UC1845AAY Datasheet – Current Mode PWM Controller

Part Number : UC1845AAY

Function : Current Mode PWM Controller

Package : DIP 8 Pin, DIP 14 Pin

Manufacturers : Linfinity Microelectronics

Pinouts :
UC1845AAY datasheet

Description :

The UC184xA 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.

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 within the file :

UC1842AAD, UC1842AAM, UC1842AAY ,UC1842ADM, UC1843AAD

UC1845AAY Datasheet PDF Download

UC1845AAY pdf

CR6842 Datasheet PDF – Green-Power PWM Controller

This is one of the PWM controller types.

Part Number : CR6842

Function : Green-Power PWM Controller

Manufacturers : Chip Rail

Package : DIP 8 Pin, SOP 8 Pin

See the preview image and the PDF file for more information.

CR6842 Pinouts :

CR6842 datasheet

 

Description :

The CR6842 is a low startup current , low cost, current mode PWM controller with Green-Power & burst-mode power-saving operation. The integrated functions such as the leading-edge blanking of the current sensing, internal slope compensation provide the users a high efficiency, low external component counts, and low cost solution for AC/DC power applications.

Features

1. Low Cost, Green-Power Burst-Mode PWM
2. Very Low Start-up Current ( about 6μA)
3. Low Operating Current ( about 3mA)
4. Current Mode Operation
5. Under Voltage Lockout (UVLO)
6. VDD Over Voltage Protection(OVP)
7. programmable over-temperature protection
8. Internal Latch Circuit(OTP,OVP)
9. Built-in soft start with 1ms
10. Built-in Frequency jitter for better EMI Signature
11. Soft Clamped gate output voltage 16.5V

Applications

1. Power Adaptor
2. Battery Charger Adapter
3. Open Frame Switching Power Supply
4. LCD Monitor

 

CR6842 Datasheet PDF Download

CR6842 pdf