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参数资料
| 型号： | LTC4098EUDC#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | BATTERY CHARGE CONTROLLER, 2650 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封装： | 4 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20 |
| 文件页数： | 2/32页 |
| 文件大小： | 443K |
| 代理商： | LTC4098EUDC#PBF |
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LTC4098/LTC4098-1
10
40981fc
VOUT (Pin 12): Output Voltage of the Switching PowerPath
Controller and Input Voltage of the Battery Charger. The
majority of the portable product should be powered from
VOUT. The LTC4098/LTC4098-1 will partition the available
power between the external load on VOUT and the internal
battery charger. Priority is given to the external load and
any extra power is used to charge the battery. An ideal
diode from BAT to VOUT ensures that VOUT is powered even
if the load exceeds the allotted power from VBUS or if the
VBUS power source is removed. VOUT should be bypassed
with a low impedance multilayer ceramic capacitor.
VBUS (Pin 13): Input Voltage for the Switching PowerPath
Controller. VBUS will usually be connected to the USB port
of a computer or a DC output wall adapter. VBUS should
be bypassed with a low impedance multilayer ceramic
capacitor.
SW (Pin 14): The SW pin delivers power from VBUS to
VOUT via the step-down switching regulator. An inductor
should be connected from SW to VOUT. See the Applica-
tions Information section for a discussion of inductance
value and current rating.
D0 (Pin 15): Mode Select Input Pin. D0, in combination with
the D1 pin and the D2 pin, controls the current limit and
battery charger functions of the LTC4098/LTC4098-1 (see
Table 1). This pin is pulled low by a weak current sink.
D1 (Pin 16): Mode Select Input Pin. D1, in combination with
the D0 pin and the D2 pin, controls the current limit and
battery charger functions of the LTC4098/LTC4098-1 (see
Table 1). This pin is pulled low by a weak current sink.
D2 (Pin 17): Mode Select Input Pin. D2, in combination
with the D0 pin and D1 pin, controls the current limit and
battery charger functions of the LTC4098/LTC4098-1 (see
Table 1). This pin is pulled low by a weak current sink.
WALL (Pin 18): External Power Source Sense Input.
WALL should be connected to the output of the external
high voltage switching regulator and to the drain of an
external P-channel MOS transistor. It is used to determine
when power is applied to the external regulator. When
power is detected, ACPR is driven low and the USB input
is automatically disabled.
ACPR (Pin 19): External Power Source Present Output
(Active Low). ACPR indicates that the output of the external
high voltage step-down switching regulator is suitable for
use by the LTC4098/LTC4098-1. It should be connected to
the gate of an external P-channel MOS transistor whose
source is connected to VOUT and whose drain is connected
to WALL. ACPR has a high level of VOUT and a low level
of GND.
VC(Pin20):Bat-TrackExternalSwitchingRegulatorControl
Output. This pin drives the VC pin of a Linear Technology
external step-down switching regulator. In concert with
WALL and ACPR, it will regulate VOUT to maximize battery
charger efficiency.
Exposed Pad (Pin 21): Ground. The Exposed Pad must
be soldered to the PCB.
PIN FUNCTIONS
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| LTC4099 | 制造商:LINER 制造商全称:Linear Technology 功能描述:I2C Controlled USB Power Manager/Charger with Overvoltage Protection |
| LTC4099EPDC#PBF | 功能描述:IC USB PWR MANAGER/CHRGR 20UTQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:PowerPath™ 标准包装:1 系列:- 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:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| LTC4099EPDC#TRMPBF | 制造商:Linear Technology 功能描述: |
| LTC4099EPDC#TRPBF | 功能描述:IC USB PWR MANAGER/CHRGR 20UTQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:PowerPath™ 标准包装:1 系列:- 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:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| LTC4099EPDC-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:I2C Controlled USB Power Manager/Charger with Overvoltage Protection |
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