NR1644 Series
Low Noise High RR Low Dropout 2A 0.4V Output Voltage Regulator
- Download Datasheet
- Point
-
Provides at-a-glance product features, functions, and concepts.
- ECAD Model: Learn more
-
Description
The NR1644 series is CMOS based low-dropout voltage regulator. This device is characterized by ultra-low output noise, high ripple rejection, high-speed response characteristics, and low current quiescent current. By automatic alternative between Fast-mode and Low-power-mode according to the load current, the current consumption at light loads is reduced. For responsive applications, the Fast-mode fixed version is available. The NR1644 series has the Soft-start function that allows the rise time to be set by changing the capacitance of the external capacitor (CNR). NR1644 achieves the low current consumption, ultralow output noise, and high ripple rejection, so it is suitable for applications including IoT devices, batterypowered devices, and analog components that require attention to noise.
Spec
| Standard | |
|---|---|
| Input Voltage Range | VIN = VSET + VDO to VBIAS (Maximum Ratings 6.5 V) VBIAS = 2.4 V to 5.5 V (Maximum Ratings 6.5 V) |
| Operating Temperature Range | TJ = -40°C to 125°C |
| Supply Current | Typ. 75 µA |
| Standby Current | Typ. 0.01 µA |
| Output Voltage Range | 0.4 V to 1.5 V (0.1 V step) |
| Output Voltage Accuracy | ±1.0% (Ta = 25°C) |
| Dropout Voltage | Typ. 90 mV (IOUT = 1 A) Typ. 180 mV (IOUT = 2 A) |
| Output Current | 2000 mA |
| Ripple Rejection | Typ. 110 dB (f = 1 kHz, IOUT = 1 A) Typ. 50 dB (f = 1 MHz, IOUT = 1 A) |
| Package | DFN2020-8-GA |
Protections / Functions
| TSD | Reverse | Current Limit | ISC | Inrush | ECO mode | Auto Discharge | External Driver | PGOOD | Soft Start |
|---|---|---|---|---|---|---|---|---|---|
 |
|
|
|
|
|
|
|
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 |
Technical Documents
-
SPICE model download
You can download the product's SPICE model. Login/registration to myNISD is required to download.
-
Typical Application
-
Typical Characteristics
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| NR1644GAxxxxE4S |
|
DFN2020-8-GA | See datasheet | NR1644GAS |
- 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.
FAQ
Buy / Contact
-
Purchase, Request for samples and documentsSales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
-
Available from 1 piece!Our electronic device products are available through our authorized online distributors.
-
Technical Support