2436
COUNTDOWN POWER TIMER
DISCONTINUED PRODUCT
— FOR REFERENCE ONL
Y
Dwg. No. PS-016
The ULQ2436M is a rugged, long-duration countdown timer
specifically designed to operate in an automotive or industrial environ-
ment. It uses an internal RC oscillator to drive a digital countdown
circuit for timing periods of typically 2-1/2 to 5 minutes. The
ULQ2436M multiplies the oscillator period by 4064. Internal logic can
automatically cause the timeout to be halved for successive timeouts.
I
2
L technology is used for the countdown and logic circuitry and
conventional linear bipolar devices for the oscillator and output power
functions. This combination, together with the low-cost 8-pin mini-DIP
plastic package, results in a very economical power timer suitable for a
wide variety of applications.
The Darlington-connected output driver is capable of switching
loads up to 400 mA.
FEATURES
n 28 V/400 mA Output Switch
n Low-Cost Ceramic Timing Capacitor
n Dual-Mode Timing Operation
n -40°C to +85°C Operation
n 10 V to 16 V Operation
n Internal Stabilizing Regulator
n Low-Cost 8-Pin Mini-DIP
2436
1
2
3
4 5
6
7
8
TOGGLE
GROUND
OUTPUT
OSC.
SUPPLY
MODE SELECT
NO
CONNECTION
NO
CONNECTION
V
REG
COUNTER
F/F
Always order by complete part number: ULQ2436M .
Dwg. No. PS-016
COUNTDOWN POWER TIMER
Data Sheet
27462.20A
APPLICATIONS
n Automotive Rear-Window Defogger Timer
n Automotive Courtesy Light Timer
n Appliance Power Timer
n Power Control System
ABSOLUTE MAXIMUM RATINGS
at T
A
= +25°C
Supply Current, I
REG
. . . . . . . . . . . . 15 mA
Output Voltage, V
OUT
. . . . . . . . . . . . . 28 V
Output Current, I
OUT
. . . . . . . . . . . 400 mA
Input Voltage, V
1
or V
4
(2 min.) . . . . . 24 V
(continuous) . . . . . . . . . . . . . . . . . 16 V
Package Power Dissipation,
P
D
. . . . . . . . . . . . . . . . . . . . See Graph
Operating Temperature Range,
T
A
. . . . . . . . . . . . . . . . -40°C to +85°C
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . . -65°C to +150°C