Datasheet
ADP2384 Data Sheet
Rev. 0 | Page 6 of 24
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
2
1
3
4
5
6
18
17
16
15
14
13
SW
SW
GND
VREG
FB
COMP
PGND
25
GND
26
SW
SW
BST
PVIN
PVIN
PVIN
NOTES
1. THE EXPOSED GND PAD MUST BE SOLDERED
TO A LARGE, EXTERNAL, COPPER GND PLANE
TO REDUCE THERMAL RESISTANCE.
2. THE EXPOSED SW PAD MUST BE CONNECTED
TO THE SW PINS OF THE ADP2384 BY USING
SHORT, WIDE TRACES, OR ELSE SOLDERED
TO A LARGE, EXTERNAL, COPPER SW PLANE
TO REDUCE THERMAL RESISTANCE.
8
9
10
11
7
PGND
PGND
PGND
PGND
12PGND
SW
20
19
21
EN
PVIN
PGOOD
22
RT
23
SYNC
24
SS
ADP2384
TOP VIEW
10725-003
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1 COMP Error Amplifier Output. Connect an RC network from COMP to GND.
2 FB Feedback Voltage Sense Input. Connect to a resistor divider from the output voltage, V
OUT
.
3 VREG
Output of the Internal 8 V Regulator. The control circuits are powered from this voltage. Place a 1 µF, X7R
or X5R ceramic capacitor between this pin and GND.
4 GND Analog Ground. Return of internal control circuit.
5, 6, 7, 14 SW Switch Node Output. Connect to the output inductor.
8, 9, 10, 11, 12, 13 PGND Power Ground. Return of low-side power MOSFET.
15 BST Supply Rail for the High-Side Gate Drive. Place a 0.1 µF, X7R or X5R capacitor between SW and BST.
16,17,18,19 PVIN Power Input. Connect to the input power source and connect a bypass capacitor between this pin and PGND.
20 EN
Precision Enable Pin. An external resistor divider can be used to set the turn-on threshold. To enable the
part automatically, connect the EN pin to the PVIN pin.
21 PGOOD Power-Good Output (Open Drain). A pull-up resistor of 10 kΩ to 100 kΩ is recommended.
22 RT
Frequency Setting. Connect a resistor between RT and GND to program the switching frequency from 200 kHz
to 1.4 MHz.
23
SYNC
Synchronization Input. Connect this pin to an external clock to synchronize the switching frequency from
200 kHz and 1.4 MHz. See the Oscillator section and Synchronization section for more information.
24 SS
Soft Start Control. Connect a capacitor from SS to GND to program the soft start time. If this pin is open,
the regulator uses the internal soft start time.
25 EP, GND The exposed GND pad must be soldered to a large, external, copper GND plane to reduce thermal resistance.
26 EP, SW
The exposed SW pad must be connected to the SW pins of the ADP2384, using short, wide traces, or else
soldered to a large, external, copper SW plane to reduce thermal resistance.