LP8340

Features:

` ±1.5% Typical V<sub>OUT</sub> tolerance
` 420mV Typical Dropout @ 1.0A (V_O = 5V)
`Wide Operating Range 2.7V to 10V
` Internal 1.0A PMOS Output Transistor
` 19A Typical Quiescent Current
` Thermal Overload Limiting
` Foldback Current Limiting
` Zener Trimmed Bandgap Reference
`Space saving LLP package
` Temperature Range
- LP8340C 0 to 125
- LP8340I −40 to 125




Application

· Hard Disk Drives
· Notebook Computers
· Battery Powered Electronics
· Portable Instrumentation




Specifications

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V_IN, V_OUT, V_OUT Sense, ADJ −0.3V to 12V
Storage Temperature Range −65 to 160
Junction Temperature (T_J) 150
Power Dissipation (Note 3)
ESD Rating
Human Body Model (Note 6) 2kV
Machine Model 200V

Output Current	1000 mA
Output Min	1.8, 2.5, 3.3, 5 Volt
Input Min Voltage	2.7 Volt
Input Max Voltage	10 Volt
Dropout Voltage	0.54, 0.67, 0.68, 0.42 Volt
Adjustable Output	No
Quiescent Current	0.019 mA
On/Off Pin	No
Error Flag	No
RegType	LDO
Temperature Min	0 deg C
Temperature Max	125 deg C
Output Voltage	1.8, 2.5, 3.3, 5 Volt
Output Max	1.8, 2.5, 3.3, 5 Volt
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Description

`The LP8340 low-dropout CMOS linear regulator is available in 5V, 3.3V, 2.5V, 1.8V and adjustable output versions. Packaged in the 6ld LLP package and 3ld DPAK. The LP8340 can deliver up to 1.0A output current.

`Typical dropout voltage is 420mV at 1.0A for the 5.0V version, 540mV at 1.0A for the 3.3V version, 670mV at 1.0A for the 2.5V version and 680mV at 800mA for the 1.8V version.

`The LP8340 includes a zener trimmed bandgap voltage reference, foldback current limiting and thermal overload limiting.

`The LP8340 features a PMOS output transistor which unlike PNP type low dropout regulators requires no base drive current. This allows the device ground current to remain less than 50A over operating temperature, supply voltage and irrespective of the load current.