DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µ
PC2933A, 2905A
THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR
DESCRIPTION
The
µ
PC2933A, 2905A of low dropout voltage three terminal positive regulators is constructed with PNP output
transistor. The
µ
PC2933A, 2905A feature the ability to source 1 A of output current with a low dropout voltage of typically
0.7 V.
The power dissipation of the
µ
PC2933A, 2905A can be drastically reduced compared with the conventional three
terminal positive voltage regulators that is constructed with NPN output transistor. Also, this series corresponds to the low
voltage output (3 V, 3.3 V) which is not in the conventional low dropout regulators (
µ
PC2400A series).
FEATURES
•
Output current in excess of 1.0 A
•
Low dropout voltage V
DIF
= 0.7 V TYP. (at I
O
= 1 A)
•
On-chip overcurrent and thermal protection circuit
•
On-chip output transistor safe area protection circuit
PIN CONFIGURATION (Marking Side)
PC2933AHF, 2905AHF : MP-45G
PC2933AHB, 2905AHB : MP-3
PC2933AT, 2905AT : MP-3Z
4
1
2
3
1: INPUT
2: GND
3: OUTPUT
1
2
3
1: INPUT
2: GND
3: OUTPUT
4: GND (Fin)
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.
Document No. G15374EJ2V0DS00 (2nd edition)
Date Published September 2001 NS CP(K)
Printed in Japan
The mark
5
shows major revised points.
©
2001
µ
PC2933A, 2905A
BLOCK DIAGRAM
INPUT
Safe operating
area protection
Start-up
circuit
Reference
voltage
Error
amp.
Drive
circuit
Saturation
protection
OUTPUT
Thermal
shut down
Over current
protection
GND
2
Data Sheet G15374EJ2V0DS
µ
PC2933A, 2905A
ORDERING INFORMATION
Part Number
Package
MP-45G
(Isolated TO-220)
Output Voltage
3.3 V
Marking
2933A
Package Type
•
Packed in envelope
µ
PC2933AHF
µ
PC2933AHB
µ
PC2933AT
µ
PC2933AT-E1
MP-3 (SC-64)
MP-3Z (SC-63)
MP-3Z (SC-63)
3.3 V
3.3 V
3.3 V
2933A
2933A
2933A
•
Packed in envelope
•
Packed in envelope
•
16 mm wide embossed taping
•
Pin 1 on drawout side
•
2000 pcs/reel
µ
PC2933AT -E2
MP-3Z (SC-63)
3.3 V
2933A
•
16 mm width embossed taping
•
Pin 1 at takeup side
•
2000 pcs/reel
µ
PC2933AT -T1
MP-3Z (SC-63)
3.3 V
2933A
•
32 mm wide adhesive taping
•
Pin 1 at drawout side
•
1500 pcs/reel
µ
PC2933AT -T2
MP-3Z (SC-63)
3.3 V
2933A
•
32 mm wide adhesive taping
•
Pin 1 at takeup side
•
1500 pcs/reel
µ
PC2905AHF
MP-45G
(Isolated TO-220)
5.0 V
2905A
•
Packed in envelope
µ
PC2905AHB
µ
PC2905AT
µ
PC2905AT-E1
MP-3 (SC-64)
MP-3Z (SC-63)
MP-3Z (SC-63)
5.0 V
5.0 V
5.0 V
2905A
2905A
2905A
•
Packed in envelope
•
Packed in envelope
•
16 mm wide embossed taping
•
Pin 1 at drawout side
•
2000 pcs/reel
µ
PC2905AT-E2
MP-3Z (SC-63)
5.0 V
2905A
•
16 mm wide embossed taping
•
Pin 1 at takeup side
•
2000 pcs/reel
µ
PC2905AT-T1
MP-3Z (SC-63)
5.0 V
2905A
•
32 mm wide adhesive taping
•
Pin 1 at drawout side
•
1500 pcs/reel
µ
PC2905AT-T2
MP-3Z (SC-63)
5.0 V
2905A
•
32 mm wide adhesive taping
•
Pin 1 at takeup side
•
1500 pcs/reel
Data Sheet G15374EJ2V0DS
3
µ
PC2933A, 2905A
ABSOLUTE MAXIMUM RATINGS (T
A
= 25°C unless otherwise specified)
Rating
Parameter
Symbol
µ
PC2933AHF,
2905AHF
µ
PC2933AHB, 2905AHB
µ
PC2933AT, 2905AT
Unit
Input Voltage
Internal Power Dissipation
Note
V
IN
(T
C
= 25°C)
P
T
T
A
T
J
T
stg
R
th(J-C)
R
th(J-A)
7
65
15
20
10
–30 to +85
–30 to +150
–55 to +150
12.5
125
V
W
°C
°C
°C
°C/W
°C/W
Operating Ambient Temperature
Operating Junction Temperature
Storage Temperature
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient)
Note
Internally limited. When the operating junction temperature rises over 150°C, the internal circuit shuts down the
output voltage.
