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)
Noise (nV/rtHz)
V
IN
= 5V, FB = 10kΩ//0.1μF+5kΩ, by pass=22nF, C
OUT
=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)
PSRR (dB)
V
IN
= 5V, FB = 10kΩ//0.1μF+5kΩ, Load=10mA, by pass=22nF, C
OUT
=10μF
