LP2951CD-3.3
onsemiUnited States

LP2951CD-3.3

ObsoleteVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsSOIC-8

IC REG LINEAR 3.3V 100MA 8SOIC

LP2951CD-3.3 is a 3.3V fixed output, 100mA low dropout linear regulator in SOIC-8 package, featuring low quiescent current, error output, and shutdown function, suitable for battery-powered devices.Checked against the datasheet

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Technical parameters

Key specs

Output voltage3.267 ~ 3.333 VMax 3.333 V (Vin=4.3 V，IO=100 μA，TA=25°C)，Max 3.366 V (Vin=4.3 to 30 V，IO=100 μA to 100 mA，TA=-40 to +125°C)
Output current100 mAMax
Input voltage4.3 ~ 30 V
Dropout voltage80 mVMax · Max 80 mV (IO=100 μA)，Max 450 mV (IO=100 mA)
Quiescent current75 µATyp · Max 120 μA (IO=100 μA)，Max 12 mA (IO=100 mA)

Datasheet-verified parameters

19 items
ParameterValue and test conditionsSource
Output Voltage3.3 V (Nominal); Min 3.267 V, Typ 3.300 V, Max 3.333 V (Vin=4.3 V, IO=100 μA, TA=25°C); Min 3.234 V, Max 3.366 V (Vin=4.3 to 30 V, IO=100 μA to 100 mA, TA=-40 to +125°C)
Output Current100 mA (Maximum capability mentioned in description); Test conditions up to 100 mA
Input Voltage Range4.3 V to 30 V (Recommended operating range for 3.3V version based on electrical characteristics test conditions)
Dropout VoltageTyp 30 mV, Max 80 mV (IO=100 μA); Typ 350 mV, Max 450 mV (IO=100 mA)
Quiescent CurrentTyp 75 μA (General description); Typ 93 μA, Max 120 μA (IO=100 μA); Typ 4.0 mA, Max 12 mA (IO=100 mA)
PackageSOIC-8 (Pb-Free)
Operating Ambient Temperature Range-40°C to +125°C
GradeCommercial (LP2951 prefix); NCV2951 prefix is AEC-Q100 Qualified
RoHS CompliantYes (Pb-Free and RoHS Compliant)
Line RegulationTyp 0.08 %, Max 0.20 % (Vin = VO(nom) + 1.0 V to 30 V)
Load RegulationTyp 0.13 %, Max 0.20 % (IO = 100 μA to 100 mA)
Current LimitTyp 220 mA, Max 300 mA (VO Shorted to Ground)
Output Noise VoltageTyp 126 μVrms (CL = 1.0 μF, 10 Hz to 100 kHz); Typ 56 μVrms (CL = 100 μF, 10 Hz to 100 kHz)
Thermal RegulationTyp 0.05 %/W, Max 0.20 %/W
Protection FeaturesInternal Current and Thermal Limiting
ESD ProtectionHBM 2000 V Class 2; MM 200 V Class B; CDM 2000 V Class IV
Output Capacitor Requirement1.0 μF (Minimum for stability at 100 mA); 0.33 μF (<10 mA); 0.1 μF (<1.0 mA)
Shutdown InputLogic Level Shutdown Input
Error OutputSignals an Out of Regulation Condition
All parameters (22)ExpandCollapse
Power
Current - Output100mA
Current - Quiescent (Iq)120 µA
Current - Supply (Max)12 mA
Voltage Dropout (Max)0.45V @ 100mA
Voltage - Input (Max)30V
Voltage - Output (Max)-
Voltage - Output (Min/Fixed)3.3V
AC and DC characteristics
PSRR-
Environment and package
Mounting TypeSurface Mount
Operating Temperature-40°C ~ 125°C
PackageTube
Package / Case8-SOIC (0.154", 3.90mm Width)
Supplier Device Package8-SOIC
Other
Base Product NumberLP2951
Control Features-
Mfronsemi
Number of Regulators1
Output ConfigurationPositive
Output TypeFixed
Product StatusObsolete
Protection FeaturesOver Current, Over Temperature
Series-

Pinout and package

PIN CONNECTIONS (Top View)
PIN CONNECTIONS (Top View)
Package: SOIC-8 (Pb-Free)
PinNameFunctionSource
1Output
2Sense
3Shutdown
4GND
5Error Output
6VOTap
7Feedback
8Input

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DatasheetDatasheet · 552.5 KB · 2026-10-29
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