ST PM6613N User Manual

2 to 4-cell Li-Ion, Li-FePO4 battery charger with SMBus

interface, N-channel RBFET and BATFET MOSFET selectors

Features

■ Buck converter

– Synchronous buck converter with

N-channel high-side, low-side power
MOSFET integrated drivers

– 350 kHz or 700 kHz switching frequency,

selectable with SMBus
– AC adapter input voltage range 9 V - 24 V
– 5 V bias input voltage supply
– Battery charge voltage range 2.5 V -18 V
– ±0.5% charge voltage accuracy
– 0.1% cell charge voltage resolution
– ±3% charge current accuracy
– ±3% input current accuracy
– Overvoltage, overcurrent protection
– Battery, inductor, power MOSFET short-

circuit protection
– Internal loop compensation network
– Integrated soft-start

■ Selector

– N-channel ACFET/RBFET MOSFET driver
– N-channel BATFET MOSFET driver

■ System

– 1 mA quiescent supply current
– 17 µA - 35 µA sleep mode current (BATFET

charge pump off - on)
– Thermal shutdown

Applications

■ Mobile PC:

– UMPC/MID and tablets
– Netbook and notebook computers

PM6613N

Data brief

QFN3x3 20L

a synchronous switching DC-DC converter with
N-channel high-side and low-side Power
MOSFET drivers. The possibility to set the
switching frequency with SMBus by choosing one
of the two preset values of 350 kHz or 700 kHz
assures the best trade-off between power
conversion efficiency and PCB cost and size.

Integrated loop compensation network and soft­start allow the reduction of the number of external
components.

The PM6613N integrates 2 charge pumps to drive
N-channel ACFET/RBFET and BATFET
MOSFETs.

The SMBus communication interface is used to
set the battery charge current and voltage.

The PM6613N charges 2 to 4 series Li-Ion or
LiFePO
available in a compact QFN20L 3x3 mm,
package.

Table 1. Device summary

cells, for mobile PC applications. It is

4

Order code Package Packing

PM6613N QFN3x3 20L Tape and reel

Description

The PM6613N is a high efficiency battery charger
with SMBus communication interface. It includes

February 2012 Doc ID 022741 Rev 1 1/8

For further information contact your local STMicroelectronics sales office.

www.st.com

8

Typical application circuit PM6613N

1 Typical application circuit

Figure 1. Typical application circuit

ADP

RFLT1

3.9R

CADP0

2.2uF ; 25V

CADP1

22uF

WAKE

ILIMex t

WAKE

+5V

D2 BAT54JFILM

RILU

1MR

ACOK

IOUT

10kR

RIOUT

100nF

1MR

RACOKU

+5V

CIOUT

ACOK

IOUT_FLT

RACDIVU

110k R

RWAKE

NM

RILL

ALARM

10kR

RALARMU

+5V

ALARM#

SYS

ACFET

1

8

2

7

3

6

nMOS

STL56N3LLH5

56kR

RACDIVL

SDA

10kR

RSDAU

+5V

SDA

STL56N3LLH5

nMOS

6
7
8

22uF

CIN1

6

7

8

nMOS

234

1

45

B2BC

ILIM

15

ILIM

ACOK

16

IOUT

17

ALARM#

18

SCL

19

SDA

20

THP

PH1HIGH

21

PH

HIGH

45
3
2
1

HS

STL56N3LLH5

ADP

430kR

SCL

10kR

RSCLU

+5V

SCL

5

BATFET

BATFETG

ACDIV

14

2

ACDIV

CBT

L1

RSB

RACDVR

B2B

13

B2B

PM6613N

BTST3LOW4GND

RBT 0R

BTST

220nF

PH

4.7uH

10mR

COUT2

BATT

RBFETG

ACDRV

12

LOW

+

+5V

+5V

2.2uF; 10V

CIN05

C5V

STL56N3LLH5

1
2
3

nMOS

4 5

RBFET

3.9kR

ACP

11

ACP

ACN

ACDR V

BATFET

SRN

SRP

DCIN

5

GND

D1

BAT54JFILM

STL56N3LLH5

nMOS

6
7
8

LS

STPS2L30A

10uF

COUT1

10uF

3.9R

RFLT2

10uF

8
7
6

RSA

10mR

SYS

ACN

10

9

8

7

6

10uF

CDC

1R

RDC

+5V

1uF

CBT1

LSG

45
3
2
1

D3

SRN

SRP

BATFET

SYS

2/8 Doc ID 022741 Rev 1

3.9kR

RBATFET

BATT

AM10245v1

PM6613N Device pinout

2 Device pinout

Figure 2. PM6613N pinout

18

17

16

IOUT

ACOK

ILIM

ALARM#

15

14

ACDIV

13

B2B

12

ACDRV

11

ACP

19

20

SCL

1

SDA

PH

2

HIGH

3

BTST

PM6613N

4

LOW

5

GND

DCIN6SRP7SRN8BATFET9ACN

10

AM10244v1

Doc ID 022741 Rev 1 3/8