Part Number |
UC1527A |
Manufacturers |
Texas Instruments |
Logo |
|
Description |
Regulating Pulse Width Modulators |
Datasheet |
UC1527A Datasheet (PDF) |
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UC1525A, UC1527A, UC2525A UC2527A, UC3525A, UC3527A
SLUS191D – FEBRUARY 1997 – REVISED JULY 2017
UCx52xA Regulating Pulse Width Modulators
1 Features
•1 8-V to 35-V Operation • 5.1-V Reference Trimmed to 1% • 100-Hz to 500-kHz Oscillator Range • Separate Oscillator Sync Terminal • Adjustable Dead-Time Control • Internal Soft Start • Pulse-by-Pulse Shutdown • Input Undervoltage Lockout With Hysteresis • Latching PWM to Prevent Multiple Pulses • Dual Source and Sink Output Drivers
2 Applications
• Off-Line and DC/DC Power Supplies • Converters Using Voltage Mode • Single-Ended or Two-Switch Topology Designs • Solar Inverters • Welding Inverters • Motor Control • Battery Chargers
Block Diagram
OSC VREF OUT
16 4
+VIN 15 GROUND 12
SYNC 3 RT 6 CT 5
DISCHARGE 7
Reference Regulator
To Internal Circutry
OSC
UVLO Lockout
Flip Flop
COMPENSATION 9 INV INPUT 1 NI INPUT 2
SOFTSTART 8
Error Amp
3 kŸ SHUTDO.