MC33761: Switching Voltage Regulator, LDO, 800 mA, Ultra Low-Noise, with 1.0 V On/Off Control

The MC33761 is a low dropout (LDO) switching voltage regulator featuring excellent noise performances. Thanks to its innovative design, the circuit reaches an impressive 40uVRMS noise level without an external bypass capacitor. Housed in a small SOT-23 5 leads-like package, this LDO represents the ideal designer's choice when space and noise are at premium.The absence of external bandgap capacitor accelerates the response time to a wake-up signal and keeps it within 40us (in repetitive mode), making the MC33761 as a natural candidate for portable applications.The MC33761 low dropout (LDO) linear voltage regulator also hosts a novel architecture which prevents excessive undershoots in the presence of fast transient bursts, as in any bursting systems.Finally, with a static line regulation better than -75dB, it naturally shields the downstream electronics against choppy lines.

Features
  • Ultra Low-Noise: 150 nV/sq. root Hz @ 100 Hz, 40mVRMS 100 Hz - 100 kHz typical, Iout = 60 mA, Co=1.0mF
  • Fast Response Time from OFF to ON: 40ms Typical at a 200 Hz Repetition Rate
  • Ready for 1.0 V Platforms: ON with a 900 mV High Level
  • Nominal Output Current of 80 mA with a 100 mA Peak Capability
  • Typical Dropout of 90 mV @ 30 mA, 160 mV @ 80 mA
  • Ripple Rejection: 70 dB @ 1.0 kHz
  • 1.5% Output Precision @ 25°C
  • Thermal Shutdown
  • Vout Available at 2.5 V, 2.8 V, 2.9V, 3.0 V, 5.0V
  • Operating Range from -40 to +85°C
  • Dual Version is Available as MC33762
  • Pb-Free Package May be Available. The G-Suffix Denotes a Pb-Free Lead Finish.
Applications
  • Noise sensitive circuits: VCOs RF stages etc.
  • Bursting systems (TDMA phones)
  • All battery operated devices
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Switching Voltage Regulator, LDO, 800 mA, Ultra Low-Noise, with 1.0 V On/Off ControlMC33761/D (402.0kB)8
Package Drawings (1)
Document TitleDocument ID/SizeRevision
TSOP-5483 (32.5kB)M
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
MC33761SNT1-025GActivePb-free Halide freeTSOP-5 / SOT-23-54831Tape and Reel3000$0.3333
MC33761SNT1-028GActivePb-free Halide freeTSOP-5 / SOT-23-54831Tape and Reel3000Contact BDTIC
MC33761SNT1-029GActivePb-free Halide freeTSOP-5 / SOT-23-54831Tape and Reel3000$0.3333
MC33761SNT1-030GActivePb-free Halide freeTSOP-5 / SOT-23-54831Tape and Reel3000$0.3333
MC33761SNT1-050GActivePb-free Halide freeTSOP-5 / SOT-23-54831Tape and Reel3000$0.3333
Specifications
ProductOutputPolarityVO (V)IO Typ (A)VI Max (V)VDO Typ (V)Iq Typ (mA)PSRR (dB)Noise (µVrms)
MC33761SNT1-025GSinglePositive2.50.08120.160.187035
MC33761SNT1-028GSinglePositive2.80.08120.160.187035
MC33761SNT1-029GSinglePositive2.90.08120.160.187035
MC33761SNT1-030GSinglePositive30.08120.160.187035
MC33761SNT1-050GSinglePositive50.08120.160.187035
Switching Voltage Regulator, LDO, 800 mA, Ultra Low-Noise, with 1.0 V On/Off Control (402.0kB) MC33761
TSOP-5 NUP4004M5