参数资料
| 型号： | LTC4095EDC#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION/POLY 8-DFN |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4.35 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN（2x2） |
| 包装： | 带卷 (TR) |
LTC4095
SIMPLIFIED BLOCK DIAGRAM
5
8
2.25MHz CLOCK
COUNTER
HPWR
T REF T DIE
IN
+ –
THERMAL
AMP
4.105V
+
RECHRG
RECHARGE
BAT
–
CONTROL
LOGIC
CHARGE
CURRENT
CONTROL
CONSTANT CURRENT/
CONSTANT VOLTAGE
I BAT
BAT
1
TRICKLE
TRICKLE
CHARGE
ENABLE
DUVLO
BAT
2.9V
IN
6
NTC
NTC
TEMP FAULT
TERMINATE
CHARGE
C/10
+
100mV
I BAT
800
+
IN
CHRGR
BAD
TEMP
–
UVLO
3
CHRG
ON
BAT
FAULT
–
4V
M1
BLINK
LOGIC
PROG
GND
SUSP
4
OPERATION
7
Figure 1. LTC4095 Block Diagram
2
4095 F01
Introduction
The LTC4095 is a linear battery charger designed to
charge single-cell lithium-ion batteries. The charger uses
a constant-current/constant-voltage charge algorithm
with a charge current programmable up to 950mA. Ad-
ditional features include automatic recharge, an internal
termination timer, low-battery trickle charge conditioning,
bad-battery detection, and a thermistor sensor input for
out of temperature charge pausing.
Futhermore, the LTC4095 is capable of operating from a
USB power source. In this application, charge current can
be programmed to a maximum of 100mA or 500mA per
USB power speci?cations.
Input Current vs Charge Current
The LTC4095 regulates the total current delivered to the
BAT pin; this is the charge current. To calculate the total
it is necessary to sum the battery charge current, charger
quiescent current and PROG pin current.
Undervoltage Lockout (UVLO)
The undervoltage lockout circuit monitors the input volt-
age (IN) and disables the battery charger until IN rises
above V UVLO (typically 4V). 200mV of hysteresis prevents
oscillations around the trip point. In addition, a differential
undervoltage lockout circuit disables the battery charger
when IN falls to within V DUVLO (typically 40mV) of the
BAT voltage.
Suspend Mode
The LTC4095 can also be disabled by pulling the SUSP
pin above 1.2V. In suspend mode, the battery drain cur-
rent is reduced to 1.3μA and the input current is reduced
to 8.5μA.
input current (i.e., the total current drawn from the IN pin),
4095fa
7
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相关代理商/技术参数 |
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| LTC4096 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Standalone Li-Ion Battery Chargers |
| LTC4096EDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Standalone Li-Ion Battery Chargers |
| LTC4096EDD#PBF | 功能描述:IC CHARGER LI-ION DL 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4096EDD#TRPBF | 功能描述:IC CHARGER LI-ION DL 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4096X | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Standalone Li-Ion Battery Chargers |
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