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NCP4561

ON Semiconductor
Part Number NCP4561
Manufacturer ON Semiconductor
Description ULTRA LOW-NOISE LOW DROPOUT VOLTAGE REGULATOR
Published Nov 7, 2013
Detailed Description NCP4561 Ultra Low−Noise Low Dropout Voltage Regulator with 1.0 V ON/OFF Control The NCP4561 is a Low DropOut (LDO) regu...
Datasheet PDF File NCP4561 PDF File

NCP4561
NCP4561

Overview
NCP4561 Ultra Low−Noise Low Dropout Voltage Regulator with 1.
0 V ON/OFF Control The NCP4561 is a Low DropOut (LDO) regulator featuring excellent noise performances.
Thanks to its innovative concept, the circuit reaches an incredible 40 mVRMS noise level without an external bypass capacitor.
Housed in a small SOT−23 5 leads−like package, it represents the ideal designer’s choice when space and noise are at premium.
The absence of external bandgap capacitor unleashes the response time to a wake−up signal and makes it stay within 40 ms (in repetitive mode), pushing the NCP4561 as a natural candidate in portable applications.
The NCP4561 also hosts a novel architecture which prevents excessive undershoots when the regulator is the seat of fast transient bursts, as in any bursting systems.
Finally, with a static line regulation better than −75 dB, it naturally shields the downstream electronics against choppy lines.
Features • Ultra Low−Noise: 150 nV/√Hz @ 100 Hz, 40 mVRMS 100 Hz − 100 kHz Typical, Iout = 60 mA, Co = 1.
0 mF • Fast Response Time from OFF to ON: 40 ms 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 Applications • Noise Sensitive Circuits: VCOs RF Stages, etc.
• Bursting Systems (TDMA Phones) • All Battery Operated Devices ON/ OFF 1 On/Off NC 3 Band Gap Reference Thermal Shutdown GND *Current Limit *Antisaturation Protection *Load Transient Improvement 2 Figure 1.
Simplified Block Diagram 5 Vin 4 Vout http://onsemi.
com 5 1 TSOP−5 SN SUFFIX CASE 483 PIN CONNECTIONS AND MARKING DIAGRAM P28YW ON/OFF 1 GND 2 5 Vin NC 3 4 Vout (Top View) P28 = Device Code Y = Year W = Work Week ORDERING INFORMATION Device Voltage Output* Shipping NCP4561SN28T1 2.
8 V 3000/Tape & Reel * Contact your ON Semiconduc...


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