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.
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Applications- Noise sensitive circuits: VCOs RF stages etc.
- Bursting systems (TDMA phones)
- All battery operated devices
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Data Sheets (1)
Package Drawings (1)
| Document Title | Document ID/Size | Revision |
|---|
| TSOP-5 | 483 (32.5kB) | M |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| MC33761SNT1-025G | Active | Pb-free
Halide free | TSOP-5 / SOT-23-5 | 483 | 1 | Tape and Reel | 3000 | $0.3333 |
| MC33761SNT1-028G | Active | Pb-free
Halide free | TSOP-5 / SOT-23-5 | 483 | 1 | Tape and Reel | 3000 | Contact BDTIC |
| MC33761SNT1-029G | Active | Pb-free
Halide free | TSOP-5 / SOT-23-5 | 483 | 1 | Tape and Reel | 3000 | $0.3333 |
| MC33761SNT1-030G | Active | Pb-free
Halide free | TSOP-5 / SOT-23-5 | 483 | 1 | Tape and Reel | 3000 | $0.3333 |
| MC33761SNT1-050G | Active | Pb-free
Halide free | TSOP-5 / SOT-23-5 | 483 | 1 | Tape and Reel | 3000 | $0.3333 |
Specifications
| Product | Output | Polarity | VO (V) | IO Typ (A) | VI Max (V) | VDO Typ (V) | Iq Typ (mA) | PSRR (dB) | Noise (µVrms) |
|---|
| MC33761SNT1-025G | Single | Positive | 2.5 | 0.08 | 12 | 0.16 | 0.18 | 70 | 35 |
| MC33761SNT1-028G | Single | Positive | 2.8 | 0.08 | 12 | 0.16 | 0.18 | 70 | 35 |
| MC33761SNT1-029G | Single | Positive | 2.9 | 0.08 | 12 | 0.16 | 0.18 | 70 | 35 |
| MC33761SNT1-030G | Single | Positive | 3 | 0.08 | 12 | 0.16 | 0.18 | 70 | 35 |
| MC33761SNT1-050G | Single | Positive | 5 | 0.08 | 12 | 0.16 | 0.18 | 70 | 35 |
