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 (3.3 V) which is not in the conventional low dropout regulators (
μ
PC24xxA series).
FEATURES
•
Output current in excess of 1.0 A
•
Low dropout voltage
V
DIF
= 0.7 V TYP. (I
O
= 1 A)
•
On-chip over-current and thermal protection circuit
•
On-chip output transistor safe operating area protection circuit
<R>
PIN CONFIGURATIONS (Marking Side)
μ
PC2933AHF,
μ
PC2905AHF: Isolated TO-220 (MP-45G)
μ
PC2933AHB,
μ
PC2905AHB: SC-64 (MP-3)
4
μ
PC2933AT,
μ
PC2905AT: SC-63 (MP-3Z)
4
1 2 3
1: INPUT
2: GND
3: OUTPUT
1
2
3
1: INPUT
Note1
2: GND
3: OUTPUT
4: GND (Fin)
1
2
3
1: INPUT
2: GND
Note2
3: OUTPUT
4: GND (Fin)
Notes 1.
No.2 pin and No.4 fin are common GND.
2.
No.2 pin is cut. No.2 pin and No.4 fin are common GND.
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 products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Document No. G15374EJ3V0DS00 (3rd edition)
Date Published August 2007 NS
Printed in Japan
2001, 2007
The mark <R> shows major revised points.
The revised points can be easily searched by copying an "<R>" in the PDF file and specifying it in the "Find what:" field.
μ
PC2933A, 2905A
BLOCK DIAGRAM
INPUT
Safe operating
area protection
Start-up
circuit
Reference
voltage
Error
Amp.
Saturation
protection
Drive
circuit
OUTPUT
Thermal
shut down
Over-current
protection
GND
2
Data Sheet G15374EJ3V0DS
μ
PC2933A, 2905A
<R>
ORDERING INFORMATION
Part Number
Package
Isolated TO-220 (MP-45G)
SC-64 (MP-3)
SC-63 (MP-3Z)
Isolated TO-220 (MP-45G)
SC-64 (MP-3)
SC-63 (MP-3Z)
Output Voltage
3.3 V
3.3 V
3.3 V
5.0 V
5.0 V
5.0 V
Marking
2933A
2933A
2933A
2905A
2905A
2905A
μ
PC2933AHF
μ
PC2933AHB
μ
PC2933AT
μ
PC2905AHF
μ
PC2905AHB
μ
PC2905AT
Remark
Tape-packaged products have the symbol -E1, or -E2 suffixed to the part number. Pb-free products have the
symbol -AZ, or -AY suffixed to the part number. Refer to the following table for details.
Part Number
Note1
Package
Isolated TO-220 (MP-45G)
Package Type
•
Packed in envelop
•
Packed in envelop
•
Packed in envelop
•
Packed in envelop
•
Packed in envelop
•
16 mm wide embossed taping
•
Pin 1 on draw-out side
•
2000 pcs/reel
μ
PC29xxAHF
μ
PC29xxAHF-AZ
μ
PC29xxAHB
μ
PC29xxAHB-AZ
μ
PC29xxAHB-AY
μ
PC29xxAT-E1
Note2
Note3
Note2
Isolated TO-220 (MP-45G)
SC-64 (MP-3)
SC-64 (MP-3)
SC-64 (MP-3)
SC-63 (MP-3Z)
μ
PC29xxAT-E1-AZ
Note2
SC-63 (MP-3Z)
•
16 mm wide embossed taping
•
Pin 1 on draw-out side
•
2000 pcs/reel
μ
PC29xxAT-E1-AY
Note3
SC-63 (MP-3Z)
•
16 mm wide embossed taping
•
Pin 1 on draw-out side
•
2000 pcs/reel
μ
PC29xxAT-E2
SC-63 (MP-3Z)
•
16 mm wide embossed taping
•
Pin 1 at take-up side
•
2000 pcs/reel
μ
PC29xxAT-E2-AZ
Note2
SC-63 (MP-3Z)
•
16 mm wide embossed taping
•
Pin 1 at take-up side
•
2000 pcs/reel
μ
PC29xxAT-E2-AY
Note3
SC-63 (MP-3Z)
•
16 mm wide embossed taping
•
Pin 1 at take-up side
•
2000 pcs/reel
Notes 1.
xx stands for symbols that indicate the output voltage.
2.
Pb-free (This product does not contain Pb in the external electrode.)
3.
Pb-free (This product does not contain Pb in the external electrode, Sn100% plating.)
Data Sheet G15374EJ3V0DS
3
μ
PC2933A, 2905A
ABSOLUTE MAXIMUM RATINGS (T
A
= 25°C)
Parameter
Symbol
Rating
Unit
μ
PC2933AHF, 2905AHF
μ
PC2933AHB, 2905AHB
μ
PC2933AT, 2905AT
Input Voltage
Internal Power Dissipation (T
C
= 25°C)
Operating Ambient Temperature
Operating Junction Temperature
Storage Temperature
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient)
Note
V
IN
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
Note
Internally limited. When the operating junction temperature rises above 150°C, the internal circuit shuts down the
output voltage.
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
D
1
INPUT
C
IN
μ
PC2933A, 2905A
OUTPUT
+
C
OUT
D
2
C
IN
: 0.1
μ
F or higher. Be sure to connect C
IN
to prevent parasitic oscillation. Set this value according to the length of the
line between the regulator and the INPUT pin. Use of a film capacitor or other capacitor with first-rate 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.
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 1 to 2 cm). Also, use an electrolytic capacitor with low
impedance characteristics if considering use at sub-zero temperatures.
D
1
D
2
: If the OUTPUT pin has a higher voltage than the INPUT pin, connect a diode.
: 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 G15374EJ3V0DS
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
Unit
V
A
°C
°C
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
1.0
3.0
15
mV
mV
mA
3.14
3.46
Conditions
MIN.
3.18
TYP.
3.3
MAX.
3.42
V
Unit
mA
mA
Δ
I
BIAS
V
n
R•R
V
DIF
I
Oshort
0°C
≤
T
J
≤
125°C, 4.3 V
≤
V
IN
≤
16 V
10 Hz
≤
f
≤
100 kHz
f = 120 Hz, 4.3 V
≤
V
IN
≤
16 V
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
A
Temperature Coefficient of
Output Voltage
Δ
V
O
/
Δ
T
0°C
≤
T
J
≤
125°C, I
O
= 5 mA
mV/°C
Data Sheet G15374EJ3V0DS
5
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