MC78PC00 Series
Low Noise 150 mA
Low Drop Out (LDO)
Linear Voltage Regulator
The MC78PC00 are a series of CMOS linear voltage regulators with
high output voltage accuracy, low supply current, low dropout voltage,
and high Ripple Rejection. Each of these voltage regulators consists of
an internal voltage reference, an error amplifier, resistors, a current
limiting circuit and a chip enable circuit.
The dynamic Response to line and load is fast, which makes these
products ideally suited for use in hand−held communication
equipment. The MC78PC00 series are housed in the SOT−23 5 lead
package, for maximum board space saving.
MC78PC00 Features:
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5
1
SOT−23−5
N SUFFIX
CASE 1212
•
•
•
•
•
•
•
•
•
•
•
•
Ultra−Low Supply Current: typical 35
mA
in ON mode with no load.
Standby Mode: typical 0.1
mA.
Low Dropout Voltage: typical 0.2 V @ I
OUT
= 100 mA.
High Ripple Rejection: typical 70 dB @ f = 1 kHz.
Low Temperature−Drift Coefficient of Output Voltage:
typical
±100
ppm/°C.
Excellent Line Regulation: typical 0.05%/V.
High Accuracy Output Voltage:
±2.0%.
Fast Dynamic Response to Line and Load.
Small Package: SOT−23 5 leads.
Built−in Chip Enable circuit (CE input pin).
Identical Pinout to the LP2980/1/2.
Pb−Free Packages are Available
PIN CONNECTIONS
V
IN
GND
CE
1
2
3
1
2
3
4
(Top View)
4 N/C
5 V
OUT
DEVICE MARKING
(4 digits are available for device marking)
Marking
1
2
K8
F5
F8
G0
G3
J0
3
4
Voltage Version
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
5.0 V
Lot Number
MC78PC00 Applications:
•
Power source for cellular phones (GSM, CDMA, TDMA), Cordless
Phones (PHS, DECT) and 2−way radios.
•
Power source for domestic appliances such as cameras, VCRs and
camcorders.
•
Power source for battery−powered equipment.
Block Diagram
1
MC78PCxx
V
IN
5
V
OUT
Pin #
1
2
3
4
5
PIN DESCRIPTION
Symbol
V
IN
GND
CE
N/C
V
OUT
Description
Input Pin
Ground Pin
Chip Enable Pin
No Connection
Output Pin
V
ref
3
CE
CURRENT LIMIT
2
GND
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
©
Semiconductor Components Industries, LLC, 2005
1
June, 2005 − Rev. 6
Publication Order Number:
MC78PC00/D
MC78PC00 Series
MAXIMUM RATINGS
Rating
Input Voltage
Symbol
V
IN
Value
9.0
Unit
V
V
V
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Á
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Á
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Á
Á
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ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
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Á
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ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
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Á
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Á
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ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
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Á
Á
Á
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁ
Á Á
Á
Á
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á
Á
Input Voltage
V
CE
−0.3 ~V
IN
+0.3
−0.3 ~V
IN
+0.3
250
Output Voltage
V
OUT
P
D
T
A
T
J
Power Dissipation
mW
°C
°C
°C
°C
Operating Temperature Range
−40 to +85
+125
+150
Operating Junction Temperature
Maximum Junction Temperature
Storage Temperature Range
T
Jmax
T
stg
−55 to +125
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.
