2001
BIPOLAR ANALOG INTEGRATED CIRCUIT
PC2933A,
2905A
THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR
DATA SHEET
Document No. G15374EJ2V0DS00 (2nd edition)
Date Published September 2001 NS CP(K)
Printed in Japan
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
PC2933A, 2905A of low dropout voltage three terminal positive regulators is constructed with PNP output
transistor. The
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
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 (
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)
1
2
3
1: INPUT
2: GND
3: OUTPUT
PC2933AHF, 2905AHF : MP-45G
1: INPUT
2: GND
3: OUTPUT
4: GND (Fin)
PC2933AHB, 2905AHB : MP-3
PC2933AT, 2905AT : MP-3Z
1
2
3
4
The mark
5
shows major revised points.
Data Sheet G15374EJ2V0DS
2
PC2933A,
2905A
BLOCK DIAGRAM
Start-up
circuit
Reference
voltage
Thermal
shut down
Error
amp.
Drive
circuit
Saturation
protection
Safe operating
area protection
OUTPUT
GND
INPUT
Over current
protection
Data Sheet G15374EJ2V0DS
3
PC2933A,
2905A
ORDERING INFORMATION
Part Number
Package
Output Voltage
Marking
Package Type
PC2933AHF
MP-45G
(Isolated TO-220)
3.3 V
2933A
Packed in envelope
PC2933AHB
MP-3 (SC-64)
3.3 V
2933A
Packed in envelope
PC2933AT
MP-3Z (SC-63)
3.3 V
2933A
Packed in envelope
PC2933AT-E1
MP-3Z (SC-63)
3.3 V
2933A
16 mm wide embossed taping
Pin 1 on drawout side
2000 pcs/reel
PC2933AT -E2
MP-3Z (SC-63)
3.3 V
2933A
16 mm width embossed taping
Pin 1 at takeup side
2000 pcs/reel
PC2933AT -T1
MP-3Z (SC-63)
3.3 V
2933A
32 mm wide adhesive taping
Pin 1 at drawout side
1500 pcs/reel
PC2933AT -T2
MP-3Z (SC-63)
3.3 V
2933A
32 mm wide adhesive taping
Pin 1 at takeup side
1500 pcs/reel
PC2905AHF
MP-45G
(Isolated TO-220)
5.0 V
2905A
Packed in envelope
PC2905AHB
MP-3 (SC-64)
5.0 V
2905A
Packed in envelope
PC2905AT
MP-3Z (SC-63)
5.0 V
2905A
Packed in envelope
PC2905AT-E1
MP-3Z (SC-63)
5.0 V
2905A
16 mm wide embossed taping
Pin 1 at drawout side
2000 pcs/reel
PC2905AT-E2
MP-3Z (SC-63)
5.0 V
2905A
16 mm wide embossed taping
Pin 1 at takeup side
2000 pcs/reel
PC2905AT-T1
MP-3Z (SC-63)
5.0 V
2905A
32 mm wide adhesive taping
Pin 1 at drawout side
1500 pcs/reel
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
4
PC2933A,
2905A
ABSOLUTE MAXIMUM RATINGS (T
A
= 25C unless otherwise specified)
Rating
Parameter
Symbol
PC2933AHF,
2905AHF
PC2933AHB, 2905AHB
PC2933AT, 2905AT
Unit
Input Voltage
V
IN
20
V
Internal Power Dissipation
Note
(T
C
= 25
C)
P
T
15
10
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)
7
12.5
C/W
Thermal Resistance (junction to ambient)
R
th(J-A)
65
125
C/W
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
INPUT
C
IN
PC2933A, 2905A
OUTPUT
C
OUT
D
1
D
2
+
C
IN
: 0.1
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
F or higher for the voltage and temperature range to be used.
C
OUT
: 47
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.
5
Data Sheet G15374EJ2V0DS
5
PC2933A,
2905A
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Type Number
MIN.
TYP.
MAX.
Unit
PC2933A
4.3
16
Input Voltage
V
IN
PC2905A
6
16
V
Output Current
I
O
All
0
1.0
A
Operating Ambient Temperature T
A
All
30
+85
C
Operating Junction Temperature T
J
All
30
+125
C
ELECTRICAL CHARACTERISTICS
PC2933A
(T
J
= 25
C, V
IN
= 5 V, I
O
= 500 mA, C
IN
= 0.22
F, C
OUT
= 47
F, unless otherwise specified)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
3.18
3.3
3.42
V
Output Voltage
V
O
0
C
T
J
125
C, 4.3 V
V
IN
16 V,
0 A
I
O
500 mA
3.14
3.46
0
C
T
J
125
C, 0 A
I
O
1 A
Line Regulation
REG
IN
4.3 V
V
IN
16 V
12
33
mV
Load Regulation
REG
L
0 A
I
O
1 A
23
33
I
O
= 0 A
2.0
3.0
mA
Quiescent Current
I
BIAS
I
O
= 1 A
20
40
V
IN
= 3.1 V, I
O
= 0 A
10
30
mA
Startup Quiescent Current
I
BIAS (s)
V
IN
= 3.1 V, I
O
= 1 A
80
Quiescent Current Change
I
BIAS
0
C
T
J
125
C, 4.3 V
V
IN
16 V
3.0
15
mA
Output Noise Voltage
V
n
10 Hz
f
100 kHz
55
V
r.m.s.
