AP1511 datasheet(4/7 Pages) DIODES

4 / 7 page

AP1511

PWM CONTROL 5A STEP-DOWN CONVERTER

AP1511 Rev. 1

4 of 7

NOVEMBER 2007

www.diodes.com

Electrical Characteristics

( VIN = 12V, TA = 25°C, unless otherwise specified )

Symbol

Parameter

Conditions

Min

Typ.

Max

Unit

VFB

Feedback Voltage

0.784

0.8

0.816

IFB

Feedback Bias Current

IOUT = 0.1A

0.1

0.5

µA

ISW

Switch Current

5.5

ISSS

Current Consumption During

Power Off

VEN = 0V

µA

∆VOUT

/VOUT

Line Regulation

VIN = 3.6V~23V

∆VOUT

/VOUT

Load Regulation

IOUT = 0 to 5A

0.5

fOSC

Oscillation Frequency

Measure waveform at SW pin

240

300

360

KHz

fOSC1

Frequency of Current Limit or

Short Circuit Protect

Measure waveform at SW pin

KHz

VSH

Evaluate oscillation at SW pin

2.0

VSL

Power-Off Pin Input Voltage

Evaluate oscillation stop at SW pin

0.8

ISH

µA

ISL

Power-Off Pin Input Leakage

Current

-10

µA

IOCSET OCSET Pin Bias Current

105

µA

TSS

Soft-Start Time

0.3

VIN = 5V, VFB = 0V

100

RDSON Internal MOSFET Rdson

VIN = 12V, VFB = 0V

mΩ

Efficiency

VIN = 12V, VOUT = 5V

IOUT = 5A

θJA

Thermal Resistance

Junction-to-Ambient

SOP-16 (Note 4)

156

oC/W

θJC

Thermal Resistance

Junction-to-case

SOP-16 (Note 4)

oC/W

Note:

4. Test conditions for SOP-16L: No heat sink.

Not Recommended

for New Designs

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