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參數(shù)資料
| 型號： | LM3621M |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Single Cell Lithium-Ion Battery Charger Controller |
| 中文描述： | BATTERY CHARGE CONTROLLER, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 334K |
| 代理商： | LM3621M |
Electrical Characteristics
(Continued)
V
= 4.2V unless otherwise specified. Specifications with standard type face are for T
A
= 25C, and those with
boldface type
apply over
full operating temperature range
.
Symbol
Parameter
Conditions
I
LKG
-0
Battery Load Current (Note 8)
V
DD
= 0V
I
LKG
-MM
Battery Load Current (Note 9)
Monitor Mode
V
BSD
Maximum Allowed Battery Self-
Discharge(Note 10)
V
SET
= LO
G
CSR
Fast Charge Current Regulation
Adjustment Transfer Ratio (Notes
11, 12)
I
LED
LED1 & LED2 Driver Sink Current
V
LED1
= V
LED2
= 1.5V
V
SUV
Start Up Voltage (Note 13)
V
UVR
Under Voltage Reset (Note 14)
V
PFD
-MAX
Maximum PFD Output Drive
no DC load on PFD
V
PFD
-MIN
Minimum PFD Output Drive
no DC load on PFD
V
IL
Logic Input Low (Note 15)
V
IH
Logic Input High (Note 15)
I
DIG
Digital Input Leakage Current
(Note 15)
Note 1:
Absolute Maximum Ratings indicates limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is in-
tended to be functional, but device parameter specifications may not be guaranteed under these conditions. For guaranteed specifications and test conditions, see
the Electrical Characteristics.
Note 2:
ESD rating is based on the human body model, 100 pF discharged through 1.5 k
.
Note 3:
LM3621 requires a minimum V
DD
of 3.4V to start-up. After start-up, the operating range is 3.0V to 5.5V.
Note 4:
V
OUT
is measured between V
BAT
+ and CSR.
Note 5:
V
CSR
is measured between CSR and V
SS
(across the current sense resistor).
Note 6:
V
BAT
-Det is measured between V
BAT
+ and V
BAT
.
Note 7:
V
CSR
-Det is measured between CSR and V
SS
(across the current sense resistor).
Note 8:
This is the current drawn from the battery by the LM3621 when V
DD
= 0V.
Note 9:
This is the current drawn from the battery by the LM3621 when the charger is in Monitor Mode.
Note 10:
This is the maximum battery voltage droop that is allowed before the charger initiates a fast charge mode to refresh the battery to its full charge capacity.
Note 11:
The current regulation and detection levels can be set by applying a dc voltage adjusting between 0.1V to 1V to the I
pin without changing the value
of the current sense resistor. To ensure proper operation, if the default current regulation and detection values are desired, then a capacitor of at least 100 pF should
be connected from I
SET
to V
SS
(GND).
Note 12:
Transfer ratio of V
CSR
/V
ISET
to adjust the fast charge current regulation level. See application section.
Note 13:
Minimum V
DD
supply voltage required at start-up.
Note 14:
The LM3621 goes to a shutdown or reset state during “brown out” (i.e., when V
DD
<
V
UVR
)
Note 15:
Digital inputs are Enable, Boost, Chgint and V
SET
. To ensure proper operation, never allow any unused input pin to be left open.
Note 16:
No external voltage applied to I
set
pin; a 100 pF capacitor is connected across I
set
and V
SS
.
Min
Typ
1
1
110
260
Max
10
10
150
300
Units
μA
μA
mV
mV
V
SET
= HI
70
220
V
ISET
= 0.5V
0.90
0.93
0.96
V/V
20
mA
V
V
V
V
V
V
μA
3.4
2.2
V
DD
0.2
V
SS
+0.1
0.5
V
DD
0.5
1
1
Definition of Terms
V
OUT
:
Voltage measured between V
BAT
+ and CSR.
V
:
Charging current sense voltage measured between
CSR and V
SS
(Gnd).
V
BATTERY
:
Battery terminal voltage measured between
V
BAT
BAT
.
ESR:
The equivalent series resistance of a battery. The ESR
is the purely resistive component of a battery’s impedance.
Its value is usually determined by the battery construction.
RFV:
The RFV (resistance free voltage, often called the float
voltage) is the open circuit terminal voltage of a battery
which is free from the ESR voltage drop error.
VI
:
External voltage applied to I
pin, measured be-
tween I
SET
and V
SS
, to override the default value of V
CSR
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3621M/NOPB | 功能描述:IC CTRLR LI-ION BAT CHRG 16-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| LM3621M-3.0 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Single Cell Lithium-Ion Battery Charger Controller |
| LM3621MX | 功能描述:IC CTRLR LI-ION BAT CHRG 16-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| LM3621MX/NOPB | 制造商:Texas Instruments 功能描述:Charge Controller Li-Ion 20mA 4.1V/4.2V 16-Pin SOIC N T/R |
| LM3622 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Lithium-Ion Battery Charger Controller |
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