Ripple Rejection
RR
4.3 V
V
IN
16 V, f = 120 Hz
48
64
dB
Dropout Voltage
V
DIF
0
C
T
J
125
C, I
O
= 1 A
0.7
1.0
V
V
IN
= 4.5 V
1.2
1.6
3.0
Short Circuit Current
I
Opeak
V
IN
= 16 V
1.2
A
V
IN
= 4.5 V
1.0
1.4
3.0
A
Peak Output Current
I
Opeak
V
IN
= 16 V
1.3
1.7
2.8
Temperature Coefficient of
Output Voltage
V
O
/
T
0
C
T
J
125
C, I
O
= 5 mA
0.4
mV/
C
Data Sheet G15374EJ2V0DS
6
PC2933A,
2905A
PC2905A
(T
J
= 25
C, V
IN
= 8 V, I
O
= 500 mA, C
IN
= 0.22
F, C
OUT
= 47
F, unless otherwise specified)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
4.83
5.0
5.18
V
Output Voltage
V
O
0
C
T
J
125
C, 6 V
V
IN
16 V,
0 A
I
O
500 mA
4.75
5.25
0
C
T
J
125
C, 0 A
I
O
1 A
Line Regulation
REG
IN
6 V
V
IN
16 V
23
50
mV
Load Regulation
REG
L
0 A
I
O
1 A
28
50
mV
I
O
= 0 A
2.2
3.5
mA
Quiescent Current
I
BIAS
I
O
= 1 A
28
50
V
IN
= 4.5 V, I
O
= 0 A
10
30
mA
Startup Quiescent Current
I
BIAS (s)
V
IN
= 4.5 V, I
O
= 1 A
50
Quiescent Current Change
I
BIAS
0
C
T
J
125
C, 6 V
V
IN
16 V
2.9
15
mA
Output Noise Voltage
V
n
10 Hz
f
100 kHz
90
V
r.m.s.
Ripple Rejection
RR
f = 120 Hz, 6 V
V
IN
16 V
46
61
dB
Dropout Voltage
V
DIF
0
C
T
J
125
C, I
O
= 1 A
0.7
1.0
V
V
IN
= 6.5 V
1.15
1.8
3.0
Short Circuit Current
I
Opeak
V
IN
= 16 V
1.1
A
V
IN
= 6.5 V
1.1
1.5
3.0
A
Peak Output Current
I
Opeak
V
IN
= 16 V
1.4
2.0
2.8
Temperature Coefficient of
Output Voltage
V
O
/
T
0
C
T
J
125
C, I
O
= 5 mA
0.6
mV/
C
Data Sheet G15374EJ2V0DS
7
PC2933A,
2905A
TYPICAL CHARACTERISTICS (Reference Values)
300
200
100
0
-100
-200
-300
-400
0
100
150
T
J
V - Output Voltage Deviation - mV
O
V
O
vs.T
J
-50
50
PC2905A
PC2933A
I
O
= 5 mA
-
Operating Junction Temperature - C
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
1
2
3
4
5
6
7
8
V
IN
Voltage - V
V
O
- Output Voltage - V
V
O
vs.V
IN
PC2933A
T
J
= 25C
O
= 0.5 A
I
O
= 5 mA
I
O
= 1.0 A
- Input
8
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
8
V
IN
- Input Voltage - V
V
O
vs. V
IN
PC2905A
T
J
= 25C
O
= 0.5 A
I
O
= 5 mA
I
O
= 1.0 A
V
O
- Output Voltage - V
50
40
30
20
10
0
4
0
2
6
8
10
12
14
16
18
20
BIAS
Quiescent Current - mA
BIAS
I
BIAS(s)
) vs.V
IN
PC2933A
O
= 0.5 A
I
O
= 0 A
I
O
= 1 A
T = 25C
V
IN
- Input Voltage - V
50
40
30
20
10
0
2
4
6
8
10
12
14
16
18
20
T = 25
C
O
= 0.5 A
I
O
= 0 A
I
O
= 1 A
V
IN
- Input Voltage - V
BIAS
I
BIAS(s)
) vs.V
IN
PC2905A
B
IA
S
Quiescent Current - mA
50
85 100
150
5
10
15
20
0
1.0
1.92
P
d -
T
otal P
o
w
er Dissipation -
W
T
A -
Operating Ambient Temperature - C
0
P
d vs.
