Overview
The LP2951ACMM-3.0 is a micropower voltage regulator produced by Texas Instruments, which acquired National Semiconductor. This component is part of the LP2951 series, known for its high accuracy, low quiescent current, and low dropout voltage. It is designed to provide a stable output voltage in various applications, particularly in battery-powered systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Integrated Circuits (ICs) - PMIC - Voltage Regulators - Linear |
| Package | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Output Configuration | Positive |
| Output Type | Adjustable (Fixed) |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 30V |
| Voltage - Output (Min/Fixed) | 3V |
| Voltage Dropout (Max) | 0.6V @ 100mA |
| Current - Output | 100mA |
| Current - Quiescent (Iq) | 75 µA (typical) |
| Current - Supply (Max) | 120µA ~ 14mA |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
Key Features
- High accuracy output voltage with tight initial tolerance (0.5% typical)
- Guaranteed 100 mA output current
- Extremely low quiescent current (75 µA typical)
- Low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA)
- Extremely tight load and line regulation (0.05% typical)
- Very low temperature coefficient
- Use as regulator or reference
- Needs minimum capacitance for stability
- Current and thermal limiting
- Stable with low-ESR output capacitors
- Error flag warns of output dropout (LP2951 versions only)
- Logic-controlled electronic shutdown
- Output programmable from 1.24 V to 29 V
Applications
- Battery-powered systems
- High-efficiency linear regulator applications
- Regulators with undervoltage shutdown
- Low dropout battery-powered regulators
- Snap-ON/Snap-OFF regulator applications
- CMOS RAM keep-alive applications
Q & A
- What is the maximum input voltage for the LP2951ACMM-3.0?
The maximum input voltage is 30V.
- What is the output current capability of the LP2951ACMM-3.0?
The LP2951ACMM-3.0 can provide up to 100 mA of output current.
- What is the typical quiescent current of the LP2951ACMM-3.0?
The typical quiescent current is 75 µA.
- What are the protection features of the LP2951ACMM-3.0?
The protection features include over current, over temperature, and short circuit protection.
- Can the output voltage of the LP2951ACMM-3.0 be programmed?
- What is the operating temperature range of the LP2951ACMM-3.0?
The operating temperature range is -40°C to 125°C.
- What type of package does the LP2951ACMM-3.0 come in?
The LP2951ACMM-3.0 comes in an 8-TSSOP or 8-MSOP package.
- Does the LP2951ACMM-3.0 have an error flag feature?
- Can the LP2951ACMM-3.0 be used as a regulator or reference?
- What is the minimum capacitance required for stability?
The minimum capacitance required for stability is dependent on the output current, but typically a 1 µF capacitor is sufficient.
