LP38855_15 Datasheet, PDF (2/20 Pages) Texas Instruments – 1.5A Fast-Response High-Accuracy LDO Linear Regulator with Enable

LP38855
SNVS461D – OCTOBER 2006 – REVISED APRIL 2013
Connection Diagrams
EN 1
IN 2
GND 3
OUT 4
BIAS 5
Top View
TAB
IS
GND
Figure 1. DDPAK/TO-263 Package
See Package Number KTT0005B
www.ti.com
Top View
EN 1
IN 2
GND 3
OUT 4
BIAS 5
TAB
IS
GND
Figure 2. TO-220 Package
See Package Number NDH0005D
Pin #
1
2
3
4
5
TAB
PIN DESCRIPTIONS
TO-220–5 and DDPAK/TO-263–5 Packages
Pin Symbol
Pin Description
EN
The device Enable pin.
IN
The unregulated input voltage pin
GND
Ground
OUT
The regulated output voltage pin
BIAS
The supply for the internal control and reference circuitry
The TAB is a thermal connection that is physically attached to the backside of the
TAB
die, and is used as a thermal heat-sink connection. See the Application Information
section for details
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.
Absolute Maximum Ratings⁽¹⁾⁽²⁾
Storage Temperature Range
Lead Temperature
ESD Rating
Power Dissipation⁽⁴⁾
Soldering, 5 seconds
Human Body Model⁽³⁾
V_IN Supply Voltage (Survival)
V_BIAS Supply Voltage (Survival)
V_EN Voltage (Survival)
V_OUT Voltage (Survival)
I_OUT Current (Survival)
Junction Temperature
−65°C to +150°C
260°C
±2 kV
Internally Limited
−0.3V to +6.0V
−0.3V to +6.0V
−0.3V to +6.0V
−0.3V to +6.0V
Internally Limited
−40°C to +150°C
(1) Absolute maximum ratings indicate limits beyond which damage to the component may occur. Operating ratings indicate conditions for
which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications, see Electrical
Characteristics. Specifications do not apply when operating the device outside of its rated operating conditions.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) The Human Body Model (HBM) is a 100 pF capacitor discharged through a 1.5k resistor into each pin. Test method is per JESD22-
A114. The HBM rating for device pin 1 (EN) is ±1.5 kV.
(4) Device power dissipation must be de-rated based on device power dissipation (T_D), ambient temperature (T_A), and package junction to
ambient thermal resistance (θ_JA). Additional heat-sinking may be required to ensure that the device junction temperature (T_J) does not
exceed the maximum operating rating. See the Application Information section for details.
2
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