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參數(shù)資料
| 型號(hào)： | LTC4052EMS8E-4.2#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Lithium-Ion Battery Pulse Charger with Overcurrent Protection; Package: MSOP; No of Pins: 8; Temperature Range: -40°C to +125°C |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大?。?/td> | 165K |
| 代理商： | LTC4052EMS8E-4.2#PBF |
LTC4052-4.2
4
405242f
PI FU CTIO S
UU
U
SENSE (Pin 1): Overcurrent Sense Input. A sense resistor
(RSENSE) should be connected from VIN to the SENSE pin
to program the current limit level. When overcurrent limit
is tripped, the pass transistor immediately turns off and
turns back on after a 640ms time-out period (CTIMER =
0.1
F). The on-off cycle will continue as long as the
overcurrent condition persists or until the timer runs out.
If overcurrent protection is not needed, short SENSE to
VIN.
ACPR (Pin 2): AC Wall Adapter Present Open-Drain Out-
put. When the input voltage (wall adapter) is applied to the
LTC4052, this pin is pulled to ground by an internal
N-channel MOSFET capable of driving an LED.
VIN (Pin 3): Positive Input Supply Voltage (4.5V ≤ VIN ≤
10V). Bypass this pin with a 1
F capacitor in series with a
4.7
resistor.
GND (Pin 4): Electrical Ground Connection and provides
a thermal path from the IC to the PC board copper. The
exposed backside of the package is also ground and must
be soldered to the PC board for maximum power dissipa-
tion.
TIMER (Pin 5): Timer Set Pin. The timer period is pro-
grammed by a capacitor (CTIMER) to ground. The timer
period is: tTIMER = (CTIMER 3Hr)/(0.1F). The minimum
ON time, minimum OFF time and the overcurrent time-out
period all scale with tTIMER.
CHRG (Pin 6): Charge Status Open-Drain Output. When a
depleted battery is being charged, the CHRG pin is pulled
to ground by an internal N-channel MOSFET capable of
driving an LED. Once the duty cycle at the GATE pin drops
below 10%, the N-MOSFET turns off and a weak 40
A
current source to ground turns on to indicate a near end-
of-charge C/10 condition. When a time-out occurs or the
input supply is removed, the CHRG pin becomes high
impedance.
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 on VIN is required to
prevent damage to the battery if VIN is shorted to ground.
A 10
Acurrentsourcepullsthispinuptothechargepump
voltage when turned on and a 40
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.
The voltage at this pin is internally clamped to 12V above
the GND pin.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TEMPERATURE (
°C)
–50
V
IMAX
(mV)
105.8
105.6
105.4
105.2
105.0
104.8
104.6
25
75
4053 G07
–25
0
50
100
125
TEMPERATURE (
°C)
–50
R
DS(ON)
(m
)
100
4053 G08
050
650
600
550
500
450
400
350
300
250
–25
25
75
125
VBAT = 4V
VBAT = 2.6V
Overcurrent Sense Voltage
Switch On-Resistance vs
Temperature
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC4052EMS8E-4.2#TRPBF | Lithium-Ion Battery Pulse Charger with Overcurrent Protection; Package: MSOP; No of Pins: 8; Temperature Range: -40°C to +125°C |
| LTC4053EDD-4.2#PBF | USB Compatible Lithium-Ion Battery Charger with Thermal Regulation; Package: DFN; No of Pins: 10; Temperature Range: -40°C to +125°C |
| LTC4053EMSE-4.2#PBF | USB Compatible Lithium-Ion Battery Charger with Thermal Regulation; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +125°C |
| LTC4053EMSE-4.2#TRPBF | USB Compatible Lithium-Ion Battery Charger with Thermal Regulation; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +125°C |
| LTC4054ES5-4.2#TRMPBF | Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT; Package: SOT; No of Pins: 5; Temperature Range: -40°C to +125°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4053 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:150mA Standalone Linear Li-Ion Battery Charger in ThinSOT |
| LTC4053-4.2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:USB Compatible Lithium-Ion Battery Charger with Thermal Regulation |
| LTC4053EDD-4.2 | 制造商:Linear Technology 功能描述:Battery Charger Li-Ion 500mA 4.2V 10-Pin DFN EP |
| LTC4053EDD-4.2#PBF | 功能描述:IC CHARGER BATTERY USB 10-DFN 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 |
| LTC4053EDD-4.2#TRPBF | 功能描述:IC CHARGER BATTERY USB 10-DFN 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 |
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