I
OUT
I
OUT
= 200mA
= 10mA
0.4
–60 –40 –20020406080120100
Temperature (°C)
GROUND PIN CURRENT vs I
1.6
1.4
1.2
(mA)
1
GND
I
0.8
0.6
OUT
GROUND PIN CURRENT, NOT ENABLED
vs TEMPERATURE
3
V
= 0V
ENABLE
2.5
2
(µA)
1.5
GND
I
1
0.5
0
–75–50–250255075100125
Temperature (°C)
vs TEMPERATURE
I
0.28
0.26
ADJUST
REG104-A
0.24
0.22
0.20
0.18
Adjust Pin Current (µA)
0.16
0.4
1100101000
I
(mA)
OUT
CURRENT LIMIT vs TEMPERATURE
1850
V
= V
OUT
OUT-NOMINAL
1800
1750
V
= 1V
OUT
1700
1650
Current Limit (mA)
1600
1550
–60 –40 –20406002010080120
Temperature (°C)
• 0.90
0.14
–20–4004080120–602060100140
Temperature (°C)
RIPPLE REJECTION vs FREQUENCY
70
60
50
C
OUT
40
Ripple Rejection (dB)
30
20
101001k10k100k
Frequency (Hz)
= 10µF
C
OUT
= 0
6
REG104
SBVS025G
TYPICAL CHARACTERISTICS (Cont.)
OUTPUT VOLTAGE DRIFT HISTOGRAM
Percent of Units (%)
V
OUT
Drift (ppm/°C)
40 45 50 55 60 65 70 75 80 85 90
45
40
35
30
25
20
15
10
5
0
For all models, at TJ = +25°C and V
= 2V, unless otherwise noted.
ENABLE
75
RIPPLE REJECTION vs I
V
70
RIPPLE
OUT
= 3Vp-p, f = 120Hz
65
60
55
50
Ripple Rejection (dB)
45
40
02004006008001000
I
(mA)
OUT
OUTPUT DISABLE TIME
= 0
C
OUT
1V/div
SOFT START
V
1V/div
2VV
OUT
ENABLE
0
250µs/div
V
OUT
2V
0
REG104
SBVS025G
10µs/div
V
ENABLE
OUTPUT VOLTAGE ACCURACY HISTOGRAM
60
50
40
30
20
Percent of Units (%)
10
0
–1 –0.8 –0.6 –0.4 –0.2 00.2 0.4 0.6 0.81
Error (%)
7
BASIC OPERATION
The REG104 series is a family of LDO (Low DropOut) linear
regulators. The family includes five fixed output versions
(2.5V to 5.0V) and an adjustable output version. An internal
DMOS power device provides low dropout regulation with
near constant ground pin current (largely independent of load
and dropout conditions) and very fast line and load transient
response. All versions include internal current limit and
thermal shutdown circuitry.
Figure 1 shows the basic circuit connections for the fixed
voltage models. Figure 2 gives the connections for the
adjustable output version (REG104A) and example resistor
values for some commonly used output voltages. Values for
other voltages can be calculated from the equation shown in
Figure 2.
Enable
V
IN
0.1µF
REG104
InOut
GndNR
C
0.01µF
NR
V
OUT
C
OUT
None of the versions require an output capacitor for regulator
stability. The REG104 will accept any output capacitor type
less than 1µF. For capacitance values larger than 1µF the
effective ESR should be greater than 0.1Ω. This minimum
ESR value includes parasitics such as printed circuit board
traces, solder joints, and sockets. A minimum 0.1µF low ESR
capacitor connected to the input supply voltage is recommended.
ENABLE
The Enable pin allows the regulator to be turned on and off.
This pin is active HIGH and compatible with standard TTLCMOS levels. Inputs below 0.5V (max) turn the regulator off
and all circuitry is disabled. Under this condition ground-pin
current drops to approximately 0.5µA.
When not used, the Enable pin may be connected to V
Internal to the part, the Enable pin is connected to an input
resistor-zener diode circuit, as shown in Figure 3, creating a
nonlinear input impedance.
Enable
175kΩ
V
= 10V
Z
IN
.
