Datasheet TC1264-3.3VDBTR, TC1264-3.3VAB, TC1264-3.0VEBTR, TC1264-3.0VDBTR, TC1264-2.5VEBTR Datasheet (Microchip Technology)

...
Page 1
TC1264
W
W
3
D
C1264
64
3
0
D
3
3
K
3
800mA Fixed Output CMOS LDO
Features
• Very Low Dr opout Voltage
• 800mA Output Current
• High Output Voltage Accuracy
• Standard or Custom Output Voltages
Applications
• Battery Operated Systems
• PortableComputers
• Medical Instruments
• Instrumentation
• Cellular/GSM/PHSPhones
• Linear Post-Regulators for SMPS
• Pagers
Device Selection Table
Part Number Package
TC1264-xxVDB 3-Pin SOT-223 -40°C to +125°C TC1264-xxVAB 3-Pin TO-220 -40°C to +125°C TC1264-xxVEB 3-Pin DDPAK -40°C to +125°C
NOTE: xx indicates output voltages. Available Output Voltages: 1.8, 2.5, 3.0, 3.3. Otheroutputvoltagesareavailable.Please contactMicrochip
T echnology Inc. for details.
Junction
Temp. Range
Package Type
-Pin TO-22
TC12
ND
TAB IS GN
T
TAB IS GND
-Pin SOT-22
FRONT VIE
TC1264
3-Pin DDPA
FRONT VIE
T
ND
V
3
OUT
GND
2
1
V
IN
TAB IS GN
T
General Description
The TC1264 is a fixed output, high accuracy (typically ±0.5%) CMOS low dropout regulator. Designed specificallyforbattery-operatedsystems,the TC1264’s CMOS construction eliminates wasted ground current, significantly extending battery life. Total supply current is typically 80µA at full load (20 to 60 times lower than in bipolar regulators).
TC1264 key features include ultra low noise operation, very low dropout voltage (typically 450mV at full load), and f ast response to step changes in load.
The TC1264 incorporates both over temperature and over current protection. The TC1264 is stable with an output capacitor of only 1µF and has a maximum output current of 800mA. It is available in 3-Pin SOT-223, 3-Pin TO-220 and 3-Pin DDPAK packages.
Typical Application
V
2002 Microchip TechnologyInc. DS21375B-page 1
V
IN
IN
GND
V
TC1264
OUT
C1 1µF
V
OUT
Page 2
TC1264
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings*
Input Voltage .........................................................6.5V
Output Voltage..................(V
– 0.3V) to (VIN+0.3V)
SS
*Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affectdevice reliability.
Power Dissipation................Internally Limited (Note 8)
Maximum Voltage on Any Pin ........V
Operating Temperature Range......-40°C < T
+0.3V to -0.3V
IN
<125°C
J
Storage Temperature..........................-65°C to +150°C
TC1264 ELECTR ICAL SPECI FICATIONS
Electrical Characteristics: VIN=VR+1.5V,(Note 1),IL=100µA, CL=3.3µF, TA= 25°C, unless otherwise noted. Boldface type
specifications apply for junction temperatures of -40°C to +125°C.
Symbol Parameter Min Typ Max Units Test Conditions
V
IN
I
OUTMAX
V
OUT
/TV
V
OUT
/V
V
OUT
V
OUT/VOUT
V
IN-VOUT
I
DD
PSRR Power Supply Rejection Ratio 64 dB F 1kHz I
OUTSC
/P
V
OUT
eN Output Noise 260 nV/Hz
Note 1: VRis the regulator output voltage setting.
2: The minimum V 3: This accuracy represents the worst case over the entire output current and temperature range. 4:
5: Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range
6: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at a 7: Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or 8: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the
Input Operating Voltage 2.7 6.0 V Note 2 Maximum Output Current 800 ——mA Output Voltage VR–2.5%
V
–2%
R
–7% VR+3% VIL= 0.1mA to 800mA (Note 3)
V
R
Temperature Coefficient 40 ppm/°C Note 4
OUT
Line Regulation 0.007 0.35 %(VR+1V)VIN ≤ 6V
IN
Load Regulation -0.01 0.002 0 %/mA IL=0.1mAtoI Dropout Voltage
— — — — — —
V
R
V
R
±0.5% ±0.5%
20
50 150 260 450 700 890
V
R
V
+2.5%
+3%
R
30 160 480 800
1300 1000 1400
VV
R
V
R
mV V
R
V
R
2.5V =1.8V
OUTMAX
2.5V, IL=100µA
I
=100mA
L
I
=300mA
L
I
=500mA
L
I
=800mA
L
=1.8V,IL=500mA
I
=800mA
L
(Note 6)
SupplyCurrent 80 130 µAIL=0
Output Short Circuit Current 1200 mA V ThermalRegulation 0.04 V/W Note 7
D
has to justify the conditions: VIN≥ VR+V
IN
TC V
=(V
OUT
OUTMAX–VOUTMIN
V
x T
OUT
from 0.1mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
1.5V differential. line regulation effects. Specifications are for a current pulse equal to I thermal resistance from junction-to-air (i.e., T
thermal shutdown. Please see Section 4.0 Thermal Considerations for more details.
