Automotive 500-mA, 10-V, adjustable low-dropout voltage regulator with enable
Product details
Parameters
Package | Pins | Size
Features
- Wide Input Voltage Range: 2.7 V to 10 V
- All WSON Options are Available as AEC-Q100 Grade 1
- Output Voltage Range: 1.25 V to 9 V
- 2% Adjust (ADJ) Pin Voltage Accuracy (25°C)
- Low Dropout Voltage: 250 mV at 500 mA
(Typical, 5-V Out) - Precision (Trimmed) Bandgap Reference
- Ensured Specs for –40°C to 125°C
- 1-µA Off-State Quiescent Current
- Thermal Overload Protection
- Foldback Current Limiting
- Ground (GND) Pin Curent: 55 µA (Typical) at Full Load
- Enable (EN) Pin (LP38693-ADJ)
Description
The LP3869x-ADJ low-dropout CMOS linear regulators provide 2% precision reference voltage, extremely low dropout voltage (250 mV at 500-mA load current, VOUT = 5 V), and excellent AC performance using ultra-low equivalent series resistance (ESR) ceramic output capacitors.
The low thermal resistance of the WSON and SOT-223 packages allow use of the full operating current even in high ambient temperature environments.
The use of a PMOS power transistor means that no DC base drive current is required to bias it, thus allowing the GND-pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.
For all available packages, see the orderable addendum at the end of the data sheet.Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | LP3869x-ADJ/Q1 500-mA Low-Dropout CMOS Linear Regulators Stable With Ceramic Output Capacitors datasheet (Rev. K) | Jan. 19, 2016 |
| 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 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LP38693SD-ADJ is a 500mA low-dropout linear regulator whose output voltage can be externally set to any value between 1.25V and 9V using two resistors. The output voltage on this evaluation board is pre-set to 3.30V. This application note gives information about the evaluation board supplied to (...)
Features
- Output voltage range of 1.25V to 9V
- 2.0% adjust pin voltage accuracy (25°C)
- Low dropout voltage: 250MV@ 500mA (typ. 5V out)
- Wide input voltage range (2.7V to 10V)
- Precision (trimmed) bandgap reference
- Guaranteed specs for -40°C to +125°C
- 1µ A off-state quiescent current
- Thermal overload protection
- Foldback (...)
Design tools & simulation
Reference designs
Design files
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| WSON (NGG) | 6 | 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.
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