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PDF NCP4523 Data sheet ( Hoja de datos )
| Número de pieza | NCP4523 | |
| Descripción | CMOS 3CH-LDOs | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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NCP4523
CMOS 3CH−LDOs
for RF Unit
The NCP4523 Series are multi voltage regulator ICs with high
output voltage accuracy, extremely low supply current, low noise, low
ON−resistance and high ripple rejection by CMOS process. The
NCP4523 Series contain three voltage regulators. Each of these
voltage regulators in the NCP4523 Series consists of a voltage
reference unit, an error amplifier, resistors for setting output voltage, a
current limit circuit and a chip enable circuit.
The chip enable function contributes to prolong battery life. Further,
regulators in the NCP4523 Series are with low dropout voltage,
excellent load transient response and line transient response, thus the
NCP4523 series are very suitable for the power supply for hand−held
communication equipment.
The output voltage of each regulator is fixed with high accuracy by
laser trim.
Since the package for these ICs is SSOP−8, high density mounting
of the ICs on boards is possible.
Features
• Ultra−Low Supply Current
• Low Standby Current
• Low Dropout Voltage
• High Ripple Rejection, Typical 70 dB (f = 1.0 kHz)
• High Output Voltage Accuracy, "2.0%
• Excellent Load Transient Response and Line Transient Response
• Small Package 8−Pin SSOP
• Maximum Input Voltage 6.0 V
• Pb−Free Package is Available
Applications
• Power Source for Cellular Phones such as GSM, CDMA and
Personal Handy−Phone System
• Power Source for Electrical Appliances such as Cameras, VCRs,
Camcorders, etc.
• Power Source for Battery−Powered Equipment
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8
1
SSOP−8
G SUFFIX
CASE 487
MARKING
DIAGRAM
8
xxx
xyy
1
xxxx = Product Code
yy = Lot Number
PIN ASSIGNMENT
VOUT1 1
VOUT2 2
VOUT3 3
GND 4
8 VDD
7 CE1
6 CE2
(Top View)
SSOP−8
5 CE3
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 22 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 22 of this data sheet.
© Semiconductor Components Industries, LLC, 2004
December, 2004 − Rev. 4
1
Publication Order Number:
NCP4523/D
Free Datasheet http://www.datasheet4u.com/
1 page  
NCP4523
ELECTRICAL CHARACTERISTICS
VR3 (Topt = 25°C)
Characteristics
Conditions
Output Voltage
VIN − VOUT = 1.0 V
1.0 mA v 30 mA
Output Current
Load Regulation
Dropout Voltage
VIN − VOUT = 1.0 V
VIN − VOUT = 1.0 V
1.0 mA v IOUT v 50 mA
Refer to Electrical Characteristic
by Dropout Voltage (VR3)
Supply Current
Supply Current (Standby)
Line Regulation
VOUT + 0.5 V v VIN v 6.0 V
IOUT = 30 mA
f = 1.0 kHz, sinusoidal 0.5 Vp−p
VIN − VOUT = 1.0 V
−
Ripple Rejection
Input Voltage
Output Voltage Temperature
Coefficient
IOUT = 30 mA
−40°C v Topt v 85°C
VOUT = 0 V
−
Short Current Limit
BW = 10 Hz − 100 kHz
CE Pull−down Resistance
−
CE Input Voltage “H’’
−
CE Input Voltage “L’’
−
Output Noise
−
Symbol
VOUT
IOUT
DVOUT/DIOUT
VDIF
ISS
Istandby
DVOUT/DVIN
RR
VIN
DVOUT/DT
ILIM
RDN
VCEH
VCEL
en
Min
0.98
80
−
−
−
−
−
−
−
−
−
2.5
1.5
0.00
−
Typ
−
−
12
−
70
0.1
0.05
70
−
"100
50
5.0
−
−
60
Max
1.02
−
40
−
120
1.0
0.20
−
6.0
−
−
10
VIN
0.25
−
Unit
V
mA
mV
−
µA
µA
%/V
dB
V
ppm/
°C
mA
MW
V
V
µVrms
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE (VR3)
Output Voltage
VOUT (V)
2.0 v VOUT v 2.4
2.5 v VOUT v 2.7
2.8 v VOUT v 3.3
Dropout Voltage VDIF (V)
Condition
Typ Max
0.24 0.38
IOUT = 80 mA
0.22 0.28
0.16 0.24
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Free Datasheet http://www.datasheet4u.com/
5 Page 
NCP4523
80
70
60 100 Hz 10 kHz
50
1 kHz
40
30
20
10
0
3.1
VR1
IOUT = 10 mA
COUT = Tantal 2.2 µF
VOUT = 3.0 V
3.2 3.3 3.4
VIN, INPUT VOLTAGE (V)
3.5
Figure 15. Ripple Rejection vs. Input Voltage
(DC Bias)
80
VR1
70 IOUT = 50 mA
COUT = Tantal 2.2 µF
60 VOUT = 3.0 V
50 100 Hz
40
10 kHz
30 1 kHz
20
10
0
3.1 3.2 3.3 3.4 3.5
VIN, INPUT VOLTAGE (V)
Figure 16. Ripple Rejection vs. Input Voltage
(DC Bias)
80
70 100 Hz
60 10 kHz
50
40 1 kHz
30
20
10
0
3.1
VR2
IOUT = 10 mA
COUT = Tantal 2.2 µF
VOUT = 3.0 V
3.2 3.3 3.4
VIN, INPUT VOLTAGE (V)
3.5
Figure 17. Ripple Rejection vs. Input Voltage
(DC Bias)
80
70 100 Hz
60 10 kHz
50 1 kHz
40
30
20
10
0
3.1
VR3
IOUT = 10 mA
COUT = Tantal 2.2 µF
VOUT = 3.0 V
3.2 3.3 3.4
VIN, INPUT VOLTAGE (V)
3.5
Figure 19. Ripple Rejection vs. Input Voltage
(DC Bias)
80
VR2
70 IOUT = 50 mA
60
COUT = Tantal 2.2 µF
VOUT = 3.0 V
50 100 Hz
40
10 kHz
30
1 kHz
20
10
0
3.1 3.2 3.3 3.4 3.5
VIN, INPUT VOLTAGE (V)
Figure 18. Ripple Rejection vs. Input Voltage
(DC Bias)
80
VR3
70 IOUT = 50 mA
COUT = Tantal 2.2 µF
60 VOUT = 3.0 V
50
40
30
20
100 Hz
10 kHz
1 kHz
10
0
3.1 3.2 3.3 3.4 3.5
VIN, INPUT VOLTAGE (V)
Figure 20. Ripple Rejection vs. Input Voltage
(DC Bias)
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Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet NCP4523.PDF ] | |
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