150-mA, low-IQ, low-dropout voltage regulator with enable
Product details
Parameters
Package | Pins | Size
Features
- Input Voltage Range: 1.8 V to 5.5 V
- Output Voltage Range: 1.3 V to 3.7 V
- Excellent Line Transient Response: ±2 mV (typical)
- Excellent PSRR: –60 dB at 1 kHz typical
- Low Quiescent Current of 29 µA typical
- Small SC70-5 and SOT-23-5 Packages
- Fast Turnon Time of 30 µs typ.
- Typical < 1 nA Quiescent Current in Shutdown
- Ensured 150-mA Output Current
- Logic Controlled Enable 0.4 V/0.9 V
- Good Load Transient Response of 50 mVpp (typical)
- Thermal Overload and Short-Circuit Protection
- -40°C to 125°C Junction Temperature Range
Description
The LP5951 regulator is designed to meet the requirements of portable battery-powered systems providing a regulated output voltage and low quiescent current. When switched to shutdown mode via a logic signal at the Enable (EN) pin, the power consumption is reduced to virtually zero.
The LP5951 is designed to be stable with small 1-µF ceramic capacitors. The device also features internal protection against short-circuit currents and over-temperature conditions.
Performance is specified for a –40°C to 125°C temperature range.
The device is available in fixed output voltages in the range of 1.3 V to 3.7 V. For availability, please contact your local TI sales office.
Same functionality and pinout but is not an equivalent to the compared device:
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LP5951 Micropower, 150-mA Low-Dropout CMOS Voltage Regulator datasheet (Rev. G) | Dec. 15, 2014 |
Application note | A Topical Index of TI LDO Application Notes (Rev. F) | Jun. 27, 2019 | |
Technical articles | LDO basics: capacitor vs. capacitance | Aug. 01, 2018 | |
Technical articles | LDO Basics: Preventing reverse current | Jul. 25, 2018 | |
Technical articles | LDO basics: introduction to quiescent current | Jun. 20, 2018 | |
Technical articles | LDO basics: noise – part 1 | Jun. 14, 2017 | |
User guide | AN-1486 LP5951 Evaluation Board (Rev. C) | Apr. 30, 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LDC2114 Evaluation Module for inductive touch applications demonstrates using inductive sensing for button-press detection on a monolithic piece of metal. The LDC2114EVM does not include any example sensors or PCB coils but is capable of connecting up to 4 buttons using the LDCTOUCHCOMCOILEVM (...)
Features
- <7µA at 0.625 samples per second
- Up to 4 buttons supported
- Dedicated button logic outputs
- Integrated and configurable algorithms for button press detection
- Includes WM11299-ND-cable and ZIF connector for LDCTOUCHCOMCOILEVM
- PCB perforations allow for removal of the included MSP430 microcontroller so that a (...)
Description
The LP5951 regulator is designed to meet the requirements of portable, battery-powered systems providing a regulated output voltage and low quiescent current. When switched to shutdown mode via a logic signal at the Enable pin, the power consumption is reduced to virtually zero.
The LP5951 is (...)
Features
- Excellent line transient response: plus or minus 2mV typ.
- Excellent PSRR: -60dB at 1kHz typ.
- Low quiescent current of 29 microA typ.
- 1.8 to 5.5V input voltage range
- Small SC70-5 and SOT23-5 packages
- Fast turn-on time of 30 mcro seconds typ.
- Typ. < 1nA quiescent current in shutdown
- Guaranteed 150mA output (...)
Reference designs
Design files
-
download TIDA-00851-LDC0851 BOM.pdf (90KB) -
download TIDA-00851-LDC0851 Assembly Drawing .pdf (169KB) -
download TIDA-00851-LDC0851 PCB.pdf (1161KB) -
download TIDA-00851-LDC0851 CAD Files.zip (825KB) -
download TIDA-00851-LDC0851 Gerber .zip (1114KB)
Design files
-
download TIDA-00828 BOM.pdf (215KB) -
download TIDA-00828 Assembly Drawing.pdf (178KB) -
download TIDA-00828 PCB.pdf (1195KB) -
download TIDA-00828 CAD Files.zip (554KB) -
download TIDA-00828 Gerber.zip (564KB)
Design files
-
download TIDA-00615 BOM.pdf (214KB) -
download TIDA-00615 Assembly Drawing.pdf (175KB) -
download TIDA-00615 PCB.pdf (1406KB) -
download TIDA-00615 CAD Files.zip (867KB) -
download TIDA-00615 Gerber.zip (3208KB)
Design files
-
download TIDA-00563 BOM.pdf (51KB) -
download TIDA-00563 Assembly Drawing.pdf (177KB) -
download TIDA-00563 PCB.pdf (1125KB) -
download TIDA-00563 CAD Files.zip (1436KB) -
download TIDA-00563 Gerber.zip (2264KB)
Design files
-
download TIDA-00460 BOM.pdf (192KB) -
download TIDA-00460 PCB.pdf (1097KB) -
download TIDA-00460 CAD Files.zip (3417KB) -
download TIDA-00460 Assembly Drawing.pdf (189KB) -
download TIDA-00460 Gerber.zip (367KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SC70 (DCK) | 5 | View options |
SOT-23 (DBV) | 5 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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