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PDF APW7324 Data sheet ( Hoja de datos )
| Número de pieza | APW7324 | |
| Descripción | 500KHz Synchronous Buck Converter | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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APW7324
4A,5V, 500KHz Synchronous Buck Converter
Features
General Description
• High Efficiency up to 94%
APW7324 is a synchronous buck converters with inte-
- Automatic Skip/PWM Mode Operation
grated 85mΩ high side and 75mΩ low side power
•
Adjustable Output Voltage from 0.8V to V
IN
• Operating from 2.9 to 6V Supply
MOSFETs. The APW7324 with a current-mode control
scheme can convert wide input voltage of 2.9V to 6V to
• Integrated 85mΩ High Side / 75mΩ Low Side the output voltage adjustable from 0.8V to 6V to provide
excellent output voltage regulation.
MOSFETs
The APW7324 is equipped with an automatic Skip/PWM
• Low Dropout Operation: 100% Duty Cycle
mode operation. At light load , the IC operates in the Skip
• Stable with Low ESR Ceramic Capacitors
mode to reduce the switching losses. At heavy load, the
• Current up to 4A
IC works in PWM mode.
• Power-On-Reset Detection on VCC and VIN
The APW7324 is also equipped with Power-on-reset, soft
• Integrate Soft-Start and Soft-Stop
start, soft-stop, and whole protections (under-voltage,
• Over-Temperature Protection
• Over-Voltage Protection
• Under-Voltage Protection
• High/ Low Side Current Limit
• Power Good Indication
over-voltage, over-temperature and current-limit) into a
single package.
This device, available in SOP-8P and TDFN3x3-10
packages, provides a very compact system solution ex-
ternal components and PCB area.
• Enable/Shutdown Function
Simplified Application Circuit
• Available in SOP-8P and TDFN3x3-10 Packages
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Notebook Computer & UMPC
• LCD Monitor/TV
• Set-Top Box
• DSL, Switch HUBr
• Portable Instrument
Pin Configuration
Exposed Pad (connected to GND plane
for better heat dissipation
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Aug., 2013
1
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
1 page  
APW7324
Typical Operating Characteristics
Efficiency vs. Output Current
100
95
90
85 VOUT =3.3V
80
VOUT =1.2V
75
70
65 VIN =5V
60
0.001
0.01
0.1
1
10
Output Current, IOUT(A)
High Side MOSFET Current Limit
Threshold vs. VIN Voltage
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.5 3 3.5 4 4.5 5 5.5 6
VIN Voltage,VVIN(V)
Reference Voltage vs. Output Current
0.85
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
0.75
0 0.5 1 1.5 2 2.5 3 3.5 4
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Aug., 2013
5
VCC Supply Current vs. VCC
Supply Voltage
VCC =5V, VIN =5V, VOUT =3.3V,
No Load, TA=25oC
VCC Supply Voltage (V)
On-Resistance vs. VIN Voltage
TA=25oC
P-MOSFET
N-MOSFET
2.5 3 3.5 4 4.5 5 5.5 6
VIN Voltage, VVIN (V)
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
5 Page 
APW7324
Typical Application Circuit
VIN
5V
CIN
22µF
On
Off
100kΩ
R4
2.2Ω
C2
1µF
VIN LX
VCC
FB
APW7324
R5
C3
POK
EN
Exposed
GND PGND pad
L1
2.2 µH
C1
22pF
VOUT
1.8V
R1
25kΩ
COUT
22µ Fx2
R2
20kΩ
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Aug., 2013
11
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet APW7324.PDF ] | |
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