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PDF APW7314 Data sheet ( Hoja de datos )
| Número de pieza | APW7314 | |
| Descripción | synchronous Buck Converter | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de APW7314 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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APW7314
24V 2A 500kHz synchronous Buck Converter
Features
General Description
• Wide Input Voltage from 4.5V to 24V
• 2A Continuous Output Current
• Adjustable Output Voltage from 0.807V to 13V
• Integrated Low Rds(on) MOSFETs
• Fixed 500kHz Switching Frequency
• Over-Temperature Protection
• Current-Limit Protection with HICCUP Mode
• Small TSOT-23-8A Package
• Lead Free and Green Devices Available
(RoHS Compliant)
APW7314 is a 2A synchronous buck converter with inte-
grated low Rds(on) power MOSFETs. The APW7314 de-
sign with a current-mode control scheme, can convert
wide input voltage of 4.5V to 24V to the output voltage
adjustable from 0.807V to 13V to provide excellent output
voltage regulation.
The APW7314 is also equipped with Under-voltage
lockout, soft-start, over-temperature and current-limit pro-
tection into a single package.
This device, available TSOT-23-8A, provides a very com-
pact system solution external components and PCB area.
Applications
Pin Configuration
• LCD Monitor/TV
• Set-Top Box
• DSL, Switch HUB
• Notebook Computer
Simplified Application Circuit
ISET 1
VIN 2
SW 3
GND 4
8 FB
7 VCC
6 EN
5 BST
APW7314
TSOT-23-8A
VIN
4.5V~24V
VIN
BST
VCC
APW7314 SW
ISET
FB
ON
OFF
EN
GND
VOUT
COUT
47µF
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.2 - Aug., 2013
1
www.anpec.com.tw
1 page  
APW7314
Typical Operating Characteristics
0.817
Reference Voltage vs. Junction
Temperature
0.812
0.807
0.802
0.797
-40 -20 0 20 40 60 80 100 120 140
Junction Temperature (oC)
Shutdown Current vs. Input
Voltage
12
10
8
6
4
2
0
4
0.5
8 12 16
Input Voltage(V)
20
Load Regulation
24
0
-0.5
-1
-1.5
0
0.4 0.8 1.2
Output Current (A)
1.6
2
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Aug., 2013
5
Efficiency vs. Load Current
FSW=500KHz, VIN=12V
100
95
90
85
80
75
70
65
60
0.01
Vout=5V
Vout=3.3V
Vout=1.2V
0.1 1
Output Current (A)
10
Supply Current vs. Input
Voltage
0.9
0.8
0.7
0.6
4
0.3
8 12 16
Input Voltage(V)
20
Line Regulation
24
0.2
0.1
0
-0.1
4
8 12 16 20 24
Input Voltage(V)
www.anpec.com.tw
5 Page 
APW7314
Function Description
Frequency Foldback
The foldback frequency is controlled by the FB voltage.
When the output is shortened to the ground, the frequency
of the oscillator will be reduced to 0.25 x F . This lower
SW
frequency allows the inductor current to safely discharge,
there by preventing current runaway. The oscillator’s fre-
quency will gradually increase to its designed rate when
the feedback voltgae on FB again approaches 0.807V.
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Aug., 2013
11
www.anpec.com.tw
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet APW7314.PDF ] | |
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