GL494 Datasheet PDF – PWM Control Circuit

Part Number : GL494

Function : PWM Control Circuit

Package : DIP 16 Pin Type

Manufacturers : Hynix Semiconductor

Pinouts :

GL494 datasheet


Description :

The GL494 incorporates on a single monolithic chip all the functions required in the construction of a pulse-width modulation control circuit.

Designed primarily for power supply control, the GL494 contains an on-chip 5-volt regulator, two error amplifiers, adjustable oscillator, deadtime control comparator, pulse-steering flip-flop, and output control circuitry.

Block Diagram


1. Complete PWM Power Control Circuitry

2. Uncommitted Outputs for 200mA Sink or Source

3. Output Control Selects Single-Ended or Push-Pull Operation

4. Internal Circuitry Prohibits Double Pulse at Either Output

5. Internal Regulator Provides a Stable 5V Reference Supply

6. Variable Dead-Time Provides Control Over Total Range

Other data sheets within the file : L494

GL494 Datasheet PDF Download

GL494 pdf


MAX8772 Datasheet PDF – Quick PWM Controller

Part Number : MAX8772

Function : Dual-Phase, Quick PWM Controller for IMVP-6+ CPU Core Power Supplies

Package : QFN 40 Pin Type ( 6mm x 6mm )

Manufacturers : Maxim Integrated

Image :
MAX8772 datasheet

Description :

The MAX8770, MAX8771, MAX8772 are 2/1-phase interleaved Quick-PWM step-down VID power supply controllers for notebook CPUs. True out-of-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties.

The Quick-PWM control provides instanta neous response to fast load current steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk out put capacitors.

Pinouts :

Features :

1. 7-Bit On-Board DAC: 0 to +1.5000V Output Adjust Range

2. Dynamic Phase Selection Optimizes Active/Sleep Efficiency

3. Transient Phase Overlap Reduces Output Capacitance

4. Integrated Boost Switches

5. Active Voltage Positioning with Adjustable Gain

6. Programmable 200kHz to 600kHz Switching Frequency


MAX8772 Datasheet PDF Download

MAX8772 pdf

Other data sheets within the file :

MAX8770GTL+, MAX8771, MAX8771GTL+, MAX8772