PM6613N datasheet(5/30 Pages) STMICROELECTRONICS

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PM6613N

Pin description

Table 2. Pin description

Name

Description

1PH

High-side power nMOS driver source. Connection to the high-side

nMOS source pin and low-side nMOS drain pin.

2HIGH

High-side power nMOS driver output. Connection to the high-side

nMOS gate pin. In critical application conditions, a series resistor can

be used to increase the nMOS turn-on/off time and to limit the phase

ringing, R = 4.7

Ω.

3BTST

High-side power nMOS driver power supply. Connection to 5 V power

supply voltage through a Schottky diode, and to the phase net

through a filtering capacitor.

4LOW

Low-side power nMOS driver output. Connection to the low-side

nMOS gate pin. In critical application conditions, a series resistor can

be used to increase the nMOS turn-on/off time and to limit the phase

ringing, R = 4.7

Ω.

GND

Device analog and power ground reference.

6DCIN

5 V input power supply. It is used to bias the internal logic and to

supply the internal power drivers. An RC filter is used to limit inrush

current and voltage spikes, typical value R=1

Ω, C=10 μF.

SRP

Battery charge current sense resistor positive pin.

SRN

Battery charge current sense resistor negative pin.

9BATFET

nMOS driver output. Connection to the BATFET nMOS gate pin,

through a series resistor used to limit the inrush current.

ACN

Input current sense resistor negative input. System power

connection.

ACP

Input current sense resistor positive input. RBFET nNMOS drain pin

connection.

ACDRV

nMOS driver output. Connection to the ACFET and RBFET nMOS

gate pin, through a series resistor used to limit the inrush current.

B2B

Output driven by AC adapter back-to-back MOS switches.

Connection to the ACFET and RBFET nMOS source pins.

ACDIV

Adapter detection pin. Adapter resistor divider connection.

ILIM

Battery charge current limit setting pin.

ACOK

AC adapter detection status pin. Open-drain pin.

It pulls high, when a valid adapter voltage is detected: 2 V < ACDIV <

2.625 V. It pulls low when ACDIV > 2.625 V or ACDIV < 2 V.

IOUT

Adapter/battery charge current output pin, selectable using SMBus

command. IOUT voltage is 20 times the differential voltage across

sense resistor.

ALARM#

Open-drain output pin. Low when a fault condition is detected, to

trigger the system microcontroller interrupt.

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