1.5MHz STEP-UP DC-DC CONVERTER

AP3012

6

May 2010 Rev. 1. 6

BCD Semiconductor Manufacturing Limited

Data Sheet

(VIN=3V, VSHDN=3V, TA=25oC, unless otherwise specified.)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Minimum Operating Volt-

age

2.6

V

Maximum Operating Volt-

age

16

V

Feedback Voltage

VFB

VIN=5V, VOUT=24V, IOUT=30mA

1.17

1.25

1.33

V

FB Pin Bias Current

VFB=1.25V

10

45

100

nA

Supply Current

ICC

VSHDN =VFB=VIN, No switching

2.5

3.5

mA

Supply Current

IQ

VSHDN =0V, VFB=0V

0.1

1.0

µA

Switching Frequency

f

1.1

1.5

1.9

MHz

Maximum Duty Cycle

DMAX

85

90

%

Switching Current Limit

Duty Cycle=80%

500

mA

Switch VCESAT

VCESAT

ISW=250mA

300

mV

Switch Leakage Current

VSW=5V

0.01

5

µA

SHDN Voltage High (ON)

VTH

1.5

V

SHDN Voltage Low (OFF)

VTL

0.4

SHDN Pin Bias Current

55

µA

OVP Voltage Threshold

VOVP

29

V

Soft-Start Time

550

µS

Thermal Resistance

(Junction to Case)

θJC

69.57

oC/W

Electrical Characteristics