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参数资料
| 型号： | LTC1980EGN |
| 厂商： | Linear Technology |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC PWM BATT CHARGER/CONV 24-SSOP |
| 标准包装： | 55 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子，镍镉，镍氢 |
| 电源电压： | 2.85 V ~ 10 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 管件 |
LTC1980
PI FU CTIO S
REG (Pin 15): Bidirectional Regulator Mode Control Pin. A
pull-up resistor is required between this pin and V BIAS2 .
This pin is open when charging normally, has a weak pull-
down (approximately 5 μ A) when conditioning the battery
and a strong pull-down when in regulator mode. Pulling
this pin low forces the IC into regulator mode.
MODE (Pin 16): Selects different operating modes in both
charger and DC/DC converter configurations. Also en-
ables and disables Burst Mode operation. See Mode Pin
Operation table in Application section.
TIMER (Pin 17): A timing capacitor on this pin determines
the normal charge time for charge termination.
C( μ F) = 0.25 ? Time (Hours)
V BAT (Pin 18): This pin connects to the positive terminal of
the battery and the battery side of the power converter.
V BIAS2 (Pin 19): Internally Generated Voltage. Bypass this
pin with a 1 μ F or larger ceramic capacitor (or other low
ESR capacitor). Do not connect any load to this pin.
GND (Pin 20): Signal Ground. This pin should Kelvin-
connect to the current sense resistor (R SENSE ).
I SENSE (Pin 21): Current Sense Input Pin. Connects inter-
nally to a current amplifier and zero current comparator.
This pin should Kelvin-connect to the current sense resis-
tor (R SENSE ) .
CAOUT (Pin 22): Current Amplifier Output. A program
resistor connects between this pin and PROGT (Pin 2) to
set the charge current (in constant-current mode).
OVP (Pin 23): Overvoltage Protection. This pin connects
to the tap on an optional external voltage divider con-
nected across the battery. This allows nonstandard float
voltages to be used for the battery charger. Overvoltage,
restart and undervoltage thresholds will also be affected
by the external voltage division ratio. To use this pin,
BATT1 (Pin 9) must float.
SS (Pin 24): Soft-Start. A capacitor between this pin and
ground sets the battery charge ramp rate. Battery charge
current is very low the moment after the converter switches
from DC/DC converter (regulator) mode to battery charger
mode then ramps up to final battery charge current from
there. This insures that the wall adapter is not loaded down
with a large inrush current that could prevent correct
battery charger operation.
The same capacitor, which sets the soft-start ramp rate,
also sets the compensation for the battery float voltage
control loop.
1980f
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1980EGN#PBF | 功能描述:IC PWM BATT CHARGER/CONV 24-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTC1980EGN#TR | 功能描述:IC PWM BATT CHARGER/CONV 24-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTC1980EGN#TRPBF | 功能描述:IC PWM BATT CHARGER/CONV 24-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTC1981ES5 | 制造商:Linear Technology 功能描述:MOSFET DRVR 1-OUT Hi Side 5-Pin TSOT-23 |
| LTC1981ES5#PBF | 制造商:Linear Technology 功能描述:MOSFET DRVR 1-OUT Hi Side 5-Pin TSOT-23 制造商:Linear Technology 功能描述:DP-Power Controller, CUT TAPE Single Micropower Hi Side Sw Controller 制造商:Linear Technology 功能描述:DRIVER, MOSFET, HIGH/LOW SIDE, SOT-23, Device Type:MOSFET, Module Configuration:High Side, Low Side, Supply Voltage Min:1.8V, Supply Voltage Max:5.5V, Driver Case Style:SOT-23, No. of Pins:5, Operating Temperature Min:-40C , RoHS Compliant: Yes |
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