TS2940 Taiwan Semiconductor Company, TS2940 Datasheet

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TS2940

Manufacturer Part Number
TS2940
Description
1A Ultra Low Dropout Fixed Positive Voltage Regulator
Manufacturer
Taiwan Semiconductor Company
Datasheet

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General Description
The TS2940 series of fixed-voltage monolithic micro-power voltage regulators is designed for a wide range of
applications. This device excellent choice of use in battery-power application. Furthermore, the quiescent current
increases on slightly at dropout, which prolongs battery life.
This series of fixed-voltage regulators features very low ground current (100uA Typ.) and very low drop output voltage
(Typ. 60mV at light load and 600mV at 1A). This includes a tight initial tolerance of 1% typ., extremely good line regulation
of 0.05% typ., and very low output temperature coefficient.
This series is offered in 3-pin TO-263, TO-220, TO-252 & SOT-223 package.
Features
Block Diagram
Absolute Maximum Rating
Input Supply Voltage (Note 2)
Operation Input Supply Voltage
Power Dissipation (Note 3)
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260
TS2940
Dropout voltage typically 0.6V @Io=1A
Output current up to 1A
Output voltage trimmed before assembly
-18V Reverse peak voltage
TO-263
TO-252 / SOT-223Package
TO-220 TO-263 Package
1A Ultra Low Dropout Fixed Positive Voltage Regulator
o
C)
Pin assignment:
1.
2.
3.
(Note 1)
Input
Ground
Output
1-6
Vin (operate)
T
Vin
P
T
STG
D
J
TS2940
Ordering Information
Note: Where xx denotes voltage option, available are
TS2940CZxx
TS2940CMxx
TS2940CPxx
TS2940CWxx
5.0V, 3.3V, 2.5V and 1.8V. Contact factory for
additional voltage options.
+30V Input over voltage protection
+60V Transient peak voltage
Internal current limit
Thermal shutdown protection
Low Dropout Voltage 0.6V (typ.)
Part No.
Internally Limited
-40 ~ +125
-65 ~ +150
-18 ~ +60
30V
5
4
Operation Temp.
-40 ~ +125
2003/12 rev. B
-40 ~ +85
o
o
C
C
TO-220
TO-263
TO-252
SOT-223
Package
o
o
W
V
V
S
C
C

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TS2940 Summary of contents

Page 1

... General Description The TS2940 series of fixed-voltage monolithic micro-power voltage regulators is designed for a wide range of applications. This device excellent choice of use in battery-power application. Furthermore, the quiescent current increases on slightly at dropout, which prolongs battery life. This series of fixed-voltage regulators features very low ground current (100uA Typ.) and very low drop output voltage (Typ ...

Page 2

... Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the ground pin current and output load current. Note 6: Output current will decrease with increasing temperature, but it will be not dropped below 1A at the maximum specified temperature. TS2940 o C, unless otherwise specified. Conditions Min 0 ...

Page 3

... PNP output of these devices is limited only by low Vce saturation voltage. The TS2940 series is fully protected from damage due to fault conditions. Linear current limiting is provided. Output current during overload conditions is constant. Thermal shutdown the device when the die temperature exceeds the maximum safe operating temperature ...

Page 4

... R maximum allowable value for the junction to ambient thermal resistance, θja, can now be found: θ (max TS2940 IMPORTANT: if the maximum allowable value for is found to be ≥60 (max). this is R for the TO-263 package, ≥150 package, or ≥170 heatsink is needed since the package alone will dissipate enough heat to satisfy these requirements ...

Page 5

... TO-220 Mechanical Drawing TO-263 Mechanical Drawing TS2940 K L MILLIMETERS DIM MIN A 10.000 P B 3.240 C 2.440 0.381 F 2.345 M G 4.690 H 12.700 I 8.382 J 14.224 K 3.556 L 0.508 M 27.700 N 2.032 O O 0.255 P 5.842 N MILLIMETERS E DIM F MIN A 10.000 B 14.605 C 0 ...

Page 6

... TO-252 Mechanical Drawing SOT-223 Mechanical Drawing TS2940 E MILLIMETERS F DIM MIN A 6.570 B 9.250 I C 0.550 D 2.560 E 2.300 F 0.490 G 1.460 G H 0.520 I 5.340 H J 1.460 MILLIMETERS DIM I MIN A 6.350 B 2.900 C 3.450 D 0.595 J E 4.550 F 2.250 K G 0.835 H 6 ...

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