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PDF VP2128 Data sheet ( Hoja de datos )
| Número de pieza | VP2128 | |
| Descripción | Synchronous-Rectified Buck Converter | |
| Fabricantes | Viva Electronics | |
| Logotipo |  |
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1. VP2128  Hay una vista previa y un enlace de descarga de VP2128 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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VP2128
2A, 18V, Synchronous-Rectified Buck Converter
Description
Features
The VP2128 is an efficiency and low-cost buck 4.5V to 18V Input Voltage Range
converter with integrated low RDS(ON) high-side Adjustable Output from 0.922V to 16V
150mΩ and low-side 130mΩ MOSFET 2A Output Current
switches. It is capable of delivering 2A output Integrated 150mΩ/130mΩ MOSFET Switches
current over a wide range of supplying voltage 0.922V Voltage Reference with 2% Accuracy
from 4.5V to 18V. With a simple voltage divider, 93% Conversion Efficiency at 5V/1A Output
the output voltage is easily adjustable from Adapted Current Mode PWM Operation
0.922V to 16V.
Fixed 340kHz Switching Frequency
Other features such as programmable Integrated Boot-Diode
soft-start, integrated Boot-Diode, total Programmable Soft-Start Function
fault-free protection and 93% conversion Over Voltage and Under Voltage Protection
efficiency at 5V/1A output make VP2128 Over Temperature and Over Current Limitation
ideally to be used in portable consumer RoHS 2.0 compliant SO-8P Green Package with
electronics.
Exposed Pad
The VP2128 is available in popular SO-8P green
package with exposed pad.
Applications
Set-Up Box
Networking Device
MID/Netbook/Pad-Device
LCD Monitor/ LCD TV
Typical Application
VP2128 Rev A.01
-1-
2013/01/03
Visit http://www.viva-elec.com.tw for our products
Free Datasheet http://www.datasheet4u.net/
1 page  
VP2128
Typical Characteristics
VIN=12V, VOUT=3.3V, Inductor=10µH, CIN=10µF, COUT=22µF, TA=25℃, unless otherwise noted.
VIN (200mV/div)
VEN (5V/div)
VOUT (20mV/div)
VOUT (2V/div)
VLX (10V/div)
VLX (10V/div)
IL (500mA/div)
Time: 2.5µs/div
Figure 1. Steady State Operation
IL (1A/div)
Time: 2.5ms/div
Figure 2. Start-Up Through Enable
VEN (5V/div)
VOUT (2V/div)
VLX (10V/div)
IL (1A/div)
Time: 2.5ms/div
Figure 3. Shutdown Through Enable
VIN (1V/div)
VOUT (50mV/div)
VLX (10V/div)
IL (1A/div)
Time: 2.5µs/div
Figure 4. Heavy Load (2A) Operation
VIN (500mV/div)
VOUT (20mV/div)
VLX (10V/div)
IL (1A/div)
Time: 2.5µs/div
Figure 5. Medium Load (1A) Operation
VIN (200mV/div)
VOUT (50mV/div)
VLX (10V/div)
IL (1A/div)
Time: 2.5µs/div
Figure 6. Light Load (no load) Operation
VOUT (2V/div)
VOUT (1V/div)
IL (2A/div)
IL (2A/div)
Time: 100µs/div
Figure 7. Heavy Load (2A) Short Circuit
Recovery
Time: 50µs/div
Figure 8. Heavy Load (2A) Short Circuit
Protection
VP2128 Rev A.01
-5-
2013/01/03
Visit http://www.viva-elec.com.tw for our products
Free Datasheet http://www.datasheet4u.net/
5 Page 
VP2128
Package Information
SO-8P
VP2128 Rev A.01
- 11 -
2013/01/03
Visit http://www.viva-elec.com.tw for our products
Free Datasheet http://www.datasheet4u.net/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet VP2128.PDF ] | |
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