Diodes AP3988/89/90 User Manual

Page 5

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AP3988/89/90

Document number: DS36722 Rev. 3 - 2

5 of 13

www.diodes.com

March 2014

© Diodes Incorporated

AP3988/89/90

A Product Line of

Diodes Incorporated

N

E

W

P

R

O

D

U

C

T

Electrical Characteristics

(@V

CC

=15V, T

J

=+25°C, unless otherwise specified.)

Symbol

Parameters

Conditions

Min

Typ

Max

Unit

STARTUP AND UVLO SECTION

V

TH_ST

Turn-on Voltage

13

15

17

V

V

OPR(MIN)

Turn-off Voltage

5.2

5.8

6.4

V

STANDBY CURRENT SECTION

I

ST

Turn-on Current

V

CC

=V

TH_ST

-1V before

startup

0

0.2

0.6

μA

I

CC_OPR

Operating Current

Static current @ no load

550

650

750

OPERATING FREQUENCY SECTION (5% LOAD TO FULL LOAD)

f

S(MAX)

Operating Frequency in Full Load
Condition

60

kHz

Δf/f

Frequency Dithering

5% to 100% of full load
range

4.5

5

5.5

%

OPERATING FREQUENCY SECTION (NO LOAD TO 5% OF I

OUT(MAX)

)

f

S(MIN)

Output Voltage Detection Frequency

1.8

2

2.2

kHz

CURRENT SENSE SECTION

V

CS_H

Peak Current Sense Voltage in Heavy
Load

40% to 100% of full load

874

910

946

mV

V

CS_M

Peak Current Sense Voltage in Middle
Load

18% to 40% of full load

581

605

630

mV

V

CS_L

Peak Current Sense Voltage in Light
Load

5% to 18% of full load

390

405

425

mV

V

CS_EL

Peak Current Sense Voltage in Extra-
Light Load

0% to 5% of full load

216

225

234

mV

ΔV

CS

/V

CS

V

CS

Modulation for Frequency Dithering

2.5

%

t

MOD

V

CS

Modulation Period

14.4

16

17.6

ms

R

LINE

Built-in Line Compensation Resistor

260

330

400

t

LEB

Leading Edge Blanking

@ V

CS_H

and

V

CS_M

410

500

575

ns

@ V

CS_EL

155

200

245

ns

CONSTANT VOLTAGE SECTION

V

FB

Equivalent Feedback Voltage @ Light
Load

Closed loop test of V

OUT

3.94

4.00

4.06

V

I

FB

FB Pin Input Current

V

FB

=4V

3.36

4.20

5.04

μA

V

CABLE

/V

OUT

Cable Compensation Ratio

(V

FB@FULLLOAD

-

V

FB

)

/

V

FB

5.65

6.00

6.40

%

CONSTANT CURRENT SECTION

t

ONS

/t

SW

Secondary Winding Conduction Duty

V

FB

=2V

4/7

POWER TRANSISTOR SECTION

V

CE(SAT)

Collector-emitter Saturation Voltage

AP3988/89: I

C

=0.5A

AP3990: I

C

=1A

0.3

V

h

FE

DC Current Gain

AP3988/89

14

17

AP3990

17

26

I

CEO

Leakage Current

60

μA

PROTECTION FUNCTION SECTION

V

FB(OVP)

Over Voltage Protection

7.5

V

V

FB(SCP)

Short Circuit Protection

V

FB

@ Hiccup

1.4

1.5

1.6

V

T

OTP

Shutdown Temperature

+125

+160

°C

T

HYS

Temperature Hysteresis

+40

°C

Driver Protection Voltage

4

5

6

V

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