SD6864 Datasheet PDF – Current Mode PWM+PFM Controller

Part Number : SD6864

Function : CURRENT MODE PWM+PFM CONTROLLER WITH BUILT-IN HIGH VOLTAGE MOSFET

Package :  DIP 8 Pin Type

Manufactures : www.silan.com.cn

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SD6864 PWM PFM Controller

Description

SD686X is current mode PWM+PFM controller with built-in high-voltage MOSFET used for SMPS, with low standby power and low start current for power switch. In standby mode, the circuit enters burst mode to reduce the standby power dissipation. The switch frequency is 25~67KHz with jitter frequency for low EMI.

Built-in peak current compensation circuit makes the limit peak current stable even with different input AC voltage. Limitoutput power can be adjusted through the resistor. Maximum peak current compensation during power-on reducespressure on transformer to avoid saturation, the peak current compensation will decrease for balance after power-on.

Pinout

SD6864 pinout datasheet

Features

1. Energy Star 2.0 standard
2. Lower start-up current (3μA)
3. Various switching frequency following load for the higher efficiency
4. Frequency jitter for low EMI
5. Overvoltage, primary winding overcurrent, overload and over temperature protections.

Applications

1. SWPS

Official Homepage : http://www.silan.com.cn/

SD6864 Datasheet PDF

SD6860 pdf

 

74HC157 Datasheet PDF – Quad Multiplexer – Fairchild

Part Number : 74HC157

Function : Quad 2-Input Multiplexer

Package : 16 Pin SOIC, SOP, TSSOP, DIP Type

Manufacturers : ON Semiconductor, Fairchild Semiconductor

Pinouts :

74HC157 datasheet

Description :

The 74HC157 high speed Quad 2-to-1 Line data selector/Multiplexers utilizes advanced silicon-gate CMOS tech nology. It possesses the high noise immunity and low power consumption of standard CMOS integrated circuits, as well as the ability to drive 10 LS-TTL loads.

This device consists of four 2-input digital multiplexers with common select and STROBE inputs. When the STROBE input is at logical “0” the four outputs assume the values as selected from the inputs. When the STROBE input is at a logical “1” the outputs assume logical “0”.

 

74HC157 Truth Table

Features

1. Typical propagation delay : 14 ns data to any output
2. Wide power supply range : 2-6V
3. Low power supply quiescent curretn : 80 uA maximum ( 74HC Series )
4. Fan-out of 10 LS-TTL loads
5. Low input current : 1 uA maximum

Other data sheets within the file : MM74HC157, MM74HC157M, MM74HC157N

74HC157 Datasheet PDF Download


74HC157 pdf