LP38691DTX-5.0 Datasheet, PDF (2/27 Pages) Texas Instruments – LP38693 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors

LP38691, LP38693
SNVS321K – JANUARY 2005 – REVISED APRIL 2013
Connection Diagrams
V_EN 1
N/C 2
V_OUT 3
V_IN 4
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5 GND
Figure 1. PFM (LP38691DT-X.X) – Top View
See Package Number NDP0003B
Figure 2. SOT-223 (LP38693MP-X.X) – Top View
See Package Number NDC0005A
V_IN 1
GND 2
N/C 3
Exposed Pad
on Bottom
(DAP)
6 V_IN
5 SNS
4 VOUT
V_IN 1
GND 2
V_EN 3
Exposed Pad
on Bottom
(DAP)
6 V_IN
5 SNS
4 V_OUT
Figure 3. 6-Lead WSON (LP38691SD-X.X) – Top
View
See Package Number NGG0006A
Figure 4. 6-Lead WSON (LP38693SD-X.X) – Top
View
See Package Number NGG
Pin
V_IN
GND
SNS
V_EN
V_OUT
DAP
PIN DESCRIPTIONS
Description
This is the input supply voltage to the regulator. For WSON devices, both V_IN pins must be tied together for
full current operation (250mA maximum per pin).
Circuit ground for the regulator. For the PFM and SOT-223 packages this is thermally connected to the die
and functions as a heat sink when the soldered down to a large copper plane.
Output sense pin allows remote sensing at the load which will eliminate the error in output voltage due to
voltage drops caused by the resistance in the traces between the regulator and the load. This pin must be
tied to V_OUT.
The enable pin allows the part to be turned ON and OFF by pulling this pin high or low.
Regulated output voltage
WSON Only - The DAP (Exposed Pad) functions as a thermal connection when soldered to a copper plane.
See WSON MOUNTING section in APPLICATION HINTS for more information.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
2
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