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參數(shù)資料
| 型號： | LTC1730-4 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Lithium-Ion Battery Pulse Charger(4.1V鋰離子電池脈沖充電器) |
| 中文描述： | 1 A BATTERY CHARGE CONTROLLER, PDSO16 |
| 封裝： | SSOP-16 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 166K |
| 代理商： | LTC1730-4 |
LTC1730-4/LTC1730-4.2
4
PIU
ground and a 1% resistor to V
CC
, this pin can sense the
temperature of the battery pack and stop charging when
the temperature is out of range. When the voltage at this
pin drops below 2V (0.5 V
CC
) at hot temperature or rises
above 3.5V (0.875 V
CC
) at cold with V
CC
= 4V, the charge
cycle is suspended and the internal timer is frozen. The
CHRG pin output status is not affected at this hold state.
When the voltage at this pin is pulled below 50mV, the IC
goes into the shutdown mode. The charging stops (the
GATE pin is pulled to ground) and the CHRG pin goes into
a high impedance state.
GATE (Pin 7):
Gate Drive Output Pin for Internal and
External Pass Transistors. An external N-MOSFET transis-
tor can be connected in parallel with the internal transistor
to reduce the on-resistance for higher charge current. In
this case, an external blocking diode is required to prevent
damage to the battery when V
CC
is shorted to ground. A
10
μ
A current source pulls this pin up to the charge pump
potential when turned on and a 40
μ
A current source pulls
it down to ground to turn it off. If an overcurrent condition
is detected, the GATE pin is immediately pulled to ground.
A series RC network to the V
CC
pin is required to control
the slew rate at the V
CC
pin when the switch is turned on
or off. The slew rate control prevents excessive charge
from dumping out of the capacitor located in the wall
adapter into the battery when the pass transistor is turned
on. The voltage at this pin is internally clamped to 12V
above the BAT pin.
BAT (Pin 8):
Battery Sense Input Pin. This pin is clamped
to 4.7V per cell if the battery is disconnected while charg-
ing. An internal resistor divider presets the final float
voltage to 4.2V.
If the BAT pin drops below 3.8V/cell after the charging has
stopped, the timer resets and a new charge cycle begins.
LTC1730EGN-4
GND (Pins 1, 8, 9, 16):
Refer to LTC1730ES8-4.2
SENSE (Pin 2):
Refer to LTC1730ES8-4.2
V
CC
(Pin 3):
Refer to LTC1730ES8-4.2
ACPR (Pin 4):
Wall Adapter Present Output. When the
input voltage (wall adapter) is applied to the LTC1730, this
pin is pulled low by an internal N-channel MOSFET to
ground. This is an open-drain output that is capable of
driving an external LED.
FAULT (Pin 5):
Fault Condition Detection Output. This is
an open-drain output capable of driving an external LED.
The internal N-channel MOSFET pulls this pin to ground
when either one of the following conditions is detected:
1. The voltage at the NTC pin is out of the normal operation
range. This usually means the battery pack temperature
is too high or too low. Once the temperature is back to
normal, the FAULT pin will become high impedance
immediately.
2. The BAT pin potential stays below 2.45V for more than
1/4 of the programmed charge time. When this condi-
tion is detected, the FAULT pin is pulled low and latched.
CHRG (Pin 6):
Refer to LTC1730ES8-4.2
NC (Pins 7, 14):
No Internal Connection. Connecting these
pins to ground will help transfer heat from the package.
TIMER (Pin 10):
Refer to LTC1730ES8-4.2
NTC/SHDN (Pin 11):
Refer to LTC1730ES8-4.2
SEL (Pin 12):
4.1V/4.2V Battery Selection Input. Ground-
ing this pin will set the output float voltage to 4.1V per cell,
while connecting to V
CC
will set the voltage to 4.2V per cell.
GATE (Pin 13):
Refer to LTC1730ES8-4.2
BAT (Pin 15):
Refer to LTC1730ES8-4.2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1730ES8-4.2 | Lithium-Ion Battery Pulse Charger with Overcurrent Protection |
| LTC1730-4.2 | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT01; No. of Contacts:5; Connector Shell Size:14; Connecting Termination:Solder; Circular Shell Style:Cable Receptacle; Body Style:Straight |
| LTC1730EGN-4 | Lithium-Ion Battery Pulse Charger with Overcurrent Protection |
| LTC1731-4.2 | Lithium-Ion Linear Battery Charger Controller(4.2V鋰離子線性電池充電器) |
| LTC1733 | Monolithic Linear Lithium-Ion Battery Charger with Thermal Regulation |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1730EGN-4 | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730EGN-4#PBF | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730EGN-4#TR | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730EGN-4#TRPBF | 功能描述:IC BATT PULSE CHRGR LI-ION16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1730ES8-4.2 | 功能描述:IC BATT PULSE CHRGR LI-ION 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
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