)x10
6
, θJA). Exceeding the maximum allowable power dissipation causes the device to initiate
A,TJ
andVIN≥ 2.7V for IL= 0.1mA to I
DROPOUT
at VIN= 6V for T = 10 msec.
LMAX
OUT
IL=I
OUTMAX
=0V
OUTMAX
.
,F=10kHz
(Note 5)
DS21375B-page 2
2002 Microchip TechnologyInc.
Page 3
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1: PIN FUNCTION TABLE
Pin No.
(3-PinSOT-223)
(3-Pin TO-220) (3-Pin DDPAK)
1V 2 GND Ground terminal. 3V
Symbol Description
IN
OUT
Unregulated supply input.
Regulated voltage output.
TC1264
3.0 DETAILED DESCRIPTION
The TC1264 is a precision, fixed output LDO. Unlike bipolar regulators, the TC1264’s supply current does not increase with load current. In addition, V remains stable and within regulation over the entire 0mA to I
LOADMAX
load current range (an important consideration in RTC and CMOS RAM battery back-up applications).
Figure 3-1 shows a typical applicationcircuit.
FIGURE 3-1: TYPICAL APP LICATION
CIRCUIT
Battery
C1 1µF
V
GND
+
+
IN
TC1264
V
OUT
+
C2 1µF
V
OUT
OUT
3.1 Output Capacitor
A1µF (min) capacitorfrom V The output capacitor should have an effective series resistance greater than 0.1and less than 5.A1µF capacitorshould be connected from V is more than 10 inches of wire between the regulator and the AC filter capacitor,or if a battery is used as the power source. Aluminum electrolytic or tantalum capacitor types can be used. (Since many aluminum electrolytic capacitors freeze at approximately -30°C, solid tantalums are recommended for applications operatingbelow -25°C.) When operating from sources other than batteries, supply-noise rejection and transient response can be i mproved by increasing the value of the input and outputcapacitorsand employing passive filtering techniques.
to groundis required.
OUT
to GND if there
IN
2002 Microchip TechnologyInc. DS21375B-page 3
Page 4
TC1264
4.0 THERMAL CONSIDERATIONS
4.1 Thermal Shutdown
Integrated thermal protection circuitry shuts the regulator off when die temperature exceeds 160°C. The regulator remains off until the die temperature drops to approximately 150°C.
4.2 Power Dissipation
The amount of power the regulator dissipates is primarily a function of input and output voltage, and output current. The following equation is used to calculate worst case actual power dissipation:
EQUATION 4-1:
P
(V
D
INMAX–VOUTMIN)ILOADMAX
Where:
P
= Worst case actual power dissipation
D
= Maximum voltage on V
V
INMAX
V
I
LOADMAX
= Minimum regulator output voltage
OUTMIN
= Maximum output (load) current
The maximum allowable power dissipation (Equation 4-2) is a function of the maximum ambient temperature (T
), the maximum allowable die temperature
AMAX
(T
) and t he thermal resistance from j unction-to-air
JMAX
(θ
).
JA
EQUATION 4-2:
P
=(T
DMAX
JMAX–TAMAX
θ
Where all terms ar e previously defined.
Table 4-1 and Table 4-2 show various values of θJAfor the TC1264 packages.
