3

FN9263.0

April 11, 2006

Absolute Maximum Ratings

Thermal Information

Lx to GND, AGND and PGND . . . . . . . . . . . . . . . . . . . . -0.5 to +25V

VDD2, OUT, NEG and POS

to GND, AGND and PGND. . . . . . . . . . . . . . . . . . . . . -0.5 to +25V

VDD1, VGH and VGH_M

to GND, AGND and PGND. . . . . . . . . . . . . . . . . . . . . -0.5 to +32V

Differential Voltage Between POS and NEG . . . . . . . . . . . . . . . ±6V

Voltage Between GND, AGND and PGND . . . . . . . . . . . . . . . ±0.5V

All Other Pins to GND, AGND and PGND . . . . . . . . . . -0.5 to +6.5V

Input, Output, or I/O Voltage . . . . . . . . . . . GND -0.3V to VIN + 0.3V

Recommended Operating Conditions

Input Voltage Range, VS . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V

Boost Output Voltage Range, AVDD . . . . . . . . . . . . . . . . . 8V to 20V

Input Capacitance, CIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22µF

Boost Inductor, L1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3µH to 10µH

Output Capacitance, COUT . . . . . . . . . . . . . . . . . . . . . . . . . . 2x22µF

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

Operating Junction Temperature . . . . . . . . . . . . . . .-40°C to +125°C

Thermal Resistance

4x4 QFN Package (Notes 1, 2) . . . . . .

39

2.5

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

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves

Maximum Continuous Junction Temperature . . . . . . . . . . . . 125°C

Power Dissipation

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

1.

Brief TB379.

2. For

Electrical Specifications

Unless Otherwise Noted.

SYMBOL

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

GENERAL

2.7

3.3

5.5

V

0.2

2

µA

ENABLE = 5V, LX not switching

1

mA

UVLO

Undervoltage Lockout Threshold

2.3

2.45

2.6

V

2.2

2.35

2.5

V

Thermal Shutdown Temperature

Temperature Rising

140

°C

Temperature Falling

100

°C

LOGIC INPUT CHARACTERISTICS - ENABLE, VFLK, FREQ, VDPM

Low Voltage Threshold

0.8

V

High Voltage Threshold

2.2

V

Pull-Down Resistor

Enabled, Input at Vin

150

250

400

k

Ω

STEP-UP SWITCHING REGULATOR

Output Voltage Range

VIN*1.25

20

V

Load Regulation

50mA < ILOAD < 250mA

0.2

%

Line Regulation

0.15

0.25

%/V

Overall Accuracy (Line, Load,

Temperature)

10mA < ILOAD < 300mA,

-3

3

%

1.20

1.21

1.22

V

1.19

1.21

1.23

V

ISL97645