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PDF LTM8061 Data sheet ( Hoja de datos )
| Número de pieza | LTM8061 | |
| Descripción | uModule Li-Ion / Polymer Battery Charger | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LTM8061 (archivo pdf) en la parte inferior de esta página. Total 22 Páginas | ||
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Features
n Wide Input Voltage Range: 4.95V to 32V
(40V Absolute Maximum)
n Float Voltage Options:
1-Cell: 4.1V, 4.2V
2-Cell: 8.2V, 8.4V
n Programmable Charge Current: Up to 2A
n User-Selectable Charge Termination: C/10 or
Onboard Termination Timer
n Dynamic Charge Rate Programming/Soft-Start Pin
n Programmable Input Current Limit
n Optional Reverse Input Protection
n NTC Resistor Temperature Monitor
n 0.5% Float Voltage Accuracy
n Bad-Battery Detection with Auto-Reset
n Tiny, Low Profile (9mm × 15mm × 4.32mm) Surface
Mount LGA Package
Applications
n Industrial Handheld Instruments
n 12V to 24V Automotive and Heavy Equipment
n Professional Video/Camera Chargers
L, LT, LTC, LTM, Linear Technology, Linear logo, µModule and PolyPhase are registered
trademarks and PowerPath is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners
LTM8061
32V, 2A µModule Li-Ion/
Polymer Battery Charger
Description
The LTM®8061 is a high efficiency 32V, 2A µModule®
standalone Li-Ion battery charger. It is optimized for
one and two-cell packs, with fixed float voltage options:
4.1V, 4.2V, 8.2V and 8.4V. The LTM8061 provides a
constant-current/constant-voltage charge characteristic,
with maximum charge current up to 2A. A precondition
feature trickle charges a depleted battery, and bad battery
detection provides a signal and suspends charging if a
battery does not respond to preconditioning.
The LTM8061 can be configured to terminate charging
when charge current falls to one-tenth the programmed
maximum current or to use an internal timer if a time-
based termination scheme is desired. Once charging is
terminated, the LTM8061 enters a low current standby
mode. An auto-restart feature starts a new charge cycle
if the battery voltage drops 2.5% from the float voltage,
or if a new battery is inserted into a charging system.
The LTM8061 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 LTM8061 is
RoHS compliant.
Typical Application
Standalone Single Cell 2A Li-Ion Battery Charger
with C/10 Termination from 6V to 32V Input
VIN
6V TO 32V
4.7µF
LTM8061-4.1
VINA BAT
VINC/CLP
BIAS
VIN
RUN
RNG/SS
CHRG
TMR FAULT
NTC
GND
8061 TA01a
+ SINGLE
CELL
4.1V
BATTERY
AVAILABLE OPTIONS:
1-CELL: 4.1V, 4.2V
2-CELL: 8.2V, 8.4V
Battery Charging Profile
2500
2000
NORMAL CHARGING
1500
1000
500
0
0
PRECONDITION
TERMINATION
123
BATTERY VOLTAGE (V)
4
8061 TA01b
For more information www.linear.com/LTM8601
8061fa
1
1 page  
Typical Performance Characteristics
LTM8061
Input Current vs IBAT, 8.2VBAT
1600
1400
1200
1000
VINA = 12V
800
600
400
200 VINA = 24V
0
0
500
1000
1500
2000
IBAT (mA)
8061 G07
Input Current vs IBAT, 8.4VBAT
1600
1400
1200
VINA = 12V
1000
800
600
400 VINA = 24V
200
0
0
500
1000
1500
2000
IBAT (mA)
8061 G08
IBIAS vs IBAT, 4.2VBAT
30
25
VINA = 12V
20
15
10
VINA = 24V
5
0
0
500
1000
1500
2000
IBAT (mA)
8061 G10
RNG/SS vs Maximum IBAT
1.2
1.0
0.8
0.6
0.4
0.2
0
0
500
1000
1500
2000
BAT CURRENT (mA)
8061 G13
IBIAS vs IBAT, 8.2VBAT
50
45
40
35 VINA = 12V
30
25
20
15
10
VINA = 24V
5
0
0
500
1000
1500
IBAT (mA)
2000
8061 G11
Quiescent
RUN = 0V
Current
vs
VINA,
80
70
60
50
40
30
20
10
0
0 10 20 30
VINA (V)
40
8061 G14
For more information www.linear.com/LTM8601
IBIAS vs IBAT, 4.1VBAT
25
20
VINA = 12V
15
10
VINA = 24V
5
0
0
500
1000
1500
2000
IBAT (mA)
8061 G09
IBIAS vs IBAT, 8.4VBAT
60
50
VINA = 12V
40
30
20
VINA = 24V
10
0
0
500
1000
1500
2000
IBAT (mA)
8061 G12
Input Standby Current
vs Temperature, 4.1VBAT
6
5
VINA = 12V
4
VINA = 24V
3
2
1
0
–50
0 50
TEMPERATURE (°C)
100
8061 G15
8061fa
5
5 Page 
Applications Information
BATTERY VOLTAGE
BATTERY CHARGE
CURRENT
CHRG
FAULT
RUN
LTM8061
FLOAT VOLTAGE
RECHARGE THRESHOLD
PRECONDITION THRESHOLD
MAXIMUM CHARGE CURRENT
PRECONDITION CURRENT
C/10
0 AMPS
1
0
1
0
1
0 8061 F01
Figure 1. Typical C/10 Terminated Charge Cycle (TMR Grounded, Time Not to Scale)
BATTERY VOLTAGE
BATTERY CHARGE
CURRENT
CHRG
FAULT
RUN
< tEOC/8
tEOC
FLOAT VOLTAGE
RECHARGE THRESHOLD
PRECONDITION THRESHOLD
MAXIMUM CHARGE CURRENT
PRECONDITION CURRENT
C/10 CURRENT
1
0
1
0
1
0
AUTOMATIC
RESTART
8061 F02
Figure 2. Typical EOC (Timer-Based) Terminated Charge Cycle (Capacitor Connected to TMR, Time Not to Scale)
For more information www.linear.com/LTM8601
8061fa
11
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet LTM8061.PDF ] | |
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