MC34673 Datasheet, PDF (3/22 Pages) Freescale Semiconductor, Inc – High Input Voltage 1.2A Charger for Single-cell Li-Ion Batteries

PIN CONNECTIONS
PIN CONNECTIONS
VIN ₁
PPR ₂
CHG 3
EPAD
8 ^BAT
7 ^ISET
6 ^FAST
EN 4
5 ^GND
Figure 3. 34673 Pin Connections
Table 1. 34673 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 11.
Pin Number Pin Name Pin Function Formal Name
Definition
1
2
3
4
5
6
7
8
EPAD
VIN
PPR
CHG
EN
GND
FAST
ISET
BAT
EPAD
Input
Output
Output
Input
Ground
Output
Output
Output
N/A
Input supply
The supply input.
Power present
indicator
Indication of the input power status. Open drain output.
Charge indicator ^{Indication of the charge status. Open drain output.}
Enable
Enable logic input.
Ground
Ground.
Fast charge indicator ^{Indication of the fast charge status. Open drain output.}
CC-mode current
setting and charge
current monitor
CC-mode current setting and monitoring pin.
Charger output
The charger output pin. Connect this pin to the Li-Ion battery.
Exposed pad
Exposed pad for thermal dissipation enhancement. Must be soldered on
the large ground plane on the PCB to increase the thermal dissipation.
The pad must be connected to GND electrically.
Analog Integrated Circuit Device Data
Freescale Semiconductor
34673
3