MP2615GQ-Z Datasheet, PDF (5/21 Pages) MPS Industries, Inc. – 2A, 1- or 2- Cell Li-ion Battery Charger In 3mm x 3mm Package

MP2615 – 2A, 1- CELL OR 2- CELL LI-ION BATTERY CHARGER
PIN FUNCTIONS
Package
Pin #
Name
Description
1
SW Switch Output
2
VIN Power Supply Voltage.
Coarse Regulator Output. Internally generated 4.5V. Bypass with a 1µF capacitor to AGND.
3
VCC Used to be low-side switch driver and pull-up bias voltage NTC resistive divider. Do not
connect any external load at this pin.
4
CELL
Command Input for the Number of Li-Ion Cells. Connect this pin to VCC for 1-cell
application and short it to AGND or keep it floating for 2- Cell application.
Input Pin for Setting Terminal Battery Voltage:
5
SEL SEL = Low-level or Float: V_BATT = 4.2V/Cell.
SEL = High-level: V_BATT =4.1V/Cell.
6
EN ^{On/ Off Control Input. This pin is pulled to GND with a 1Meg internal resistor.}
7
N/C NO CONNECT. Please leave this pin floating.
8
AGND Analog Ground.
9
BATT Positive Battery Terminal.
10
CSP Battery Current Sense Positive Input. Connect a resistor RS1 between CSP and BATT.
11
Charging Completion Indicator. A logic Low indicates charging operation. The pin will
CHGOK _{become an open drain once the charge is completed or suspended.}
12
ACOK
Valid Input Supply Indicator. A logic Low on this pin indicates the presence of a valid input
power supply.
13
NTC
Thermistor Input. Connect a resistor from this pin to the pin VCC and the thermistor from
this pin to ground.
14
TMR
Internal Safety Timer Control. Connect a capacitor from this node to AGND to set the timer.
And the timer can be disabled by connecting this pin to AGND directly.
Bootstrap pin. A capacitor is needed to drive the power switch’s gate above the supply
15
BST voltage. It is connected between SW and BST pins to form a floating supply across the
power switch driver.
16
PGND Power Ground.
MP2615 Rev. 1.0
www.MonolithicPower.com
5
1/16/2014
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.