REGULATING PULSE WIDTH MODULATORS - Seme LAB
Description
LAB
TOP VIEW
INV.
INPUT 1 N.
I.
INPUT 2 OSC.
OUTPUT 3 +C.
L.
SENSE 4 –C.
L.
SENSE 5 RT 6 CT 7 GROUND 8
16 15 14 13 12 11 10 9
SEME
IP1524B SERIES
REGULATING PULSE WIDTH MODULATORS
VREF VIN EB CB CA EA SHUTDOWN COMPENSATION
FEATURES
• • • • • • • • • • • • Pin Compatible with IP1524 Series 7 to 40 volt operation 5 volt reference trimmed to ±1% Undervoltage lockout Excellent external sync capability Wide current limit common mode range +5 Volt error amplifier common mode PWM data latch Full double-pulse suppression logic 50ns shutdown function Dual 200mA, 60V output transistors Fully specified over temperature
J Package – 16 Pin Ceramic DIP N Package – 16 Pin Plastic DIP D Package – 16 Pin Plastic (300) SOIC
Order Information
Part Number IP1524B IP2524B IP3524B J–Pack 16 Pin N–Pack 16 Pin D–16 16 Pin Temp.
Range -55 to +125°C -25 to +85°C 0 to +70°C Note: To order, add the package identifier to the part number.
eg.
IP1524BJ IP3524BD–16
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
+VIN Input Voltage Collector Voltage Logic Inputs Current Limit Sense Inputs Oscillator Charging Current PD PD TJ TSTG TL Power Dissipation Power Dissipation TA = 25°C Derate @ TA > 50°C TC = 25°C Derate @ TC > 25°C +40V +60V –0.
3 to +5.
5V –0.
3 to +VIN 5mA 1W 10mW/°C 2W 16mW/°C See Ordering Information –65 to +150°C (soldering, 10 seconds) +300°C
Prelim.
3/95
Operating Junction Temperature Storage Temperature Range Lead Temperature
Semelab plc.
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LAB
DESCRIPTION
The IP1524B is a pulse width modulator for switching power supplies which features improved performance over industry standards like the SG1524.
A direct pin-for-pin replacement for the earlier device, it combines advanced processing techniques and circuit design to provide improved reference accuracy/ and extended common mode range at the error amplifier and current limit inputs.
A DC-coupled flip-flop eliminates triggering and glitch problems, and...
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