Optional
FIGURE 1. Fixed Voltage Nominal Circuit for REG104.
Enable
5
V
IN
0.1µF
Pin numbers for SOT-223 package.
1
REG104
V
= (1 + R1/R2) • 1.295V
OUT
To reduce current through divider, increase resistor
values (see table at right).
As the impedance of the resistor divider increases,
I
(~200nA) may introduce an error.
ADJ
C
improves noise and transient response.
FB
2
R
Adj
R
1
2
I
ADJ
4
3
Gnd
C
FB
0.01µF
FIGURE 3. Enable Pin Equivalent Input Circuit.
EXAMPLE RESISTOR VALUES
V
(V)R1 (Ω)
OUT
1.295ShortOpen
2.512.1k13k
316.9k13k
3.320k13k
537.4k13k
NOTE: (1) Resistors are standard 1% values.
(1)
R2 (Ω)
1.21k1.3k
1.69k1.3k
2.0k1.3k
3.74k1.3k
C
OUT
Optional
Load
V
OUT
(1)
FIGURE 2. Adjustable Voltage Circuit for REG104A.
8
REG104
SBVS025G
The Enable Pin Current versus Applied Voltage relationship
is shown in Figure 4. When the Enable pin is connected to
V
greater than 10V, a series resistor may be used to limit
IN
the current.
100
10
1
Since the value of V
is 1.295V, this relationship reduces to:
REF
V
µ
V
=
N
RMS
V
V
•35
OUT
Connecting a capacitor, CNR, from the Noise-Reduction (NR)
pin to ground can reduce the output noise voltage. Adding
C
, as shown in Figure 5, forms a low-pass filter for the
NR
voltage reference. For C
= 10nF, the total noise in the
NR
10Hz to 100kHz bandwidth is reduced by approximately
a factor of 3.5. This noise reduction effect is shown in
Figure 6.
0.1
Enable Current (µA)
0.01
0.001
0246810121416
Enable Voltage
FIGURE 4. Enable Pin Current versus Applied Voltage.
OUTPUT NOISE
A precision band-gap reference is used for the internal
reference voltage, V
the dominant noise source within the REG104. It generates
approximately 45µV
the reference output. The regulator control loop gains up the
reference noise, so that the noise voltage of the regulator is
approximately given by:
VV
=µ
N
, for the REG104. This reference is
REF
in the 10Hz to 100kHz bandwidth at
RMS
RR
+
12
=µ•45
45
RMSRMS
2
R
V
V
V
OUT
REF
45
35
10Hz - 100kHz)
RMS
Output Noise Voltage
(µV
25
0.0010.010.11
CNR (µF)
REG104-3.3
C
= 0
OUT
C
= 10µF
OUT
FIGURE 6. Output Noise versus Noise Reduction Capacitor.
The REG104 adjustable version does not have the noisereduction pin available, however, the adjust pin is the
summing junction of the error amplifier. A capacitor, C
V
IN
FB
,
NR
(fixed output
versions only)
C
NR
(optional)
Enable
FIGURE 5. Block Diagram.
REG104
SBVS025G
V
REF
(1.295V)
Low Noise
Charge Pump
Over Current
Over Temp
Protection
DMOS
Output
REG104
V
OUT
R
1
Adj
(Adjustable
R
Versions)
2
NOTE: R1 and R2 are internal
on fixed output versions.
9
connected from the output to the adjust pin will reduce both
the output noise and the peak error from a load transient.
Figure 7 shows improved output noise performance for two
capacitor combinations.
10.0
1.0
nV/√Hz
C
= 0, CFB = 0
OUT
C
= 0, CFB = 0.01µF
OUT
C
= 10µF, CFB = 0.01µF
0.1
OUT
10010100010000100000
Frequency
FIGURE 7. Output Noise Density on Adjustable Versions.
The REG104 utilizes an internal charge pump to develop an
internal supply voltage sufficient to drive the gate of the
DMOS pass element above V
. The charge-pump switching
IN
noise (nominal switching frequency = 2MHz) is not measurable at the output of the regulator.
