Datasheet

ADP1706/ADP1707/ADP1708
Rev. 0 | Page 6 of 20
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
EN
1
GND
2
IN
3
IN
4
SS
8
SENSE
7
OUT
6
OUT
5
ADP1706
TOP VIEW
(Not to Scale)
06640-004
ADP1706
TOP VIEW
(Not to Scale)
PIN 1
INDICATOR
1EN
2
G
ND
3IN
4IN
7 SENSE
8SS
6OUT
5OUT
06640-007
Figure 4. 8-Lead SOIC, ADP1706 Figure 5. 8-Lead LFCSP, ADP1706
EN
1
GND
2
IN
3
IN
4
TRK
8
SENSE
7
OUT
6
OUT
5
ADP1707
TOP VIEW
(Not to Scale)
06640-006
PIN 1
INDICATOR
1EN
2
G
ND
3IN
4IN
7SENSE
8TRK
6OUT
5OUT
TOP VIEW
(Not to Scale)
ADP1707
06640-009
Figure 6. 8-Lead SOIC, ADP1707 Figure 7. 8-Lead LFCSP, ADP1707
EN
1
GND
2
IN
3
IN
4
ADJ
8
SENSE
7
OUT
6
OUT
5
ADP1708
TOP VIEW
(Not to Scale)
06640-005
PIN 1
INDICATOR
1EN
2GND
3IN
4IN
7 SENSE
8 ADJ
6OUT
5OUT
ADP1708
TOP VIEW
(Not to Scale)
06640-008
Figure 8. 8-Lead SOIC, ADP1708 Figure 9. 8-Lead LFCSP, ADP1708
Table 4. Pin Function Descriptions
ADP1706
Pin No.
ADP1707
Pin No.
ADP1708
Pin No.
Mnemonic Description
1 1 1 EN
Enable Input. Drive EN high to turn on the regulator; drive it low to turn off the
regulator. For automatic startup, connect EN to IN.
2 2 2 GND Ground.
3, 4 3, 4 3, 4 IN Regulator Input Supply. Bypass IN to GND with a 4.7 μF or greater capacitor.
5, 6 5, 6 5, 6 OUT Regulated Output Voltage. Bypass OUT to GND with a 4.7 μF or greater capacitor.
7 7 7 SENSE
Sense. Measures the actual output voltage at the load and feeds it to the error
amplifier. Connect SENSE as close as possible to the load to minimize the effect
of IR drop between the regulator output and the load.
8 N/A N/A SS Soft Start. A capacitor connected to this pin determines the soft start time.
N/A 8 N/A TRK
Track. The output follows the voltage applied at the TRK pin. See the
Theory of
Operation
section for a more detailed description.
N/A N/A 8 ADJ Adjust. A resistor divider from OUT to ADJ sets the output voltage.
EP EP EP EP
The exposed pad on the bottom of the SOIC package and the LFCSP package. EP
enhances thermal performance and is electrically connected to GND inside the
package. User is recommended to connect EP to the ground plane on the board.