Product Summary

The LD7575PS is a current-mode PWM controller with excellent power-saving operation. It features a highvoltage current source to directly supply the startup current from bulk capacitor and further to provide a lossless startup circuit. The integrated functions such as the leading-edge blanking of the current sensing, internal slope compensation, and the small package provide the users a high efficiency, minimum external component counts, and low cost solution for AC/DC power applications.The applications of the LD7575PS include switching AC/DC adapter and battery charger, open frame switching power supply, LCD monitor/TV power.

Parametrics

LD7575PS absolute maximum ratings: (1)Supply voltage VCC: 30V; (2)High-voltage Pin, HV: -0.3V to 500V; (3)COMP, RT, CS: -0.3 to 7V; (4)Junction temperature: 150℃; (5)Operating ambient temperature: -40℃ to 85℃; (6)Storage temperature range: -65℃ to 150℃; (7)Package thermal resistance: (SOP-8) 160℃/W; (8)Package thermal resistance: (DIP-8) 100℃/W; (9)Power dissipation (SOP-8, at ambient temperature = 85℃): 400mW; (10)Power dissipation (DIP-8, at ambient temperature = 85℃): 650mW; (11)Lead temperature (soldering, 10sec): 260℃; (12)ESd voltage protection, human body model (except HV Pin): 3KV; (13)ESD voltage protection, machine model: 200V; (14)Gate output current: 500mA.

Features

LD7575PS features: (1)High-voltage (500V) startup circuit; (2)Current mode control; (3)Non-audible-noise green mode control; (4)UVLO (under voltage lockout); (5)LEB (leading-edge blanking) on CS Pin; (6)Programmable switching frequency; (7)Internal slope compensation; (8)OVP (over voltage protection) on Vcc; (9)OLP (over load protection); (10)500mA driving capability.

Diagrams

LD7575PS block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LD7575PS
LD7575PS

Other


Data Sheet

Negotiable 
Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LD7522
LD7522

Other


Data Sheet

Negotiable 
LD7535
LD7535

Other


Data Sheet

Negotiable 
LD7550
LD7550

Other


Data Sheet

Negotiable 
LD7552
LD7552

Other


Data Sheet

Negotiable 
LD7552BPS
LD7552BPS

Other


Data Sheet

Negotiable 
LD7575PS
LD7575PS

Other


Data Sheet

Negotiable