DROP-OUT VOLTAGE
The REG104 uses an N-channel DMOS as the
ment. When the input voltage is within a few hundred
millivolts of the output voltage, the DMOS device behaves
like a resistor. Therefore, for low values of V
regulator’s input-to-output resistance is the Rds
DMOS pass element (typically 230mΩ). For static (DC)
loads, the REG104 will typically maintain regulation down to
V
IN
to V
voltage drop of 230mV at full rated output current.
OUT
In Figure 8, the bottom line (DC dropout) shows the minimum
V
to V
IN
voltage drop required to prevent dropout under
OUT
DC load conditions.
250
200
150
100
Drop Out Voltage (mV)
50
0
0100200300400500
REG104 –3.3 at 25°C
DC
Transient
I
OUT
(mA)
IN
to V
pass
OUT
of the
ON
ele-
, the
For large step changes in load current, the REG104 requires
a larger voltage drop across it to avoid degraded transient
response. The boundary of this
shown as the top line in Figure 8. Values of V
transient dropout
region is
to V
IN
OUT
voltage drop above this line insure normal transient response.
In the transient dropout region between
DC
and
Transient
transient response recovery time increases. The time required to recover from a load transient is a function of both
the magnitude and rate of the step change in load current
and the available
worst-case conditions (full-scale load change with V
V
voltage drop close to DC dropout levels), the REG104
OUT
headroom
VIN to V
voltage drop. Under
OUT
to
IN
can take several hundred microseconds to re-enter the
specified window of regulation.
TRANSIENT RESPONSE
The REG104 response to transient line and load conditions
improves at lower output voltages. The addition of a capacitor (nominal value 10nF) from the output pin to ground may
improve the transient response. In the adjustable version, the
addition of a capacitor, C
(nominal value 10nF), from the
FB
output to the adjust pin will also improve the transient
response.
THERMAL PROTECTION
Power dissipated within the REG104 will cause the junction
temperature to rise. The REG104 has thermal shutdown
circuitry that protects the regulator from damage. The thermal protection circuitry disables the output when the junction temperature reaches approximately 150°C, allowing
the device to cool. When the junction temperature cools to
approximately 130°C, the output circuitry is again enabled.
Depending on various conditions, the thermal protection
circuit may cycle on and off. This limits the dissipation of the
regulator, but may have an undesirable effect on the load.
Any tendency to activate the thermal protection circuit indicates excessive power dissipation or an inadequate heat
sink. For reliable operation, junction temperature should be
limited to 125°C, maximum. To estimate the margin of safety
in a complete design (including heat sink), increase the
ambient temperature until the thermal protection is triggered.
Use worst-case loads and signal conditions. For good reliability, thermal protection should trigger more than 35°C
above the maximum expected ambient condition of your
application. This produces a worst-case junction temperature
of 125°C at the highest expected ambient temperature and
worst-case load.
The internal protection circuitry of the REG104 has been
designed to protect against overload conditions. It was not
intended to replace proper heat sinking. Continuously running the REG104 into thermal shutdown will degrade reliability.
,
FIGURE 8. Transient and DC Dropout.
10
REG104
SBVS025G
POWER DISSIPATION
5
4
3
2
1
0
Power Dissipation (Watts)
0255075125100
Ambient Temperature (°C)
CONDITIONS
#1
#2
#3
#4
The REG104 is available in two different package configurations. The ability to remove heat from the die is different for
each package type and, therefore, presents different considerations in the printed circuit board (PCB) layout. The PCB
area around the device that is free of other components
moves the heat from the device to the ambient air. While it
is difficult to impossible to quantify all of the variables in a
thermal design of this type, performance data for several
configurations are shown in Figure 9. In all cases the PCB
copper area is bare copper, free of solder resist mask, and
not solder plated. All examples are for 1-ounce copper. Using
heavier copper will increase the effectiveness in moving the
heat from the device. In those examples where there is
copper on both sides of the PCB, no connection has been
provided between the two sides. The addition of plated
through holes will improve the heat sink effectiveness.
