1.4MHz SOT23 Current-Mode

Step-Up DC-DC Converter

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

LX to GND ..............................................................-0.3V to +14V

IN, SHDN, FB to GND...............................................-0.3V to +6V

RMS LX Pin Current ..............................................................0.6A

6-Pin SOT23 (derate 9.1mW/°C above +70°C)...........727mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Supply Range

2.6

5.5

V

Output Voltage Adjust Range

Circuit of Figure 1

13

V

UVLO

2.25

2.4

2.55

V

0.2

0.4

Quiescent Current

1

5

mA

0.01

0.5

Shutdown Supply Current

0.01

10

µA

ERROR AMPLIFIER

Feedback Regulation Set Point

1.2

1.24

1.25

V

FB Input Bias Current

21

80

nA

Line Regulation

0.05

0.20

%/V

OSCILLATOR

Frequency

1000

1400

1800

kHz

Maximum Duty Cycle

DC

82

86

%

POWER SWITCH

Current Limit (Note 2)

0.55

0.8

A

On-Resistance

0.7

1

Ω

0.1

1

Leakage Current

10

µA

SOFT-START

Reset Switch Resistance

100

Ω

Charge Current

1.5

4

7.0

µA

CONTROL INPUT

Input Low Voltage

0.3

V

Input High Voltage

1.0

V

25

50

SHDN Input Current

0.01

0.1

µA

Note 1: Thermal properties are specified with product mounted on PC board with one square-inch of copper area and still air.