T
A
Solid line :
PC2933AHF, 2905AHF
Broken line :
PC2933AHB, 2905AHB
PC2933AT, 2905AT
With infinite heatsink
Without heatsink
Data Sheet G15374EJ2V0DS
8
PC2933A,
2905A
1.0
0.8
0.6
0.4
0.2
0
-25
+125
0
+150
+75
V
DIF
- Dropout Voltage - V
V
DIF
vs.T
J
+100
+50
+25
PC2905A
PC2933A
I
O
= 1.0 A
T
J
Operating Junction Temperature - C
3
2
1
0
0
20
DIF
I
O peak
- Peak Output Current - A
I
O peak
vs. V
DIF
PC2933A
10
15
5
T
J
= 125C
T
J
= 25C
T
J
= 0C
- Dropout Voltage - V
V
m
3
2
1
0
0
20
I
O peak
- Peak Output Current - A
vs.V
I
O peak
DIF
PC2905A
10
15
T
J
= 125C
T
J
= 25C
T
J
= 0C
V
DIF
- Dropout Voltage - V
R
R vs. f
R
R - Ripple Rejection - dB
80
70
0
100
1 k
10 k
100 k
f - Frequency - Hz
60
50
40
30
20
10
T
J
= 25C
I
O
= 1 A
PC2933A
PC2905A
4.3 V
V
IN
16 V
6 V
V
IN
16 V ( PC2905A)
( PC2933A)
R
R vs. I
O
80
70
30
0.2
0.4
0.6
1.0
0.8
0
60
50
40
PC2933A
PC2905A
O
- Output Current - A
I
R
R - Ripple Rejection - dB
f = 120 Hz
T
J
= 25C
4.3 V
V
IN
16 V
6 V
V
IN
16 V ( PC2905A)
( PC2933A)
V
DIF
vs. I
O
V
DIF
- Dropout Voltage - V
1.0
0
0.2
0.4
0.6
1.0
I
O
- Output Current - A
0.8
0.6
0.4
0.2
0
0.8
PC2905A
PC2933A
T
J
= 25C
Data Sheet G15374EJ2V0DS
9
PC2933A,
2905A
V
O
vs.I
O
PC2933A
6
5
0
0.4
0.8
1.2
2.4
1.6
4
3
1
2.0
2
V
IN
= 16 V
V
IN
= 4.3 V
V
IN
= 5 V
T
J
= 25C
I
O
- Output Current - A
V
O
- Output Voltage - V
6
5
0
0.4
0.8
1.2
2.4
1.6
4
3
1
2.0
2
V
IN
= 16 V
V
IN
= 6 V
V
IN
= 8 V
V
O
vs.I
O
PC2905A
V
O
- Output Voltage - V
I
O
- Output Current - A
T
J
= 25C
Data Sheet G15374EJ2V0DS
10
PC2933A,
2905A
PACKAGE DRAWINGS
PC2933AHF, 2905AHF
D
17.0
0.3
3PIN PLASTIC SIP (MP-45G)
NOTE
Each lead centerline is located within 0.25 mm of
its true position (T.P.) at maximum material condition.
ITEM
MILLIMETERS
P3HF-254B-4
G
0.25
H
2.54 (T.P.)
A
10.0
0.2
I
5.0
0.3
U
2.4
0.5
V
Y
8.9
0.7
Z
1.30
0.2
J
K
L
8.5
0.2
B
7.0
0.2
C
1.50
0.2
E
F
0.75
0.10
M
8.5
0.2
N
P
2.8
0.2
3.3
0.2
2.46
0.2
5.0
0.2
4.5
0.2
0.65
0.10
1
3
2
M
A
B
E
I
D
L
M
K
Y
J
H
C
F
G
Z
N
P
U
V
Data Sheet G15374EJ2V0DS
11
PC2933A,
2905A
PC2933AHB, 2905AHB
MP-3 (SC-64) (Unit: mm)
1
2
3
4
2.3
2.3
0.75
1.1
0.1
0.5
1.6
0.2
5.0
0.2
6.5 0.2
5.5
0.2
7.0 MIN.
+
0.2
0.1
1.5
+
0.
2
0.
