© Semiconductor Components Industries, LLC, 2006

February, 2006 − Rev. 16

1

Publication Order Number:

CS8126/D

CS8126

5.0 V, 750 mA Low

Dropout Linear Regulator

with Delayed RESET

The CS8126 is a low dropout, high current 5.0 V linear regulator. It

is an improved replacement for the CS8156. Improvements include

higher accuracy, tighter saturation control, better supply rejection, and

enhanced RESET circuitry. Familiar PNP regulator features such as

reverse battery protection, overvoltage shutdown, thermal shutdown,

and current limit make the CS8126 suitable for use in automotive and

battery operated equipment. Additional on−chip filtering has been

included to enhance rejection of high frequency transients on all

external leads.

An active microprocessor RESET function is included on−chip with

externally programmable delay time. During power−up, or after

detection of any error in the regulated output, the RESET lead will

remain in the low state for the duration of the delay. Types of errors

include short circuit, low input voltage, overvoltage shutdown,

thermal shutdown, or others that cause the output to become

unregulated. This function is independent of the input voltage and will

function correctly with an output voltage as low as 1.0 V. Hysteresis is

included in both the reset and Delay comparators for enhanced noise

immunity. A latching discharge circuit is used to discharge the Delay

capacitor, even when triggered by a relatively short fault condition.

This circuit improves upon the commonly used SCR structure by

providing full capacitor discharge (0.2 V type).

Note: The CS8126 is lead compatible with the LM2927 and

LM2926.

Features

TO−220−5

T SUFFIX

CASE 314D

1

5

TO−220−5

TVA SUFFIX

CASE 314K

TO−220−5

THA SUFFIX

CASE 314A

1

5

1

3. GND

4. Delay

5. RESET

TO−220−5

THE SUFFIX

CASE 314J

1

7

DPS SUFFIX

CASE 936AB

4. GND

5. Delay

6. RESET

7. NC

See detailed ordering and shipping information in the package

dimensions section on page 9 of this data sheet.

ORDERING INFORMATION

See general marking information in the device marking

section on page 9 of this data sheet.

DEVICE MARKING INFORMATION

1

5

*For additional information on our Pb−Free strategy

and soldering details, please download the

ON Semiconductor Soldering and Mounting

Techniques Reference Manual, SOLDERRM/D.

http://onsemi.com