
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 onchip filtering has been
included to enhance rejection of high frequency transients on all
external leads.
An active microprocessor RESET function is included onchip with
externally programmable delay time. During powerup, 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
Low Dropout Voltage (0.6 V at 0.5 A)
3.0% Output Accuracy
Active RESET
External RESET Delay for Reset
Protection Circuitry
Reverse Battery Protection
+60 V, 50 V Peak Transient Voltage
Short Circuit Protection
Internal Thermal Overload Protection
PbFree Packages are Available
TO2205
T SUFFIX
CASE 314D
1
5
TO2205
TVA SUFFIX
CASE 314K
TO2205
THA SUFFIX
CASE 314A
1
5
1
Pin 1. V
IN
2. V
OUT
3. GND
4. Delay
5. RESET
TO2205
THE SUFFIX
CASE 314J
1
7
D
2
PAK7
DPS SUFFIX
CASE 936AB
Pin 1. V
IN
2. V
OUT
3. V
OUT(SENSE)
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 PbFree strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
http://onsemi.com