参数资料
| 型号： | LTC4101EG#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/30页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR BATT CHRG 24-SSOP |
| 标准包装： | 59 |
| 功能： | 充电管理 |
| 电池化学： | 智能电池 |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 管件 |
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LTC4101
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C, unless otherwise noted.
200
Charging Current Error
V DD = 5V
50
Transfer Function of Charger
V DD = 5V
I BAT = 0.120A
100
0
V DCIN = 9V
V DCIN = 20V
V DCIN = 20 V
0
–100
V DCIN = 9V
–50
–100
V DCIN = 28V
–200
0
1
2
3
4
–150
0
1
2
3
4
5
6
CHARGING CURRENT (A)
4101 G09
PIN FUNCTIONS
TGATE (Pin 1): Drives the Top External P-MOSFET of the
Battery Charger Buck Converter.
PGND (Pin 2): High Current Ground Return for BGATE
Driver.
BGATE (Pin 3): Drives the Bottom External N-MOSFET of
the Battery Charger Buck Converter.
INFET (Pin 4): Drives the Gate of the External Input
P-MOSFET.
DCIN (Pin 5): External DC Power Source Input. Bypass to
ground with a 0.1μF capacitor.
CHGEN (Pin 6): Digital Bidirectional Pin to Enable Charger
Function. This pin is connected as a wired AND bus.
The following events will cause the POWER_FAIL bit in
the ChargerStatus register to become set:
1. An external device pulling the CHGEN signal to within
0.9V to GND;
2. The AC adapter voltage is not above the battery
voltage.
CHARGING VOLTAGE (V)
4101 G10
SMBALERT (Pin 7): Active Low Interrupt Output to Host
(referred to as the SMBALERT signal in the SMBus Revi-
sion 1.1 speci?cation). Signals host that there has been a
change of status in the charger registers and that the host
should read the LTC4101 status registers to determine
if any action on its part is required. This signal can be
connected to the optional SMBALERT line of the SMBus.
Open drain with weak current source pull-up to V DD (with
Schottky to allow it to be pulled to 5V externally).
SDA (Pin 8): SMBus Data Signal from Main (host-con-
trolled) SMBus. External pull-up resistor is required.
SCL (Pin 9): SMBus Clock Signal from Main (host-con-
trolled) SMBus. External pull-up resistor is required.
ACP (Pin 10): This Output Indicates the Value of the
DCDIV Comparator. It can be used to indicate whether
AC is present or not.
DCDIV (Pin 11): Supply Divider Input. This is a high im-
pedance comparator input with a 1.2V threshold (rising
edge) and hysteresis.
GND (Pin 12): Ground for Digital and Analog Circuitry.
4101fa
7
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相关代理商/技术参数 |
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