AP1609 datasheet(3/8 Pages) DIODES

3 / 8 page

AP1609

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

AP1609 Rev. 1

3 of 8

JANUARY 2007

www.diodes.com

Absolute Maximum Ratings

Parameter

Symbol

Ratings

Units

VIN Pin Voltage

VCC

-0.3 ~ 7

FB Pin Voltage

VFB

-0.3 ~ VCC +0.3

CE Pin Voltage

VCE

-0.3 ~ VCC +0.3

Switch Voltage (LX to GND)

VSW

-0.3 ~ 18

Switch Current

ILX

-3 ~ 0.2

Continuous Total Power

Dissipation

1200

Operating Ambient

Temperature

Topr

-20 ~ +80

Storage Temperature

Tstg

-20 ~ +125

Electrical Characteristics

AP1609

( FOSC = 300kHz, VOUT = 5V )

Ta = 25

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

FB Voltage

VFB

1.20

1.23

1.26

Input Voltage

VCC

2.5

Output Voltage

VOUT

3.0

Maximum Switching

Output Current

IOUT

2.4

Drain-Source On-State

Resistance

RDS (ON)

ID = 2.4A

100

mΩ

Quiescent Current

ICCQ

No Load, FB = 2V, CE = High

130

µA

Shutdown Current

ISD

No Load, CE = Low

µA

Oscillator Frequency

Fosc

Measuring of EXT Waveform,

VIN = Output Voltage +0.3V

240

300

360

kHz

Maximum Duty Ratio

MAXDTY

PFM Duty Ratio

PFMDTY

No Load

CE “High” Voltage

VCEH

No External Components,

VFB = 0V,

Apply 0.65VCC (min.) to CE,

Chip Enable

0.65

*VCC

CE “Low” Voltage

VCEL

Same as VCEH, Chip Disable

0.20

*VCC

Efficiency

EFFI

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