1
13.7 MIN.
2.3
0.2
0.5
0.1
0.5
+
0.2
0.1
PC2933AT, 2905AT
MP-3Z (SC-63) (Unit: mm )
2.3
2.3
0.8
0.9 MAX.
0.8 MAX.
1.10.2
0.8
1
2
3
4
4.3 MAX.
10.0 MAX.
0.5
1.0 MIN.
1.5 TYP.
2.0 MIN.
5.5
0.2
1.5
+
0.2
0.1
6.50.2
2.30.2
5.00.2
0.50.1
Data Sheet G15374EJ2V0DS
12
PC2933A,
2905A
RECOMMENDED SOLDERING CONDITIONS
When soldering this product, it is highly recommended to observe the conditions as shown below. If other soldering
processes are used, or if the soldering is perfomed under different condition, please make sure to consult with our
sales offices.
For more details, refer to our document "SEMICONDUCTOR DEVICE MOUNTING TECHNOLOGY MANUAL"
(C10535E).
Surface Mount Device
PC2933AT, 2905AT: MP-3Z (SC-63)
Process
Conditions
Symbol
Infrared Ray Reflow
Peak temperature: 235C or below (Package surface temperature),
Reflow time: 30 seconds or less (at 210C or higher),
Maximum number of reflow processes: 2 times or less.
IR35-00-2
Vapor Phase Soldering
Peak temperature: 215C or below (Package surface temperature),
Reflow time: 40 seconds or less (at 200C or higher),
Maximum number of reflow processes: 2 times or less.
VP15-00-2
Wave Soldering
Solder temperature: 260C or below, Flow time: 10 seconds or less,
Maximum number of flow processes: 1 time,
Pre-heating temperature: 120C or below (Package surface temperature).
WS60-00-1
Partial Heating Method
Pin temperature: 300C or below,
Heat time: 3 seconds or less (Per each side of the device).
Caution Apply only one kind of soldering condition to a device, except for "partial heating method", or the
device will be damaged by heat stress.
Through-hole devices
PC2933AHF, 2905AHF: MP-45G
PC2933AHB, 2905AHB: MP-3
Process
Conditions
Wave soldering
(only to leads)
Solder temperature: 260C or below,
Flow time: 10 seconds or less.
Partial heating method
Pin temperature: 300C or below,
Heat time: 3 seconds or less (Per each pin).
Caution For through-hole device, the wave soldering process must be applied only to leads, and make
sure that the package body does not get jet soldered.
Data Sheet G15374EJ2V0DS
13
PC2933A,
2905A
NOTES ON USE
When the
PC2933A, 2905A are used with an input voltage that is lower than the value indicated in the recommended
operating conditions, a large quiescent current flows through the device due to saturation of the transistor of the output
stage. (Refer to the I
BIAS
(I
BIAS(S)
) vs. V
IN
curves in TYPICAL CHARACTERISTICS).
These products have saturation protector, but a current of up to 80 mA MAX. may flow through the device. Thus the
power supply on the input side must have sufficient capacity to allow this quiescent current to pass when the device starts
up.
REFERENCE DOCUMENTS
Document Name
Document No.
QUALITY GRADES ON NEC SEMICONDUCTOR DEVICES
C11531E
SEMICONDUCTOR DEVICE MOUNTING TECHNOLOGY MANUAL
C10535E
VOLTAGE REGULATOR OF SMD
G11872E
SEMICONDUCTOR SELECTION GUIDE PRODUCTS AND PACKAGES
X13769E
Data Sheet G15374EJ2V0DS
14
PC2933A,
2905A
[MEMO]
Data Sheet G15374EJ2V0DS
15
PC2933A,
2905A
[MEMO]
PC2933A,
2905A
M8E 00. 4
The information in this document is current as of September, 2001. The information is subject to
change without notice. For actual design-in, refer to the latest publications of NEC's data sheets or
data books, etc., for the most up-to-date specifications of NEC semiconductor products. Not all
products and/or types are available in every country. Please check with an NEC sales representative
for availability and additional information.
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"Standard", "Special" and "Specific". The "Specific" quality grade applies only to semiconductor products
developed based on a customer-designated "quality assurance program" for a specific application. The
recommended applications of a semiconductor product depend on its quality grade, as indicated below.
Customers must check the quality grade of each semiconductor product before using it in a particular
application.
"Standard": Computers, office equipment, communications equipment, test and measurement equipment, audio
and visual equipment, home electronic appliances, machine tools, personal electronic equipment
and industrial robots
"Special":
Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)
"Specific": Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems and medical equipment for life support, etc.
The quality grade of NEC semiconductor products is "Standard" unless otherwise expressly specified in NEC's
data sheets or data books, etc. If customers wish to use NEC semiconductor products in applications not
intended by NEC, they must contact an NEC sales representative in advance to determine NEC's willingness
to support a given application.
(Note)
(1) "NEC" as used in this statement means NEC Corporation and also includes its majority-owned subsidiaries.
(2) "NEC semiconductor products" means any semiconductor product developed or manufactured by or for
NEC (as defined above).
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