AP6503ASP-13 datasheet(4/15 Pages) DIODES

4 / 15 page

AP6503A

Document number: DS36000 Rev. 4 - 2

4 of 15

www.diodes.com

March 2017

AP6503A

Thermal Resistance (Note 6)

Symbol

Parameter

Rating

Unit

θJA

Junction to Ambient

°C/W

θJC

Junction to Case

°C/W

Note:

6. Test condition: SO-8EP: Device mounted on 1" x 1" FR-4 substrate PC board, 2oz copper, with minimum recommended pad on top layer and

thermal vias to bottom layer ground plane.

Recommended Operating Conditions (Note 7) (@TA = +25°C, unless otherwise specified.)

Symbol

Parameter

Min

Max

Unit

VIN

Supply Voltage

4.75

Operating Ambient Temperature Range

-40

+85

°C

Note:

7. The device function is not guaranteed outside of the recommended operating conditions.

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

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

IIN

Shutdown Supply Current

VEN = 0V

—

0.3

3.0

µA

IIN

Supply Current (Quiescent)

VEN = 2.0V, VFB = 1.0V

—

0.6

1.5

RDS(ON)1

High-Side Switch On-Resistance (Note 8)

—

100

—

mΩ

RDS(ON)2

Low-Side Switch On-Resistance (Note 8)

—

100

—

mΩ

ILIMIT

Peak HS Current Limit

VOUT = 3.3V, Minimum duty

cycle

—

5.5

—

ILIMIT

Valley LS Current Limit

VOUT = 3.3V, From Drain to

Source

—

0.9

—

ISW_LKG

High-Side Switch Leakage Current

VEN = 0V, VSW = 0V,

VSW =12V

—

μA

AVEA

Error Amplifier Voltage Gain

(Note 8)

—

800

—

V/V

GEA

Error Amplifier Transconductance

ΔIC = ±10µA

—

1,000

—

µA/V

GCS

COMP to Current Sense

Transconductance

—

2.8

—

A/V

fSW

Oscillator Frequency

VFB = 0.75V

210

240

260

kHz

fFB

Fold-back Frequency

VFB = 0V

—

kHz

DMAX

Maximum Duty Cycle

VFB = 800mV

—

tON

Minimum On Time

—

130

—

VFB

Feedback Voltage

TA = -40°C to +85°C

900

925

950

OVP

Feedback Overvoltage Threshold

—

1.1

—

VEN_Rising

EN Rising Threshold

—

0.7

0.8

0.9

ENLOCKOUT

EN Lockout Threshold Voltage

—

2.2

2.5

2.7

EN Lockout Hysteresis

—

220

INUVVTH

VIN Undervoltage Threshold Rising

—

3.80

4.05

4.40

INUVHYS

VIN Undervoltage Threshold Hysteresis

—

250

—

ISS

Soft-Start Current

VSS = 0V

—

μA

tSS

Soft-Start Period

CSS = 0.1µF

—

TSD

Thermal Shutdown (Note 8)

—

+160

—

°C

Note:

8. Guaranteed by design.

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