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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
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MARKING
DIAGRAM
8
8
1
SSOP−8
G SUFFIX
CASE 487
xxx
xyy
1
xxxx = Product Code
yy = Lot Number
PIN ASSIGNMENT
•
•
•
•
•
•
•
•
•
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 Packages are Available
V
OUT1
V
OUT2
V
OUT3
GND
1
2
3
4
(Top View)
8
7
6
5
V
DD
CE1
CE2
CE3
SSOP−8
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 22 of this data sheet.
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
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 22 of this data sheet.
©
Semiconductor Components Industries, LLC, 2005
1
September, 2005 − Rev. 6
Publication Order Number:
NCP4523/D
NCP4523
PIN DESCRIPTION
Pin Number
NCP4523G
SSOP−8
1
2
3
4
5
6
7
8
Symbol
V
OUT1
V
OUT2
V
OUT3
GND
CE3
CE2
CE1
V
DD
Output Pin
Output Pin
Output Pin
Ground Pin
Chip Enable Pin
Chip Enable Pin
Chip Enable Pin
Input Pin
Description
ABSOLUTE MAXIMUM RATINGS
Rating
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current (V
OUT1
)
Output Current (V
OUT2
)
Output Current (V
OUT3
)
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Electrostatic Discharge Sensitivity (ESD)
Human Body Model (HBM)
Machine Model (MM)
Symbol
V
IN
CE
V
OUT
I
OUT1
I
OUT2
I
OUT3
P
D
T
opt
T
stg
ESD
2000
200
Value
7.0
−0.3
X
V
IN
+ 0.3
−0.3
X
V
IN
+ 0.3
200
100
100
300
−40
X
85
−55
X
125
Unit
V
V
V
mA
mA
mA
mW
°C
°C
V
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
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NCP4523
ELECTRICAL CHARACTERISTICS
VR1
(T
opt
= 25°C)
Characteristics
Output Voltage
Output Current
Load Regulation
Dropout Voltage
Supply Current
Supply Current (Standby)
Line Regulation
Ripple Rejection
Input Voltage
Output Voltage Temperature
Coefficient
Short Current Limit
CE Pull−down Resistance
CE Input Voltage “H’’
CE Input Voltage “L’’
Output Noise
Conditions
V
IN
− V
OUT
= 1.0 V
1.0 mA
v
I
OUT
v
30 mA
V
IN
− V
OUT
= 1.0 V
V
IN
− V
OUT
= 1.0 V
1.0 mA
v
I
OUT
v
80 mA
Refer to Electrical Characteristic
by Output Voltage (VR1)
V
IN
− V
OUT
= 1.0 V
V
IN
− V
OUT
= 1.0 V
V
CE
= GND
V
OUT
+ 0.5 V
v
V
IN
v
6.0 V
I
OUT
= 30 mA
f = 1.0 kHz, sinusoidal 0.5 Vp−p
V
IN
− V
OUT
= 1.0 V
−
I
OUT
= 50 mA
−40°C
v
T
opt
v
85°C
V
OUT
= 0 V
−
−
−
BW = 10 Hz − 100 kHz
Symbol
V
OUT
I
OUT
DV
OUT
/DI
OUT
V
DIF
I
SS
Istandby
DV
OUT
/DV
IN
RR
V
IN
DV
OUT
/DT
I
LIM
R
DN
V
CEH
V
CEL
en
Min
0.98
150
−
−
−
−
−
−
−
−
−
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
V
IN
0.25
−
Unit
V
mA
mV
−
mA
mA
%/V
dB
V
ppm/
°C
mA
MW
V
V
mVrms
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE (VR1)
Dropout Voltage V
DIF
(V)
Condition
Typ
0.35
I
OUT
= 150 mA
0.30
0.22
Max
0.55
0.45
0.35
Output Voltage
V
OUT
(V)
2.0
v
V
OUT
v
2.4
2.5
v
V
OUT
v
2.7
2.8
v
V
OUT
v
3.3
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NCP4523
ELECTRICAL CHARACTERISTICS
VR2
(T
opt
= 25°C)
Characteristics
Output Voltage
Output Current
Load Regulation
Dropout Voltage
Supply Current
Supply Current (Standby)
Line Regulation
Ripple Rejection
Input Voltage
Output Voltage Temperature
Coefficient
Short Current Limit
CE Pull−down Resistance
CE Input Voltage “H’’
CE Input Voltage “L’’
Output Noise
Conditions
V
IN
− V
OUT
= 1.0 V
1.0 mA
v
I
OUT
v
30 mA
V
IN
− V
OUT
= 1.0 V
V
IN
− V
OUT
= 1.0 V
1.0 mA
v
I
OUT
v
50 mA
Refer to Electrical Characteristic
by Output Voltage (VR2)
V
IN
− V
OUT
= 1.0 V
V
IN
− V
OUT
= 1.0 V
V
CE
= GND
V
OUT
+ 0.5 V
v
V
IN
v
6.0 V
I
v
= 30 mA
f = 1.0 kHz, sinusoidal 0.5 Vp−p
V
IN
− V
OUT
= 1.0 V
−
I
OUT
= 30 mA
−40°C
v
T
opt
v
85°C
V
OUT
= 0 V
−
−
−
BW = 10 Hz − 100 kHz
Symbol
V
OUT
I
OUT
DV
OUT
/DI
OUT
V
DIF
I
SS
Istandby
DV
OUT
/DV
IN
RR
V
IN
DV
OUT
/DT
I
LIM
R
DN
V
CEH
V
CEL
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
V
IN
0.25
−
Unit
V
mA
mV
−
mA
mA
V
dB
V
ppm/
°C
mA
MW
V
V
mVrms
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE (VR2)
Dropout Voltage V
DIF
(V)
Condition
Typ
0.22
I
OUT
= 80 mA
0.20
0.16
Max
0.38
0.38
0.24
Output Voltage
V
OUT
(V)
2.0
v
V
OUT
v
2.4
2.5
v
V
OUT
v
2.7
2.8
v
V
OUT
v
3.3
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