Power dissipation depends on input voltage and load conditions. Power dissipation is equal to the product of the average output current times the voltage across the output
element, V
Power dissipation can be minimized by using the lowest
possible input voltage necessary to assure the required
output voltage.
IN
to V
voltage drop.
OUT
PVV I
=•(–)
DIN
OUTOUT AVG
()
CONDITIONPACKAGEPCB AREA
1DDPAK4in2 Top Side Only27°C/W
2SOT-2234in2 Top Side Only53°C/W
3DDPAKNone65°C/W
4SOT-2230.5in
2
Top Side Only110°C/W
θ
JA
FIGURE 9. Maximum Power Dissipation versus Ambient
Temperature for the Various Packages and
PCB Heat Sink Configurations.
REG104
SBVS025G
11
REGULATOR MOUNTING
The tab of both packages is electrically connected to ground.
For best thermal performance, the tab of the DDPAK surface-mount version should be soldered directly to a circuitboard copper area. Increasing the copper area improves
heat dissipation. Figure 10 shows typical thermal resistance
from junction to ambient as a function of the copper area for
the DDPAK. Figure 11 shows the same relationship for the
SOT-223.
THERMAL RESISTANCE vs PCB COPPER AREA
50
40
(°C/W)
JA
30
20
10
Thermal Resistance, θ
0
012345
Copper Area (inches
REG104
Surface Mount Package
1 oz. copper
2
)
Although the tabs of the DDPAK and the SOT-223 are
electrically grounded, they are not intended to carry any
current. The copper pad that acts as a heat sink should be
isolated from the rest of the circuit to prevent current flow
through the device from the tab to the ground pin. Solder pad
footprint recommendations for the various REG104 devices
are presented in the Application Bulletin
mendations for Surface-Mount Devices
Solder Pad Recom-
(SBFA015A), avail-
able from the Texas Instruments web site (www.ti.com).
Circuit Board Copper Area
DDPAK Surface Mount Package
REG104
FIGURE 10. Thermal Resistance versus PCB Area for the Five-Lead DDPAK.
180
160
140
(°C/W)
JA
120
θ
100
Thermal Resistance,
THERMAL RESISTANCE vs PCB COPPER AREA
REG104
Surface Mount Package
1 oz. copper
80
60
40
20
0
012345
Copper Area (inches
2
)
FIGURE 11. Thermal Resistance versus PCB Area for the Five Lead SOT-223.
Circuit Board Copper Area
REG104
SOT-223 Surface Mount Package
12
REG104
SBVS025G
PACKAGE OPTION ADDENDUM
www.ti.com
PACKAGING INFORMATION
Orderable DeviceStatus
REG104FA-2.5OBSOLETEDDPAK/
REG104FA-2.5/500NRNDDDPAK/
REG104FA-2.5KTTTNRNDDDPAK/
REG104FA-2.7OBSOLETEDDPAK/
REG104FA-2.7/500ACTIVEDDPAK/
REG104FA-2.7/500G3ACTIVEDDPAK/
REG104FA-2.7KTTTACTIVEDDPAK/
REG104FA-3OBSOLETEDDPAK/
REG104FA-3.3OBSOLETEDDPAK/
REG104FA-3.3/500ACTIVEDDPAK/
REG104FA-3.3KTTTACTIVEDDPAK/
REG104FA-3/500NRNDDDPAK/
REG104FA-3/500G3ACTIVEDDPAK/
REG104FA-3KTTTNRNDDDPAK/
REG104FA-5OBSOLETEDDPAK/
REG104FA-5/500ACTIVEDDPAK/
REG104FA-5KTTTACTIVEDDPAK/
REG104FA-AOBSOLETEDDPAK/
REG104FA-A/500ACTIVEDDPAK/
REG104FA-AKTTTACTIVEDDPAK/
REG104GA-2.5NRNDSOPDCQ678Green (RoHS &
REG104GA-2.5/2K5NRNDSOPDCQ62500 Green (RoHS &
REG104GA-2.7ACTIVESOPDCQ678Green (RoHS &
REG104GA-2.7/2K5ACTIVESOPDCQ62500 Green (RoHS &
REG104GA-2.7/2K5G4ACTIVESOPDCQ62500 Green (RoHS &
(1)
Package
Type
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
Package
Drawing
KTT5TBDCall TICall TI
KTT5500 Green (RoHS &
KTT550Green (RoHS &
KTT5TBDCall TICall TI
KTT5500 Green (RoHS &
KTT5500 Green (RoHS &
KTT550Green (RoHS &
KTT5TBDCall TICall TI
KTT5TBDCall TICall TI
KTT5500 Green (RoHS &
KTT550Green (RoHS &
KTT5500 Green (RoHS &
KTT5500 Green (RoHS &
KTT550Green (RoHS &
