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LD7522, LD7522PS, LD7530

Table of contents:
Info of LD7522
Info of LD7522PS
Info of LD7530

LD7522, LD7522PS, LD7530 Selling Leads, Datasheet

MFG:1 Package Cooled:ST D/C:08+

LD7522, LD7522PS, LD7530 Datasheet download

Five Points

Part Number: LD7522

MFG: 1

Package Cooled: ST

D/C: 08+

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LD7522 General Description

The LD7522 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.

Furthermore, to satisfy various protection requirements, both latch-mode protection and auto-recoverable protection can be easily achieved by configuring LD7522 on different operation modes.

The special green-mode control is not only to achieve the low power consumption but also to offer a non-audible-noise operation when the LD7522 is operating under light load or no load condition.

LD7522 Maximum Ratings

Supply Voltage VCC........................... 30V
COMP, CS, (-) LATCH ........................-0.3 ~7V
OVP, BNO.............................. -0.3 ~5V
Junction Temperature ........................150°C
Operating Ambient Temperature ..............-40°C to 85°C
Storage Temperature Range................ -65°C to 150°C
Package Thermal Resistance (SOP-8) ...............160°C/W
Package Thermal Resistance (DIP-8)............. .. 100°C/W
Power Dissipation (SOP-8, at Ambient Temperature = 85°C).... 400mW
Power Dissipation (DIP-8, at Ambient Temperature = 85°C) .. ..650mW
Lead temperature (Soldering, 10sec) .................260°C
ESD Voltage Protection, Human Body Model................3KV
ESD Voltage Protection, Machine Model..................200V
Gate Output Current ............. ... ..........500mA

LD7522 Features

`􀁺 High-Voltage CMOS Process with Excellent ESD protection
`􀁺 Very Low Startup Current (< 35A)
`􀁺 Current Mode Control
`􀁺 Non-audible-noise Green Mode Control
`􀁺 UVLO (Under Voltage Lockout)
`􀁺 LEB (Leading-Edge Blanking) on CS Pin
`􀁺 Internal Slope Compensation
`􀁺 Programmable Line Compensation
`􀁺 OVP (Over Voltage Protection)
`􀁺 OLP (Over Load Protection)
`􀁺 OTP (Over Temperature Protection) through a NTC
`􀁺 Brownout Protection
`􀁺 Flexibility on Latch/Auto-Recoverable Protection Mode
`􀁺 500mA Driving Capability

LD7522 Typical Application

·􀁺 Switching AC/DC Adaptor and Battery Charger
·􀁺 Open Frame Switching Power Supply
·􀁺 LCD Monitor/TV Power

LD7522 Connection Diagram

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