LP38853_15 Datasheet, PDF (2/28 Pages) Texas Instruments – LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start

LP38853
SNVS335D – DECEMBER 2006 – REVISED APRIL 2013
Typical Application Circuit
V_IN
V_BIAS
V_EN
GND
LP38853-ADJ
C_IN
10 PF Ceramic
IN
BIAS
OUT
C_BIAS
1 PF
ADJ
EN
SS
C_SS
GND
C_FF R1
R2
V_OUT
C_OUT
10 PF
Ceramic
GND
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Connection Diagram
SS 1
EN 2
IN 3
GND 4
ADJ 5
OUT 6
BIAS 7
TAB
IS
GND
Figure 1. DDPAK-7 – Top View
See Package Number KTW0007B
SS 1
EN 2
IN 3
GND 4
ADJ 5
OUT 6
BIAS 7
TAB
IS
GND
Figure 2. PFM – Top View
See Package Number NDZ0007B
PFM-7
Pin #
1
2
3
4
5
6
7
-
TAB
DDPAK-7
Pin #
1
2
3
4
5
6
7
-
TAB
ADJ 1
OUT 2
BIAS 3
GND 4
8 N/C
7 IN
6 EN
5 SS
DAP
Connect to GND
Figure 3. SO PowerPAD-8 – Top View
See Package Number DDA0008A
SO PowerPAD-
8
Pin #
5
6
7
4
1
2
3
8
-
PIN DESCRIPTIONS
Pin
Symbol
Pin Description
SS
EN
IN
GND
ADJ
OUT
BIAS
N/C
TAB
Soft-Start capacitor connection. Used to control the rise time of
V_OUT at turn-on.
Device Enable, High = On, Low = Off.
The unregulated voltage input
Ground
The feedback connection to set the output voltage
The regulated output voltage
The supply for the internal control and reference circuitry.
No internal connection
The PFM and DDPAK TAB is a thermal and electrical connection
that is physically attached to the backside of the die, and used as a
thermal heat-sink connection. See the Application Information
section for details.
2
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