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SG1526

Voltage Mode PWM, 500Khz - 8V to 35V Operation -55°C to 125°C

Status: In Production

Features:

  • 8V to 35V Operation
  • 5V Reference Trimmed to ±1%
  • 1Hz to 350kHz Oscillator Range
  • Dual 100mA Source/Sink Outputs
  • Digital Current Limiting
  • Double Pulse Suppression
  • Programmable Deadtime
  • Undervoltage Lockout
  • Single Pulse Metering
  • Programmable Soft-start
  • Wide Current Limit Common Mode
  • Range TTL/CMOS Compatible Logic
  • Ports Symmetry Correction Capability Guaranteed 6 Unit Synchronization
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Device Overview

Summary

The SG1526 is a high-performance monolithic pulse width modulator circuit 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 under voltage 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. This versatile device can be used to implement single-ended or push-pull switching regulators of either polarity, both transformer less and transformer coupled. The SG1526 is characterized for operation over the full military ambient
junction temperature range of -55°C to +150°C. The SG2526 is characterized for operation from -25°C to +150°C, and the SG3526 is characterized for operation from 0°C to +125°C

Additional Features
    • 8V to 35V Operation
    • 5V Reference Trimmed to ±1%
    • 1Hz to 350kHz Oscillator Range
    • Dual 100mA Source/Sink Outputs
    • Digital Current Limiting
    • Double Pulse Suppression
    • Programmable Deadtime
    • Undervoltage Lockout
    • Single Pulse Metering
    • Programmable Soft-start
    • Wide Current Limit Common Mode
    • Range TTL/CMOS Compatible Logic
    • Ports Symmetry Correction Capability Guaranteed 6 Unit Synchronization
Parametrics
Name
Value
Regulator Type
HI Rel Switching Regulators
Configuration
Voltage Mode PWMs
Supported Topology
Push-pull, Single ended
Supported Output
2
Minimum Input Voltage (V)
8
Maximum Input Voltage (V)
35
Output Current (mA) Max
100
Maximum Frequency (kHz)
350
Operating Temperature Range (°C)
-55 to 125
Vref (V)
5
Duty Cycle Max (%)
49
UVLO
Yes
Current Limit
Yes
Quiescent Current (mA) typ
18

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