XR77103-A0R5 Datasheet, PDF (7/19 Pages) Exar Corporation – Universal PMIC 3-Output Buck Regulator

XR77103-A0R5
Pin Functions (Continued)
Pin Number
21
22
23
24
25
26
27
28
29
30
31
32
-
Pin Name
NC
NC
NC
PGOOD
SYNC
EN
AGND
VIN
LX3
LX3
VIN3
BST3
E-PAD
Description
No connect.
No connect.
No connect.
Power good output. Open drain output asserted after all converters are sequenced and
within regulation.
External clock input pin. Connect to signal ground when unused.
Enable control input. Set EN high to enable converters.
Analog ground.
IC supply pin. Connect a capacitor as close as possible to this pin.
Switching node for Buck 3.
Switching node for Buck 3.
Input supply for Buck 3. Connect a capacitor as close as possible to this pin.
Bootstrap capacitor for Buck 3. Connect a bootstrap capacitor from this pin to LX3.
Connect to power ground.
REV1A
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