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PDF SC4210A Data sheet ( Hoja de datos )
| Número de pieza | SC4210A | |
| Descripción | 8-Pin N-FET Linear Regulator Controller | |
| Fabricantes | Semtech | |
| Logotipo |  |
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POWER MANAGEMENT
Description
The SC4210A 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 1.75V and can provide high current
levels, thus providing an efficient linear solution for cus-
tom processor voltages, bus termination voltages, and
other logic level voltages down to 0.5V. The onboard
charge pump creates a gate drive voltage capable of driv-
ing an external N-MOSFET which is optimal for low drop-
out voltage and high efficiency. The wide versatility of
this IC allows 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.
SC4210A
8-Pin N-FET Linear
Regulator Controller
Features
On-board charge pump to drive external N-MOSFET
Input voltage as low as 1.75V to 5.5V
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 SC4210A is available in an MSOP-8 surface mount
package.
Typical Application Circuit
R1
0.015
www.DataVin =3.3V
C1
22µF
C2
0.01
C3
0.01
1 VDD
2 CAP
3 GND
CS
CT
FB
R2
24k
C4
150pF
4 COMP
VOUT
U1
SC4210A
Sheet4U.comRevision: October 26, 2004
8
7
6
5
C5
0.1
Q1
FDB7030BL
R3
39k
R4
1.30k
C6
0.01
R5
499
1
Vout = 1.8V @ 6Ap-k
C7opt.
10µF
www.semtech.com
1 page  
POWER MANAGEMENT
Block Diagram
SC4210A
Control Loop Block Diagram
2004 Semtech Corp.
Figure 1.
5
www.semtech.com
5 Page 
POWER MANAGEMENT
Outline Drawing - MSOP-8
e/2
AD
N
2X E/2
PIN 1
INDICATOR
E1 E
ccc C
2X N/2 TIPS
12
e
B
DIMENSIONS
DIM
INCHES
MIN NOM MAX
MILLIMETERS
MIN NOM MAX
A-
- .043 -
- 1.10
A1 .000 - .006 0.00 - 0.15
A2 .030 - .037 0.75 - 0.95
b .009 - .015 0.22 - 0.38
c .003 - .009 0.08 - 0.23
D .114 .118 .122 2.90 3.00 3.10
E1 .114 .118 .122 2.90 3.00 3.10
E .193 BSC
4.90 BSC
e .026 BSC
0.65 BSC
L .016 .024 .032 0.40 0.60 0.80
L1 (.037)
(.95)
N8
8
01 0° - 8° 0° - 8°
aaa .004
0.10
bbb .005
0.13
ccc .010
0.25
aaa C
SEATING
PLANE
C
D
A2 A
A1
bxN
bbb C A-B D
H
GAGE
PLANE
0.25
L
(L1)
DETAIL A
SIDE VIEW
SEE DETAIL A
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H-
3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
OR GATE BURRS.
4. REFERENCE JEDEC STD MO-187, VARIATION AA.
c
01
Land Pattern - MSOP-8
X
DIMENSIONS
DIM INCHES MILLIMETERS
C (.161)
(4.10)
(C)
GZ
G .098
P .026
2.50
0.65
X .016
0.40
Y .063
1.60
Y
Z .224
5.70
P
Contact Information
NOTES:
1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
Semtech Corporation
Power Management Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
2004 Semtech Corp.
11
SC4210A
www.semtech.com
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet SC4210A.PDF ] | |
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