MP2605 MPS, MP2605 Datasheet - Page 5

• Manufacturer Part Number: MP2605
• Description: 1A Li-Ion/Li-Polymer Battery Charger
• Manufacturer: MPS

PIN FUNCTIONS
MP2605 Rev. 0.94
1/25/2010
Pin #
10
1
2
3
4
5
6
7
8
9
GND, Exposed
ACOK
SHDN
Name
BATT
CHG
ISET
TMR
NTC
Pad
VIN
SS
MP2605 – 28V, 1A LINEAR BATTERY CHARGER WITH TRICKLE CHARGE AND TIMER
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
Description
Input Supply Pin. VIN receives the AC adapter or USB supply voltage.
Open-Drain Fault Status Indicator. This pin is high under any fault conditions.
Open-Drain Charge Indicator. This pin is low during charging, is high after battery full
or termination, and is toggling when the battery is in fault condition.
Oscillator Period Timer. Connect a timing capacitor between this pin and GND to set
the oscillator period.
The exposed pad and GND pin must be connected to the same ground plane.
Charger IC Enable. An input “Low” signal at this pin or pin floating will enable the IC.
Soft-Start. Connect a capacitor to ground to set the soft-start time. The rising time
constant is
Constant Charge Current Program Pin. Connect this pin to an external resistor to
program the charging current in CC Mode.
Negative Temperature Coefficient (NTC) Thermistor Pin. Connect a 500kΩ resistor
from this pin to the VIN pin and a 100kΩ NTC resistor (within the battery pack) from
this pin to ground. If NTC function is not used, replace NTC resistor with a regular
100kΩ resistor from this pin to ground. Do not leave this pin floating.
Charger Output.
400
×
© 2010 MPS. All Rights Reserved.
10
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3
×
C
SS
, where C
SS
is in µF.
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5