Datasheet
NR1641 series
1A Equipped with Low Power Mode
Ultra-Low Noise Low Dropout Voltage Regulator
- 1 -
Ver.1.1
FEATURES GENERAL DESCRIPTION
Input Voltage Range (Maximum Rating):
1.7 V to 5.5 V (6.5 V)
Output Voltage Range: 1.0 V to 5.0 V
Output Voltage Accuracy:
± 1.0% (V
SET
≥ 1.8 V, T
a
= 25 °C)
Output Current: 1.0 A
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: Typ. 75 dB (f = 1 kHz, V
SET
= 2.8 V)
Typ. 80 dB (f = 10 kHz, V
SET
= 2.8 V)
Typ. 85 dB (f = 100 kHz, V
SET
= 2.8 V)
Dropout Voltage:
Typ. 0.10 V (I
OUT
= 500 mA, V
SET
= 2.8 V, NR1641GY)
Typ. 0.20 V (I
OUT
= 1000 mA, V
SET
= 2.8 V, NR1641GY)
Thermal Shutdown Function: Typ. 165 °C
Slope of Output Voltage at Start-up:
200 µs/V or 500 µs/V
Start-up Inrush Current Limit: Typ. 250 mA
Foldback Protection
Fast / Low Power automatic mode alternative function:
MODE pin "Low" Automatic alternative mode
MODE pin "High" Fixed to fast mode
Ceramic Capacitors are Recommended:
C
IN
, C
OUT
10 µF or greater
(Built-in filter element eliminates the need
for a capacitor for noise reduction)
The NR1641 series are CMOS based low dropout
voltage regulator that achieves both ultra-low output
noise, high ripple rejection, high-speed response
characteristics, and low quiescent current.
The MODE pin input voltage can be used to select
between the automatic alternative mode and the fixed
fast mode. The automatic alternative mode changes
the internal mode between low power mode and the
fast mode according to the load current.
In addition, Slope of Output Voltage at Start-up can be
selected from 200 µs/V or 500 µs/V.
By this option, depending on the capacitance
connected to the output pin, the inrush current limit
can be changed.
Since the NR1640 has low quiescent current, low
noise, and high ripple rejection, it is suitable for IoT
devices, battery-powered devices, and the noise
sensitive analog application.
CMOS image sensor
Communication device such as RF module,
Clock generation device such as PLL or VCO
High accuracy ADC and DAC
PACKAGE (unit: mm)
V
SET
= 3.3 V, V
IN
= V
SET
+ 1.0 V,
C
IN
= 10 μF, C
OUT
= 10 μF
APPLICATIONS
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
DFN1616-6-GY
1.6 x 1.6 x 0.4
WLCSP-6-P12
1.3 x 0.88 x 0.36
(Under Development)
HSON-6-GU
2.9 x 3.0 x 0.9
(Under Development)
OUTPUT NOISE SPECTRAL DENSITY
Datasheet
NR1641 series
- 2 -
Ver.1.1
■ PRODUCT NAME INFORMATION
NR1641
aa
bbb
c
dd
e
Composition
Item
Description
aa Package Code
GY: DFN1616-6-GY
ZA: WLCSP-6-P12
GU: HSON-6-GU
bbb Output Voltage
Output voltage (V
SET
).
The lineup ranges from 1.0 V (100) to 5.0 V (500).
c Version
Slope of output voltage at start-up and with or without discharge function. See
below for details.
dd
Packing
Taping direction. Please refer to the packaging specifications.
e Grade
Indicates the quality grade.
S: Consumer
Version
c
Slope of Output Voltage at Start-up
Discharge Function
A 200 µs/V
✓
B 500 µs/V
✓
C
200 µs/V
-
D 500 µs/V -
Grade
e
Application
Operating Temperature Range
Test Temperature
S
Consumer
−40 °C to 85 °C
25 °C
■ ORDER INFORMATION
PRODUCT NAME PACKAGE RoHS
HALOGEN-
FREE
PLATING
COMPOSITION
WEIGHT
(mg)
QUANTITY PER REEL
(pcs)
NR1641GY bbb c E4S DFN1616-6-GY Yes Yes NiPdAu 3.08 5000
NR1641ZA bbb c E2S WLCSP-6-P12 Yes Yes Sn3Ag0.5Cu TBD 5000
NR1641GU bbb c E4S HSON-6-GU Yes Yes Sn TBD 3000
* NR1641ZA, NR1641GU are under development.
Please contact us if you require a voltage other than the existing fixed-output product.
Refer to “MARKING SPECIFICATION“ for details.