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PDF WS4508E Data sheet ( Hoja de datos )
| Número de pieza | WS4508E | |
| Descripción | Single Li-ion Battery Charger | |
| Fabricantes | WillSEMI | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de WS4508E (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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WS4508E
WS4508E
600mA, Single Li-ion Battery Charger
Http//:www.sh-willsemi.com
Descriptions
The WS4508E 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.
SOT-23-5L
CHGb 1
5 PROG
The WS4508E automatically terminates the charge
cycle when the charge current drops to 1/10 the
programmed value after the final float voltage is
reached.
When the input supply (wall adapter or USB supply) is
removed, the WS4508E automatically enters a low
current state, dropping the battery drain current to less
than 0.5uA. The WS4508E can be put into shutdown
mode, reducing supply current to 45uA (Typ.).
The WS4508E is available in a small package with
SOT-23-5L. Standard product is Pb-Free.
GND 2
BAT 3
4 VCC
Pin configuration (Top view)
54
4508
YYWW
Features
Programmable Charge Current Up to 600mA
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
Applications
Wireless phone
MP3/MP4 Player
Bluetooth device
1 23
4508
YY
WW
= Device Code
= Year
= Week
Order information
Device
Package
Shipping
WS4508E-5/TR SOT-23-5L 3000/Reel&Tape
Will Semiconductor Ltd.
1 Jun, 2014 - Rev. 1.2
1 page  
Typical Characteristics (Ta=25oC, unless otherwise noted)
WS4508E
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
VBAT=4.0V
RPROG=2K
0.90
4.5 5.0 5.5 6.0 6.5
VCC(V)
PROG Pin Voltage vs Supply Voltage
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
VCC =5V
VBAT=4V
RPROG=2K
0.90
-25
0
25 50 75 100
Temperature(oC)
PROG Pin Voltage vs Ambient Temperature
0.6
0.5
0.4
0.3
0.2
VCC=5.0V
0.1 RPROG=2K
0.0
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
VPROG(V)
Charge Current vs PROG Pin Voltage
50
45 VBAT=2.5V
40 RPROG=2K
35
30
25
20
15
10 RPROG=10K
5
0
4.5 5.0 5.5 6.0 6.5
VCC(V)
Trickle Charge Current vs Supply Voltage
700
650
600
550
500
450
400
350
VBAT=4.0V
RPROG=2K
300
4.5 5.0 5.5 6.0 6.5
VCC(V)
Charge Current vs Supply Voltage
2.95
2.94
2.93
2.92
2.91
2.90
2.89
2.88
2.87
2.86
RPROG=2K
2.85
4.5
5.0 5.5 6.0
VCC(V)
6.5
Trickle Voltage vs Supply Voltage
Will Semiconductor Ltd.
5 Jun, 2014 - Rev. 1.2
5 Page 
Package outline dimensions
SOT-23-5L
WS4508E
Symbol
A
A1
A2
b
c
D
E
E1
e
e1
L
θ
Will Semiconductor Ltd.
Dimensions In Millimeters
Min.
Max.
1.050
1.250
0.000
0.100
1.050
1.150
0.300
0.500
0.100
0.200
2.820
3.020
1.500
1.700
2.650
2.950
0.950(Basic)
1.800
2.000
0.300
0o
0.600
8o
11 Jun, 2014 - Rev. 1.2
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet WS4508E.PDF ] | |
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