AP1603

Document number: DS31131 Rev. 4 - 2

3 of 8

www.diodes.com

February 2014

© Diodes Incorporated

AP1603

Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.)

Symbol

Parameter

Rating

Unit

VCC

Supply Voltage (OUT to GND)

-0.3 to 5.5

V

VREF

REF to GND

-0.3 to VOUT +0.3

V

VSW

Switch Voltage (LX to GND)

-0.3 to VOUT +0.3

V

IOUT

Output Current (OUT)

-0.8 to 0.2

A

ISW

Switch Current (LX)

-0.8 to 0.2

A

TST

Storage Temperature Range

-65 to +150

°C

TOP

Operation Temperature Range

-40 to +85

°C

Electrical Characteristics (VIN =2V, FB =VOUT, RL =∞, TA = 0°C to +85°C, unless otherwise specified. Typical Values @ TA = +25°C)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Minimum Input Voltage

—

0.9

—

V

VIN

Operating Voltage

TA = +25°C

1.1

—

5.5

V

Start-Up Voltage

TA = +25°C,

RL = 3kΩ (Note 4)

—

0.9

1.1

V

Start-Up Voltage Tempco

—

-4

—

mV/°C

Output Voltage Range

2

—

5.5

V

IOUT

Steady-State Output Current (Note 5)

FB = VOUT = 3.3V

100

150

—

mA

VIN = 2.4V, FB = GND,

VOUT = 5V

—

80

—

VREF

Reference Voltage

IREF = 0

1.196

1.22

1.244

V

VOUT

Output Voltage

FB = VOUT

3.17

3.3

3.43

V

FB = GND

4.8

5

5.2

TEMPCO

Reference Voltage Tempco

—

0.05

—

mV/°C

VREF_LOAD

Reference Voltage Load Regulation

IREF = 0 to 20μA

—

15

80

mV

VREF_LINE

Reference Voltage Line Regulation

VIN = 1.1V to 3.6V

—

0.08

1.5

mV/V

RDS (ON)

Internal NFET, PFET On-Resistance

ILX = 100mA

—

0.6

1.0

Ω

ILIM

LX Switch Current Limit (NFET)

0.3

0.35

0.4

A

ILEAK

LX Leakage Current

VLX = 0, 5.5V; VOUT = 5.5V

—

0.05

1

µA

Operating Current into OUT

VOUT = 3.3V

—

16

35

µA

Shutdown Current into OUT

SHDN = GND

—

0.1

1

µA

Efficiency

VOUT = 3.3V, ILOAD = 100mA

—

90

—

%

tON

LX Switch On-Time

3

4

7

µs

tOFF

LX Switch Off-Time

1.0

1.2

1.4

µs

ISHDN

SHDN Input Current

VSHDN = 0 or VOUT

—

0.07

50

nA

VIL

SHDN Input Voltage

Based on VOUT Voltage

—

—

0.2

VOUT

VIH

0.8

—

—

Notes:

4. Start-up voltage operation is guaranteed with the addition of a Schottky 1N5819 external diode between the input and output.

5. Steady-state output current indicates that the device maintains output voltage regulation under load.