Caution If the absolute maximum rating of any of the above parameters is exceeded even momentarily, the
quality of the product may be degraded. In other words, absolute maximum ratings specify the
values exceeding which the product may be physically damaged. Be sure to use the product with
these ratings never exceeded.
STANDARD CONNECTION
D
1
INPUT
C
IN
PC2933A, 2905A
+
C
OUT
OUTPUT
D
2
C
IN
: 0.1
µ
F or higher. Set this value according to the length of the line between the regulator and INPUT pin. Be sure
to connect C
IN
to prevent parasitic oscillation. Use of a film capacitor or other capacitor with excellent voltage and
temperature characteristics is recommended. If using a laminated ceramic capacitor, it is necessary to ensure
that C
IN
is 0.1
µ
F or higher for the voltage and temperature range to be used.
5
C
OUT
: 47
µ
F or higher. Be sure to connect C
OUT
to prevent oscillation and improve excessive load regulation. Place
C
IN
and C
OUT
as close as possible to the IC pins (within 2 cm). Also, use an electrolytic capacitor with low
impedance characteristics if considering use at sub-zero temperatures.
D
1
: If the OUTPUT pin has a higher voltage than the INPUT pin, connect a diode.
D
2
: If the OUTPUT pin has a lower voltage than the GND pin, connect a Schottky barrier diode.
Caution Make sure that no voltage is applied to the OUTPUT pin from external.
4
Data Sheet G15374EJ2V0DS
µ
PC2933A, 2905A
RECOMMENDED OPERATING CONDITIONS
Parameter
Input Voltage
Symbol
V
IN
Type Number
MIN.
4.3
6
0
–30
–30
TYP.
MAX.
16
16
1.0
+85
+125
A
°C
°C
Unit
V
µ
PC2933A
µ
PC2905A
Output Current
I
O
All
All
All
Operating Ambient Temperature T
A
Operating Junction Temperature T
J
ELECTRICAL CHARACTERISTICS
°
µ
PC2933A (T
J
= 25°C, V
IN
= 5 V, I
O
= 500 mA, C
IN
= 0.22
µ
F, C
OUT
= 47
µ
F, unless otherwise specified)
Parameter
Output Voltage
Symbol
V
O
0°C
≤
T
J
≤
125°C, 4.3 V
≤
V
IN
≤
16 V,
0 A
≤
I
O
≤
500 mA
0°C
≤
T
J
≤
125°C, 0 A
≤
I
O
≤
1 A
Line Regulation
Load Regulation
Quiescent Current
REG
IN
REG
L
I
BIAS
4.3 V
≤
V
IN
≤
16 V
0 A
≤
I
O
≤
1 A
I
O
= 0 A
I
O
= 1 A
Startup Quiescent Current
I
BIAS (s)
V
IN
= 3.1 V, I
O
= 0 A
V
IN
= 3.1 V, I
O
= 1 A
Quiescent Current Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Short Circuit Current
12
23
2.0
20
10
33
33
3.0
40
30
80
3.0
55
48
64
0.7
1.2
1.6
1.2
1.0
1.3
1.4
1.7
–0.4
3.0
2.8
mV/°C
A
1.0
3.0
15
mA
mA
mA
mV
Conditions
MIN.
3.18
3.14
TYP.
3.3
MAX.
3.42
3.46
Unit
V
∆
I
BIAS
V
n
R•R
V
DIF
I
Opeak
0°C
≤
T
J
≤
125°C, 4.3 V
≤
V
IN
≤
16 V
10 Hz
≤
f
≤
100 kHz
4.3 V
≤
V
IN
≤
16 V, f = 120 Hz
0°C
≤
T
J
≤
125°C, I
O
= 1 A
V
IN
= 4.5 V
V
IN
= 16 V
µ
V
r.m.s.
dB
V
A
Peak Output Current
I
Opeak
V
IN
= 4.5 V
V
IN
= 16 V
Temperature Coefficient of
Output Voltage
∆
V
O
/
∆
T
0°C
≤
T
J
≤
125°C, I
O
= 5 mA
Data Sheet G15374EJ2V0DS
5
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