The LP38853 is a high-current, fast-response regulator that can maintain output voltage regulation with extremely low input-to-output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIAS provides voltage to drive the gate of the NMOS power transistor; VIN is the input voltage which supplies power to the load. The use of an external bias rail allows the device to operate from ultra-low VIN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an NMOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.
The fast transient response of this device makes it suitable for use in powering DSP and microcontroller core voltages, and switch-mode power-supply post regulators. Dropout Voltage: 240 mV (typical) at 3-A load current Low Ground Pin Current: 10 mA (typical) at 3-A load currentSoft Start: Programmable soft-start time
For all available packages, see the orderable addendum at the end of the data sheet.| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LP38853 3-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator With Enable and Soft Start datasheet (Rev. F) | PDF | HTML | 04 Nov 2016 |
| Application note | A Topical Index of TI LDO Application Notes (Rev. F) | 27 Jun 2019 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| Selection guide | Low Dropout Regulators Quick Reference Guide (Rev. P) | 21 Mar 2018 | ||
| EVM User's guide | AN-1504 LP38853S-ADJ Evaluation Board (Rev. C) | 24 Apr 2013 | ||
| EVM User's guide | AN-1560 LP38852MR-ADJ Evaluation Board (Rev. B) | 24 Apr 2013 | ||
| Application note | AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) | 24 Apr 2013 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| TO-220 (NDZ) | 7 | Ultra Librarian |
| TO-263 (KTW) | 7 | Ultra Librarian |
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