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PDF NCP4671 Data sheet ( Hoja de datos )

Número de pieza NCP4671
Descripción Dual Rail Ultra Low Dropout Linear Regulator
Fabricantes ON Semiconductor 
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No Preview Available ! NCP4671 Hoja de datos, Descripción, Manual

NCP4671
400 mA, Dual Rail Ultra Low
Dropout Linear Regulator
The NCP4671 is a CMOS Dual Supply Rail Linear Regulator
designed to provide very low output voltages. The Dual Rail
architecture which separates the power for the LDO control circuitry
(provided via the Vbias pin) from the main power path (Vin) offers
ultralow dropout performance, allowing the device to operate from
input voltages down to 0.9 V and to generate a fixed high accuracy
output voltage as low as 0.6 V.
The NCP4671 offers excellent transient response with very low
quiescent currents. The family is available in a variety of packages:
SC70, SOT23 and a small, ultra thin 1.2 x 1.2 x 0.4mm XDFN.
Features
Bias Supply Voltage Range : 2.4 V to 5.25 V (VOUT < 0.8 V)
Set VOUT + 1.6 V to 5.25 V (VOUT 0.8 V)
Power Input Voltage Range : 0.9 V to VBIAS (VOUT < 0.8 V)
Set VOUT + 0.1 V to VBIAS (VOUT 0.8 V)
Output Voltage Range: 0.6 to 1.5 V (available at 0.1 steps)
Very Low Dropout: 180 mV Typ. at 400 mA
Quiescent Current: 28 mA
Standby Current: 0.1 mA
±15 mV Output Voltage Accuracy (TA = 25°C)
High PSRR: 80 dB at 1 kHz (Ripple at VIN)
50 dB at 1 kHz (Ripple at VBIAS)
Current Fold Back Protection Typ. 120 mA
Available in XDFN, SC70, SOT23 Package
These are PbFree Devices
Typical Applications
Battery Powered Equipments
Portable Communication Equipments
Cameras, VCRs and Camcorders
VIN
DC/DC
converter
C1 C2
1m 1m
NCP4671x
VIN
VBIAS
VOUT
CE GND
VOUT
C3
2m 2
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MARKING
DIAGRAMS
SC70
CASE 419A
(In Development)
XXX
XMM
1
XDFN6
CASE 711AA
XX
MM
1
SOT235
CASE 1212
XXXMM
1
XX, XXX= Specific Device Code
M, MM = Date Code
A = Assembly Location
Y = Year
W = Work Week
G = PbFree Package
(*Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 20 of this data sheet.
Figure 1. Typical Application Schematic
© Semiconductor Components Industries, LLC, 2012
February, 2012 Rev. 2
1
Publication Order Number:
NCP4671/D

1 page




NCP4671 pdf
NCP4671
TYPICAL CHARACTERISTICS
0.7
VBIAS = 2.40 V
0.6
0.5 VIN = 0.79 V
0.4 2.40 V
0.3
0.2 1.10 V
0.1
0.0
0
100 200 300 400 500 600 700 800 900
IOUT, OUTPUT CURRENT (mA)
Figure 3. Output Voltage vs. Output Current
0.6 V Version (TA = 255C)
0.7
VBIAS = 3.60 V
0.6
0.5
VIN = 0.79 V
3.60 V
0.4
0.3
0.2
1.10 V
0.1
0.0
0
100 200 300 400 500 600 700 800
IOUT, OUTPUT CURRENT (mA)
Figure 4. Output Voltage vs. Output Current
0.6 V Version (TA = 255C)
900
0.7
VBIAS = 5.25 V
0.6
0.5 VIN = 0.79 V
0.4
0.3
0.2 5.25 V 1.10 V
0.1
0.0
0 100 200 300 400 500 600 700 800 900
IOUT, OUTPUT CURRENT (mA)
Figure 5. Output Voltage vs. Output Current
0.6 V Version (TA = 255C)
1.2
VBIAS = 3.60 V
1.0
0.8 VIN = 1.22 V
0.6 1.50 V
1.2
VBIAS = 2.60 V
1.0
0.8 VIN = 1.22 V
1.50 V
0.6
2.60 V
0.4
0.2
0.0
0 100 200 300 400 500 600 700 800 900
IOUT, OUTPUT CURRENT (mA)
Figure 6. Output Voltage vs. Output Current
1.0 V Version (TA = 255C)
1.2
VBIAS = 5.25 V
1.0
0.8 VIN = 1.22 V
1.50 V
0.6
0.4
3.60 V
0.4
5.25 V
0.2 0.2
0.0
0
100 200 300 400 500 600 700 800 900
IOUT, OUTPUT CURRENT (mA)
Figure 7. Output Voltage vs. Output Current
1.0 V Version (TA = 255C)
0.0
0
100 200 300 400 500 600 700 800
IOUT, OUTPUT CURRENT (mA)
Figure 8. Output Voltage vs. Output Current
1.0 V Version (TA = 255C)
900
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NCP4671 arduino
NCP4671
TYPICAL CHARACTERISTICS
100
80
30 mA
60
IOUT = 1 mA
40
20
VIN = 1.1 V, CIN = 2.2 mF,
VBIAS = 3.6 V + 200 mVPP modulation
0
100 1k
10k 100k
150 mA
1M
10M
FREQUENCY (Hz)
Figure 39. PSRR vs. Frequency 0.6 V Version
100
80 30 mA
60
IOUT = 1 mA
40
20
VIN = 1.5 V, CIN = 2.2 mF,
VBIAS = 3.6 V + 200 mVPP modulation
0
100 1k
10k 100k
150 mA
1M 10M
FREQUENCY (Hz)
Figure 40. PSRR vs. Frequency 1.0 V Version
100
90 30 mA
80
70
60 IOUT = 1 mA
50
40
30
20
100100VBIAS
VIN =
= 3.6
1k
2.0
V+
V, CIN = 2.2 mF,
200 mVPP modulation
10k 100k
150 mA
1M 10M
FREQUENCY (Hz)
Figure 41. PSRR vs. Frequency 1.5 V Version
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