LTM8062EV#PBF Linear Technology, LTM8062EV#PBF Datasheet

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LTM8062EV#PBF

Manufacturer Part Number
LTM8062EV#PBF
Description
IC, BATT CHRG, Li-Ion, Li-Polymer, 2A, LGA77
Manufacturer
Linear Technology
Datasheet

Specifications of LTM8062EV#PBF

Battery Type
Li-Ion, Li-Polymer
Input Voltage
32V
Battery Charge Voltage
14.4V
Charge Current Max
2A
Battery Ic Case Style
LGA
No. Of Pins
77
No. Of Series Cells
1

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTM8062EV#PBF
Manufacturer:
EVERLIGHT
Quantity:
30 000
Company:
Part Number:
LTM8062EV#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
TYPICAL APPLICATION
FEATURES
n
n
n
n
n
n
n
n
n
APPLICATIONS
n
n
n
n
6V TO 32V
Complete Battery Charger System
Input Supply Voltage Regulation Loop for Peak
Power Tracking in MPPT (Maximum Peak Power
Tracking) Solar Applications
Wide Input Voltage Range: 4.95V to 32V
(40V Abs Max)
2A Charge Current
Resistor Programmable Float Voltage Up to 14.4V
Accommodates Li-Ion/Polymer, LiFePO
Integrated Input Reverse Voltage Protection
User Selectable Termination: C/10 or Termination
Timer
0.75% Float Voltage Reference Accuracy
9mm × 15mm × 4.32mm LGA Package
Industrial Handheld Instruments
12V to 24V Automotive and Heavy Equipment
Desktop Cradle Chargers
Solar Power Battery Charging
V
IN
4.7µF
2A LiFePO
V
V
V
RUN
TMR
NTC
4
INA
IN
INREG
µModule Battery Charger
LTM8062
GND
CHRG
FAULT
8062 TA01a
BIAS
ADJ
BAT
4
, SLA
274k
2.87M
1-CELL
LiFePO
(3.6V)
4
DESCRIPTION
The LTM
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.
32V
Tracking Battery Charger
®
2500
2000
1500
1000
8062 is a complete 32V
IN
500
0
, 2A µModule Power
Charge Current vs Battery Voltage
0
PRECONDITION
1
BATTERY VOLTAGE (V)
TERMINATION
2
NORMAL CHARGING
IN
, 2A µModule
3
8062 TA01b
LTM8062
4
®
power
8062fa
1

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LTM8062EV#PBF Summary of contents

Page 1

... 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. 2500 ...

Page 2

... Maximum Body Solder Temperature ..................... 245°C ORDER INFORMATION LEAD FREE FINISH TRAY LTM8062EV#PBF LTM8062EV#PBF LTM8062IV#PBF LTM8062IV#PBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: This product is only offered in trays ...

Page 3

ELECTRICAL CHARACTERISTICS operating temperature range, otherwise specifications are at T PARAMETER V Maximum Operating Voltage IN V Start Voltage IN V OVLO Threshold IN V OVLO Hysteresis IN V UVLO Threshold IN V UVLO Hysteresis Diode ...

Page 4

LTM8062 TYPICAL PERFORMANCE CHARACTERISTICS Efficiency 4.2V Float BAT 12V INA 24V INA 500 1000 1500 2000 I (mA) BAT 8062 G01 Efficiency vs I ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Input Current 4.2V Float BAT 900 800 700 V = 12V INA 600 500 400 300 V = 24V INA 200 100 0 0 500 1000 1500 2000 I (mA) BAT 8062 G10 Input ...

Page 6

LTM8062 TYPICAL PERFORMANCE CHARACTERISTICS Temperature Rise vs I 7.2V Float Voltage 24V INA 500 1000 I (mA) BAT Temperature Rise vs I 14.4V Float Voltage ...

Page 7

PIN FUNCTIONS the CHRG pin becomes high impedance. If the internal timer is used for termination, the pin stays low during the charg- ing cycle until the charge current drops below a C/10 rate, approximately 200mA, even though the charger ...

