Datasheet

LP3853, LP3856
www.ti.com SNVS173G –FEBRUARY 2003–REVISED APRIL 2013
LP3856
Figure 4.
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)
Storage Temperature Range −65°C to +150°C
Lead Temperature
(Soldering, 5 sec.) 260°C
ESD Rating
(2)
2 kV
Power Dissipation
(3)
Internally Limited
Input Supply Voltage (Survival) −0.3V to +7.5V
Shutdown Input Voltage (Survival) −0.3V to 7.5V
Output Voltage (Survival),
(4)
,
(5)
−0.3V to +6.0V
I
OUT
(Survival) Short Circuit Protected
Maximum Voltage for ERROR Pin V
IN
Maximum Voltage for SENSE Pin V
OUT
(1) Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which
the device is intended to be functional, but does not ensure specific performance limits. For ensured specifications and test conditions,
see Electrical Characteristics. The ensured specifications apply only for the test conditions listed. Some performance characteristics may
degrade when the device is not operated under the listed test conditions.
(2) The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
(3) At elevated temperatures, devices must be derated based on package thermal resistance. The devices in TO220 package must be
derated at θ
jA
= 50°C/W (with 0.5in
2
, 1oz. copper area), junction-to-ambient (with no heat sink). The devices in the TO263 surface-
mount package must be derated at θ
jA
= 60°C/W (with 0.5in
2
, 1oz. copper area), junction-to-ambient. See Application Hints.
(4) If used in a dual-supply system where the regulator load is returned to a negative supply, the output must be diode-clamped to ground.
(5) The output PMOS structure contains a diode between the V
IN
and V
OUT
terminals. This diode is normally reverse biased. This diode will
get forward biased if the voltage at the output terminal is forced to be higher than the voltage at the input terminal. This diode can
typically withstand 200mA of DC current and 1Amp of peak current.
Operating Ratings
Input Supply Voltage
(1)
2.5V to 7.0V
Shutdown Input Voltage −0.3V to 7.0V
Maximum Operating Current (DC) 3A
Junction Temperature −40°C to +125°C
(1) The minimum operating value for V
IN
is equal to either [V
OUT(NOM)
+ V
DROPOUT
] or 2.5V, whichever is greater.
Copyright © 2003–2013, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Links: LP3853 LP3856