Datasheet

www.ti.com 16-Pin WQFN Pin Out
4 16-Pin WQFN Pin Out
Figure 2. 16-Pin WQFN (top view)
Table 1. Pin Descriptions 16-Pin WQFN
Pin Name Function
1,2 VIND
1
Power Input supply for Buck1.
11, 12 VIND
2
Power Input supply for Buck2.
15 VINC Power Input supply for control circuitry.
4 PGND
1
Power ground pin for Buck 1.
9 PGND
2
Power ground pin for Buck 2.
14 AGND Signal ground pin. Place the bottom resistor of the feedback network as close as possible to pin.
6 PG
1
Power Good Indicator for Buck 1. Pin is connected through a resistor to an external supply (open
collector output).
7 PG
2
Power Good Indicator for Buck 2. Pin is connected through a resistor to an external supply (open
collector output).
5 FB
1
Feedback pin for Buck 1. Connect to external resistor divider to set output voltage.
8 FB
2
Feedback pin for Buck 2. Connect to external resistor divider to set output voltage.
3 SW
1
Output switch for Buck 1. Connect to the inductor.
10 SW
2
Output switch for Buck 2. Connect to the inductor.
16 EN
1
Enable control input. Logic high enable operation for Buck 1. Do not allow this pin to float or be
greater than VIN + 0.3V.
13 EN
2
Enable control input. Logic high enable operation for Buck 2. Do not allow this pin to float or be
greater than VIN + 0.3V.
DAP Die Attach Pad Connect to system ground for low thermal impedance and as a primary electrical GND
connection.
3
SNVA353B–February 2009–Revised April 2013 AN-1870 LM26420 Evaluation Board
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