Features • FlexCap: Stable with ceramic, tantalum, or aluminum capacitors • Stable with 10 µF input/output capacitor • Adjustable output voltage from 0.6V to 5V • Low ground pin current • 25 nA quiescent current in shutdown mode • Guaranteed output current of 1.5A • Available in TO-263, TO-263 THIN, and LLP-8 packages • Guaranteed VADJ accuracy of ±1.5% @ 25°C (A Grade) • Guaranteed accuracy of ±3.5% @ 25°C (STD) • Over-Temperature and Over-Current protection • −40°C to +125°C operating TJ range • Enable pin (LP38502) Description National's FlexCap LDO's feature unique compensation that allows the use of any type of output capacitor with no limits on minimum or maximum ESR. The LP38500/2 series of low-dropout linear regulators operates from a +2.7V to +5.5V input supply. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. Developed on a CMOS process, (utilizing a PMOS pass transistor), the LP38500/2 has low quiescent current that changes little with load current. Ground Pin Current: Typically 2 mA at 1.5A load current. Disable Mode: Typically 25 nA quiescent current when the Enable pin is pulled low. Simplified Compensation: Stable with any type of output capacitor, regardless of ESR. Precision Output: "A" grade versions available with 1.5% VADJ tolerance (25°C) and 3% over line, load and temperature. Applications • ASIC Power Supplies In: •  Printers, Graphics Cards, DVD Players •  Set Top Boxes, Copiers, Routers • DSP and FPGA Power Supplies • SMPS Regulator • Conversion from 3.3V or 5V Rail

PSRR MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application *click for larger image PSRR	Block Diagram *click for larger image
Typical Performance *click for larger image

Datasheet

Title		Size	Date	Other Language
	LP38500/2-ADJ, LP38500A/2A-ADJ 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs	371 Kbytes	30-Oct-09	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1144: Application Note 1144 Maximizing Start-up Loads with the LM3352 Regulated Buck/Boost Switched Capacitor Converter	62 Kbytes	4-Oct-04

More Application Notes

Title		Size	Date	Other Language
	AN-1241: Application Note 1241 LP2995 Evaluation Board	373 Kbytes	25-Sep-02
	AN-1268: Application Note 1268 LP2996 Evaluation Board	67 Kbytes	5-Dec-02
	AN-1254: Application Note 1254 DDR-SDRAM Termination Simplified Using a Linear Regulator	49 Kbytes	1-Oct-02

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LP38500ASD-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38500ASDX-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38500ATJ-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38500SD-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38500SDX-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38500TJ-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38500TS-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38500TSX-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.