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LTC1325CSW#TR

Description
IC system batt management 18soic
Categorysemiconductor    Power management   
File Size326KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LTC1325CSW#TR Overview

IC system batt management 18soic

LTC1325CSW#TR Parametric

Parameter NameAttribute value
Datasheets
LTC1325
Product Photos
18-SOIC
18-SOIC
Standard Package1,000
CategoryIntegrated Circuits (ICs)
FamilyPMIC - Battery Manageme
PackagingTape & Reel (TR)
FunctiCharge Manageme
Battery ChemistryLead Acid, Li-Ion, NiCd, NiMH
Voltage - Supply4.5 V ~ 16 V
Operating Temperature0°C ~ 70°C
Mounting TypeSurface Mou
Package / Case18-SOIC (0.295", 7.50mm Width)
Supplier Device Package18-SOIC
LTC1325
Microprocessor-Controlled
Battery Management System
FEATURES
s
s
DESCRIPTION
The LTC
®
1325 provides the core of a flexible, cost-effec-
tive solution for an integrated battery management sys-
tem. The monolithic CMOS chip controls the fast charging
of nickel-cadmium, nickel-metal-hydride, lead-acid or
lithium batteries under microprocessor control. The de-
vice features a programmable 111kHz PWM constant
current source controller with built-in FET driver, 10-bit
ADC, internal voltage regulator, discharge-before-charge
controller, programmable battery voltage attenuator and
an easy-to-use serial interface.
The chip may operate in one of five modes: power shut-
down, idle, discharge, charge or gas gauge. In power
shutdown the supply current drops to 30µA and in the idle
mode, an ADC reading may be made without any switching
noise affecting the accuracy of the measurement. In the
discharge mode, the battery is discharged by an external
transistor while the battery is being monitored by the
LTC1325 for fault conditions. The charge mode is termi-
nated by the
µP
while monitoring any combination of
battery voltage and temperature, ambient temperature
and charge time. The LTC1325 also monitors the battery
for fault conditions before and during charging. In the gas
gauge mode the LTC1325 allows the total charge leaving
the battery to be calculated.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
s
s
s
s
s
s
s
s
s
Fast Charge Nickel-Cadmium, Nickel-Metal-Hydride,
Lithium Ion or Lead-Acid Batteries under
µ
P Control
Flexible Current Regulation:
– Programmable 111kHz PWM Current Regulator
with Built-In PFET Driver
– PFET Current Gating for Use with External Current
Regulator or Current Limited Transformer
Discharge Mode
Measures Battery Voltage, Battery Temperature and
Ambient Temperature with Internal 10-Bit ADC
Battery Voltage, Temperature and Charge Time
Fault Protection
Built-In Voltage Regulator and Programmable
Battery Attenuator
Easy-to-Use 3- or 4-Wire Serial
µ
P Interface
Accurate Gas Gauge Function
Wide Supply Range: V
DD
= 4.5V to 16V
Can Charge Batteries with Voltages Greater Than V
DD
Can Charge Batteries from Charging Supplies Greater
Than V
DD
Digital Input Pins Are High Impedance in
Shutdown Mode
APPLICATIONS
s
System Integrated Battery Charger
TYPICAL APPLICATION
Battery Charger for up to 8 NiCd or NiMH Cells
+
C2
10µF
P1
IRF9730
D1
1N6818
LTC1325
MPU
(e.g. 8051)
p1.4
p1.3
p1.2
R1
+
C
REG
4.7µF
1
2
3
4
5
6
7
REG
D
OUT
D
IN
CS
CLK
LTF
MCV
HTF
GND
V
DD
PGATE
DIS
V
BAT
T
BAT
T
AMB
V
IN
SENSE
FILTER
18
17
16
15
14
13
12
11
10
C
F
1µF
100Ω
R13
R5
+
C1
0.1µF
C
REG
22µF
THERM 2
THERM 1
R2
8
9
R3
R4
U
U
U
V
DD
4.5V TO 16V
L1
62µH
R
TRK
R
DIS
BAT
N1
IRFZ34
R
SENSE
LTC1325 • TA01
1

LTC1325CSW#TR Related Products

LTC1325CSW#TR LTC1325CSW#TRPBF LTC1325CSW#PBF LTC1325CN#PBF
Description IC system batt management 18soic IC BATTERY MANAGMNT SYSTEM18SOIC IC BATTERY MANAGMNT SYSTEM18SOIC IC BATTERY MANAGMNT SYSTEM 18DIP
Brand Name - Linear Technology Linear Technology Linear Technology
Is it Rohs certified? - conform to conform to conform to
Parts packaging code - SOIC SOIC DIP
package instruction - SOP, SOP, DIP,
Contacts - 18 18 18
Manufacturer packaging code - SW SW N
Reach Compliance Code - compliant compliant compliant
ECCN code - EAR99 EAR99 EAR99
Is Samacsys - N N N
Analog Integrated Circuits - Other Types - BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER
control mode - CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology - PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage - 16 V 16 V 16 V
Minimum input voltage - 4.5 V 4.5 V 4.5 V
JESD-30 code - R-PDSO-G18 R-PDSO-G18 R-PDIP-T18
JESD-609 code - e3 e3 e3
Humidity sensitivity level - 1 1 1
Number of functions - 1 1 1
Number of terminals - 18 18 18
Maximum operating temperature - 70 °C 70 °C 70 °C
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - SOP SOP DIP
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR
Package form - SMALL OUTLINE SMALL OUTLINE IN-LINE
Peak Reflow Temperature (Celsius) - 260 260 NOT SPECIFIED
Certification status - Not Qualified Not Qualified Not Qualified
Maximum seat height - 2.642 mm 2.65 mm 3.81 mm
Maximum supply current (Isup) - 2 mA 2 mA 2 mA
surface mount - YES YES NO
Switch configuration - SINGLE SINGLE SINGLE
Maximum switching frequency - 111 kHz 111 kHz 111 kHz
technology - CMOS CMOS CMOS
Temperature level - COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface - Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form - GULL WING GULL WING THROUGH-HOLE
Terminal pitch - 1.27 mm 1.27 mm 2.54 mm
Terminal location - DUAL DUAL DUAL
Maximum time at peak reflow temperature - 30 30 NOT SPECIFIED
width - 7.493 mm 7.5 mm 7.62 mm
Base Number Matches - 1 1 1
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