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PDF SR2803 Data sheet ( Hoja de datos )
| Número de pieza | SR2803 | |
| Descripción | 3A SYNCHRONOUS BUCK CONTROLLER | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SR2803 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
SR2803
LINEAR INTEGRATED CIRCUIT
330KHZ, 3A SYNCHRONOUS
BUCK CONTROLLER
DESCRIPTION
The UTC SR2803 is a synchronous buck regulator. The device
provides 3A of continuous load current over a wide input voltage
of 4V~28V. Current mode control provides fast transient response
and cycle by cycle current limit. Integrates soft start, and
shutdown mode.
The UTC SR2803 can provide low-ripple power, high
efficiency, and perfect transient characteristics. The duty ratio
varies linearly from 0% to 92% in the PWM control. The error
amplifier circuit and soft-start circuit included in this device can
prevent overshoot at startup. An enable function, an over current
protect (OCP) function and short circuit protect (SCP) are also
build inside, and when OCP happens, the operation frequency
will be reduced.
FEATURES
* Input voltage varies from 4V ~ 28V
* Output voltage varies from 0.8V to VCC
* Duty ratio varies from 0% to 92% PWM control
* With 330kHz typical oscillation frequency
* Thermal shutdown and SCP function and soft-start, current limit,
enable function
* Low ESR output capacitor(Multi-layer chip capacitor) application
* Halogen Free
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
SR2803L-S08-R
SR2803G-S08-R
Package
SOP-8
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
1 of 6
QW-R103-056.A
Free Datasheet http://www.Datasheet4U.com
1 page  
SR2803
TYPICAL APPLICATION CIRCUIT
MLCC
FB
EN
Rc
Co1 10k
51P Co2
10n
100k
COMP
VCC
Cin
22µF
+ V5
- 12
LINEAR INTEGRATED CIRCUIT
VSS
VSS
SW
L4
SW
10µH
5V/3A
Cout
22µF
Rbf2
6.8K
Rbf1
1.3K
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R103-056.A
Free Datasheet http://www.Datasheet4U.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet SR2803.PDF ] | |
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