NCV8141 ON Semiconductor, NCV8141 Datasheet - Page 2

• Manufacturer Part Number: NCV8141
• Description: 5v, 500ma Linear Regulator With Enable, /reset, And Watchdog
• Manufacturer: ON Semiconductor

PIN FUNCTION DESCRIPTION
ENABLE
GND
Pin
WDI
V
1
2
3
4
5
6
7
IN
ENABLE
Symbol
RESET
Delay
V
GND
WDI
V
OUT
IN
Reference & Bias
Watchdog
Control Logic
ENABLE
RESET
Delay
Supply voltage to IC, usually direct from the battery.
CMOS compatible logical input. V
CMOS compatible output lead. RESET goes low whenever V
more than 2.0 ms or WDI signal falls below the watchdog threshold frequency.
Ground Connection.
Timing capacitor for Watchdog and RESET functions.
CMOS compatible input lead. The Watchdog function monitors the falling edge of the incoming digital
pulse train. The signal is usually generated by the system microprocessor.
Regulated output voltage, 5.0 V (typ).
Figure 1. Block Diagram
http://onsemi.com
NCV8141
Regulation
OUT
Overtemperature
2
is disabled when ENABLE is LOW and WDI is invalid.
Overvoltage
Function
Undervoltage
Short Circuit
OUT
drops 4.5% below its typical value for
RESET
V
Sense
Delay
OUT