MAX1645B Datasheet, PDF (10/32 Pages) Maxim Integrated Products – Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting

Advanced Chemistry-Independent, Level 2
Battery Charger with Input Current Limiting
Pin Description
PIN NAME
FUNCTION
1
DCIN DC Supply Voltage Input
2
LDO 5.4V Linear-Regulator Voltage Output. Bypass with a 1µF capacitor to GND.
3
CLS Source Current-Limit Input
4
REF 4.096V Reference Voltage Output
5
CCS Charging Source Compensation Capacitor Connection. Connect a 0.01µF capacitor from CCS to GND.
6
CCI Battery Current-Loop Compensation Capacitor Connection. Connect a 0.01µF capacitor from CCI to GND.
7
CCV
Battery Voltage-Loop Compensation Capacitor Connection. Connect a 10kΩ resistor in series with a 0.01µF
capacitor to GND.
8
GND Ground
9
BATT Battery Voltage Output
10
DAC DAC Voltage Output
11
V_DD Logic Circuitry Supply Voltage Input (2.8V to 5.65V)
12
THM Thermistor Voltage Input
13
SCL SMB Clock Input
14
SDA SMB Data Input/Output. Open-drain output. Needs external pullup.
15
INT Interrupt Output. Open-drain output. Needs external pullup.
16
PDL PMOS Load Switch Driver Output
17
CSIN Battery Current-Sense Negative Input
18
CSIP Battery Current-Sense Positive Input
19
PGND Power Ground
20
DLO Low-Side NMOS Driver Output
21
DLOV Low-Side NMOS Driver Supply Voltage. Bypass with 0.1µF capacitor to GND.
22
LX Inductor Voltage Sense Input
23
DHI High-Side NMOS Driver Output
24
BST High-Side Driver Bootstrap Voltage Input. Bypass with 0.1µF capacitor to LX.
25
CSSN Charging Source Current-Sense Negative Input
26
CSSP Charging Source Current-Sense Positive Input
27
PDS Charging Source PMOS Switch Driver Output
28
CVS Charging Source Voltage Input
10 ______________________________________________________________________________________