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SC560B Datasheet(PDF) 7 Page - Semtech Corporation

Part # SC560B
Description  Dual Output Low Noise LDO Linear Regulator
PDF  18 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC560B Datasheet(HTML) 7 Page - Semtech Corporation

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SC560
7
Pin Con gurations and Descriptions
Pin #
Pin
Name
Pin Function
SC560A
SC560B
SC560C
SC560
Fixed Output
1
1
1
1
OUTB
Output for LDOB
2
2
2
2
VIN
Input supply voltage terminal
3
3
3
3
OUTA
Output for LDOA
4
4
4
FBA
Feedback sense pin for LDOA — Connect this pin to an
external resistor divider to set V
OUTA
5
5
5
5
GND
Analog and digital ground
6
6
6
6
EN
Logic input — active HIGH enables both LDOs for the SC560A and
SC560C, or LDOA for all other variants. EN must be active in the
SC560B and the xed output variants before ENB can be activated.
7
7
BYP
LDO bypass output — Bypass with a 22nF capacitor
7
4
ENB
Logic input — active HIGH enables LDOB for SC560B and the xed
voltage variants.
7
8
PGOOD
Power Good output — monitors the level of LDOA, switches low
when the output drops out of regulation (PGOOD is open drain).
8
8
8
FBB
Feedback sense pin for LDOB — Connect this pin to an external
resistor divider to set V
OUTB
Typical Characteristics (continued)
SC560A Noise Spectrum
1
10
100
1000
10000
0 .01
0 .1
1
10
100
1000
Frequency (kHz)
V
IN = 5V, FB = 10kΩ//0.1μF+5kΩ, by pass=22nF, COUT=1μF
SC560A PSRR vs. Frequency (Both LDOs)
0
10
20
30
40
50
60
70
80
90
0 .1
1
10
100
1000
10000
Frequency (kHz)
V
IN = 5V, FB = 10kΩ//0.1μF+5kΩ, Load=10mA, by pass=22nF, COUT=10μF



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