The LP2950 and LP2951 are micropower low dropout (LDO) linear voltage regulators that are specifically designed to maintain proper regulation with an extremely low input-to-output voltage differential. These devices feature a very low quiescent bias current of 75 µA and are capable of supplying output currents over 100 mA. Internal current and thermal limiting protection is provided.
The LP2951 LDO linear voltage regulator has three additional features. The first is the Errorbar Output which can be used to signal external circuitry of an out-of-regulation condition or as a microprocessor power-on reset. The second feature allows the output voltage to be preset to 5.0 V, 3.3 V, or 3.0 V output (depending on the version) or programmed from 1.25 V to 29 V. It consists of a pinned out resistor divider along with direct access to the Error Amplifier feedback input. The third feature is a Shutdown input that allows a logic-level signal to turn off or turn on the regulator output.
Due to the low input-to-output voltage differential and bias current specifications, these devices are ideally suited for battery-powered computers, consumer, and industrial equipment where an extension of useful battery life is desirable. The LP2950 is available in the three-pin case 29 and DPAK packages and the LP2951 is available in the eight-pin dual-in-line, SO-8, and Micro-8 surface mount packages.
ONSemi LP2950CZ-5.0RPG's Features
- Low Quiescent Bias Current of 75 µA
- Low Input-to-Output Voltage Differential of 50 mV at 100 µA and 380 mV at 100 mA
- 5.0 V, 3.3 V or 3.0 V ±0.5% Allows Use as a Regulator or Reference
- Extremely Tight Load and Line Regulation
- Requires Only a 1.0 µF Output Capacitor for Stability
- Internal Current and Thermal Limiting
- NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q100 Qualified and PPAP Capable
- These Devices are Pb-Free and RoHS Compliant
- Error Output Signals an Out of Regulation Condition
- Output Programmable from 1.25 V to 29 V
- Logic Level Shutdown Input
ONSemi LP2950CZ-5.0RPG's Applications
ONSemi LP2950CZ-5.0RPG Attributes
The following are basic parameters of the part selected concerning the characteristics of the part and the categories it belongs to.
| Status |
Active |
Compliance |
PbAHP |
| Package Type |
TO-92 |
Case Outline |
29-10 |
| MSL Type |
NA |
MSL Temp (°C) |
0 |
| Container Type |
FNFLD |
Container Qty. |
2000 |
| ON Target |
N |
Output |
Single |
| Polarity |
Positive |
VO (V) |
5 |
| IO Typ (A) |
0.1 |
VI Min (V) |
3.1 |
| VI Max (V) |
30 |
VDO Typ (V) |
0.35 |
| Iq Typ (mA) |
0.093 |
PSRR (dB) |
48 |
| Noise (µVrms) |
56 |
Enable |
No |
| PowerGood |
No |
Application |
Industrial |
| Pricing ($/Unit) |
$0.2156 |
ONSemi LP2950CZ-5.0RPG's Category-Low Drop Out(LDO) Regulators
LDO stands for Low Dropout Regulator, which is a low-power low-dropout linear voltage regulator. It automatically adjusts the voltage occupied by the transistor or field-effect transistor in the linear region through internal negative feedback to obtain a stable output voltage drop from the input voltage.
Under the condition of changes in input voltage or load current, LDO can still maintain a stable output voltage; it has extremely low inherent noise and a high power supply rejection ratio (PSRR). More details： Introduction and Common Types of Linear Low Dropout Voltage Regulator Chips.
Manufacturer of LP2950CZ-5.0RPG - ONSemi
Onsemi (NASDAQ: ON) has been on the road to driving disruptive innovation and striving to build a better future. Focused on the automotive and industrial endpoint markets, the company is currently accelerating change and embracing the transformation of megatrends, including automotive electrification and automotive safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. Onsemi's smart power and sensing technologies, with a highly differentiated portfolio of innovative products, solve the world's complex challenges and puzzles, leading the way to create a safer, cleaner, and smarter world.
Onsemi has a responsive, reliable supply chain and quality programs, as well as strong environmental, social, and governance (ESG) programs. Headquartered in Scottsdale, Arizona, the company's global network includes manufacturing plants, sales offices, and design centers covering all major markets.
ON Semiconductor's portfolio of discrete devices and power modules offers a full range of high-, mid-, and low-voltage power discrete devices and advanced power module solutions, including IGBTs, MOSFETs, SiC, Si/SiC hybrid modules, diodes, SiC diodes, and intelligent power modules (IPMs).
ON Semiconductor's innovative power management products provide better power factor, enhanced active-mode energy efficiency, and lower standby power consumption, resulting in energy-efficient solutions for a wide range of applications. ON Semiconductor signal conditioning and control products include amplifiers, comparators, transfer drivers, microcontrollers, data converters (ADCs), and digital potentiometers (POTs). More details: ON Semiconductor.
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