Input Voltage Range (Maximum Rating) : 1.7 to 5.5Ｖ (6.5 V)
Output Voltage Range : 1.
0 to 5.0 V
Output Voltage Accuracy : ±1.
0% (V
SET
≥ 1.8 V, Ta = 25℃)
Quiescent Current (
V
MODE
= "Low") : Typ. 17 μA
Quiescent Current (
V
MODE
= "High") : Typ. 1.5 mA
Output Noise Voltage (
10 Hz to 100 kHz) :
Typ. 3.7 µVrms (I
OUT
= 100 mA)
Typ. 20 µVrms (I
OUT
= 1 mA, V
MODE
= "Low")
Ripple Rejection (V
SET
= 2.8 V) :
Typ. 75dB@1kHz, Typ. 80dB@10kHz, Typ. 85dB@100kHz
Dropout Voltage :
T
yp. 0.10 V (I
OUT
= 500 mA, V
SET
= 2.8 V, NR1641GY)
Typ. 0.20 V (I
OUT
= 1000ｍA, V
SET
= 2.8 V, NR1641GY)
Thermal Shutdown Function : T
yp. 165℃
Slope of Output Voltage at Start-up :
200 μs/V or 500 μs/V
Start-up
Inrush Current Limit : Typ. 250 mA
Fast/Low Power automatic mode alternative function:
M
ODE pin "Low" Automatic alternative mode
MODE pin "High" Fixed to fast mode
Foldback Protection
1/5
C
MOS image sensor
Communication device such as RF module, VCO,
Clock generation device such as PLL
High accuracy ADC and DAC
Achieves low quiescent current, ultra-low noise, and high ripple rejection without the need for noise
reduction capacitors.
The slope of output voltage at start-up can be selected from 200 µs/V or 500 µs/V, making it easy to deal
with inrush current.
Selectable from 3 types of packages (ultra small size/high wattage/good balance)
KEYSPECIFICATIONS TYPICAL APPLICATIONS
APPLICATIONS
NR1641-EV-230314
WLCSP-6-P12
1.3 x 0.88 × 0.36
DFN1616-6-GY
1.6 x 1.6 × 0.4
HSON-6-GU
2.9 x 3.0 × 0.9
Under
Development
0.0001
0.001
0.01
0.1
1
10
0.01 0.1 1 10 100
Output Noise Spectral Density [µV/√Hz]
Frequency f [kHz]
系列6
系列7
系列8
系列9
V
MODE
＝ "Low", I
OUT
= 1mA
V
MODE
= "High, I
OUT
= 1mA
V
MODE
= "High, I
OUT
= 100mA
V
MODE
= "High, I
OUT
= 500mA
V
MODE
= "High, I
OUT
=1000mA
Under
Development
Output Noise Spectral Density
V
SET
= 3.3 V, V
IN
= V
SET
+ 1.0 V
1A Equipped with Low Power Mode
Ultra-Low Noise Low Dropout
Voltage Regulator
PACKAGE : Unit（mm）
Achieves low quiescent current, ultra-low noise, and high ripple rejection without the need for noise
reduction capacitors.
Our Solution
Want to reduce the quiescent current of the system during standby, so would like a low quiescent current and low
noise LDO that supports large currents for analog power supplies.
NR1641 is a 1A LDO with high PSRR and ultra-lo
w noise performance. Equipped with an automatic alternative
mode function that switches to low power mode at light load.
2/5
NR1641-EV-230314
Conventional LDO
VIN
VOUT
VCO
NR1641
VIN
VOUT
VCO
Conventional LDO
Output noise＝135μVrms
NR1641 class
Output noise＝8μVrms
※VCO： Voltage Controlled Oscillator
-70dBc/Hz
-85dBc/Hz
NR1641 is expected to
reduce VCO phase noise
and jitter thanks to its low
noise performance.
10
100
1000
10000
1 10 100 1000
Output Current IOUT[mA]
IOUT= 0A to 1A
GND Pin Current IGND[μA]
GND Pin Current vs Output Current
Ultra Low Noise ＆ High PSRR
Low Supply Current
IOUT= 1A to 0A
1A Equipped with Low Power Mode
Ultra-Low Noise Low Dropout
Voltage Regulator
General Issue