AMS4106 データシートの表示（PDF） - Advanced Monolithic Systems Inc

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AMS4106

5A SYNCHRONUS PWM BUCK CONVERTER

Advanced Monolithic Systems Inc 

PIN DESCRIPTION

AMS4106

PIN

NUMBERS

1

NAME

PWRGD

2

SS

3

GND

4, 5

VPWR

6

VIN

7

8

9

10

11

12, 13, 14

15

COMP

F/B

F SET

ENABLE

BST

LX

PGND

16

FDR

AMS4106

DESCRIPTION

Power good output. Open collector output. A low on the pin indicates that the output is less

than the desired output voltage. There is an internal rising filter on the output of the

PWRGD comparator.

Soft start pin connect a capacitor to GND, to slow the start up.

Analog ground-internally connected to the sensitive analog ground circuitry.

Input supply voltage, 4.5 V to 20 V. Must bypass with a low ESR 10–µF ceramic capacitor.

Input supply voltage, 4.5 V to 20 V powers up the internal circuitry. Must bypass with a

low ESR 10–µF ceramic capacitor.

Error amplifier output. Connect frequency compensation network from COMP to GND.

Input pin of the error comparator.

External frequency set 100 Khz-750Khz.

Logic enable/disable device function.

Boost voltage for the output stage drive. Connect a capacitor between LX pin and Boost.

Phase node- Connect to external FET and external L-C filter.

Power Ground-Noisy internal ground-Return currents from the FDR driver output return

through the PGND

Gate drive for low side MOSFET. Connect gate of n-channel MOSFET.

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723

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