AP3984 datasheet(12/15 Pages) DIODES

12 / 15 page

AP3984

Document number: DS37655 Rev. 3 - 2

12 of 15

www.diodes.com

December 2016

AP3984

Operation Description (Cont.)

Transformer Saturation Protection via Primary Peak Current Limitation

When the power system works abnormally with transformer saturated, the voltage of CS pin will increase promptly and be over the VCS(MAX). If

two consecutive pulses exceed a threshold value (VCS(MAX)), the device shuts down and enters auto-recovery mode.

Over Temperature Protection (OTP)

If the IC junction temperature exceeds the threshold of +150

⁰C, the AP3984 shuts down immediately and enters the hold mode. If the junction

temperature decreases to hysteresis temperature of +100

⁰C, the AP3984 can recover to normal operation. If not, the power system keeps the

hold mode.

Ordering Information

AP3984 X XX - XX

Packing

Package

M : SO-7

G1 : Green

Product Name

RoHS/Green

TR : Tape & Reel

Package

Temperature Range

Part Number

Marking ID

Packing

SO-7

-40°C to +105°C

AP3984MTR-G1

3984M-G1

4000/Tape & Reel

Marking Information

(Top View)

First and Second Lines: Logo and Marking ID

Third Line: Date Code

Y: Year

WW: Work Week of Molding

A: Assembly House Code

XX: 7

th and 8th Digits of Batch No.

AP3984 Datasheet(PDF) 12 Page - Diodes Incorporated

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