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PDF A7122 Data sheet ( Hoja de datos )
| Número de pieza | A7122 | |
| Descripción | 2A 3MHz 6V SYNCHRONOUS BUCK CONVERTER | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de A7122 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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AiT Semiconductor Inc.
www.ait-ic.com
A7122
DC-DC CONVERTER BUCK (STEP-DOWN)
2A 3MHz 6V SYNCHRONOUS BUCK CONVERTER
DESCRIPTION
FEATURES
The A7122 is a high efficiency synchronous, buck
DC/DC converter. Its input voltage range is from 2.6V
Adjustable Output Voltage, VFB=0.6V
Maximum output current is 2A
to 6V and provides an adjustable regulated output Range of operation input voltage: Max 6V
voltage from 0.6V to VIN while delivering up to 2A of
output current.
Standby current: 30uA (typ.)
Line regulation: 0.1%/V (typ.)
The internal synchronous switches increase Load regulation: 10mV (typ.)
efficiency and eliminate the need for an external High efficiency, up to 96%
Schottky diode. It runs at a fixed 3MHz frequency, Environment Temperature: -20°C~85°C
which allows the use of small inductor with L<1uH Available in DFN8(2x2) and SOT-25 Packages
while maintaining a high efficiency and small output
voltage ripple.
APPLICATION
When Mode pin is connected to GND, the A7122 is
operating in PFM/PWM auto-switch mode which Power Management for 3G modem
enhance the efficiency at light-load.
Smart Phone
Tablet PC
The A7122 is available in DFN8(2x2) and SOT-25
Set Top Box
packages.
Other Battery Powered Device
ORDERING INFORMATION
TYPICAL APPLICATION
Package Type
Part Number
DFN8(2x2)
A7122J8R
J8
A7122J8VR
SOT-25
Note
A7122E5R
E5
A7122E5VR
R: Tape & Reel
V: Halogen free Package
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
REV1.0
- JUL 2012 RELEASED -
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A7122
DC-DC CONVERTER BUCK (STEP-DOWN)
2A 3MHz 6V SYNCHRONOUS BUCK CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=3.6V, L=1uH, CIN=10uF, COUT=10uF, TA=25°C, unless otherwise stated)
1. Efficiency at VOUT=3.3V
2. Efficiency at VOUT=1.8V
3. Efficiency at VOUT=1.2V
4. Load Regulation at VOUT=1.8V
5. Switching waveform
VIN=3.6V, VOUT=1.2V IOUT=0A
6. Switching waveform
VIN=3.6V, VOUT=1.2V IOUT=0.7A
REV1.0
- JUL 2012 RELEASED -
-5-
5 Page 
AiT Semiconductor Inc.
www.ait-ic.com
PACKAGE INFORMATION
Dimension in DFN8(2x2) (Unit: mm)
A7122
DC-DC CONVERTER BUCK (STEP-DOWN)
2A 3MHz 6V SYNCHRONOUS BUCK CONVERTER
Symbol
A
A1
A3
D
E
D1
E1
k
b
e
L
REV1.0
- JUL 2012 RELEASED -
Min Max
0.700
0.800
0.000
0.050
0.180
0.250
1.900
2.100
1.900
2.100
1.500
1.700
1.000
1.200
0.200MIN.
0.180
0.300
0.500(BSC)
0.200
0.300
- 11 -
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet A7122.PDF ] | |
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