Ap1605, Electrical characteristics, Pwm/pfm dual-mode step-down switching regulator – Diodes AP1605 User Manual

Page 4

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AP1605

PWM/PFM DUAL-MODE STEP-DOWN SWITCHING

REGULATOR

AP1605 Rev. 2

4 of 8

FEBRUARY 2009

www.diodes.com

©

Diodes Incorporated

Electrical Characteristics

(V

IN

= 5V, T

A

= 25°C, unless otherwise specified)


Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

V

IN

Input Voltage

AP1605 Series

2.5

--

7

V

V

REF

Internal Reference Voltage

1.1625

1.2

1.2375

V

V

UVLO

UVLO Voltage

Voltage required to maintain V

OUT

-- -- 2.2

V

MAXDTY Maximum Duty Ratio

100

--

--

%

PFMDTY PFM Duty Ratio

15

25

35

%

I

SW

Switch Current

Duty = 50%

3

--

--

A

I

SS

Current Consumption
POWER

ON

V

OUT

= 2.5V

--

35

100

µA

I

SSS

Current Consumption
During Power Off

V

ON/OFF

= 0V

--

--

2

µA

∆V

OUT1

Line Regulation

2.5V~7V @ I

OUT

= 0.1A

--

0.2

0.5

%

∆V

OUT2

Load

Regulation

0.1A~3A

--

1

1.5

%

F

OSC

Oscillation

Frequency

220 300 380

KHz

V

CEH

CE Pin “High” Voltage

Evaluate oscillation at SW pin

0.65

--

--

*Vcc

V

CEL

CE

Pin

“Low”

Voltage

Evaluate oscillation stop at SW
pin

-- -- 0.2

I

SH

Power-Off Pin Input
Leakage Current

-- -0.1

--

0.1

µA

I

SL

--

-0.1

--

0.1

µA

EFFI Efficiency

V

IN

= 5V, V

OUT

= 2.5V I

OUT

= 1A

--

93

--

%



























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