4

E

，

，

R

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Operating Range

2

5.5

V

Output Voltage Regulation

Accuracy

-1.2

+2

%

Regulator Enabled

50

Supply Current Per Output

Regulator Disabled

0

µA

FB2,3 Voltage

1.212

V

Output Current Limit

300

mA

1

20

µF

Thermal

Shutdown

Temperature

Temperature Rising

160

℃

Thermal

Shutdown

Hysterics

Temperature Falling

20

℃

A

VIN (PIN1):

Power Input for REG1. Bypass to GND with a high quality ceramic capacitor placed as

close as possible to the REG1.

SW (PIN2):

Switching node Output for REG1. Connect this pin to the switching end of the inductor.

GND (PIN3):

Power Ground, as close to the IC as possible.

VOUT2 (PIN4):

Output voltage for REG2, capable of delivering up to 300mA of output current.

FB2 (PIN5):

Output Feedback Sense. Receives the feedback voltage from an external resistive divider

across the output. The output voltage for REG1 is set by a resistive divider according to the following

VINL (PIN6):

Power input for REG2, REG3. Bypass to GND with a high quality ceramic capacitor placed

as close as possible to the IC.

VOUT3 (PIN7):

Output voltage for REG3, capable of delivering up to 300mA of output current.

FB3 (PIN8):

Output Feedback Sense. Receives the feedback voltage from an external resistive divider

across the output. The output voltage for REG3 is set by a resistive divider according to the following

H