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PDF A7501 Data sheet ( Hoja de datos )
| Número de pieza | A7501 | |
| Descripción | 300KHz PFM STEP-UP DC-DC CONVERTER | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de A7501 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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AiT Semiconductor Inc.
www.ait-ic.com
A7501
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
DESCRIPTION
FEATURES
The A7501 Series is a CMOS VFM-control step-up Low voltage operation: Start up at 0.9V min
switching regulator that mainly consists of a reference
(IOUT=1mA) guaranteed
voltage source, an oscillator, and a comparator.
Low input current: During maximum operation:
Enabling products with a low ripple over a wide
range, high efficiency, and high output current.
18μA (VOUT=3.3V, typ.)
Duty ratio: 77% Built-in fixed-type PFM
Products with a fixed duty ratio of 75 %（Lower Output
controller
Voltage）or 88%(Higher Output Voltage) are also External parts: Coil, capacitor, and diode
available. With the A7501 Series, a step-up switching Output voltage: Settable to between
regulator can be configured by using an external coil,
2.5V to 5.5V , accuracy of 2%
capacitor, and diode. A protection circuit turns off the
built-in MOSFET when the voltage at the CONT pin
exceeds the limit to prevent it from being damaged.
This feature, along with the mini package and low
current consumption, makes the A7501 Series ideal
for applications such as the power supply unit of
portable equipment.
Available in SOT-89-3 and SOT-23 Packages
APPLICATION
Power supply for portable equipment such as
digital cameras, electronic notebooks, and PDA
Power supply for audio equipment such as
portable CD/MD players
Constant voltage power supply for cameras,
video equipment and communications
A7501 is available in SOT-89-3 and SOT-23
packages.
ORDER INFORMATION
equipment
Power supply for microcomputers
TYPICAL APPLICATION CIRCUIT
Package Type
Part Number
SOT-89-3
K3
A7501K3R-XX
A7501K3VR-XX
SOT-23
E3
A7501E3R-XX
A7501E3VR-XX
Note
XX: Output Voltage,
27=2.7V, 30=3.0V,
R: Tape & Reel
V: Halogen free Package
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
Components Normal Value: C1=10uF, C2=47uF,
L=22uH, D1 1N5818
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A7501
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
1. Input Voltage vs. Power Supply
2. Output Voltage vs. Current Consumption(TA=25℃)
3. Temperature vs. Active Current
4. Output Voltage vs. Input Current (TA=25℃)
5. Temperature vs. Input Current
6. Output Voltage vs. Switching Current (TA=25℃)
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
-5-
5 Page 
AiT Semiconductor Inc.
www.ait-ic.com
Dimension in SOT-23 Package (Unit: mm)
A7501
DC-DC CONVERTER/BOOST(STEP-UP)
SUPER-SMALL PACKAGE VFM CONTROL
STEP-UPSWITCHING REGULATOR
SYMBOL
A
A1
A2
b
c
D
E
E1
e
e1
L
θ
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(BSC)
1.800
2.000
0.300
0.600
0° 8°
REV1.3
- MAR 2009 RELEASED, JUN 2013 UPDATE-
- 11 -
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet A7501.PDF ] | |
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