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PDF SC4210 Data sheet ( Hoja de datos )
| Número de pieza | SC4210 | |
| Descripción | 8-Pin N-FET Linear Regulator Controller | |
| Fabricantes | Semtech | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SC4210 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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POWER MANAGEMENT
Description
The SC4210 Linear Regulator Controller includes all the
features required for an extremely low dropout linear
regulator that uses an external N-channel MOSFET as
the pass transistor. The device can operate from input
voltages as low as 4V and can provide high current lev-
els, thus providing an efficient linear solution for custom
processor voltages, bus termination voltages, and other
logic level voltages down to 0.5V. The on board charge
pump creates a gate drive voltage capable of driving an
external N-MOSFET which is optimal for low dropout volt-
age and high efficiency. The wide versatility of this IC al-
lows the user to optimize the setting of both current limit
and output voltage for applications beyond or between
standard 3-terminal linear regulator ranges.
The 8-pin controller IC features a duty ratio current limit-
ing technique that provides peak transient loading capa-
bility while limiting the average power dissipation of the
pass transistor during fault conditions.
SC4210
8-Pin N-FET Linear
Regulator Controller
Features
PRELIMINARY
On-board charge pump to drive external N-MOSFET
Input voltage as low as 4V, up to 15V
Duty ratio mode over-current protection
Extremely low dropout voltage
Low external parts count
Output voltages as low as 0.5V
MSOP-8 package
Applications
Telecom and networking cards
Industrial applications
Wireless infrastructure
Set-top boxes
Post regulated power supplies
The SC4210 is available in an MSOP-8 surface mount
package.
Typical Application Circuit
R1
0.03
www.DataSVin =14V
C1
10µF
C2
0.01
C3
0.01
R2
1k
C4
100pF
1 VDD
2 CAP
3 GND
4 COMP
CS 8
CT 7
FB 6
VOUT 5
U1
SC4210
C5
0.1
Q1
FDB7030BL
R3
43k
R4
11.5k
C6
0.01
R5
499
heet4U.comRevision: November 9, 2004
1
Vout = 12V @ 3A
C7
10µF
www.semtech.com
1 page  
POWER MANAGEMENT
Block Diagram
SC4210
PRELIMINARY
Control Loop Block Diagram
2004 Semtech Corp.
Figure 1.
5
www.semtech.com
5 Page 
POWER MANAGEMENT
Evaluation Board Circuit
SC4210
PRELIMINARY
Vin
C1
*
R1
*
C2
*
C3
0.01
C4
0.01
C5
* R2
*
C6
*
1 VDD
CS 8
2 CAP
CT 7
3 GND
FB 6
4 COMP
VOUT 5
U1
SC4210
C7
0.1
Q1
FDB7030BL
R3
*
R4
*
C8
*
R5
*
Vout
C9
*
* Denotes variable components
Evaluation Board Layout and Components Placement
2004 Semtech Corp.
11
www.semtech.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet SC4210.PDF ] | |
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