Part Number: UC1845AAY

Function: Current Mode PWM Controller

Package: DIP 8 Pin, DIP 14 Pin

Manufacturer: Linfinity Microelectronics

Image and Pinouts:

Description

The UC1845AAY family of control ICs provides all the necessary features to implement off-line fixed-frequency, current-mode switching power supplies with a minimum of external components. The current mode architecture demonstrates improved load regulation, pulse-by-pulse current limiting and inherent protection of the power supply output switch.

Features

1. OPTIMIZED FOR OFF-LINE AND DC-TO-DC CONVERTERS.

2. AUTOMATIC FEED FORWARD COMPENSATION.

3. PULSE-BY-PULSE CURRENT LIMITING.

4. ENHANCED LOAD RESPONSE CHARACTERISTICS.

5. UNDER-VOLTAGE LOCKOUT WITH HYSTERESIS.

Absolute maximum ratings :

Applications:

1. ECONOMICAL OFF-LINE FLYBACK OR FORWARD CONVERTERS.

2. DC-DC BUCK OR BOOST CONVERTERS.

3. LOW COST DC MOTOR CONTROL.

 

Other data sheets are available within the file:

UC1842AAD, UC1842AAM, UC1842AAY, UC1842ADM, UC1843AAD

UC1845AAY Datasheet PDF Download

Part Number: SW2604A

Function: PWM Switching Power Supply Controller

Package: DIP 8 Pin Type

Manufacturer: Samwin ( www.semipower.com.cn )

Image:

Description

This is High Performance Current Mode PWM Switching Power Supply Controller.

The SW2604A bipolar process, the built-in anti-overload, anti-saturation circuit to meet the green standard switching power supply controller; to improve the consistency of the performance parameters of the circuit, the internal reference voltage specially designed to improve the internal reference voltage accuracy. Using a wide supply (85–265) design, typical output power of 12W, maximum output power up to 15W, the peak output power of 18W. Cheap widely used in switching power supply, such as DVD, set-top boxes, fax machines, printers, LCD displays.

Pinout:

Features

1. Built-in thermal protection circuit
2. Low start-up and operating current
3. VCC over-voltage automatic limit
4. No power output of less than 0.15W
5. Minimal external components

SW2604A Datasheet PDF Download