TEXAS INSTRUMENTS REG104 Technical data

REG

104

REG104

查询REG104供应商查询REG104供应商

REG104

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.

REG104

(Fixed Voltage

Versions)

Gnd

V

+

C

OUT

(1)

NOTE: (1) Optional.

V

IN

www.ti.com

Enable

V

OUT

+

0.1µF

REG104-A

Gnd

R Adj R

+

1

2

(1)

C

OUT

ABSOLUTE MAXIMUM RATINGS

Supply Input Voltage, VIN.......................................................–0.3V to 16V

Enable Input Voltage, V

Feedback Voltage, VFB........................................................ –0.3V to 6.0V

NR Pin Voltage, V

Output Short-Circuit Duration ......................................................Indefinite

Operating Temperature Range ....................................... –55°C to +125°C

Storage Temperature Range .......................................... –65°C to +150°C

Junction Temperature ..................................................... –55°C to +150°C

Lead Temperature (soldering, 3s, SOT, and DDPAK)................... +240°C

ESD Rating: HBM (V

HBM (All other pins)........................................................ 2kV

CDM.............................................................................. 500V

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

PRODUCT V

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

At TJ = +25°C, VIN = V

OUT

+ 1V (V

= 3.0V for REG104-A), V

OUT

ENABLE

= 2V, I

= 10mA, CNR = 0.01µF, and C

OUT

PARAMETER CONDITION MIN TYP MAX UNITS OUTPUT VOLTAGE

Output Voltage Range V

REG104-2.5 2.5 V

OUT

REG104-2.7 2.7 V REG104-3.0 3.0 V REG104-3.3 3.3 V REG104-5 5V REG104-A V

Reference Voltage V Adjust Pin Current I

Accuracy ±0.5 ±2%

= –40°C to +85°C ±3.0 %

T

J

vs Temperature dV

vs Line and Load I

= –40°C to +85°CV

T

J

DC DROPOUT VOLTAGE

(2, 3)

For all models except 5V I For 5V model I

For all models except 5V I

= –40°C to +85°C

T

J

For 5V models I

= –40°C to +85°C

T

J

REF

ADJ

/dT TJ = –40°C to +85°C70ppm/°C

OUT

V

DROP

= 10mA to 1A, VIN = (V

OUT

IN

= (V

I

OUT

OUT OUT OUT

OUT

+ 0.7V) to 15V ±0.5 ±2.5 %

OUT

+ 0.9V) to 15V ±3.5 %

= 10mA 3 25 mV = 1A 230 400 mV = 1A 320 500 mV

= 1A 480 mV = 1A 580 mV

REF

VOLTAGE NOISE

f = 10Hz to 100kHz V 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°C 1.0 2.2 A

T

J

n

I

CL

= 0 35µV

OUT

= 10µF10µV

OUT

1.2 1.7 2.1 A

RIPPLE REJECTION

f = 120Hz 65 dB

ENABLE CONTROL

V

High (output enabled) V

ENABLE

Low (output disabled) –0.2 0.5 V

V

ENABLE

I

High (output enabled) I

ENABLE

Low (output disabled) V

I

ENABLE

Output Disable Time 50 µs

ENABLE

V

= 2V to VIN, VIN = 2.1V to 6.5

ENABLE

= 0V to 0.5V 2 100 nA

ENABLE

(5)

2V

Output Enable Softstart Time 1.5 ms

THERMAL SHUTDOWN

Junction Temperature

Shutdown 150 °C Reset from Shutdown 130 °C

GROUND PIN CURRENT

Ground Pin Current I

GND

Enable Pin Low V

INPUT VOLTAGE V Operating Input Voltage Range

(6)

IN

Specified Input Voltage Range V

= –40°C to +85°CV

T

J

I

= 10mA 0.5 0.7 mA

OUT

= 1A 1.7 1.8 mA

I

OUT

≤ 0.5V 0.5 µA

ENABLE

2.1 15 V

> 2.7V V

IN

> 2.9V V

IN

+ 0.7 15 V

OUT

+ 0.9 15 V

OUT

TEMPERATURE RANGE

Specified Range T 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-Case 4 °C/W Junction-to-Case 15 °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

.

IN

(1)

= 0.1µF

, unless otherwise noted.

REG104GA REG104FA

5.5 V

1.295 V

0.2 1 µA

/V • V

RMS

OUT

/V • V

RMS

OUT

IN

1 100 nA

= 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

0 200100 600500400300 700 800 900 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

02 6841012

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

0 200 600400 800 1000

I

(mA)

OUT

OUTPUT VOLTAGE CHANGE vs I

(Output Voltage % Change Referred to

I

= 10mA at +25°C)

I

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 –20 40 600 20 10080 120

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 –25 25 500 10075 125

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 –25 25 500 10075 125

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

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

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 –20 40 600 20 10080 120

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 10 100 1000 10000 100,000

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 –20 0 20 40 60 80 120100

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 –25 0 25 50 75 100 125

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

1 10010 1000

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 –20 40 600 20 10080 120

Temperature (°C)

• 0.90

0.14 –20–40 0 40 80 120–60 20 60 100 140

Temperature (°C)

RIPPLE REJECTION vs FREQUENCY

70

60

50

C

OUT

40

Ripple Rejection (dB)

30

20

10 100 1k 10k 100k

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

0 200 400 600 800 1000

I

(mA)

OUT

OUTPUT DISABLE TIME

= 0

C

OUT

1V/div

SOFT START

V

1V/div

2V V

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 0 0.2 0.4 0.6 0.8 1

Error (%)

7