(Hong Kong)
Product Summary
The LD7522PS is a low startup current, current mode PWM controller with green-mode power-saving operation. The SOP-8/DIP-8 package integrated functions such as the leading-edge blanking of the current sensing, internal slope compensation, line compensation, and several protection features. The protection functions include cycle-by-cycle current limit, OVP, OTP, OLP, and brownout protection. It provides the users a high efficiency, low external component counts solution for AC/DC power applications. The applications of the LD7522PS include Switching AC/DC Adaptor and Battery Charger, Open Frame Switching Power Supply, LCD Monitor/TV Power.
Parametrics
LD7522PS absolute maximum ratings: (1)Supply Voltage VCC: 30V; (2)COMP, CS, (-) LATCH: -0.3 ~7V; (3)OVP, BNO: -0.3 ~5V; (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: 3KV; (13)ESD Voltage Protection, Machine Model: 200V; (14)Gate Output Current: 500mA.
Features
LD7522PS features: (1)High-Voltage CMOS Process with Excellent ESD protection; (2)Very Low Startup Current (< 35μA); (3)Current Mode Control; (4)Non-audible-noise Green Mode Control; (5)UVLO (Under Voltage Lockout); (6)LEB (Leading-Edge Blanking) on CS Pin; (7)Internal Slope Compensation; (8)Programmable Line Compensation; (9)OVP (Over Voltage Protection); (10)OLP (Over Load Protection); (11)OTP (Over Temperature Protection) through a NTC; (12)Brownout Protection; (13)Flexibility on Latch/Auto-Recoverable Protection Mode; (14)500mA Driving Capability.
Diagrams
