SG3525AN Microsemi Analog Mixed Signal Group, SG3525AN Datasheet
SG3525AN
Specifications of SG3525AN
Available stocks
Related parts for SG3525AN
SG3525AN Summary of contents
Page 1
DESCRIPTION The SG1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lower external parts count when used to implement all types of switching power supplies. The on-chip +5.1 volt reference is trimmed to ±1% ...
Page 2
ABSOLUTE MAXIMUM RATINGS Supply Voltage (+V ) ....................................................... IN Collector Supply Voltage (V ) ........................................... C Logic Inputs ....................................................... Analog Inputs ....................................................... Output Current, Source or Sink ................................... Reference Load Current ............................................... Note 1. Values beyond which damage may occur. ...
Page 3
ELECTRICAL CHARACTERISTICS Parameter Oscillator Section (Note 4) Initial Accuracy Voltage Stability Temperature Stability (Note 3) Minimum Frequency (Note 3) Maximum Frequency (Note 3) Current Mirror Clock Amplitude Clock Width Sync Threshold Sync Input Current Error Amplifier Section (V = 5.1V) ...
Page 4
OSCILLATOR SECTION FIGURE 2 - OSCILLATOR CHARGE TIME VS. R ERROR AMPLIFIER SECTION FIGURE 4 - ERROR AMPLIFIER Rev 1.4a Copyright 1996 FIGURE 1 - OSCILLATOR SCHEMATIC FIGURE 3 - OSCILLATOR DISCHARGE TIME VS. R AND FIGURE ...
Page 5
OUTPUT SECTION FIGURE 6 -OUTPUT CIRCUIT (½ Circuit Shown) APPLICATION INFORMATION For single-ended supplies, the driver outputs are grounded. The V terminal is switched to ground by the totem-pole source C transistors on alternate oscillator cycles. The low source impedance ...
Page 6
APPLICATION INFORMATION SHUTDOWN OPTIONS 1. Use an external transistor or open-collector comparator to pull down on the Comp terminal. This will set the PWM latch turning off both outputs. If the shutdown signal is momentary, pulse- by-pulse protection can be ...
Page 7
... SG1525AJ/883B J - PACKAGE JAN1525AJ SG1525AJ/DESC SG1525AJ SG2525AJ SG3525AJ SG1527AJ/883B JAN1527AJ SG1527AJ/DESC SG1527AJ SG2527AJ SG3527AJ 16-PIN PLASTIC DIP SG2525AN N - PACKAGE SG3525AN SG2527AN SG3527AN 16-PIN WIDE BODY SG2525ADW PLASTIC S.O.I.C. SG3525ADW DW - PACKAGE SG2527ADW SG3527ADW 20-PIN CERAMIC SG1525AL/883B LEADLESS CHIP CARRIER SG1525AL L- PACKAGE SG1527AL/883B SG1527AL Note 1 ...