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參數(shù)資料
| 型號： | LTC4001-1EUF#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封裝： | 4 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-220WGGC, QFN-16 |
| 文件頁數(shù)： | 16/20頁 |
| 文件大?。?/td> | 227K |
| 代理商： | LTC4001-1EUF#TRPBF |
5
LTC4001-1
40011f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Soft-Start (PWM Mode)
IDET Threshold vs RIDET for
RPROG = 549
UU
U
PI FU CTIO S
BAT (Pin 1): Battery Charger Output Terminal. Connect a
10
F ceramic chip capacitor between BAT and PGND to
keep the ripple voltage small.
SENSE (Pin 2): Internal Sense Resistor. Connect to exter-
nal inductor.
PGND (Pin 3): Power Ground.
GNDSENS (Pin 4): Ground Sense. Connect this pin to the
negative battery terminal. GNDSENS provides a Kelvin
connection for PGND and must be connected to PGND
schematically.
SW (Pin 5): Switch Node Connection. This pin connects to
the drains of the internal main and synchronous power
MOSFET switches. Connect to external inductor.
EN (Pin 6): Enable Input Pin. Pulling the EN pin high places
the LTC4001-1 into a low power state where the BAT drain
current drops to less than 3
A and the supply current is
reduced to less than 50
A. For normal operation, pull the
pin low.
CHRG (Pin 7): Open-Drain Charge Status Output. When
the battery is being charged, CHRG is pulled low by an
internal N-channel MOSFET. When the charge current
drops below the IDET threshold (set by the RIDET program-
ming resistor) for more than 5milliseconds, the N-channel
MOSFET turns off and a 30
A current source is connected
from CHRG to ground. (This signal is latched and is reset
by initiating a new charge cycle.) When the timer runs out
or the input supply is removed, the current source will be
disconnected and the CHRG pin is forced to a high imped-
ance state. A temperature fault causes this pin to blink.
PVIN (Pin 8): Positive Supply Voltage Input. This pin
connects to the power devices inside the chip. VIN ranges
from 4V to 5.5V for normal operation. Operation down to
the undervoltage lockout threshold is allowed with current
limited wall adapters. Decouple with a 10
F or larger
surface mounted ceramic capacitor.
VINSENSE (Pin 9): Positive Supply Sense Input. This pin
connects to the inputs of all input comparators (UVL, VIN
to VBAT). It also supplies power to the controller portion of
this chip. When the BATSENS pin rises to within 30mV of
VINSENSE, the LTC4001-1 enters sleep mode, dropping IIN
to 50
A. Tie this pin directly to the terminal of the PVIN
decoupling capacitor.
CHRG Pin Temperature Fault
Behavior (Detail)
0
INPUT
CURRENT (IIN)
0.5A/DIV
INDUCTOR
CURRENT (IL)
0.5A/DIV
SOFT-START
VOLTAGE (VSS)
1V/DIV
EN PIN (VEN)
5V/DIV
0
2ms/DIV
VBAT = 3.5V
VIN = 5V
40011 G09
RIDET ()
300
IDET
(mA) 200
250
300
1100
40011 G10
150
100
0
500
700
900
400
1200
600
800
1000
50
400
350
CHRG
1V/DIV
TIME (20
s/DIV)
40011 G11
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4001EUF | 制造商:Linear Technology 功能描述:Battery Charger Li-Ion/Li-Pol 2000mA 4.2V 16-Pin QFN EP |
| LTC4001EUF#PBF | 功能描述:IC CHARGER LI-ION BUCK 16-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 功能:燃料，電量檢測計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC4001EUF#TRPBF | 功能描述:IC CHARGER LI-ION BUCK 16-QFN 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 |
| LTC4001EUF-1#PBF | 功能描述:IC CHARGER LI-ION BUCK 16-QFN 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 |
| LTC4001EUF-1#PBF | 制造商:Linear Technology 功能描述:IC BATT CHARGER SW MODE 16QFN |
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