DatasheetsPDF.com

UC3837

UTC
Part Number UC3837
Manufacturer UTC
Description LOW COST POWER-SAVING MODE PWM CONTROLLER
Published Sep 1, 2015
Detailed Description UNISONIC TECHNOLOGIES CO., LTD UC3837 Preliminary LINEAR INTEGRATED CIRCUIT LOW COST POWER-SAVING MODE PWM CONTROLL...
Datasheet PDF File UC3837 PDF File

UC3837
UC3837

Overview
UNISONIC TECHNOLOGIES CO.
, LTD UC3837 Preliminary LINEAR INTEGRATED CIRCUIT LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS  DESCRIPTION The UC3837 is a high performance current mode PWM controller ideally suited for low standby power.
Low VDD startup current make the power reliable on startup design and a large value resistor could be used in the startup circuit to minimize the standby power.
At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequency for Higher conversion efficiency at light load condition.
The internal slope compensation improves system stability at high PWM duty cycle output.
Leading-edge blanking on current sense input removes the signal glitch, which offering minimal external component count in the design.
Excellent EMI performance is achieved with UTC proprietary frequency hopping technique (ZL201020615247.
1) together with soft driver control.
Audio noise is eliminated due to switch frequency more than 20kHz during operation.
The UC3837 has such applications as: battery charger, power adaptor, set-top box power supplies, ink jet printers, open-frame SMPS.
54 6 1 23 SOT-26  FEATURES * UTC proprietary frequency hopping technology for Improved EMI * Programming BNO for higher security performance.
* Fixed switch frequency 65kHz * Power-saving mode for high light-load and standby efficiency * Gate output voltage clamped at 15V * Soft Start * Low start-up current * Dynamic peak current limiting for constant output power * Cycle-by-cycle Current Limiting * Built-in synchronized slope compensation * Under voltage lockout (UVLO) * OTP,OLP,OVP and VDD clamp for higher security * Few external components required  ORDERING INFORMATION Ordering Number UC3837G-AG6-R Package SOT-26 Packing Tape Reel UC3837G-AG6-R (1)Packing Type (2)Package Type (3)Green Package (1) R: Tape Reel (2) AG6: SOT-26 (3) G: Halogen Free and Lead Freee www.
unisonic.
com.
tw Copyright © 201...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)