ML4800 Datasheet – Factor Correction and PWM Controller

Part Number : ML4800

Function : Power Factor Correction and PWM Controller Combo

Package : DIP, SOIC 16 Pin Type

Manufacturers : Fairchild Semiconductor

Pinouts :

ML4800 datasheet

 

Description :

The ML4800 is a controller for power factor corrected,switched mode power supplies. Power Factor Correction(PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully complies with IEC1000-3-2 specification.

Intended as a BiCMOS version of the industry-standard ML4824, the ML4800 includes circuits for the implementation of leading edge, average current, “boost” type power factor correction and a trailing edge, pulse width modulator (PWM). It also includes a TriFault Detect™ function to help ensure that no unsafe conditions will result from single component failure in the PFC. Gate-drivers with 1A capabilities minimize the need for external driver circuits. Low power requirements improve efficiency and reduce component costs.

Features

1. Internally synchronized leading-edge PFC and trailing edge PWM in one IC

2. TriFault Detect for UL1950 compliance and enhanced safety

3. Slew rate enhanced transconductance error amplifier for ultra-fast PFC response

4. Low power: 200µA startup current, 5.5mA operating current

5. Low total harmonic distortion, high PF

6. Reduced ripple current in storage capacitor between PFC and PWM sections

7. Average current, continuous boost leading edge PFC

8. PWM configurable for current-mode or voltage mode operation

9. Current fed gain modulator for improved noise immunity

10. Overvoltage and brown-out protection, UVLO, and soft start

 

ML4800 Datasheet PDF Download


ML4800 pdf

Other data sheets within the file : ML4800CP, ML4800CS ,ML4800IP, ML4800IS

AP1510 Datasheet – Step-down Switching Regulator

Part Number : AP1510

Function : PWM CONTROL 3A STEP-DOWN CONVERTER

Package : SO-8 Pin Type

Manufacturers : Diodes Incorporated.

Image :

AP1510 datasheet

 

Description :

AP1510 consists of step-down switching regulator with PWM control. These devices include a reference voltage source, oscillation circuit, error amplifier and internal PMOS.

AP1510 provides low-ripple power, high efficiency and excellent transient characteristics. The PWM control circuit is able to vary the duty ratio linearly from 0 up to 100%. This converter also contains an error amplifier circuit. An enable function, an over current protection
and a short circuit protection are built inside, when OCP or SCP happens, the operation frequency will be reduced from 300kHz to 30kHz. Also, an internal compensation block is built in to minimum external component count.

Pinouts :

AP1510 pinout

 

Features

1. Input Voltage: 3.6V to 23V

2. Output Voltage: 0.8V to VCC

3. Duty Ratio: 0% to 100% PWM Control

4. Oscillation Frequency: 300kHz Typ

5. Current Limit, Enable Function

6. Thermal Shutdown Function

7. Built-in Internal SW P-channel MOS

8. Totally Lead-Free & Fully RoHS Compliant

9. Halogen and Antimony Free.“Green” Device

 

Applications

1. Cellular Phones

2. PC Motherboard

3. LCD Monitor

4. Graphic Card

5. DVD-Video Player

6. Telecom Equipment

7. ADSL Modem

8. Printer and Other Peripheral Equipment

 

 

Other data sheets within the file : AP1510SG-13, AP1510SL-13

AP1510 Datasheet PDF Download


AP1510 pdf