5

Oct. 2009 Rev. 1. 8

BCD Semiconductor Manufacturing Limited

Data Sheet

WHITE LED STEP-UP CONVERTER

AP3029

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Minimum Operating Voltage

2.5

V

Maximum Operating Voltage

16

Feedback Voltage

188

200

212

mV

FB Pin Bias Current

35

100

nA

Supply Current

2.5

3.2

mA

Shutdown Quiescent Current

2.0

3.2

5.0

µA

Switching Frequency

f

1.2

MHz

Maximum Duty Cycle

90

93

%

Switch Current Limit (Note 2)

550

mA

550

360

mV

Switch Leakage Current

0.01

5

µA

CTRL Pin Voltage

High

1.8

V

Low

0.05

CTRL Pin Bias Current

40

55

72

µA

50

75

OVP Voltage

29

V

Schottky Forward Drop

0.7

V

Schottky Leakage Current

0.1

4

µA

150

Soft Start Time

t

300

µS

Thermal Resistance

(Junction to Case)

SOT-23-6

60

TSOT-23-6

60

Electrical Characteristics

Note 2:

The Switch Current Limit is related to Duty Cycle. Please refer to Figure 15 for detail.