Page 8

LTM8062 BLOCK DIAGRAM V INA 0.1µF 0.1µF V INREG 100k INTERNAL COMPENSATION RUN ADJ TMR NTC OPERATION The LTM8062 is a complete monolithic, mid-power, power tracking battery charger, addressing high input voltage ap- plications with solutions that use a minimum ...

Page 9

OPERATION scheme is used, the LTM8062 also supports bad battery detection, which triggers a system fault if a battery stays in precondition mode for more than one-eighth of the total programmed charge cycle time. Once charging terminates and the LTM8062 ...

Page 10

LTM8062 APPLICATIONS INFORMATION For most applications, the design process is straight forward, summarized as follows: 1. Look at Table 1 and find the row that has the desired input voltage range and battery float voltage. 2. Apply the recommended C ...

Page 11

... ESR of the battery, the output may oscillate if no battery is present. The optimum ESR is about 100mΩ, but ESR values both higher and lower will work. Table 2 shows a sample of parts successfully tested by Linear Technology: Table 2 PART NUMBER LTM8062 ...

Page 12

... F04 voltage temperature compensation can be accomplished by incorporating a Linear Technology LM234 into the output feedback network. For example, a 6-cell lead acid battery has a float charge voltage that is commonly specified at 2.25V/cell at 25°C, or 13.5V, and a –3.3mV/°C per cell tem- perature coefficient, or – ...

Page 13

APPLICATIONS INFORMATION network shown in Figure 5, with the desired temperature coefficient (TC) and 25°C float voltage (V specified, and using a convenient value of 2.4k for R necessary resistor values follow the relations –R • (TC • ...

Page 14

LTM8062 APPLICATIONS INFORMATION Status Pins The LTM8062 reports charger status through two open- collector outputs, the CHRG and FAULT pins. These pins can be pulled up as high and can sink up to 10mA. The IN CHRG ...

Page 15

APPLICATIONS INFORMATION impedance. The FAULT pin is pulled low to signal that a fault has been detected. Cycling the charger’s power or shutdown function initiates a new charge cycle, but the LTM8062 charger does not require a manual reset. Once ...

Page 16

LTM8062 APPLICATIONS INFORMATION 4. Connect all of the GND connections to as large a copper pour or plane area as possible on the top layer. Avoid breaking the ground connection between the external components and the LTM8062. 5. For good ...

Page 17

APPLICATIONS INFORMATION While the meaning of each of these coefficients may seem to be intuitive, JEDEC has defined each to avoid confusion and inconsistency. These definitions are given in JESD 51-12, and are quoted or paraphrased below: 1. θ is ...

Page 18

LTM8062 TYPICAL APPLICATIONS Basic 2A, 2-Cell LiFePO V IN 9.5V TO 32V DC 4.7µF 2A Solar Panel Power Manager with 8.4V Lithium Ion Battery Pack and 16V Peak Power Tracking V IN SOLAR POWER UNIT 499k 4.7µF Two LTM8062s Operating ...

Page 19

PACKAGE DESCRIPTION Z Z bbb // 3.810 2.540 1.5875 1.270 0.9525 0.000 1.270 2.540 3.4925 3.810 4.1275 LTM8062 8062fa 19 ...

Page 20

LTM8062 PACKAGE DESCRIPTION PIN NAME PIN A1 GND B1 A2 GND B2 A3 GND B3 A4 GND B4 A5 GND B5 A6 BAT B6 A7 BAT B7 PIN NAME PIN G1 GND H1 G2 GND H2 G3 GND H3 G4 ...

Page 21

... Updated Applications Information Updated/Added Typical Applications Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTM8062 ...

Page 22

... OUT ≤ 5V, 9mm × 15mm × 2.8mm LGA OUT ≤ 5V, OUT ≤ 5V, 9mm × 11.25mm × 2.82mm LGA, OUT ≤ 5V, 9mm × 11.25mm × 2.82mm LGA, OUT ≤ 5V, OUT LT 0311 REV A • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2010 8062fa ...

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