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LX2202 데이터시트 PDF




Microsemi Corporation에서 제조한 전자 부품 LX2202은 전자 산업 및 응용 분야에서
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부품번호 LX2202 기능
기능 2A Li-Ion Linear Charger and Power Control
제조업체 Microsemi Corporation
로고 Microsemi Corporation 로고


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LX2202 데이터시트, 핀배열, 회로
LX2202
TM ® 2A Li-Ion Linear Charger and Power Control
PRODUCTION DATA SHEET
DESCRIPTION
The LX2202 Linear Battery Charger is a
multi-state (2 stage) Li-Ion battery charger
(Constant current / Constant voltage) that is
designed to minimize battery charge time
(even from current limited sources such as
USB) and provide a simplified interface to
control battery discharge.
LX2202 features up to 2A charging
current from an AC adapter and an isolated
battery topology to minimize charge time
from current limited sources such as USB.
A thermal control loop maintains a safe
operating temperature at all times.
The LX2202 provides a seamless
complete battery interface. When the input
power source is removed, the LX2202
provides the discharge path for the battery
with extremely low discharge impedance.
This eliminates the need for external
discharge switch and voltage supervisors.
In USB mode, the LX2202 provides
three levels of current limit: 100mA,
500mA, and off.
The LX2202 (compared to the LX2201)
has improved charge and discharge mode
detection circuitry. A UVLO feature prevents
battery charging when VDD is less than 3.6V.
The LX2202 uses three resistors to
program the constant charge current level, for
setting the termination charge current, and for
varying the USB charge current limits.
LX2202 support two types of Li-Ion
battery chemistry; 4.1V and 4.2V through
logical input (VM pin). The LX2202
provides a charging status indicator.
The LX2202 features a pre-charge
conditioning mode for batteries that have
been deeply discharged and also has a top off
charge mode for batteries that are left on the
charger for extended periods.
The LX2202 is available in a high power
4mm x 4mm, 20-pin MLP, surface mount
package.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
ƒ Up to 2A Charge Current
ƒ Internal Pass Element Can
Function as a Reverse Direction
Load Switch
ƒ USB Compliant Charging States
using optional USB input
ƒ Isolated Battery Topology
ƒ Low RdsON in Discharge Mode
ƒ Full Capacity Charging
ƒ True Charge Indicator
ƒ Wall Supply Regulator Tolerance
5V + 10%
ƒ Topping Charge with Voltage
Monitoring Mode
ƒ Improved charge/discharge mode
detection circuitry
ƒ Small, High Power 20-lead MLP
package
ƒ Selectable Li-Ion Battery for 4.1V
or 4.2V Applications
APPLICATIONS
ƒ Batteries up to 4AH Ratings (C/2)
ƒ Cell Phones
ƒ PDAs
ƒ Charging Cradles
ƒ Digital Cameras
ƒ Low Cost Single Li-Ion Cell Chargers
Power On/Off
Main Internal
Power Bus
Wall Adapter
B220
10µF
PRODUCT HIGHLIGHT
VDD
NU
VDD
BAT
VDD LX2202 BAT
VDD
BAT
USB
CMP
2.55k
105k 72.3k
0.1µF
To VDD
10µF
Charge
Indicator
2.49k
VID0
0
0
1
1
VID1
0
1
0
1
State Select Truth Table
VDD > VBAT
Switch open – charging
VBAT > VDD
Switch open – discharge
disabled.
disabled.
Charging – USB high level if Switch open – discharge
using USB.
disabled.
Charging – USB low level if
using USB.
Charging – USB high level if
using USB.
Battery Discharging. MOSFET
fully enhanced with current
flow VBAT to VDD.
Battery Discharging. MOSFET
fully enhanced with current
flow VBAT to VDD.
PACKAGE ORDER INFO
TA(°C)
Plastic MLP
LQ 4x4mm 20-Pin
RoHS Compliant / Pb-free
-40 to 125
LX2202CLQ
Note: Available in Tape & Reel.
Append the letters “TR” to the part number.
(i.e. LX2202CLQ-TR)
Copyright © 2004
Rev. 1.0, 2005-03-18
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1




LX2202 pdf, 반도체, 판매, 대치품
TM
VID0
VDD
USB
LX2202
® 2A Li-Ion Linear Charger and Power Control
PRODUCTION DATA SHEET
SIMPLIFIED BLOCK DIAGRAM
UVLO
CHARGE/
DISCHARGE
CONTROL
0.1
PSW
STAT
BAT
CUS
VID1
VM
CMP
CCP
GND
USB
LIMIT
CONTROL
CONSTANT
VOLTAGE
CONTROL
TEMPERATURE
CONTROL
CONSTANT
CURRENT
CONTROL
CHARGE
TERMINATION
CONTROL
CTP
Figure 1 – Simplified Block Diagram
Copyright © 2004
Rev. 1.0, 2005-03-18
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4

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LX2202 전자부품, 판매, 대치품
LX2202
TM ® 2A Li-Ion Linear Charger and Power Control
PRODUCTION DATA SHEET
CHARGING CURRENT ACCURACY OVER T E M P
101.5
101
100.5
100
99.5
99
98.5
98
-55
-35 -15 5 25 45 65
Ambient Temperature (°C)
85
TERMINATION CURRENT OVER TEMP
54
52
50
48
46
44
42
40
-55
-35 -15
5
25 45 65
Am bient Tem perature (°C)
85
CONSTANT CURRENT PROGRAMMING
2500
2000
1500
1000
500
0
0.00
5.00
10.00 15.00 20.00 25.00
CCP Current (uA)
30.00
35.00
TERMINATION CURRENT VS CTP
CONDUCTANCE
600
500
400
300
200
100
0
0.0
20.0 40.0 60.0 80.0 100.0
CTP Conductance (in micromhos)
120.0
CHARGING CURRENT OVER VDD
VOLTAGE
1200
1000
800
600
400
200
VDD = 4.3V
VDD = 4.5V
VDD = 5.0V
VDD = 5.5V
0
3 3.5 4 4.5
Battery Voltage
DISCHARGE MODE DYNAMIC RESPONSE
Copyright © 2004
Rev. 1.0, 2005-03-18
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 7

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