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 3A • Available in TO-263, TO-263 THIN packages • Guaranteed VADJ accuracy of ±1.5% @ 25°C (A Grade) • Guaranteed VADJ accuracy of ±3.5% @ 25°C (STD) • Over-Temperature and Over-Current protection • −40°C to +125°C operating TJ range • Enable pin (LP38501) 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 LP38501/3 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 LP38501/3 has low quiescent current that changes little with load current. Ground Pin Current: Typically 2 mA at 3A 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

Also Recommended LP38503-ADJ▲ 3A FlexCap LDO Without Enable MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

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

Datasheet

Title		Size	Date	Other Language
	LP38501/3-ADJ, LP38501A/3A-ADJ 3A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs	383 Kbytes	30-Oct-09	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1732: Application Note 1732 LP38501TS-ADJ Evaluation Board	146 Kbytes	22-May-08
	AN-1824: Application Note 1824 FlexCap Technology Simplifies LDO Design	196 Kbytes	23-Sep-08
	AN-1781: Application Note 1781 LP38501TJ-ADJ Evaluation Board	146 Kbytes	29-Jan-08
	AN-1830: Application Note 1830 LP38501ATJ-ADJ Evaluation Board	146 Kbytes	4-Apr-08

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)
LP38501ATJ-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38501TJ-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38501TS-ADJ	CMOS7	0	18406	0	0	1089000	4	309006723
LP38501TSX-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.

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