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PDF AOZ1915 Data sheet ( Hoja de datos )
| Número de pieza | AOZ1915 | |
| Descripción | 1.5A General Purpose Boost Regulator | |
| Fabricantes | Alpha & Omega Semiconductors | |
| Logotipo |  |
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AOZ1915
1.5A General Purpose Boost Regulator
General Description
The AOZ1915 is a high-performance, current-mode,
constant frequency boost regulator with internal
MOSFET and internal Schottky diode. The 600kHz /
1.2MHz switching frequency allows the use of low-profile
inductor and capacitors. The current-mode control
ensures easy loop compensation and fast transient
response. The AOZ1915 works from a 2.7V to 5.5V input
voltage range and generates an output voltage as high
as 22V. Other features include input under-voltage
lockout, cycle-by-cycle current limit, thermal shutdown
and soft-start.
The AOZ1915 is available in a tiny 4mm x 3mm 12-pin
DFN package and is rated over a -40°C to +85°C
Features
● 2.7V to 5.5V input voltage range
● Adjustable output up to 22V
● Internal Schottky diode
● 600kHz/1.2MHz constant switching frequency
● Cycle-by-cycle current limit
● Thermal overload protection
● Programmable Soft-start
● Small 4mm x 3mm DFN 12L package
Applications
● LCD TV
● LCD Monitors
● Notebook Displays
● PCMCIA Cards
● Hand-Held Devices
● GPS power
● TV tuner
Typical Application Circuit
VIN
L1
4.7µH
VOUT
C1
10µF
C4
IN
FSEL
SS
LX OUT
AOZ1915
R2 C2
FB 10µF
R1
GND
OFF ON
EN
COMP
Figure 1. Typical Application Circuit
R3
C3
Rev. 1.1 July 2009
www.aosmd.com
Page 1 of 14
1 page  
AOZ1915
Typical Performance Characteristics
Circuit of Figure 1. TA = 25°C, VIN = 3.3V, VEN = 2V, VOUT = 8V unless otherwise specified.
Switching Waveform
(IOUT = 400mA, fLX = 1.2MHz, L = 4.7µH)
Switching Waveform
(IOUT = 400mA, fLX = 600kHz, L = 10µH)
LVX
5V/div
LVX
5V/div
IL
0.5A/div
IL
0.5A/div
400ns/div
Load Transient Response
(IOUT = 40mA to 400mA, fLX = 1.2MHz, L = 4.7µH)
1µs/div
Load Transient Response
(IOUT = 40mA to 400mA, fLX = 600kHz, L = 10µH)
Vo Ripple
200mV/div
Vo Ripple
200mV/div
Io
0.2A/div
200µs/div
Startup Waveform
(ROUT = 200Ω, fLX = 1.2MHz, L = 4.7µH)
VEN
2V/div
Vo
5V/div
IL
0.5A/div
Io
0.2A/div
200µs/div
Startup Waveform
(ROUT = 200Ω, fLX = 600kHz, L = 10µH)
VEN
2V/div
Vo
5V/div
IL
0.5A/div
200µs/div
200µs/div
Rev. 1.1 July 2009
www.aosmd.com
Page 5 of 14
5 Page 
Package Dimensions, DFN 4 x 3
Index Area
(D/2 x E/2)
AOZ1915
A
D/2
E/2
E
A
A1
TOP VIEW
b
SIDE VIEW
A3
Seating
Plane
Pin #1 IDA
Chamfer 0.15
L
E1/2
E1
L1
1
e
L2
D1 D2
BOTTOM VIEW
L3
L3
Rev. 1.1 July 2009
www.aosmd.com
Page 11 of 14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AOZ1915.PDF ] | |
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