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WS4518E 데이터시트 PDF




WillSEMI에서 제조한 전자 부품 WS4518E은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 WS4518E 기능
기능 Single Li-ion Battery Charger
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WS4518E 데이터시트, 핀배열, 회로
WS4518E
300mA, Single Li-ion Battery Charger
WS4518E
www.sh-willsemi.com
Descriptions
The WS4518E is a complete constant-current /
constant voltage linear charger for single cell
Lithium-Ion batteries. No external sense resistor is
needed, and no blocking diode is required due to the
internal MOSFET architecture. Thermal feedback
regulates the charge current to limit the die
temperature during high power operation or high
ambient temperature. The charge voltage is fixed at
4.2V, and the charge current can be programmed
externally with a single resistor.
The WS4518E automatically terminates the charge
cycle when the charge current drops to 3/10 the
programmed value after the final float voltage is
reached.
When the input supply (wall adapter or USB supply) is
removed, the WS4518E automatically enters a low
current state, dropping the battery drain current to less
than 0.5uA. The WS4518E can be put into shutdown
mode, reducing supply current to 40uA (Typ.).
The WS4518E is available in a small package with
SOT-23-5L. Standard product is Pb-Free.
Features
Programmable Charge Current Up to 300mA
Over-Temperature Protection
Under Voltage Lockout Protection
Automatic Recharge Threshold 4.05V(Typ.)
Charge Status Output Pin
2.9V Trickle Charge Threshold
Soft-Start Limits Inrush Current
SOT-23-5L
CHGb 1
GND 2
BAT 3
5 PROG
4 VCC
Pin configuration (Top view)
54
4518
EAYW
1 23
4518 = Device Code
EA = Package Code
Y = Year
W = Week
Marking
Order information
Applications
Wireless phone
MP3/MP4 Player
Bluetooth device
Device
Package
Shipping
WS4518E-5/TR SOT-23-5L 3000/Reel&Tape
Will Semiconductor Ltd.
1 Apr, 2016 - Rev. 1.3




WS4518E pdf, 반도체, 판매, 대치품
Electronics Characteristics (VCC=5V, Ta=25oC, unless otherwise noted)
Symbol
ISPLYCHRG
IBATCHRG
VPROGCHRG
ISPLYSTBY
IBATSTBY
ISPLYASD
IBATASD
ISPLYUVLO
IBATUVLO
ISPLYSHUT
IBATSHUT
IBATMSD
IBATSLEEP
VFLOAT
ITRIKL
VTRIKL
VTRIKL, HYS
VUVLO
VUVLO, HYS
VMSD
Parameter
Charge Mode Supply Current
Charge Mode Battery Current
PROG Pin Voltage
Standby Mode Supply Current
Standby Mode Battery Current
Shutdown Mode Supply Current
Shutdown Mode BAT Pin Current
UVLO Mode Supply Current
UVLO Mode BAT Pin Current
Shutdown Mode Supply Current
Shutdown Mode BAT Pin Current
Manual Shutdown BAT Pin Current
Sleep Mode BAT Pin Current
Float Voltage
Trickle Charge Current
Trickle Charge Voltage Threshold
Trickle Charge Voltage Hysteresis
UVLO Threshold
UVLO Hysteresis
Manual Shutdown Threshold Voltage
Condition
RPROG=10kΩ
RPROG=20kΩ
RPROG=10kΩ
RPROG=20kΩ
RPROG=33.3kΩ
RPROG=10kΩ
RPROG=20kΩ
Charge Terminated
Charge Terminated
VCC<VBAT
VCC<VBAT
VCC<VUV
VCC<VUV
RPROG not Connected
RPROG not Connected
VPROG=1.3V
VCC=0V
RPROG=10kΩ
RPROG=10kΩ
RPROG=10kΩ
From VCC Low to High
PROG Pin Rising
PROG Pin Falling
Min.
90
44
25
0.93
0.93
0
20
20
20
4.158
19
2.8
3.6
VASD
ΔVRECHRG
VCHGb
TLIM
Vcc-VBAT Lockout Threshold Voltage
Auto Recharge Battery Voltage
CHGb Pin Output Low Voltage
Junction Temperature In Constant
Temperature Mode
VCC from Low to High
VCC from High to Low
ICHGb=5mA
5
100
RON
TSS
TRECHRG
TTERM
IPROG
Power FET ON Resistance
Soft-Start Time
Recharge Comparator Filter Time
Termination Comparator Filter Time
PROG Pin Pull-up Current
RPROG=2kΩ
0.7
WS4518E
Typ.
220
170
100
49
28.5
1.00
1.00
130
-2.5
40
±0.05
40
±0.05
40
±0.05
±0.05
±0.05
4.2
29
2.9
100
3.8
250
1.2
1.0
120
50
150
0.3
Max.
2000
2000
110
54
32
1.07
1.07
500
-6
90
±1
90
±1
70
±1
±1
±1
4.242
39
3.0
4.0
1.3
200
0.6
165
200
100
2
1
1.1 1.5
Unit
uA
uA
mA
mA
mA
V
V
uA
uA
uA
uA
uA
uA
uA
uA
uA
uA
V
mA
V
mV
V
mV
V
V
mV
mV
mV
V
oC
mΩ
us
ms
ms
uA
Will Semiconductor Ltd.
4 Apr, 2016 - Rev. 1.3

4페이지










WS4518E 전자부품, 판매, 대치품
WS4518E
3.00
2.95
2.90
2.85
2.80
2.75
2.70
2.65
VCC = 5.0V
RPROG=10KΩ
RPROG=20KΩ
RPROG=50KΩ
2.60
-50 -25 0 25 50 75 100
Temperature ( OC )
32
28
VCC=5V
24 VBAT=2.5V
20
RPROG=10KΩ
RPROG=20KΩ
16 RPROG=50KΩ
12
8
4
0
-50 -25
0
25 50 75 100
Temperature ( OC )
Trickle Charge Threshold vs Ambient Temperature Trickle Charge Current vs Ambient Temperature
4.3
4.2
4.1
4.0
3.9
3.8
VCC = 5.0 V
3.7 RPROG = 10KΩ
3.6
-50
-25
0
25 50 75 100
Temperature ( OC )
Recharge Voltage Threshold vs Ambient Temperature
120
100
VCC=5.0V
VBAT=4.0V
80 RPROG=10KΩ
RPROG=20KΩ
60 RPROG=50KΩ
40
20
0
-50 -25
0 25 50 75
Temperature ( OC )
100 125
Charge Current vs Ambient Temperature
Will Semiconductor Ltd.
7 Apr, 2016 - Rev. 1.3

7페이지


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