KA3502

Undervoltage Threshold :
Battery Backup Switching :
Power-Up Reset Delay (Typ) :
Output Type :
Supply Current (Typ) :
Packaging :
Manual Reset : Not Resettable
Watchdog : No Watchdog
Number of Voltages Monitored : 4
Mounting Style : Through Hole
Maximum Operating Temperature : + 70 C
Maximum Power Dissipation : 1000 mW
Supply Voltage - Max : 24 V
Package / Case : DIP-20
Supply Voltage - Min : 15 V
Monitored Voltage : 3.3 V, 5 V, 12 V, Adjustable
Overvoltage Threshold : 4.2 V, 6.4 V, 15 V, Adjustable


Features:

• Complete Housekeeping Circuit
• Few External Components
• Over Voltage Protection for 3.3V/5V/12V/Adj. Output
• Over Current Protection for 3.3V/5V/12V Output
• Open-Collector Output and Remote On/Off Function
• Remote On/Off Delay Time Control
• Precision Voltage Reference for Outputs, 5V/12V
• Uncommitment Precision Voltage Reference for +5Vs
• Power Good Signal Generator with Hysteresis
• Disable Logic of 3.3V, 5V, 12V for Complete Shutdown


Pinout




Specifications

Parameter	Symbol	Value	Unit
Supply Minimum Voltage	Vcc	15 ~ 24	V
UV Input Voltage	Vuv	24	V
Input Maximum Voltage	Vin (max)	Vcc - 3	V
Cathode Current for FB1, 2	Ik1, 2	1 ~ 30	mA
PWM Maximum Current	Io (PWM)	30	mA
PG Output Maximum Current	Io (PG)	30	mA
Power Dissipation	Pd	1	W
Operating Temperature Range	Topr	0 ~ 70	°C
Storage Temperature Range	Tstg	-65 ~ 150	°C

Description

The KA3502 is complete housekeeping circuitry for use in the secondary side of SMPS(Switched Mode Power Supply). It contains various functions, which are two Precision Voltage References, Over Voltage/Current Protection, Remote On/Off Control, Power Good Signal Generator, Disable Logic and etc.