TABLE 4-1: THERMAL RESISTANCE
GUIDELINES FOR TC1264 IN SOT-223 PACKA GE
Copper
Area
(Tops ide)*
2500 sq mm 2500sq mm 2500 sq mm 45°C/W 1000 sq mm 2500sq mm 2500 sq mm 45°C/W
225 sq mm 2500 sq mm 2500 sq mm 53°C/W
100 sq mm 2500 sq mm 2500 sq mm 59°C/W 1000 sq mm 1000sq mm 1000 sq mm 52°C/W 1000 sq mm 0 sq mm 1000 sq mm 55°C/W
Copper
Area
(Backside)
JA
Board
Area
IN
)
Thermal
Resistance
)
JA
TABLE 4-2: THERMAL RESISTANCE
GUIDELINES FOR TC1264 IN 3-PIN DDPAK/TO-220 PACKAGE
Copper
Area
(Tops ide)*
2500 sq mm 2500 sq mm 2500 sq mm 25°C/W 1000 sq mm 2500 sq mm 2500 sq mm 27°C/W
125 sq mm 2500 sq mm 2500 sq mm 35°C/W
Copper
Area
(Backside)
Board
Area
*Tab of device attached t o topside copper Equation 4-1 can be used in conjunction with Equation
4-2 to ensure regulator thermal operation is within limits. For example:
Given:
V
INMAX
V
OUTMIN
I
LOADMAX
T
JMAX
T
AMAX JA = 59°C/W (SOT-223)
θ
= 3.3V ± 10% = 2.7V ± 0.5% = 275mA = 125°C =95°C
Find: 1. Actual power dissipation
2. Maximum allowable dissipation Actual power dissipation: P
(V
D
INMAX–VOUTMIN)ILOADMAX
= [ (3.3 x 1.1) – (2.7 x .995)]275 x 10 = 260mW
Maximum allowable power dissipation:
P
DMAX
=(T
JMAX–TAMAX
θ
)
JA
= (125 – 95)
59
= 508mW
In this example, the TC1264 dissipates a maximum of 260mW; below the allowable limit of 508mW. In a similar manner, Equation 4-1 and Equation 4-2 can be used to calculate maximum current and/or input voltage limits. For example, the maximum allowable V
, is found by substituting the maximum allowable
IN
power dissipation of 508mW into Equation 4-1, from which V
INMAX
=4.6V.
Thermal
Resistance
–3
JA
)
*Tab of device attached t o topside copper
DS21375B-page 4
2002 Microchip TechnologyInc.
Page 5
TC1264
D
5
C
0
C
0
C
5.0 TYPICAL CHARACTERISTICS
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samplesandareprovidedforinformationalpurposesonly. Theperformancecharacteristicslisted hereinare not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Line Regulation vs. Temperature
0.020
0.018
0.016
0.014
0.012
0.010
0.008
0.006
LINE REGULATION (%)
0.004
0.002
0.000
-40°C0°C25°C70°C85°C 125°C TEMPERATURE (°C)
IDD vs. Temperature
150
135
120
105
90
(µA)
75
DD
I
60
45
30
15
0
-40°C0°C25°C70°C85°C 125°C TEMPERATURE (°C)
Output Noise vs. Frequency
10.0
1.0
V/Hz)
µ
0.1
NOISE (
0.0
0.01
0.01 1
FREQUENCY (kHz)
0.600
0.550
0.500
0.450
0.400
V
=
3V
OUT
0.350
0.300
0.250
0.200
0.150
DROPOUT VOLTAGE (V)
0.100
0.050
0.000 0
100
200 300
I
LOAD
= 50µΩ
R
LOAD
= 1µF
C
OUT
10
100 1000
12
-4
400
500 600 700 800
(mA)
LOA
Load Regulation vs. Temperature
0.0100
0.0090
0.0080
0.0070
0.0060
0.0050
V
= 3V
0.0040
0.0030
0.0020
LOAD REGULATION (%/mA)
0.0010
0.0100
(V)
V
OUT
-40°C
0°C25°C70°C85°C 125°C
TEMPERATURE (°C)
3.0V V
3.030
3.020
3.010
3.000
2.990
2.980
2.970
OUT
2.960
2.950
2.940
2.930
2.920
-40°C0°C25°C70°C85°C 125°C
OUT
TEMPERATURE (°C)
1mA to 800mA
vs. Temperature
I
= 0.1mA
LOAD
I
I
LOAD
I
LOAD
LOAD
= 300mA
= 500mA
= 800mA
2002 Microchip TechnologyInc. DS21375B-page 5
Page 6
TC1264
6.0 PACKAGING INFORMATION
6.1 Package Marking Information
Package marking data not available at this time.
