MP2617H

– SINGLE-CELL SWITCHING CHARGER WITH NVDC POWER PATH

MP2617H Rev. 1.03

www.MonolithicPower.com

4

1/15/2018

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© 2018 MPS. All Rights Reserved.

PIN FUNCTIONS

Package

Pin #

Name

Description

1

BST

Bootstrap. A capacitor is connected between SW and BST to form a floating supply across

the power switch driver

to drive the power switch’s gate above the supply voltage.

2, 4

SW

or equal to12V and the output power include system load and battery charging is over 10W.

3

IN

Power input of the IC from adapter or USB.

5

PGND

Power ground.

6

EN

_____

Function logic control of the IC. Drive EN

_____

to logic low to enable the part. Drive EN

_____

to logic

high to disable the part.

7

M0

Mode select input. M0 sets the input current limit mode in combination with M1.

8

M1

Mode select input. M1 sets the input current limit mode in combination with M0.

9

CHGOK

_____________

Open-drain output. CHGOK

_____________

is pulled low during charging. CHGOK

_____________

is pulled high through

an external resistor to VCC to indicate that the charge is complete.

10

ACOK

__________

Open-drain output. ACOK

__________

is pulled low to indicate the presence of a valid input power

supply. ACOK

__________

is pulled high through an external resistor to VCC to indicate an invalid or

removed input.

11

AGND

Analog ground.

12

SYSFB

SYS voltage program. Connect a resistor divider from SYSFB to SYS and AGND to

program the system output voltage. Leave SYSFB floating to disable the function.

13

SYS

DC/DC regulator output to power the system load and charge the battery.

14

BATT

Positive battery terminal.

15

ISET

Charge current program. A resistor from ISET to AGND can program the charge current

during CC charging. Float ISET to disable the charge function.

16

NTC

Thermistor input. Connect a resistor from NTC to VCC and the thermistor from NTC to

ground. The thermistor is inside the battery pack.

17

ILIM

Input current limit program. A resistor from ILIM to AGND can program the input current

limit with the adapter input.

18

TMR

Set timer-out period. Connect TMR to AGND to disable the internal timer.

19

VLIM

Input voltage limit program.

20

VCC

Supply voltage of the IC.