Product Summary
The SG1526J is a high performance monolithic pulse width modulator circuit. The SG1526J is designed for fixed-frequency switching regulators and other power control applications. Included in an 18-pin dual-in-line package are a temperature compensated voltage reference, sawtooth oscillator, error amplifier, pulse width modulator, pulse metering and steering logic, and two low impedance power drivers. Also included are protective features such as soft-start and undervoltage lockout, digital current limiting, double pulse inhibit, a data latch for single pulse metering, adjustable deadtime, and provision for symmetry correction inputs. For ease of interface, all digital control ports are TTL and B-series CMOS compatible. Active LOW logic design allows wired-OR connections for maximum flexibility. The SG1526J can be used to implement single-ended or push-pull switching regulators of either polarity, both transformerless and transformer coupled.
Parametrics
SG1526J absolute maximum ratings: (1)Input Voltage (VIN): 40V; (2)Collector Supply Voltage (VC): 40V; (3)Logic Inputs: -0.3 to 5.5V; (4)Analog Inputs: -0.3V to VIN; (5)Source/Sink Load Current (each output): 200mA; (6)Reference Load Current: 50mA; (7)Logic Sink Current: 15mA; (8)Operating Junction Temperature: 150℃; (9)Storage Temperature Range: -65 to 150℃; (10)Lead Temperature (Soldering, 10 Seconds): 300℃.
Features
SG1526J features: (1)8 to 35 volt operation; (2)5V reference trimmed to ±1%; (3)1Hz to 350KHz oscillator range; (4)Dual 100mA source/sink outputs; (5)Digital current limiting; (6)Double pulse suppression; (7)Programmable deadtime; (8)Undervoltage lockout; (9)Single pulse metering; (10)Programmable soft-start; (11)Wide current limit common mode range; (12)TTL/CMOS compatible logic ports; (13)Symmetry correction capability; (14)Guaranteed 6 unit synchronization.
Diagrams
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![]() SG1524B |
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