TS2937
500mA Ultra Low Dropout Fixed Positive Voltage Regulator
TO-263
Low Dropout Voltage 0.6V max.
Pin assignment: 1. Input 2. Ground 3. Output
General Description
The TS2937 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 500mA). 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
Dropout voltage typically 0.6V @Io=500mA Output current up to 500mA Output voltage trimmed before assembly -18V Reverse peak voltage +30V Input over voltage protection +60V Transient peak voltage Internal current limit Thermal shutdown protection
Block Diagram
Ordering Information
Part No. TS2937CZxx TS2937CMxx TS2937CPxx -20 ~ +85 C
o
Operation Temp. (Ambient)
Package TO-220 TO-263 TO-252
SOT-223 TS2937CWxx Note: Where xx denotes voltage option, available are 12V, 10V, 8V, 5V, 3.3V and 2.5V. Contact factory for additional voltage options.
Absolute Maximum Rating (Note 1)
Input Supply Voltage (Note 2) Operation Input Supply Voltage Power Dissipation (Note 3) Operating Junction Temperature Range Storage Temperature Range Lead Soldering Temperature (260 C) TO-220 / TO-263 Package TO-252 / SOT-223 Package 5 4 S
o
Vin Vin (operate) PD TJ TSTG
-18 ~ +60 26 Internally Limited -25 ~ +125 -65 ~ +150
V V W
o o
C C
TS2937
1-1
2003/12 rev. B
Electrical Characteristics
Vin = Vout + 1V, IL = 5mA, Co = 10uF, Ta = 25 oC, unless otherwise specified.
Parameter
Output Voltage Output Voltage
Conditions
5mA ≤ IL ≤ 500mA, Vo+1V ≤ Vin ≤ 26V
Min
0.980|Vo| 0.970|Vo|
Typ
Vout
Max
1.020|Vo| 1.030|Vo|
Unit
V V
Input Supply Voltage Output Voltage Temperature Coefficient Line Regulation Load Regulation Dropout Voltage (Note 4) Vo+1V ≤ Vin ≤ 26V 5mA ≤ IL ≤ 500mA IL=100mA IL=300mA IL=500mA Quiescent Current (Note 5) IL=100uA IL=300mA IL=500mA Short Circuit Current (Note 6) Output Noise, 10Hz to 100KHz, IL=10mA Vout=0 CL=2.2uF CL=3.3uF CL=33uF
---
-50
26 150
V ppm/ oC
-------------
0.05 0.2 100 300 500 100 12 25 -500 350 120
0.5 1.0 200 400 600 ---1.3 ----
% %
mV
uA mA
A
uVrms
Thermal Performance
Condition
Thermal Resistance Junction to Ambient
Package type
TO-220 TO-263 TO-252 SOT-223
Typ
60 80 150 170
Unit
o
C/W
Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed Specifications and test conditions see the Electrical Characteristics. Note 2: Maximum positive supply voltage of 60V must be limited duration (
