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LTC1325CN Datasheet

  • LTC1325CN

  • Microprocessor-Controlled Battery Management System

  • 24頁

  • LINER

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LTC1325
Microprocessor-Controlled
Battery Management System
FEATURES
s
s
DESCRIPTION
The LTC
廬
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 30碌A(chǔ) 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
碌P
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
碌
P Control
Flexible Current Regulation:
鈥?Programmable 111kHz PWM Current Regulator
with Built-In PFET Driver
鈥?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
碌
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
10碌F
P1
IRF9730
D1
1N6818
LTC1325
MPU
(e.g. 8051)
p1.4
p1.3
p1.2
R1
+
C
REG
4.7碌F
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
1碌F
100鈩?/div>
R13
R5
+
C1
0.1碌F
C
REG
22碌F
THERM 2
THERM 1
R2
8
9
R3
R4
U
U
U
V
DD
4.5V TO 16V
L1
62碌H
R
TRK
R
DIS
BAT
N1
IRFZ34
R
SENSE
LTC1325 鈥?TA01
1

LTC1325CN 產(chǎn)品屬性

  • LTC1325

  • 20

  • 集成電路 (IC)

  • PMIC - 電池管理

  • -

  • 充電管理

  • 鉛酸，鋰離子，鎳鎘，鎳氫

  • 4.5 V ~ 16 V

  • 0°C ~ 70°C

  • 通孔

  • 18-DIP（0.300"，7.62mm）

  • 18-DIP

  • 管件

LTC1325CN相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
    廠商
    下載
  • 英文版
    Dual Micropower Comparator
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    DUAL MICROPOWER COMPARATOR
    LINER [Lin...
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    Dual Micropower Comparator
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    BANG-BANG Controller
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    BANG-BANG Controller
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  • 英文版
    Window Comparator
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    Window Comparator
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    Window Comparator
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    2-Channel Differential Input 16-Bit No Latency DS ADC
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    2-Channel Differential Input 24-Bit No Latency DS ADC
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  • 英文版
    2-Channel Differential Input 16-Bit No Latency DS ADC
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  • 英文版
    Dual Precision Intrumentation Switched-Capacitor Building Bl...
    LINER [Lin...
  • 英文版
    Switched Capacitor Voltage Converter
    LINER
  • 英文版
    Switched Capacitor Voltage Converter
    LINER [Lin...
  • 英文版
    Programmable Micropower Hex Translator/ Receiver/Driver
    LINER
  • 英文版
    Programmable Micropower Hex Translator/ Receiver/Driver
    LINER [Lin...
  • 英文版
    “Inductorless” 5V to + 5V Converter
    LINER
  • 英文版
    “Inductorless” 5V to + 5V Converter
    LINER [Lin...
  • 英文版
    Dual Micropower Chopper Stabilized Operational Amplifier wit...
    LINER
  • 英文版
    Dual Micropower Zero-Drift Operational Amplifier with Intern...
    LINER [Lin...

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