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PDF AIC2364 Data sheet ( Hoja de datos )
| Número de pieza | AIC2364 | |
| Descripción | 4A Synchronous PWM/PSM Step-Down Converter | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AIC2364 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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AIC2364
4A Synchronous PWM/PSM Step-Down
Converter with Light Load Efficiency
FEATURES
DESCRIPTION
2.5V to 6V Input Voltage Range
The AIC2364 is a low-noise, pulse-width-
Adjustable Output Voltage from 0.8V to
modulated (PWM), DC-DC step-down converter.
Vin The device features an internal synchronous
4.0A Guaranteed Output Current
rectifier for high efficiency; it requires no external
Up to 95% Efficiency on Heavy Load
Schottky diode. The AIC2364 is ideally suited for
(Vin=3.3V, Vout=2.5V, Iout=2.0A)
Li-Ion battery applications. PWM/PSM mode
Up to 94% Efficiency on Moderate Load
extends battery life and enhance efficiency by
(Vin=3.3V, Vout=2.5V, Iout=200mA)
switching to a pulse-skipping-modulated mode
Up to 93% Efficiency on Light Load
during light loads. Shutdown mode places the
(Vin=3.3V, Vout=2.5V, Iout=20mA)
Low RDS(ON) Internal Switches: 70mΩ
No Schottky Diode Required
device in standby, reducing supply current to
under 2µA.
Other features of the AIC2364 include high
100% Duty Cycle in Low Dropout Operation
efficiency for all load range, low dropout voltage,
Optional 550KHz/1.2MHz Operating Fre-
short circuit protection, over temperature
quency
protection, and over voltage protection. It is
Optional Programmable Soft-Start (in DFN-
available in SOP-8 and DFN-12 packages.
12) or Internal Fixed 1ms Soft-Start (in SOP-
8)
Optional Power Good Monitor (Only in DFN-
12 Package)
SCP, OTP, OVP
APPLICATIONS
LCD TV
Multi-function Peripheral
Cellular Phones
CPU I/O Supplies
PDAs and Handy-Terminals
Battery-Operated Devices (1 Li-Ion or 3
NiMH/ NiCd).
APPLICATIONS CIRCUIT
Vin
5.5V R1
10
C1
10uF
C2
0.1uF
8
1
ON
5
OFF
6
VIN
VCC
EN
PGND
AAIICC22336634
LX
FB
REF
GND
7
4
2
3
L1
2.2uF
R2
50k
C4 R3
0.1uF 16k
Vout
3.3V
C3
22uF
Analog Integrations Corporation
Si-Soft Research Center
3A1, 1, Li-Hsin 1st Rd., Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
DS-2364G-01 20130111
www.analog.com.tw
1
1 page  
TYPICAL PERFORMANCE CHARACTERISTICS
(C1=10μF,C3=22μF,L1=2.2μH,TA=25℃,unless otherwise note)
AIC2364
100
90
80
70
60 Vin=5.0V
50
40
Vin=3.3V
5.0Vin
3.3Vin
30
20
10
0
0 500 1000 1500 2000 2500 3000 3500 4000
Output Current(mA)
Fig. 1 Efficiency(%) V.S. Load Current(mA)
(VCC = VIN, VOUT =1.8V)
100 Vin=4.2V
90
80
70
Vin=5.0V
60
50 5.0Vin
40 4.2Vin
30
20
10
0
0 500 1000 1500 2000 2500 3000 3500 4000
Output Current(mA)
Fig. 2 Efficiency(%) V.S. Load Current(mA)
(VCC = VIN, VOUT =3.3V)
VIN
VLX
VOUT
ILX VIN=VCC=5.0V, VOUT=1.8V, ILOAD=4A
Fig. 3 Switching Waveform
VIN=VEN
VLX
VOUT
ILX VIN=VCC=5.0V, VOUT=1.8V, ILOAD=4A
Fig. 5 Start-up Waveform
VIN
VLX
VOUT
ILX VIN=VCC=5.0V, VOUT=3.3V, ILOAD=4A
Fig. 4 Switching Waveform
VIN=VEN
VLX
VOUT
ILX VIN=VCC=5.0V, VOUT=3.3V, ILOAD=4A
Fig. 6 Start-up Waveform
5
5 Page 
away from the noise sources.
PHYSICAL DIMENSIONS (unit: mm)
SOP-8 Exposed Pad (Heat Sink) PACKAGE OUTLINE DRAWING
D
EXPOSED THERMAL PAD(Heat Sink)
(BOTTOM CENTER OF PACKAGE)
D1
E1
AIC2364
AA
e
SEE VIEW B
WITH PLATING
B
BASE METAL
SECTION A-A
L
VIEW B
GAUGE PLANE
SEATING PLANE
Note : 1. Refer to JEDEC MS-012E.
2. Dimension "D" does not include mold flash, protrusions
or gate burrs. Mold flash, protrusion or gate burrs shall not
exceed 6 mil per side .
3. Dimension "E" does not include inter-lead flash or protrusions.
4. Controlling dimension is millimeter, converted inch
dimensions are not necessarily exact.
S
Y
M
B
O
L
A
A1
B
C
D
D1
E
E1
e
H
h
L
θ
SOP-8 Exposed Pad(Heat Sink)
MILLIMETERS
MIN.
1.35
MAX.
1.75
0.00
0.31
0.15
0.51
0.17
4.80
0.25
5.00
1.50
3.80
1.0
3.50
4.00
2.55
1.27 BSC
5.80 6.20
0.25
0.40
0°
0.50
1.27
8°
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AIC2364.PDF ] | |
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