AV3842B Просмотр технического описания (PDF) - Avic Technology

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AV3842B

HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Avic Technology 

@vic AV3842B / 3843B LINEAR INTEGRATED CIRCUIT

HIGH PERFORMANCE CURRENT

MODE CONTROLLERS

DESCRIPTION

The @vic AV3842B/3843B are specifically designed for

Off-Line and dc-to-dc converter applications offering the

designer a cost-effective solution with minimal external

components.

The AV3842B has UVLO thresholds 16V (on) and 10V(off),

ideally suited for off-line converters. The AV3843B is tailored

for lower voltage applications having UVLO thresholds of

8.5V(on) and 7.6V(off).

SOP-8

FEATURES

*Trimmed Oscillator for Precise Frequency Control

*Oscillator Frequency Guaranteed at 250kHz

*Current Mode Operation to 500kHz

*Automatic Feed Forward Compensation

*Latching PWM for Cycle-By-Cycle Current Limiting

*Internally Trimmed Reference with Undervoltage Lockout

*High Current Totem Pole Output

*Undervoltage Lockout with Hysteresis

*Low Startup and Operating Current

BLOCK DIAGRAM

DIP-8

QW-R103-012,A

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