AP3983C datasheet(5/13 Pages) DIODES

Part #	AP3983C

Description	HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS

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Manufacturer	DIODES [Diodes Incorporated]

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5 / 13 page

AP3983B/C/D

Document number: DS36784 Rev. 4 - 2

5 of 13

www.diodes.com

July 2016

AP3983B/C/D

Electrical Characteristics (@VCC = 15V, TJ = +25°C, unless otherwise specified.)

Symbol

Parameter

Condition

Min

Typ

Max

Unit

STARTUP AND UVLO SECTION

VTH_ST

Turn-on Voltage

–

13

15.5

18

V

VOPR(MIN)

Turn-off Voltage

–

6

6.8

7.6

V

STANDBY CURRENT SECTION

IST

Turn-on Current

VCC = VTH_ST-1V before

startup

0

0.2

0.6

μA

ICC_OPR

Operating Current

Static current @ no load

350

500

650

OPERATING FREQUENCY SECTION (5% LOAD TO FULL LOAD)

fS(MAX)

Operating Frequency in Full Load

Condition

–

65

80

kHz

Δf/f

Frequency Dithering

5% to 100% of full load

range

4

7

10

%

OPERATING FREQUENCY SECTION (NO LOAD TO 5% OF IOUT(MAX))

fS(MIN)

Output Voltage Detection Frequency

–

1.8

2

2.2

kHz

CURRENT SENSE SECTION

VCS_H

Peak Current Sense Voltage in Heavy

Load

30% to 100% of full load

828

900

972

mV

ΔVCS/VCS

VCS Modulation for Frequency Dithering

–

2.5

–

%

tMOD

VCS Modulation Period

–

250

–

μs

RLINE

Built-in Line Compensation Resistor

–

230

–

Ω



tLEB

Leading Edge Blanking

@ VCS_H and VCS_M

410

500

575

ns

@ VCS_EL

220

250

288

ns

CONSTANT VOLTAGE SECTION

VFB

Equivalent Feedback Voltage @ Light

Load

Closed loop test of VOUT

3.89

3.95

4.01

V

RFB

FB Pin Input Resistance

–

560

700

840

k



VCABLE/VOUT

Cable Compensation Ratio

(VFB@FULLLOAD-VFB)/VFB

5.65

6.00

6.40

%

CONSTANT CURRENT SECTION

tONS/tSW

Secondary Winding Conduction Duty

VFB = 2V

–

4/8

–

POWER MOSFET SECTION

BVDSS

Drain-Source Breakdown Voltage

–

650

–

V

RDS(ON)

On State Resistor

AP3983B

–

9

12



AP3983C

–

5

6

AP3983D

–

2.4

3

PROTECTION FUNCTION SECTION

VFB(OVP)

Over Voltage Protection

–

7.5

–

V

VFB(SCP)

Short Circuit Protection

VFB @ Hiccup

1.4

1.5

1.6

V

TOTP

Shutdown Temperature

–

+125

+160

–

°C

THYS

Temperature Hysteresis

–

+40

–

°C

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