MAX17005A 查看數據表（PDF） - Maxim Integrated

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MAX17005A

1.2MHz, Low-Cost, High-Performance Chargers

Maxim Integrated 

1.2MHz, Low-Cost,

High-Performance Chargers

Pin Description

PIN

NAME

FUNCTION

1

DCIN Charger Bias Supply Input. Bypass DCIN with a 1μF capacitor to PGND.

2

AGND Analog Ground

3

CSIP

Output Current-Sense Positive Input. Connect a current-sense resistor from CSIP to CSIN.

4

CSIN

Output Current-Sense Negative Input

Input Current-Monitor Output. IINP sources the current proportional to the current sensed across

5

IINP

CSSP and CSSN. The transconductance from (CSSP - CSSN) to IINP is 2.8μA/mV. See the Analog

Input Current-Monitor Output section to configure the current monitor for a particular gain setting.

6

BATT Battery Voltage Feedback Input

7

ACOK

AC Detect Output. This open-drain output is high impedance when ACIN is lower than VAA/2.

Connect a 10k
pullup resistor from LDO to ACOK.

8

CSSP Input Current Sense for Positive Input. Connect a current-sense resistor from CSSP to CSSN.

9

CSSN Input Current-Sense Negative Input

Dual Mode™ Input for Setting Maximum Charge Current. ISET can be configured either with a

resistor voltage-divider or with a PWM signal from 128Hz to 500kHz. If there is no clock edge

within 20ms, ISET defaults to analog input mode. Pull ISET to GND to shut down the charger. In the

10

ISET

MAX17015A, when the adapter is absent, drive ISET above 1V to enable IINP during battery

discharge. When the adapter is reinserted, ISET must be released to the correct control level within

300ms.

11

PGND Power Ground Connection for MOSFET Drivers

12

DLO

Low-Side Power-MOSFET Driver Output. Connect to low-side n-channel MOSFET gate.

13

LDO

Linear Regulator Output. LDO provides the power to the MOSFET drivers. LDO is the output of the 5.4V

linear regulator supplied from DCIN. Bypass LDO with a 4.7μF ceramic capacitor from LDO to PGND.

14

BST

High-Side Driver Supply. Connect a 0.68μF capacitor from BST to LX.

15

DHI

High-Side Power-MOSFET Driver Output. Connect to high-side n-channel MOSFET gate.

16

LX

High-Side Driver Source Connection. Connect a 0.68μF capacitor from BST to LX.

17

ACIN

AC Adapter Detect Input. ACIN is the input to an uncommitted comparator.

18

VAA

4.2V Voltage Reference and Device Power-Supply Input. Bypass VAA with a 1μF capacitor to GND.

19

CC

Voltage Regulation Loop-Compensation Point. Connect 3k
and 0.01μF capacitor in series from

CC to GND.

20

VCTL

Battery Voltage Adjust Input. VCTL sets the number of cells and adjusts the voltage per cell. The

adjustment range is 4.2V to 4.4V per cell. See the Setting Charge Voltage section.

—

BP

Backside Paddle. Connect the backside paddle to analog ground.

Dual Mode is a trademark of Maxim Integrated Products, Inc.

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