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LD7552

Features: ·High-Voltage CMOS Process with Excellent ESD Protection·Very Low Startup Current (Typical 5 A)·Under Voltage Lockout (UVLO)·Current Mode Control with Cycle-by-Cycle Peak Current Limiting·Leading-Edge Blanking on CS Pin·Programmable Switching Frequency·Internal Slope Compensation·Proprie...

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SeekIC No. : 004393082 Detail

LD7552: Features: ·High-Voltage CMOS Process with Excellent ESD Protection·Very Low Startup Current (Typical 5 A)·Under Voltage Lockout (UVLO)·Current Mode Control with Cycle-by-Cycle Peak Current Limiting·...

LD7552 Data Sheet

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Part Number:
LD7552
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

·High-Voltage CMOS Process with Excellent ESD Protection
·Very Low Startup Current (Typical 5 A)
·Under Voltage Lockout (UVLO)
·Current Mode Control with Cycle-by-Cycle Peak Current Limiting
·Leading-Edge Blanking on CS Pin
·Programmable Switching Frequency
·Internal Slope Compensation
·Proprietary Green-Mode Control for Power Saving
·Non-audible-noise Green Mode Control
·500mA Driving Capability


Application

·Switching AC/DC Adaptor and Battery Charger
·Open Frame Switching Power Supply
·384X Replacement


Pinout

Connection Diagram


Specifications

Supply Voltage VCC ........................36V
COMP, RT, CS  .......................  -0.3 ~7V
Operating Junction Temperature ................  150
Storage Temperature Range.............  -65 to 150
Package thermal resistance (DIP-8) ............. 100 /W
Package thermal resistance (SOP-8) .............160 /W
Lead temperature (LD7552IS & LD7552IN, Soldering, 10sec).. 230
Lead temperature (LD7552BS & LD7552BN, Soldering, 10sec) .  260


Description

The LD7552 is a low cost, low startup current, current mode PWM controller with green-mode power-saving operation. 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 special green-mode control does not only achieve low power consumption but also offer a non-audible-noise operation when the LD7552 operates under light load or no load condition.

The LD7552 is designed for the switching adaptor with 30W~60W output. The LD7552 is offered in both SOP-8 and DIP-8 package.




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