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PDF WD3120 Data sheet ( Hoja de datos )
| Número de pieza | WD3120 | |
| Descripción | Boost Converter | |
| Fabricantes | WillSEMI | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de WD3120 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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WD3120
1A output current, fixed 5V Output voltage,
Boost Converter with 2.75A Main-Switch
Descriptions
The WD3120 is a high efficiency, peak current
control mode DC-DC boost converter. It supports up to
1A output current with an integrated low RDS(ON)
(130m) N-channel MOSFET and cycle by cycle
current limit protection. The device provides a USB 5V
compliant power output from a single Li-ion battery.
The boost converter runs in Pulse-Width
Modulation (PWM) mode, at 1MHz fixed switching
frequency to reduce output ripple, improve conversion
efficiency. It allows for the use of small external
components. At light load currents the converter enters
Skipping Mode to maintain a high efficiency over a
wide load current range. The build-in soft start circuitry
minimizes the inrush current at start-up. Fixed 5V
output and internal compensation network require only
boost inductor, schottky diode, and input and output
capacitors for WD3120, save PCB area.
The WD3120 is available in SOT-23-6L package.
Standard product is Pb-free and Halogen-free.
WD3120
Http//:www.willsemi.com
SOT-23-6L
1 LX
VDD 6
2 GND
OUT 5
3 NC
EN 4
Pin configuration (Top view)
Features
z Input voltage range
: 2.7~5.5V
z Continuous output current : 1.0A
z Switching frequency
: 1MHz (Typ.)
z Efficiency
: Up to 92%
z Low RDS(ON) main switch : 0.13 ȍ
z Main switch current limit : 2.75A (Min.)
z Fixed Output Voltage
: 5V
z Output voltage accuracy :f2%
3120 = Device code
YY = Year code
WW = Week code
Marking
Applications
z MID
z Mobile power pack
z Mobile phones
z Notebook computers
z Portable games
Will Semiconductor Ltd.
Order information
Device
Package
Shipping
WD3120E-6/TR SOT-23-6L 3000/Reel&Tape
1 Feb, 2013 - Rev. 1.3
1 page  
WD3120
Typical Characteristics (Ta=25oC, VIN=3.7V, VEN=VIN, unless otherwise noted)
100 1.2
95 V =4.2V
IN
90
1.1
85 1.0
V =3.2V
Rising
80
IN
V =3.7V
0.9
IN
75
70 0.8
Falling
65 0.7
60
0.6
55
50
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Output Current(A)
Efficiency vs. Output Current
5.10
0.5
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3
Input Voltage(V)
EN Threshold Voltage vs. Input Voltage
5.10
5.08 5.08
5.06 5.06
5.04
I =0mA I =1000mA
5.02 LOAD
LOAD
5.04
V =2.7V
IN
V =3.2V
IN
V =3.7V
IN
V =4.2V
IN
5.02
5.00 5.00
4.98
4.96
I =100mA
LOAD
I =500mA
LOAD
4.98
4.96
4.94 4.94
4.92 4.92
4.90
2.7
2.9 3.1 3.3 3.5 3.7 3.9 4.1
Input Voltage(V)
Output Voltage vs. Input Voltage
4.3
4.90
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2
Output Current(A)
Output Voltage vs. Output Current
1.10
1.05
1.00
0.95
0.90
0.85
0.80
2.7
I =500mA
LOAD
2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3
Input Voltage(V)
Frequency vs. Input Current
5.10
5.08
5.06
T=850C
5.04
V =2.7V
IN
V =3.2V
IN
V =3.7V
IN
5.02
5.00
4.98
4.96
V =4.2V
IN
4.94
4.92
4.90
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2
Output Current(A)
Output Voltage vs. Output Current
Will Semiconductor Ltd.
5 Feb, 2013 - Rev. 1.3
5 Page 
Package outline dimensions
SOT-23-6L
WD3120
Symbol
A
A1
A2
b
c
D
E
E1
e
e1
L
ș
Will Semiconductor Ltd.
Min.
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
1.800
0.300
0°
Dimensions in millimeter
Typ.
-
-
-
-
-
2.900
1.600
2.800
0.950(BSC)
-
-
-
11
Max.
1.250
0.100
1.150
0.500
0.200
3.020
1.700
2.950
2.000
0.600
8°
Feb, 2013 - Rev. 1.3
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet WD3120.PDF ] | |
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