AP65552

Document number: DS37306 Rev. 4 - 4

4 of 13

www.diodes.com

October 2018

© Diodes Incorporated

AP65552

PART OBSOLETE

– NO ALTERNATE PART

Electrical Characteristics (@TA = +25°C, VIN = 12V, unless otherwise specified.)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

SUPPLY VOLTAGE (VIN PIN)

Input Voltage

VIN

—

4.5

—

18

V

Quiescent Current

IQ

VFB = 0.85V

—

0.9

—

mA

Shutdown Supply Current

ISHDN

VEN = 0V

—

3.6

10

μA

UNDERVOLTAGE LOCKOUT

UVLO Threshold

VUVLO

VIN Rising Test VREG5 Voltage

3.45

3.75

4.05

V

UVLO Hysteresis

VHYS

VIN Falling Test VREG5 Voltage

0.19

0.32

0.45

V

ENABLE (EN PIN)

EN High-Level Input Voltage

VENH

—

1.9

—

—

V

EN Low-Level Input Voltage

VENL

—

—

—

0.6

V

VOLTAGE REFERENCE (FB PIN)

Feedback Voltage

VFB

VOUT = 1.05V

0.753

0.765

0.777

V

Feedback Bias Current

IFB

VFB = 0.8V

-0.1

0

0.1

μA

VREG5 OUTPUT

VREG5 Output Voltage

VVREG5

6.0V<VIN<18V 0<IVREG5<5mA

4.7

5.1

5.5

V

Source Current Capability

—

VIN = 6V, VVREG5 = 4V

—

110

—

mA

Load Regulation

—

0<IVREG5<5mA

—

—

60

mV

Line Regulation

—

6.0V<VIN<18V IVREG5 = 5mA

—

—

20

mV

MOSFET

High-side Switch On-Resistance

RDSONH

—

—

0.065

—

Ω

Low-side Switch On-Resistance

RDSONL

—

—

0.036

—

Ω

CURRENT LIMIT

High Level Current Limit

ILIM-H

L=1.5μH

5.6

6.4

7.9

A

ON-TIME TIMER

On Time

tON

VIN=12V, VOUT=1.05V

—

150

—

ns

Minimum Off Time

tOFF-MIN

VFB=0.7V

—

260

310

ns

THERMAL SHUTDOWN

Thermal Shutdown

TOTSD

—

—

+160

—

°C

Thermal Shutdown Hysteresis

THYS

—

—

+30

—

°C

SOFT START (SS PIN)

Soft-Start Source Current

ISS-SOURCE

VSS = 1.2V

4.2

6.0

7.8

μA

Soft-Start Discharge Current

ISS-DISCHARGE

VSS =0.5V

0.1

0.2

—

mA