ltm8062 Linear Technology Corporation, ltm8062 Datasheet - Page 6

• Manufacturer Part Number: ltm8062
• Description: Ltm8062 32vin, 2a ?module Power Tracking Battery Charger Features
• Manufacturer: Linear Technology Corporation

LTM8062
TYPICAL PERFORMANCE CHARACTERISTICS
PIN FUNCTIONS
GND (Bank 1, Pin L7): Power and Signal Ground Return.
BAT (Bank 2): Battery Charge Current Output Bus. The charge
function operates to achieve the final float voltage at this pin.
The auto-restart feature initiates a new charging cycle when
the voltage at the ADJ pin falls 2.5% below the float voltage.
Once the charge cycle is terminated, the input bias current of
the BAT pin is reduced to minimize battery discharge while
the charger remains connected.
V
diode. Connect the input power here if input reverse voltage
protection is desired.
6
INA
(Bank 3): Anode of input reverse protection Schottky
30
25
20
15
10
40
35
30
25
20
15
10
5
0
5
0
0
0
Temperature Rise vs I
7.2V Float Voltage
Temperature Rise vs I
14.4V Float Voltage
500
500
V
I
I
INA
BAT
BAT
1000
V
1000
= 24V
INA
(mA)
(mA)
= 24V
V
INA
BAT
BAT
= 12V
1500
1500
,
,
8062 G19
8062 G21
2000
2000
V
4.7μF to GND. Connect the input power here if no input reverse
voltage protection is needed.
BIAS (Pin G7): The BIAS pin connects to the internal power bus.
In most cases connect to V
to a power source greater than 2.8V and less than 10V.
CHRG (Pin K7): Open-Collector Charger Status Output; typi-
cally pulled up through a resistor to a reference voltage. This
status pin can be pulled up to voltages as high as V
sink currents up to 10mA. During a battery charging cycle,
CHRG is pulled low. When the charge current falls below C/10,
IN
(Bank 4): Charger Input Supply. Decouple with at least
30
25
20
15
10
5
0
6
5
4
3
2
1
0
–50
0
Temperature Rise vs I
8.4V Float Voltage
V
vs Temperature
IN
T
Standby Mode Current
A
= 25°C, unless otherwise noted.
500
0
TEMPERATURE (°C)
V
INA
I
BAT
1000
= 12V
V
(mA)
INA
BAT
50
V
V
INA
= 12V
INA
. If this is not desirable, connect
BAT
= 24V
= 24V
1500
,
100
8062 G20
8062 G22
2000
IN
and can
8062f