LTC1731EMS8-8.4#TR Linear Technology, LTC1731EMS8-8.4#TR Datasheet - Page 12

• Manufacturer Part Number: LTC1731EMS8-8.4#TR
• Description: IC BATT CHRG CNTRLR LI-ION 8MSOP
• Manufacturer: Linear Technology

Specifications of LTC1731EMS8-8.4#TR

• Function: Charge Management
• Battery Type: Li-Ion, NiCd, NiMH
• Voltage - Supply: 8.8 V ~ 12 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LTC1731EMS8-8.4TR; LTC1731EMS88.4TR

TYPICAL APPLICATIO
RELATED PARTS
LTC1731-8.2/LTC1731-8.4
PART NUMBER
LT
LT1512
LT1571-1/-2/-5
LTC1615
LT1620
LTC1682
LTC1729
LTC1730
LTC1731-4.1/-4.2
LTC1732
LTC1733
LTC1734
LTC1754
LTC4050
12
®
1510-5
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
DESCRIPTION
500kHz Constant-Voltage/Constant-Current Battery Charger
SEPIC Battery Charger
200kHz/500kHz 1.5A Constant-Current/Constant-Voltage
Battery Charger
SOT-23 Step-Up Switching Regulator
Rail-to-Rail Current Sense Amplifier
Low Noise Doubler Charge Pump
Termination Controller for Li-Ion
Complete Li-Ion Pulse Battery Charger with Internal FET
and Thermal Regulation
Complete Li-Ion Linear Battery Charger Controller
Complete Li-Ion Linear Battery Charger Controller
Complete Li-Ion Linear Battery Charger with Internal FET
ThinSOT Li-Ion Charger
ThinSOT Charge Pump
Complete Li-Ion Charger with Thermistor Interface
CHARGE
STATUS
C
TIMER
0.1 F
U
*
R2
2k
Linear Charger Using a PNP Transistor
2
3
CHRG
TIMER
LTC1731-8.4
GND
V
CC
4
7
SENSE
PROG
DRV
BAT
*AVX 0603ZC104KAT1A
8
6
1
5
R
19.6k
C1
1nF
PROG
Q1
2N5087
R1
10k
COMMENTS
Most Compact, Up to 1.5A, Charges NiCd, NiMH, Li-Ion Cells
V
Charges 1- or 2-Cell Li-Ion Batteries, Preset and Adjustable
Battery Voltages, C/10 Charge Detection
1.2V V
Precise Output Current Programming, Up to 32V V
Output Noise = 60 V
Time or Charge Current Termination, Automatic Charger/Battery
Detection, Status Output, Preconditioning, 8-Lead MSOP
Efficient 1.5A Charger with Many Features Including
Overcurrent Battery Protection
Single Cell Li-Ion; C/10 Detection; Complete Charger
No Firmware Required; AC Adapter Indicator
Automatic Charge and Recharge
1.5A Charger with Many Features Including Thermal Feedback for
Increased Charge Current without Exceeding Maximum
Temperature
Only Two External Components; V
No Diode Needed, No Sense Resistor Needed
I
No Firmware required, AC Adapter Indicator
Automatic Charge and Recharge
OUT
IN
V
IN
Can Be Higher or Lower Than Battery Voltage, 1.5A Switch
= 50mA; 2V V
= 9V
Q2
ZTX749
+
R
0.25
I
SENSE
MBRM120T3
BAT
2-CELL
Li-ION
IN
= 400mA
15V; Up to 34 Output; I
RMS
IN
1731 TA02
C3
1 F
C2
10 F
; 2.5V to 5.5V Output
4.4V; for Backlight White LED
© LINEAR TECHNOLOGY CORPORATION 2000
PROG
Q
LT/TP 0602 2K • PRINTED IN USA
= 20 A
Tracks I
CHARGE
OUT
sn1731 17318fs