Step-Up/Down DC-DC Converter

in QSOP Package

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.

IN, PS, LX, OUT, PGO to GND ......................... -0.3V to +11.5V

ILIM, ONA, ONB, FB, 3/5,

PGND to GND .......................................................-0.3V to +0.3V

OUT Short Circuit to GND ..........................................Continuous

Output Current ..................................................................350mA

16-Pin QSOP (derate above +70°C by 8.3mW/°C).......667mW

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

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

Storage Temperature Range ........................... -65°C to +160°C

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

ILIM = GND

ONA = GND, ONB = PS, current measured into PS pin

ONA = PS or ONB = GND, current measured into PS pin,

Hysteresis = 15mV typical

CONDITIONS

A

0.35

0.7

1.4

Output PFET Current Limit

µA

0.1

1

Output PFET Leakage Current

Ω

2.3

4.6

1.2

2.4

Output PFET Resistance

0.3

0.5

0.7

0.35

0.5

0.65

µA

0.1

1

LX Leakage Current

Ω

0.9

2.0

LX On-Resistance

0.6

1.3

µA

36

IN Input Current

nA

150

FB Input Current

mV

70

FB Dual-Mode Trip Threshold

4.8

5.2

V

0.9

V

1.8

11.0

Input Voltage

Startup Voltage

1.21

1.25

1.29

V

1.21

1.25

1.29

Reference Voltage

µA

0.1

1

Shutdown Quiescent Current

µA

85

125

Quiescent Current

4.75

5.00

5.25

V

1.25

5.5

Output Voltage Adjustment

Range

%/mA

0.003

Output Load Regulation

%/V

0.15

Output Line Regulation

UNITS

MIN

TYP

MAX

PARAMETER

V

3.17

3.43

3.13

3.30

3.47

Output Voltage

FB = GND,

150mA

V

1.20

1.30

FB Voltage

ILIM = PS

A

0.5

0.8

1.1

LX Current Limit

0.6

0.8

1.0

3/5 = PS

OUT = FB

3/5 = GND