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參數(shù)資料
| 型號： | LTC4006EGN-6 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 4A, High Efficiency, Standalone Li-Ion Battery Charger |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 241K |
| 代理商： | LTC4006EGN-6 |
9
LTC4007
4007i
gate of the input FET is driven to a voltage sufficient to keep
a low forward voltage drop from drain to source. If the
voltage between DCIN and CLN drops to less than 25mV,
the input FET is turned off slowly. If the voltage between
DCIN and CLN is ever less than –25mV, then the input FET
is turned off in less than 10
μ
s to prevent significant
reverse current from flowing in the input FET. In this
condition, the ACP pin is driven low and the charger is
disabled.
Battery Charger Controller
The LTC4007 charger controller uses a constant off-time,
current mode step-down architecture. During normal op-
eration, the top MOSFET is turned on each cycle when the
oscillator sets the SR latch and turned off when the main
current comparator I
CMP
resets the SR latch. While the top
MOSFET is off, the bottom MOSFET is turned on until
either the inductor current trips the current comparator
I
REV
or the beginning of the next cycle. The oscillator uses
the equation:
V
V
V
f
DCIN
OSC
to set the bottom MOSFET on time. The result is a nearly
constant switching frequency over a wide input/output
voltage range. This activity is diagrammed in Figure 1.
t
OFF
DCIN
BAT
=
–
TGATE
OFF
ON
ON
BGATE
INDUCTOR
CURRENT
t
OFF
TRIP POINT SET BY ITH VOLTAGE
OFF
4006 F01
Figure 1
OPERATIOU
Table 1. Truth Table For Indicator States
TIMER
STATE
Reset
Running
Running
Running
Paused
MODE
Shut down by low adapter voltage
Charging a low bat
Normal charging
Input current limited charging
Charger paused due to thermistor out of range
DCIN
<BAT
>BAT
>BAT
>BAT
>BAT
SHDN
LOW
LOW
LOW
LOW
LOW
ACP**
LOW
HIGH
HIGH
HIGH
HIGH
LOBAT
LOW
LOW
HIGH
HIGH
X
FLAG** FAULT**
HIGH
HIGH*
HIGH
HIGH*
X
I
CL
LOW
HIGH*
HIGH*
LOW
HIGH
CHG**
HIGH
LOW
LOW
LOW
LOW
HIGH
HIGH*
HIGH*
HIGH*
LOW
(from
NTC)
HIGH
LOW
Shut down by SHDN pin
Terminated by low-battery fault (Note 1)
X
HIGH
LOW
X
X
HIGH
HIGH*
LOW
LOW
Reset
>T/4
HIGH
HIGH
(Faulted)
HIGH
(Waiting
for Restart)
>BAT
HIGH
LOW
Timer is reset when FLAG goes low, then
terminates after 1/4 T
>BAT
LOW
HIGH
HIGH
LOW
HIGH
LOW
>T/4
after
FLAG =
LOW
>T
Terminated by expired timer
>BAT
LOW
HIGH
HIGH
HIGH
HIGH
LOW
HIGH
(Waiting
for Restart
Forced LOW
HIGH*
Timer defeated
Shut down by undervoltage lockout
X
X
X
X
X
X
X
X
>BAT
+ <UVL
LOW
HIGH
HIGH
HIGH
HIGH*
LOW
Reset
*Most probable condition X = Don’t care, ** Open-drain output HIGH = OPEN with pull-up
Note 1:
If a depleted battery is inserted while the charger is in this state, the
charger must be reset to initiate charging.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4006EGN-6#PBF | 功能描述:IC CHARGER BATTERY 4A 16-SSOP 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 |
| LTC4006EGN-6#TR | 功能描述:IC BATT CHGR CC/CV LI-ION 16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
| LTC4006EGN-6#TRPBF | 功能描述:IC CHARGER BATTERY 4A 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
| LTC4007 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:4A, High Efficiency, Standalone Li Battery Charger |
| LTC4007_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:4A, High Efficiency, Standalone Li-Ion Battery Charger |
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