LTM8062 Datasheet, PDF (1/20 Pages) Linear Technology – 32VIN, 2A μModule Power Tracking Battery Charger

FEATURES
n _{Complete Battery Charger System}
n _{Input Supply Voltage Regulation Loop for Peak}
Power Tracking in MPPT (Maximum Peak Power
Tracking) Solar Applications
n _{Wide Input Voltage Range: 4.95V to 32V}
(40V Abs Max)
n _{2A Charge Current}
n _{Resistor Programmable Float Voltage Up to 14.4V}
Accommodates Li-Ion/Polymer, LiFePO₄, SLA
n _{Integrated Input Reverse Voltage Protection}
n _{User Selectable Termination: C/10 or Termination}
Timer
n _{0.75% Float Voltage Reference Accuracy}
n _{9mm × 15mm × 4.32mm LGA Package}
APPLICATIONS
n _{Industrial Handheld Instruments}
n _{12V to 24V Automotive and Heavy Equipment}
n _{Desktop Cradle Chargers}
n _{Solar Power Battery Charging}
LTM8062
32V_IN, 2A µModule Power
Tracking Battery Charger
DESCRIPTION
The LTM^®8062 is a complete 32V_IN, 2A μModule^® power
tracking battery charger. The LTM8062 provides a con-
stant-current/constant-voltage charge characteristic, a 2A
maximum charge current, and employs a 3.3V float voltage
feedback reference, so any desired battery float voltage up
to 14.4V can be programmed with a resistor divider.
The LTM8062 employs an input voltage regulation loop,
which reduces charge current if the input voltage falls below
a programmed level, set with a resistor divider. When the
LTM8062 is powered by a solar panel, this input regulation
loop is used to maintain the panel at peak output power.
The LTM8062 also features preconditioning trickle charge,
bad battery detection, a choice of termination schemes
and automatic restart.
The LTM8062 is packaged in a thermally enhanced, com-
pact (9mm × 15mm × 4.32mm) over-molded land grid
array (LGA) package suitable for automated assembly
by standard surface mount equipment. The LTM8062 is
RoHS compliant.
L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
2A LiFePO₄ μModule Battery Charger
V_IN
6V TO 32V
4.7μF
LTM8062
V_INA
BAT
V_IN
BIAS
V_INREG
CHRG
RUN
FAULT
TMR
ADJ
NTC
GND
8062 TA01a
274k
2.87M
1-CELL
LiFePO₄
(3.6V)
Charge Current vs Battery Voltage
2500
2000
NORMAL CHARGING
1500
1000
500
0
0
PRECONDITION
TERMINATION
1
2
3
BATTERY VOLTAGE (V)
4
8062 TA01b
8062f
1