KTT5TBDCall TICall TI
KTT5500 Green (RoHS &
KTT550Green (RoHS &
KTT5TBDCall TICall TI
KTT5500 Green (RoHS &
KTT550Green (RoHS &
Pins Package
Qty
Eco Plan
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
(2)
Lead/Ball Finish MSL Peak Temp
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
22-Sep-2005
(3)
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable DeviceStatus
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
REG104GA-2.7G4ACTIVESOPDCQ678Green (RoHS &
Lead/Ball Finish MSL Peak Temp
Call TILevel-2-260C-1 YEAR
22-Sep-2005
(3)
no Sb/Br)
REG104GA-3NRNDSOPDCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-3.3ACTIVESOPDCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-3.3/2K5ACTIVESOPDCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-3.3/2K5G4ACTIVESOPDCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-3/2K5NRNDSOPDCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-3/2K5G4ACTIVESOPDCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-5ACTIVESOPDCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-5/2K5ACTIVESOPDCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-5/2K5G4ACTIVESOPDCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-AACTIVESOPDCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-A/2K5ACTIVESOPDCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-A/2K5G4ACTIVESOPDCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
Addendum-Page 2
PACKAGE OPTION ADDENDUM
www.ti.com
to Customer on an annual basis.
22-Sep-2005
Addendum-Page 3
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable DeviceStatus
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead/Ball Finish MSL Peak Temp
27-Sep-2005
(3)
REG104GA-3NRNDSOPDCQ678TBDCall TICall TI
REG104GA-3.3ACTIVESOPDCQ678TBDCall TICall TI
REG104GA-3.3/2K5ACTIVESOPDCQ62500TBDCall TICall TI
REG104GA-3.3/2K5G4ACTIVESOPDCQ62500TBDCall TICall TI
REG104GA-3/2K5NRNDSOPDCQ62500TBDCall TICall TI
REG104GA-3/2K5G4ACTIVESOPDCQ62500TBDCall TICall TI
REG104GA-5ACTIVESOPDCQ678TBDCall TICall TI
REG104GA-5/2K5ACTIVESOPDCQ62500TBDCall TICall TI
REG104GA-5/2K5G4ACTIVESOPDCQ62500TBDCall TICall TI
REG104GA-AACTIVESOPDCQ678TBDCall TICall TI
REG104GA-A/2K5ACTIVESOPDCQ62500TBDCall TICall TI
REG104GA-A/2K5G4ACTIVESOPDCQ62500TBDCall TICall TI
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 2
PACKAGE OPTION ADDENDUM
www.ti.com
PACKAGING INFORMATION
Orderable DeviceStatus
REG104FA-2.5OBSOLETEDDPAK/
REG104FA-2.5/500NRNDDDPAK/
REG104FA-2.5KTTTNRNDDDPAK/
REG104FA-2.7OBSOLETEDDPAK/
REG104FA-2.7KTTTACTIVEDDPAK/
REG104FA-3OBSOLETEDDPAK/
REG104FA-3.3OBSOLETEDDPAK/
REG104FA-3.3/500ACTIVEDDPAK/
REG104FA-3.3KTTTACTIVEDDPAK/
REG104FA-3/500NRNDDDPAK/
REG104FA-3/500G3ACTIVEDDPAK/
REG104FA-3KTTTNRNDDDPAK/
REG104FA-3KTTTG3ACTIVEDDPAK/
REG104FA-5OBSOLETEDDPAK/
REG104FA-5/500ACTIVEDDPAK/
REG104FA-5/500G3ACTIVEDDPAK/
REG104FA-5KTTTACTIVEDDPAK/
REG104FA-AOBSOLETEDDPAK/
REG104FA-A/500ACTIVEDDPAK/
REG104FA-AKTTTACTIVEDDPAK/
REG104GA-2.5NRNDSOT-223DCQ678Green (RoHS &
REG104GA-2.5/2K5NRNDSOT-223DCQ62500 Green (RoHS &
REG104GA-2.5G4ACTIVESOT-223DCQ678Green (RoHS &
REG104GA-2.7ACTIVESOT-223DCQ678Green (RoHS &
REG104GA-2.7G4ACTIVESOT-223DCQ678Green (RoHS &
(1)
Package
Type
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
TO-263
Package
Drawing
KTT5TBDCall TICall TI
KTT5500 Green (RoHS &
KTT550Green (RoHS &
KTT5TBDCall TICall TI
KTT550Green (RoHS &
KTT5TBDCall TICall TI
KTT5TBDCall TICall TI
KTT5500 Green (RoHS &
KTT550Green (RoHS &
