Chemistry-Independent

Battery Chargers

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7

______________________________________________________________Pin Description

Linear Current-Source Output

—

1

IOUT

Input Voltage for Powering Charger

1

2

DCIN

Voltage-Regulation-Loop Compensation Point

3

4

CCV

Chip Power Supply. 5.4V linear regulator output from DCIN.

2

3

VL

Current-Range Selector. Tying SEL to VL sets a 4A full-scale current. Leaving SEL open

sets a 2A full-scale current. Tying SEL to AGND sets a 1A full-scale current.

—

6

SEL

Battery Voltage Input and Current-Sense Negative Input

6

8

BATT

Current-Sense Positive Input

5

7

CS

Current-Regulation-Loop Compensation Point

4

5

CCI

3.9V Reference Voltage Output or External Reference Input

7

9

REF

Current-Regulation-Loop Set Point

10

—

SETI

Voltage-Regulation-Loop Set Point

11

—

SETV

Open-Drain Interrupt Output

—

11

INT

Analog Ground

8

10

AGND

Thermistor Sense Voltage Input

9

12

THM

Serial Data

—

14

SDA

Power Ground

12

16

PGND

Voltage DAC Output

—

15

DACV

Serial Clock

—

13

SCL

High-Side Power MOSFET Driver Output

14

18

DHI

Power Connection for the High-Side Power MOSFET Driver

16

20

BST

Power Connection for the High-Side Power MOSFET Driver

15

19

LX

Low-Side Power MOSFET Driver Output

13

17

DLO

FUNCTION

PIN

MAX1647

MAX1648

NAME