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Linear Technology - uModule Power Tracking Battery Chargers

Numéro de référence LTM8062
Description uModule Power Tracking Battery Chargers
Fabricant Linear Technology 
Logo Linear Technology 





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LTM8062 fiche technique
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 Resistor Programmable Float Voltage Up to 14.4V
on the LTM8062 and 18.8V on the LTM8062A
n Wide Input Voltage Range: 4.95V to 32V
(40V Abs Max)
n 2A Charge Current
n 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/LTM8062A
32VIN, 2A µModule Power
Tracking Battery Chargers
Description
The LTM®8062/LTM8062A are complete 32VIN, 2A
µModule® power tracking battery chargers. The LTM8062/
LTM8062A provide a constant-current/constant-voltage
charge characteristic, a 2A maximum charge current, and
employ a 3.3V float voltage feedback reference, so any
desired battery float voltage up to 14.4V for the LTM8062
and up to 18.8V for the LTM8062A can be programmed
with a resistor divider.
The LTM8062/LTM8062A employ an input voltage regula-
tion loop, which reduces charge current if the input volt-
age falls below a programmed level, set with a resistor
divider. When the LTM8062/LTM8062A are powered by a
solar panel, this input regulation loop is used to maintain
the panel at peak output power. The LTM8062/LTM8062A
also feature preconditioning trickle charge, bad battery
detection, a choice of termination schemes and automatic
restart.
The LTM8062/LTM8062A are packaged in a thermally en-
hanced, compact (9mm × 15mm ×4.32mm) over-molded
land grid array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM8062/LTM8062A are 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
VIN
6V TO 32V
4.7µF
VINA LTM8062 BAT
VIN BIAS
VINREG
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
123
BATTERY VOLTAGE (V)
4
8062 TA01b
For more information www.linear.com/LTM8062
8062fd
1

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