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PDF WD3126 Data sheet ( Hoja de datos )
| Número de pieza | WD3126 | |
| Descripción | Boost Converter | |
| Fabricantes | WillSEMI | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de WD3126 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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WD3126
1A output current, Adj. Output voltage, Boost
Converter with 2.75A Main-Switch
Descriptions
The WD3126 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) (130mΩ)
N-channel MOSFET and cycle by cycle current limit
protection. The device can provide 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. Internal compensation
network require only boost inductor, schottky diode,
and input and output capacitors for WD3126, save
PCB area.
The WD3126 is available in SOT-23-6L package.
Standard product is Pb-free and Halogen-free.
Features
Input voltage range
: 2.7~5.5V
Continuous output current : 1.0A
Switching frequency
: 1MHz (Typ.)
Efficiency
: Up to 92%
Main switch current limit : 2.75A (Min.)
Output voltage accuracy :±2%
Applications
MID
Mobile power pack
Mobile phones
Notebook computers
Portable games
WD3126
Http//:www.sh-willsemi.com
SOT-23-6L
1 LX
NC 6
2 GND
VDD 5
3 FB
EN 4
Pin configuration (Top view)
6 54
3126
YYWW
1 23
3126 = Device code
YY = Year code
WW = Week code
Marking
Order information
Device
Package
Shipping
WD3126E-6/TR SOT-23-6L 3000/Reel&Tape
Will Semiconductor Ltd.
1 Jun, 2014 - Rev. 1.0
1 page  
WD3126
Typical Characteristics (Ta=25oC, VIN=3.7V, VEN=VIN, R1=15KΩ, R2=110KΩ 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 Jun, 2014 - Rev. 1.0
5 Page 
Package outline dimensions
SOT-23-6L
WD3126
Symbol
A
A1
A2
b
c
D
E
E1
e
e1
L
θ
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°
Jun, 2014 - Rev. 1.0
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet WD3126.PDF ] | |
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