KTT5500 Green (RoHS &
KTT5500 Green (RoHS &
KTT550Green (RoHS &
KTT550Green (RoHS &
KTT5TBDCall TICall TI
KTT5500 Green (RoHS &
KTT5500 Green (RoHS &
KTT550Green (RoHS &
KTT5TBDCall TICall TI
KTT5500 Green (RoHS &
KTT550Green (RoHS &
Pins Package
Qty
Eco Plan
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
no Sb/Br)
(2)
Lead/Ball Finish MSL Peak Temp
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
28-Nov-2005
(3)
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable DeviceStatus
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
REG104GA-3NRNDSOT-223DCQ678Green (RoHS &
(2)
Lead/Ball Finish MSL Peak Temp
Call TILevel-2-260C-1 YEAR
28-Nov-2005
(3)
no Sb/Br)
REG104GA-3.3ACTIVESOT-223DCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-3.3/2K5ACTIVESOT-223DCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-3.3/2K5G4ACTIVESOT-223DCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-3.3G4ACTIVESOT-223DCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-3/2K5G4ACTIVESOT-223DCQ6TBDCall TICall TI
REG104GA-3G4ACTIVESOT-223DCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-5ACTIVESOT-223DCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-5/2K5ACTIVESOT-223DCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-5/2K5G4ACTIVESOT-223DCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-5G4ACTIVESOT-223DCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-AACTIVESOT-223DCQ678Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-A/2K5ACTIVESOT-223DCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
REG104GA-A/2K5G4ACTIVESOT-223DCQ62500 Green (RoHS &
Call TILevel-2-260C-1 YEAR
no Sb/Br)
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
Addendum-Page 2
PACKAGE OPTION ADDENDUM
www.ti.com
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
28-Nov-2005
Addendum-Page 3
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty . Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. To minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process
in which TI products or services are used. Information published by TI regarding third-party products or services
does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.
Use of such information may require a license from a third party under the patents or other intellectual property
of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction
of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for
such altered documentation.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that
product or service voids all express and any implied warranties for the associated TI product or service and
is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.
Following are URLs where you can obtain information on other Texas Instruments products and application
solutions:
ProductsApplications
Amplifiersamplifier.ti.comAudiowww.ti.com/audio
Data Convertersdataconverter.ti.comAutomotivewww.ti.com/automotive
DSPdsp.ti.comBroadbandwww.ti.com/broadband
Interfaceinterface.ti.comDigital Controlwww.ti.com/digitalcontrol
Logiclogic.ti.comMilitarywww.ti.com/military
Power Mgmtpower.ti.comOptical Networkingwww.ti.com/opticalnetwork
Microcontrollersmicrocontroller.ti.comSecuritywww.ti.com/security
Telephonywww.ti.com/telephony
Video & Imagingwww.ti.com/video
Wirelesswww.ti.com/wireless
Mailing Address:Texas Instruments
Post Office Box 655303 Dallas, Texas 75265
Copyright 2005, Texas Instruments Incorporated
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