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參數(shù)資料
| 型號(hào)： | LX2201 |
| 廠商： | Microsemi Corporation |
| 英文描述： | USB Li-Ion Battery Charger |
| 中文描述： | 的USB鋰離子電池充電器 |
| 文件頁(yè)數(shù)： | 2/11頁(yè) |
| 文件大小： | 172K |
| 代理商： | LX2201 |
LX2201
P
RODUCTION
D
ATA
S
HEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright
2000
Rev. 1.2b, 2005-04-13
W
M
.
C
USB Li-Ion Battery Charger
TM
A B S O L U T E M A X I M U M R A T I N G S
Supply Voltage (VIN)..........................................................................-0.3V to 7V
Analog Input Signals (VIDx, VM, SNS).............................................-0.3V to 7V
Battery Charging Current (I
BAT
).........................................................................2A
Discharge Current (I
VDD
)....................................................................................3A
Operating Junction Temperature.................................................................. 150
°
C
Storage Temperature Range...........................................................-65
°
C to 150
°
C
Peak Package Solder Reflow Temp. (40 second max. exposure)...260°C (+0, -5)
V
IN
Maximum DC Current..........................................................................500mA
V
IN
Maximum Surge Current.............................................................................2A
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal
.
T H E R M A L D A T A
LQ
Plastic Micro Lead Frame Quad Package 20-Pin
THERMAL RESISTANCE
-
JUNCTION TO
A
MBIENT
,
θ
JA
40
°
C/W
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x
θ
JA
).
The
θ
JA
numbers are guidelines for the thermal performance of the device/pc-board system. All of the
above assume no ambient airflow.
P A C K A G E P I N O U T
V
VDD
VDD
VDD
VDD
VIN
CMP
BAT
BAT
BAT
BAT
N
P
V
V
C
S
C
C
G
1
6
11
16
2
3
4
5
7
8
9
10
12
13
14
15
17
18
19
20
Pad Is GND
LQ
P
ACKAGE
(Top View)
N.C. – No Internal Connection
RoHS / Pb-free 100% Matte Tin Lead Finish
F U N C T I O N A L P I N D E S C R I P T I O N
Name
Description
BAT
Charging Output - This pin is wired to the positive terminal of the battery. (The negative battery terminal is wired to GND.)
Charge Current Programming Pin - A resistor (RCP) is connected between this pin and GND. The constant current is
determined by the following relationship:
BAT(MAX)
RCP
CCP
65000
I
=
CMP
Compensation Pin – Connect a 0.1uF compensation capacitor from this pin to VDD.
Charge Termination Programming Pin – A resistor (RTP) is connected between this pin and GND. The termination charge
current is determined by the following relationship:
BAT(MIN)
RTP
CTP
7500
I
=
CUS
Maximum VIN Current Programming Pin – A resistor (RUS) is connected between this pin and GND. The Hi Level charge
current is determined by the following relationship:
I
=1211
GND
NC
Common Ground
Not Connected. This pin is connected internally and should be left floating.
PMOS Switch driver – This output is designed to drive the gate of an external PMOS power switch. The driver is pulled low
(PMOS on state) when VDD > V
BAT
.
Common Power Node – Connects to system power bus.
State Select Input – Applying a two bit TTL compatible signal sets the desired state of the charger corresponding to the Truth
Table.
Voltage Input – Current limited USB input. Apply a USB compliant power input.
Voltage Mode Select - Selects the constant voltage. VM = Low to select 4.2V charge level. VM = High to select 4.1V charge
level.
Status - This pin is a logic high level when the battery is being charged. A low signal indicates either under voltage lockout,
charge completed, or V
BAT
> VDD, or VID0 = VID1 = 0.
PSW
VDD
VIDx
VIN
VM
STAT
P
A
C
K
A
G
E
D
A
T
A
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