Diodes AP1684 Manuel d'utilisateur télécharger pdf (Page 2)

AP1684

Document number: DS36547 Rev. 3 - 2

2 of 13

www.diodes.com

February 2014

AP1684

A Product Line of

Diodes Incorporated

Pin Descriptions

Pin Number

Pin Name

Function

No connection

The initial Tonp tuning resistor

Set the operating mode

Primary current sensing

The feedback voltage sensing from the auxiliary winding

GND

Ground

OUT

Gate driver output

VCC

Supply voltage of gate driver and control circuits of the IC

Functional Block Diagram

Regulator &

Bias

Tons

Detector

Tons

Power_EN

Driver

VCC

OUT

PFM

Vref

CC_CTRL

TONP_CTRL

GND

Vdd

Protection

& Latch

PRO

CS_OCP

FB_CV

FB_OVP

VCC_OVP

Logic

Set Initial Tonp

& Set the IC

Working in BCM

Constant Turn-on Time

Generation

1 2 3 4 5 6 7 ... 12 13

Absolute Maximum Ratings (@T 3
Performance Characteristics 5
FB Leakage Current ( 6
Design Parameters 7
Application Information 7
Figure 3. OVP Circuit 9
Option 1 11
Option 2 11
A Product Line of 13
Diodes Incorporated 13

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Diodes AP1684 Manuel d'utilisateur Page 2

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