NR1640 Series
200mA Ultra-low Noise Voltage Regulator
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Description
The NR1640 is a CMOS-based ultra-low noise, high PSRR voltage regulator featuring 200 mA output current and 5.5 V maximum input voltage. With noise characteristics of 6 μVrms and high ripple rejection of 80 dB or more @100 kHz, high quality power can be supplied, ideal for high precision sensing systems where noise is an issue.
The slope of output voltage at startup can be selected from 4 types. These options will meet the demand of suppression of inrush current and start-up slope requirement. In addition, the auto discharge function option will contribute to make the output shutdown fast to discharge output capacitance with internal discharge FET.
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Spec
Industrial Automotive Input Voltage Range 2.7 V to 5.5 V (6.5 V) Operating Temperature Range -40°C to 125°C (150°C) Supply Current Typ. 350 µA Standby Current Typ. 0.1 µA Output Voltage Range 2.5 V to 4.8 V Output Voltage Accuracy ±1.0% (Ta = 25°C) Dropout Voltage Typ. 130 mV
(IOUT = 200 mA, VSET = 3.3 V)Ripple Rejection Typ. 80 dB (f = 1 kHz)
Typ. 80 dB (f = 100 kHz)Package SOT-23-5-DC AEC-Q100 AEC-Q100 grade 1 Protections / Functions
TSD Reverse Current Limit ISC Inrush Constant Slope ECO mode Auto Discharge External Driver PGOOD 
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Technical
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SPICE model download
You can download the product's SPICE model. Login/registration to myNISD is required to download.
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Typical Application
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PSRR Typical Characteristics
VIN = 5V, VSET = 3.3V
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Quality &
PackagesProduct Name Compatibility Package Marking Reliability NR1640DCxxxxE1D SOT-23-5-DC See datasheet NR1640DCD NR1640DCxxxxE1P SOT-23-5-DC See datasheet NR1640DCP NR1640DCxxxxE1Q SOT-23-5-DC See datasheet NR1640DCQ - Refer to the datasheets for the details on the product.
- The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
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Sample / Buy
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Buy Online
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Buy, Request for Samples, Request for Information Materials
Authorized Distributors
Please contact your local distributors for any sales-related inquiry such as price, stock, delivery, etc.
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Download Datasheet
Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| Reverse Current Protection | Reverse Current Protection |
| Current Limit | Overcurrent Protection |
| ISC | Short Current Protection |
| Inrush Current Limit | Inrush Current Protection |
| Constant Slope | Constant Slope Function |
| ECO mode | ECO Function |
| Auto Discharge | Auto Discharge Function |
| External Driver | External Output Driver Transistor |