- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄224115 > LTC4055EUF#PBF (LINEAR TECHNOLOGY CORP) USB Power Controller and Li-Ion Linear Charger; Package: QFN; No of Pins: 16; Temperature Range: -40°C to +125°C PDF資料下載
參數(shù)資料
| 型號： | LTC4055EUF#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | USB Power Controller and Li-Ion Linear Charger; Package: QFN; No of Pins: 16; Temperature Range: -40°C to +125°C |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封裝： | 4 X 4 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WGGC, QFN-16 |
| 文件頁數(shù)： | 23/24頁 |
| 文件大?。?/td> | 292K |
| 代理商： | LTC4055EUF#PBF |
LTC4055/LTC4055-1
8
4055fb
PIN FUNCTIONS
BAT (Pin 2): Connect to a single-cell Li-Ion battery. Used
as an output when charging the battery and as an input
when supplying power to OUT. When the OUT pin potential
drops below the BAT pin potential, an ideal diode function
connects BAT to OUT and prevents VOUT from dropping
more than 100mV below VBAT. A precision internal resistor
divider sets the nal oat potential on this pin. The internal
resistor divider is disconnected when IN1/IN2 and OUT
are in UVLO.
OUT (Pin 3): Voltage Output. Used to provide controlled
power to a USB device from either USB VBUS (IN1/IN2) or
the battery (BAT) when the USB is not present. Can also
be used as an input for battery charging when the USB
is not present and a wall adaptor is applied to this pin.
Should be bypassed with at least 10μF to GND.
IN1/IN2 (Pin 4/Pin 1): Input Supply. Connect to USB supply,
VBUS. Used as main supply while connected to USB VBUS
for power control to a USB device. Input current is limited
to either 20% or 100% of the current programmed by the
CLPROG pin as determined by the state of the HPWR pin.
Charge current (to BAT pin) supplied through the inputs is
set to the current programmed by the PROG pin but will
be limited by the input current limit if set greater than the
input current limit.
Connect IN2 to IN1 with a resistance no greater than
0.05Ω.
WALL (Pin 5): Wall Adapter Present Input. Pulling this pin
above 1V will disable charging from IN1/IN2 and disconnect
the power path from IN1/IN2 to OUT. The ACPR pin will
also be pulled low to indicate that a wall adapter has
been detected. Requires the voltage on IN1/IN2 or OUT
to be 100mV greater than VBAT and greater than VUVLO to
activate this function.
SHDN (Pin 6): Shutdown Input. Pulling this pin greater
than 1.2V will disable the entire part and place it in a low
supply current mode of operation. All power paths will be
disabled. A weak pull-down current is internally applied
to this pin to ensure it is low at power-up when the input
is not being driven externally.
SUSP (Pin 7): Suspend Mode Input. Pulling this pin above
1.2V will disable charging from IN1/IN2 and disconnect
the power path from IN1/IN2 to OUT. The supply current
will be reduced to comply with the USB specication for
Suspend mode. The BAT to OUT ideal diode function will
remain active as well as the ability to charge the battery
from OUT. Suspend mode will reset the charge timer if
VOUT is less than VBAT while in suspend mode. If VOUT is
kept greater than VBAT, such as when a wall adapter is
present, the charge timer will not be reset when the part
is put in suspend. A weak pull-down current is internally
applied to this pin to ensure it is low at power-up when
the input is not being driven externally.
HPWR (Pin 8): High Power Select. Used to control the
amount of current drawn from the USB port. A voltage
greater than 1.2V on the pin will set the current limit to
100% of the current programmed by the CLPROG pin
and 100% of the charge current programmed by the
PROG pin. A voltage less than 0.4V on the pin will set
the current limit to 20% of the current programmed by
the CLPROG pin and decrease battery charge current to
16% of the current programmed by the CLPROG pin. A
weak pull-down current is internally applied to this pin to
ensure it is low at power-up when the input is not being
driven externally.
CLPROG (Pin 9): Current Limit Program. Connecting
a resistor, RCLPROG to ground, programs the input to
output current limit. The current limit is programmed as
follows:
IA
V
R
V
R
CL
CLPROG
()
,
==
49 000
In USB applications the resistor RCLPROG should be set
to no less than 105k.
GND (Pin 10): Ground.
PROG (Pin 11): Charge Current Program. Connecting a
resistor, RPROG, to ground programs the battery charge
current. The battery charge current is programmed as
follows:
IA
V
R
V
R
CHG
PROG
()
,
==
48 500
相關PDF資料 |
PDF描述 |
|---|---|
| LTF5022T-4R7N2R0-LC | 1 ELEMENT, 4.7 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
| LTF5022T-3R3N2R5-LC | 1 ELEMENT, 3.3 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
| LTF5022T-2R2N3R2-LC | 1 ELEMENT, 2.2 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
| LTF5022T-1R2N4R2-LC | 1 ELEMENT, 1.2 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
| LTFD101 | SPECIAL SWITCH-DISCONNECT SWITCH, MOMENTARY, 100A, 80VDC, PANEL MOUNT |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4056 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:150mA Standalone Linear Li-Ion Battery Charger in ThinSOT |
| LTC4056-4.2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Linear Li-Ion Charger with Termination in ThinSOT |
| LTC4056ETS8-4.2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Linear Li-Ion Charger with Termination in ThinSOT |
| LTC4056ETS8-4.2#TR | 功能描述:IC CHARGR BATTERY L-ION TSOT23-8 RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:61 系列:- 功能:電源管理 電池化學: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 供應商設備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC4056ETS8-4.2#TRM | 功能描述:IC CHARGR BATTERY L-ION TSOT23-8 RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:61 系列:- 功能:電源管理 電池化學: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 供應商設備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
發(fā)布緊急采購，3分鐘左右您將得到回復。