2001,2002
BIPOLAR ANALOG INTEGRATED CIRCUIT
PC3018, 3025
LOW-SATURATION STABILIZED POWER SUPPLY WITH ON/OFF FUNCTION (1 A OUTPUT)
DATA SHEET
Document No. G15506EJ2V0DS00 (2nd edition)
Date Published July 2002 NS CP(K)
Printed in Japan
The mark
5
shows major revised points.
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
DESCRIPTION
The
PC3018 and 3025 are low-saturation type regulators with an output current of 1 A at respective output voltages of
1.8 and 2.5 V. These regulators are also provided with an ON/OFF function, which reduces the dissipation when there is
no load, making them ideal for systems requiring low power consumption.
FEATURES
ON/OFF pin for output control (active-high)
Output current capacitance: 1 A
Low minimum voltage difference between input and output
(V
DIF
= 0.5 V MAX. (when I
O
= 0.5 A))
Output voltage accuracy:
2%
On-chip inrush current protection circuit for when input voltage rises
(when input voltage is low)
On-chip overcurrent limiter and thermal shutdown circuit
On-chip safe operating area controller
ORDERING INFORMATION
Part Number
Package
Marking
Packing Type
PC30xxTJ
MP-3Z (5 pin)
30xx
In bags
PC30xxTJ-E1 MP-3Z (5 pin)
30xx
16 mm embossed taping
Pin 1 in tape pull-out direction
2000/reel
PC30xxTJ-E2 MP-3Z (5 pin)
30xx
16 mm embossed taping
Pin 1 in tape wind-up direction
2000/reel
PC30xxHB
MP-3 (5 pin)
30xx
In bags
"xx" in the part number and marking corresponds to the following output voltage.
Example
Output Voltage
Part Number
Marking
1.8 V
PC3018TJ
3018
2.5 V
PC3025TJ
3025
PIN CONFIGURATION (Marking Side)
MP-3Z (5 pin), MP-3 (5 pin)
1: ON/OFF
2: INPUT
3: GND
4: OUTPUT
5: NC
6: GND (Fin)
1
2
3
4
5
6
Data Sheet G15506EJ2V0DS
2
PC3018, 3025
BLOCK DIAGRAM
INPUT
OUTPUT
GND
ON/OFF
ON/OFF
circuit
Starter
circuit
Reference
voltage
circuit
Thermal
shutdown
circuit
Error
amplifier
Driver
Safe operating
area controller
Inrush
current
protection
circuit
Overcurrent limiter
Data Sheet G15506EJ2V0DS
3
PC3018, 3025
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25C unless otherwise specified)
Parameter
Symbol
Rating
Unit
Input Voltage
V
IN
0.3 to +20
V
ON/OFF pin voltage
V
ON/OFF
0.3 to V
IN
+0.3 V (however, V
ON/OFF
20)
Internal Power Dissipation (T
C
= 25
C)
P
T
10
Note
W
Operating Ambient Temperature
T
A
30 to +85
C
Operating Junction Temperature
T
J
30 to +150
C
Storage Temperature
T
stg
55 to +150
C
Thermal Resistance (junction to case)
R
th(J-C)
12.5
C/W
Thermal Resistance (junction to ambient)
R
th(J-A)
125
C/W
Note The total dissipation is limited by an internal circuit. Where T
J
> 150C, an internal protection circuit cuts off the
output.
Caution Product quality may suffer if the absolute maximum rating is exceeded even momentarily for any
parameter. That is, the absolute maximum ratings are rated values at which the product is on the verge
of suffering physical damage, and therefore the product must be used under conditions that ensure that
the absolute maximum ratings are not exceeded.
TYPICAL CONNECTION
INPUT
C
IN
PC3018, PC3025
OUTPUT
C
OUT
D
1
D
2
+
ON/OFF
C
IN
:
Must be 0.1
F or more. Determine the capacitance in accordance with the line between the power supply
smoothing circuit and input pin. Be sure to connect this capacitor to prevent abnormal oscillation. Use of a
capacitor with excellent voltage and temperature characteristics, such as a film capacitor, is recommended. Note
that some laminated ceramic capacitors have poor temperature and voltage characteristics. When using a
laminated ceramic capacitor, the capacitance of 0.1
F or more must be reserved in the voltage and temperature
ranges used.
C
OUT
: Must be 10
F or more. Be sure to connect this capacitor to prevent oscillation and to improve transient load
stability.
Connect C
IN
and C
OUT
as close to the IC pins as possible (within 1 to 2 cm). Also, when using the device at 0
C or
less, use an electrolytic capacitor with low impedance characteristics.
D
1
:
Connect a diode if the voltage on the OUTPUT pin is higher than that on the INPUT pin.
D
2
:
Connect a Schottky barrier diode if the voltage on the OUTPUT pin is lower than that on the GND pin.
Caution Ensure that voltage is not applied to the OUTPUT pin externally.
Supply V
IN
and V
ON/OFF
from different power supplies.
Design so that V
IN
and V
ON/OFF
either rise at the same time or V
ON/OFF
rises after V
IN
.
Data Sheet G15506EJ2V0DS
4
PC3018, 3025
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Corresponding Model
MIN.
TYP.
MAX.
Unit
PC3018
2.8
16
V
Input Voltage
V
IN
PC3025
3.5
16
V
ON/OFF Pin Voltage
V
ON/OFF
All models
0
V
IN
Output Current
I
O
All models
0
1
A
Operating Ambient Temperature T
A
All models
-
30
+
85
C
Operating Junction Temperature T
J
All models
-
30
+
125
C
Caution
The recommended operating range may be exceeded without causing any problems provided the
absolute maximum ratings are not exceeded. However, if the device is operated in a way that exceeds
the recommended operating conditions, the margin between the actual conditions of use and the
absolute maximum ratings is small, and therefore thorough evaluation is necessary.
