AAT1232 Datasheet, PDF(2/17 Page) Advanced Analogic Technologies

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AAT1232 Datasheet, PDF (2/17 Pages) Advanced Analogic Technologies – 24V 100mA Step-Up Converter

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AAT1232

24V 100mA Step-Up Converter

Pin Descriptions

Pin #

TSOPJW-12 TDFN34-16

15, 16

6, 7

9, 10

6, 7, 8

1, 2

N/A

Symbol

EN/SET

SEL

VIN

N/C

PGND

GND

FB2

FB1

LIN

Function

Input power pin; connected to the source of the P-channel MOSFET.

Connect a 2.2ÂµF or larger capacitor from these pins to PGND.

IC active high enable pin. Alternative input pin for S2Cwire control uti-

lizing FB2 reference.

Logic high selects FB1 high output reference; logic low selects FB2 low

output reference. Pull low for S2Cwire control. See Tables 1 and 2.

Input voltage for the converter. Connect this pin directly to the VP pin.

No connection. Do not make any connection to this pin.

Boost converter switching node. Connect the power inductor between

the SW pin and the LIN pin.

Power ground for the boost converter; connected to the source of the

internal N-channel MOSFET. Connect input and output capacitor

returns to PGND.

Ground pin.

Feedback pin for low output voltage set point. Pin set to 0.6V when

SEL is low and disabled when SEL is high. Voltage is set from 0.6V to

1.2V using S2Cwire control.

Feedback pin for high output voltage set point. Pin set to 1.2V when

SEL is high and disabled when SEL is low. Disabled with S2Cwire

control.

Switched power input. Connected to the power inductor.

Exposed paddle (bottom). Internally connected to SW. May be exter-

nally connected to SW pins or left floating. Do not connect to GND

or PGND.

Pin Configuration

TSOPJW-12

(Top View)

VP 1

EN/SET 2

SEL 3

VIN 4

N/C 5

SW 6

12 LIN

11 FB1

10 FB2

9 GND

8 PGND

7 SW

TDFN34-16

(Top View)

LIN 1

LIN 2

FB1 3

FB2 4

GND 5

PGND 6

PGND 7

PGND 8

16 VP

15 VP

14 EN/SET

13 SEL

12 VIN

11 N/C

10 SW

9 SW

1232.2006.12.1.3

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