This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.


Push-Pull Regulator Positive Output Step-Up/Step-Down DC-DC Controller IC 16-CERDIP

SG1525AJ General Description

The SG1525A/1527A series of pulse width modulator integrated circuit s 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 V reference is trimmed to ±1% initial accuracy and the input common-mode range of the error amplifier includes the reference voltage, eliminating external potentiometers and divider resistors. A Sync input to the oscillator allows multiple units to be slaved together, or a single unit to be synchronized to an external system clock. A single resistor between the CT pin and the D is charge pin provides a wide range of deadtime adjustment. These devices also feature built-in soft-start circuitry with only a timing capacitor required externally. A Shutdown pin controls both the soft -start circuitry and the output stages, providing instantaneous turn-off with soft-start recycle for slow turn-on. These functions are also controlled by an under voltage lockout which keeps the outputs o ff and the soft-start capacitor discharged for input voltages less than that required for normal operation. Another unique feature of these PWM circuits is a latch following the comparator. Once a PWM pulse has been terminated for any reason, the outputs remain off for the duration of the period. The latch is reset with each clock pulse. The output stages are totem-pole designs capable of sourcing or sinking in excess of 200mA. The SG1525A output stage features NOR logic, giving a LOW output for an OFF state. The SG1527A utilizes OR logic, which results in a HIGH output level when OFF.

Microchip Ordering Part Standard Microcircuit Drawing (SMD)

SG1525AF-DESC Cross Reference 5962-8951101FA

SG1525AF-DESC Cross Reference 5962-8951101FX

SG1525AJ-DESC Cross Reference 5962-8951101EA

SG1525AJ-DESC Cross Reference 5962-8951101EX

SG1525AJ-JAN Cross Reference M38510/12602BEA

SG1525AJ-JAN Cross Reference M38510/12602BEX


Key Features

    • 8V to 35V Operation
    • 5.1V Reference Trimmed to ±1%
    • 100Hz to 500kHz Oscillator Range
    • Separate Oscillator Sync Terminal
    • Adjustable Deadtime Control
    • Internal Soft-start
    • Input Undervoltage Lockout
    • Latching P.W.M. to Prevent Multiple Pulses
    • Dual Source/Sink Output Drivers


Output Type Transistor Driver Function Step-Up/Step-Down
Output Configuration Positive Topology Push-Pull
Number of Outputs 2 Output Phases 1
Voltage - Supply (Vcc/Vdd) 8V ~ 35V Frequency - Switching 100Hz ~ 350kHz
Duty Cycle (Max) 49% Synchronous Rectifier Yes
Clock Sync Yes Control Features Enable, Frequency Control, Soft Start
Operating Temperature -55°C ~ 125°C (TA) Mounting Type Through Hole
Base Product Number SG1525

Service Policies and Others

After-Sales & Settlement Related

payment Payment

Payment Method

TT/Wire Transfer
Western Union
Money Gram

For alternative payment channels, please reach out to us at:

[email protected]
shipping Shipping & Packing

Shipping Method


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

Warranty Warranty

We promise to provide 365 days quality assurance service for all our products.


You need to log in to reply. Sign In | Sign Up

In Stock: 8,197

Minimum Order: 1

Qty. Unit Price Ext. Price
1+ - -

The prices below are for reference only.