The recommended operating conditions do not imply that the device can be used with all values at
their maximum values.
ELECTRICAL CHARACTERISTICS
PC3018
(T
J
= 25
C, V
IN
= 2.8 V, V
ON/OFF
= 2.8 V, I
O
= 0.5 A, C
IN
= 0.1
F, C
OUT
= 10
F, unless otherwise specified)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
1.764
1.8
1.836
Output Voltage
V
O
0
C
T
J
125
C, 2.8 V
V
IN
5 V,
0 mA
I
O
1 A
(1.71)
(1.854)
V
Line Regulation
REG
IN
2.8 V
V
IN
16 V
6
25
mV
Load Regulation
REG
L
0 A
I
O
1 A
7
30
mV
I
O
= 0 A
2
4
Quiescent Current
I
BIAS
I
O
= 1 A
20
60
mA
V
IN
= 2.4 V, V
ON/OFF
= 2.0 V, I
O
= 0 A
10
30
Startup Quiescent Current
I
BIAS (s)
V
IN
= 2.4 V, V
ON/OFF
= 2.0 V, I
O
= 1 A
80
mA
Quiescent Current Change
I
BIAS
0
C
T
J
125
C, 2.8 V
V
IN
16 V
2.9
20
mA
Output Noise Voltage
V
n
10 Hz
f
100 kHz
40
V
r.m.s.
Ripple Rejection
RR
f = 120 Hz, 2.8 V
V
IN
9 V
(45)
60
dB
I
O
= 0.5 A
0.25
0.5
Dropout Voltage
V
DIF
0
C
T
J
125
C, I
O
= 1 A
0.7
V
V
IN
= 2.8 V
1.2
1.7
3.0
Short Circuit Current
I
Oshort
V
IN
= 16 V
1.2
A
V
IN
= 2.8 V
1.0
1.5
3.0
V
IN
= 3.3 V
1.0
1.7
3.0
Peak Output Current
I
Opeak
V
IN
= 16 V
1.1
A
Temperature Coefficient of
Output Voltage
V
O
/
T
0
C
T
J
125
C, I
O
= 5 mA
-
0.4
mV/
C
ON Voltage
V
ON/OFF
2.0
V
OFF Voltage
V
ON/OFF
0.8
V
V
IN
= 2.8 V, V
ON/OFF
= 2.8 V
90
V
IN
= 3.3 V, V
ON/OFF
= 3.3 V
110
ON/OFF Pin Current
I
ON/OFF
V
IN
= 5 V, V
ON/OFF
= 5 V
160
A
Standby Current
I
BIAS (OFF)
V
ON/OFF
= 0 V
10
A
Remark Values in parentheses are reference values obtained during product design.
Data Sheet G15506EJ2V0DS
5
PC3018, 3025
PC3025
(T
J
= 25
C, V
IN
= 3.5 V, V
ON/OFF
= 3.5 V, I
O
= 0.5 A, C
IN
= 0.1
F, C
OUT
= 10
F, unless otherwise specified)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
2.45
2.5
2.55
Output Voltage
V
O
0
C
T
J
125
C, 3.5 V
V
IN
5 V,
0 mA
I
O
1 A
(2.375)
(2.575)
V
Line Regulation
REG
IN
3.5 V
V
IN
16 V
6
25
mV
Load Regulation
REG
L
0 A
I
O
1 A
7
30
mV
I
O
= 0 A
2
4
Quiescent Current
I
BIAS
I
O
= 1 A
20
60
mA
V
IN
= 2.4 V, V
ON/OFF
= 2.0 V, I
O
= 0 A
10
30
Startup Quiescent Current
I
BIAS (s)
V
IN
= 3.0 V, V
ON/OFF
= 2.0 V, I
O
= 1 A
80
mA
Quiescent Current Change
I
BIAS
0
C
T
J
125
C, 3.5 V
V
IN
16 V
2.9
20
mA
Output Noise Voltage
V
n
10 Hz
f
100 kHz
40
V
r.m.s.
Ripple Rejection
RR
f = 120 Hz, 3.5 V
V
IN
9 V
(45)
60
dB
I
O
= 0.5 A
0.25
0.5
Dropout Voltage
V
DIF
0
C
T
J
125
C, I
O
= 1 A
0.7
V
V
IN
= 3.5 V
1.2
1.7
3.0
Short Circuit Current
I
Oshort
V
IN
= 16 V
1.2
A
V
IN
= 3.5 V
1.0
1.5
3.0
V
IN
= 5 V
1.0
2.1
3.0
Peak Output Current
I
Opeak
V
IN
= 16 V
1.1
A
Temperature Coefficient of
Output Voltage
V
O
/
T
0
C
T
J
125
C, I
O
= 5 mA
-
0.5
mV/
C
ON Voltage
V
ON/OFF
2.0
V
OFF Voltage
V
ON/OFF
0.8
V
V
IN
= 3.5 V, V
ON/OFF
= 3.5 V
110
ON/OFF Pin Current
I
ON/OFF
V
IN
= 5 V, V
ON/OFF
= 5 V
160
A
Standby Current
I
BIAS (OFF)
V
ON/OFF
= 0 V
10
A
Remark Values in parentheses are reference values obtained during product design.
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