AP1603

STEP-UP DC/DC CONVERTER

AP1603

Document number: DS31131 Rev. 3 - 2

4 of 10

www.diodes.com

June 2010

© Diodes Incorporated

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

Supply Voltage (OUT to GND)

-0.3 to 5.5

V

REF to GND

V

Switch Voltage (LX to GND)

V

Output Current (OUT)

-0.8 to 0.2

A

Switch Current (LX)

-0.8 to 0.2

A

Storage Temperature Range

-65 to +150

Operation Temperature Range

-40 to +85

Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ.

Max

Unit

Minimum Input Voltage

-

0.9

-

V

Operating Voltage

1.1

-

5.5

V

Start-Up Voltage

RL = 3k

Ω (Note 2)

-

0.9

1.1

V

Start-Up Voltage Tempco

-

-4

-

mV/°C

Output Voltage Range

2

-

5.5

V

Steady-State Output Current

(Note 3)

100

150

-

mA

-

80

-

Reference Voltage

1.196

1.22

1.244

V

Output Voltage

3.17

3.3

3.43

V

FB = GND

4.8

5

5.2

TEMPCO

Reference Voltage Tempco

-

0.05

-

mV/°C

Reference Voltage Load

Regulation

-

15

80

mV

Reference Voltage Line

Regulation

-

0.08

1.5

mV/V

Internal NFET, PFET On-

Resistance

-

0.6

1.0

Ω

LX Switch Current Limit

(NFET)

0.3

0.35

0.4

A

LX Leakage Current

-

0.05

1

μA

Operating Current into OUT

-

16

35

μA

Shutdown Current into OUT

SHDN

= GND

-

0.1

1

μA

Efficiency

-

90

-

%

LX Switch On-Time

3

4

7

μs

LX Switch Off-Time

1.0

1.2

1.4

μs

SHDN

Input Current

-

0.07

50

nA

SHDN

Input Voltage

-

-

0.2

0.8

-

-

Notes:

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

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