Datasheet

2
3
4
7
9
8
VIND
EN
NC
DAP
SW
SW
SGND
6
10
1
5
FB
PGND
VINC
VIND
LMR10530
V
IN
VIND
SW
FB
SGND
L1
R1
D1
C1
V
OUT
VINC
PGND
C2
R2
EN
1
2
3 6
5
7,8
9,10
R3
C3
4
NC
LMR10530
SNVS814A –JUNE 2012–REVISED APRIL 2013 www.ti.com
Typical Application Circuit
Connection Diagram
10-Pin WSON
See Package Number DSC
PIN DESCRIPTIONS
Pin(s) Name Description
1 VINC Input supply for internal bias and control circuitry. Need to locally bypass this pin to GND.
Enable control input. Logic high enables operation. Do not allow this pin to float or subject to
2 EN
voltages greater than V
IN
+ 0.3V.
Signal (analog) ground. Place the bottom resistor of the feedback network as close as possible to
3 SGND
this pin for good load regulation.
4 NC No user function, connect this pin to GND.
5 FB Feedback pin. Connect this pin to the external resistor divider to set output voltage.
6 PGND Power ground pin. Provides ground return path for the internal driver.
7, 8 SW Switch pins. Connect these pins to the inductor and catch diode.
9, 10 VIND Input supply voltage. Connect a bypass capacitor locally from these pins to PGND.
Connect to system ground for low thermal impedance, but it cannot be used as a primary GND
DAP Die Attach Pad
connection.
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