6.2 Taping Form
Component Taping Orientation for 3-Pin SOT-223 Devices
Device
Marking
User Direction of Feed
W
PIN 1
Standard Reel Component Orientation for TR Suffix Device (Mark Right Side Up)
Carrier Tape, Number of Components Per Reel and Reel Size
Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size
3-Pin SOT-223 12 mm 8 mm 4000 13 in
P
Component Taping Orientation for 3-Pin DDPAK Devices
PIN 1
User Direction of Feed
Marking
Device
W
P
DS21375B-page 6
Standard Reel Component Orientation for TR Suffix Device (Mark Right Side Up)
Carrier Tape, Number of Components Per Reel and Reel Size
Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size
3-Pin DDPAK 24 mm 16 mm 750 13 in
2002 Microchip TechnologyInc.
Page 7
6.3 Package Dimensions
3-Pin SOT-223
TC1264
.264 (6.70) .248 (6.30)
.122 (3.10) .114 (2.90)
.287 (7.30) .264 (6.70)
.071 (1.80) MAX.
.004 (0.10) .001 (0.02)
3-Pin TO-220
.113 (2.87) .103 (2.62)
.258 (6.55)
.230 (5.84)
.146 (3.70) .130 (3.30)
PIN 1
.410 (10.41)
.091 (2.30) TYP.
.031 (0.80) .024 (0.60)
.181 (4.60) TYP.
.357 (9.06)
.041 (1.04) .033 (0.84)
.156 (3.96) .146 (3.71)
DIA.
10° MAX.
.036 (0.91) MIN.
.185 (4.70) .165 (4.19)
.055 (1.40) .045 (1.14)
.594 (15.09) .569 (14.45)
.013 (0.33) .009 (0.24)
Dimensions: inches (mm)
3° - 7.5° 5 PLCS.
.244 (6.20) .234 (5.94)
.560 (14.22) .518 (13.16)
PIN 1
.205 (5.21) .195 (4.95)
2002 Microchip TechnologyInc. DS21375B-page 7
.055 (1.40) .045 (1.14)
.037 (0.94) .027 (0.69)
.105 (2.67) .095 (2.41)
.020 (0.51) .012 (0.30)
.115 (2.92) .095 (2.41)
Dimensions: inches (mm)
Page 8
TC1264
6.3 Package Dimensions (Continued)
3-Pin DDPAK
.067 (1.70) .045 (1.14)
.370 (9.40) .330 (8.38)
.605 (15.37) .549 (13.95)
PIN 1
.100 (2.54) TYP.
.410 (10.41)
.385 (9.78)
.051 (1.30) .049 (1.24)
.037 (0.94) .026 (0.66)
.183 (4.65) .170 (4.32)
.055 (1.40) .045 (1.14)
3° - 7°
(5x)
.010 (0.25) .000 (0.00)
.026 (0.66) .014 (0.36)
.110 (2.79) .068 (1.72)
8° MAX.
Dimensions: inches (mm)
DS21375B-page 8
2002 Microchip TechnologyInc.
Page 9
TC1264
SALES AND SUPPORT
Data Sheets
Products supportedby a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom­mendedworkarounds.To determine if an erratasheet exists for a particulardevice, please contactoneof the following:
1. Your local Microchip sales office
2. The Microchip Corporate LiteratureCenter U.S. FAX:(480)792-7277
3. The Microchip Worldwide Site (www.microchip.com) Pleasespecify which device, revision of silicon and Data Sheet (includeLiterature #) you are using.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
2002 Microchip Technology Inc. DS21375B-page 9
Page 10
TC1264
NOTES:
DS21375B-page 10 2002 Microchip Technology Inc.
Page 11
TC1264
Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products as critical com­ponents in life support systems is not authorized except with express written approval by Microchip. No licenses are con­veyed, implicitly or otherwise, under any intellectual property rights.
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EELOQ,microID,MPLAB,PIC,PICmicro,PICMASTER,
PICSTART, PRO MATE, SEEVA L and The Embedded Control
SolutionsCompany areregiste red trademarksof MicrochipTech­nologyIncorp or ated in the U.S.A. and other countries .
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Serialized Quick Turn Programming (SQTP) is a service mark of Microchip TechnologyIncorporated in t he U.S.A.
All other trademarks mentioned herein are property of their respective companies.
© 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July 1999 and Mountain View, California in March 2002. The Company’s quality system processes and procedures are QS-9000 compliant for its
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2002 Microchip TechnologyInc. DS21375B-page 11
8-bit MCUs, KEELOQ®code hopping
Page 12
WORLDWIDE SALES AND SERVICE
AMERICAS
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05/01/02
DS21375B-page 12
*DS21375B*
2002 Microchip Technology Inc.
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