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á Á Á Á
Á
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á Á Á Á
Á
Output Voltage (V
IN
= V
OUT
+ 1.0 V, I
OUT
= 30 mA)
MC78PC18
MC78PC25
MC78PC28
MC78PC30
MC78PC33
MC78PC50
Nominal Output Current
(V
IN
= V
OUT
+ 1.0 V, V
OUT
= V
OUT(nom)
− 0.1 V)
V
OUT
V
1.764
2.450
2.744
2.94
3.234
4.9
150
−
−
−
−
−
−
−
2.5
1.5
0
−
1.80
2.50
2.80
3.00
3.3
5.0
−
1.836
2.550
2.856
3.06
3.366
5.1
−
I
OUT
mA
mV
mA
mA
Load Regulation (V
IN
= V
OUT
+ 1.0 V, 1.0 mA
≤
I
OUT
≤
80 mA)
Supply Current in OFF mode, i.e. V
CE
= GND
(V
IN
= V
OUT
+ 1.0 V, I
OUT
= 0 mA)
DV
OUT
/DI
OUT
I
SS
I
standby
RR
12
35
40
70
Supply Current in ON mode (V
IN
= V
OUT
+ 1.0 V, I
OUT
= 0 mA)
0.1
70
−
±100
50
5.0
−
−
30
1.0
−
−
−
10
V
IN
0.25
−
Ripple Rejection (f = 1.0 kHz, Ripple 0.5 V
p−p
, V
IN
= V
OUT
+ 1.0 V)
Input Voltage
Output Voltage Temperature Coefficient
(I
OUT
= 30 mA, −40°C
≤
T
A
≤
+85°C)
Short Circuit Current Limit (V
OUT
= 0 V)
CE Pull−down Resistance
CE Input Voltage “H” (ON Mode)
CE Input Voltage “L” (OFF Mode)
Output Noise Voltage (f = 10 Hz to 100 kHz)
dB
V
ppm/°C
mA
MW
V
V
mV
rms
V
IN
DV
OUT
/DT
I
lim
R
PD
V
IH
V
IL
e
n
8.0
Characteristic
Symbol
Min
Typ
Max
Unit
ÁÁÁ Á Á Á
Á
Á
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á Á Á
Á
ÁÁÁ Á Á Á
Á
Á
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á Á Á
Á
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE V
OUT
(T
A
= 25°C)
Characteristic
Symbol
V
DIF
Dropout Voltage (I
OUT
= 100 mA)
1.8
≤
V
OUT
≤
1.9
2.0
≤
V
OUT
≤
2.4
2.5
≤
V
OUT
≤
2.7
2.8
≤
V
OUT
≤
3.3
3.4
≤
V
OUT
≤
6.0
Min
−
−
−
−
−
−
Typ
Max
Unit
V
ÁÁÁ Á Á Á
Á
Á
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á Á Á
Á
Line Regulation
(V
OUT
+ 0.5 V
≤
V
IN
≤
8.0 V, I
OUT
= 30 mA)
DV
OUT
/DV
IN
%/V
0.05
0.20
0.60
0.35
0.24
0.20
0.17
1.40
0.70
0.35
0.30
0.26
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2
MC78PC00 Series
OPERATION
MC78PC00
1
5
V
OUT
V
IN
ERROR AMP.
R1
V
ref
3
CE
CURRENT LIMIT
R2
2
GND
In the MC78PC00, the output voltage V
OUT
is detected by R1, R2. The detected output voltage is then compared to the
internal voltage reference by the error amplifier. Both a current limiting circuit for short circuit protection, and a chip enable
circuit are included.
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3
MC78PC00 Series
TEST CIRCUITS
3
IN
CE
5
V
OUT
OUT
I
OUT
2.2
mF
IN
I
SS
0.1
mF
3
CE
5
V
OUT
OUT
I
OUT
2.2
mF
1
V
IN
MC78PCxx
Series
2
GND
1
V
IN
MC78PCxx
Series
2
GND
0.1
mF
Figure 1. Standard Test Circuits
Figure 2. Supply Current Test Circuit
3
IN
CE
5
V
OUT
OUT
I
OUT
10
mF
1
mF
IN
3
CE
5
V
OUT
10
mF
I1
I2
OUT
1
V
IN
MC78PCxx
Series
2
GND
1
V
IN
MC78PCxx
Series
2
GND
P.G.
Figure 3. Ripple Rejection, Line
Transient Response Test Circuit
Figure 4. Load Transient Response
Test Circuit
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4
MC78PC00 Series
2.0
VOUT, OUTPUT VOLTAGE (VOLTS)
VOUT, OUTPUT VOLTAGE (VOLTS)
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
100
200
300
I
OUT
, OUTPUT CURRENT (mA)
T
A
= 25°C
400
500
V
IN
= 2.1 V
3.8 V
2.8 V
2.3 V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
100
200
300
400
500
I
OUT
, OUTPUT CURRENT (mA)
T
A
= 25°C
5.0 V
4.0 V
3.5 V
V
IN
= 3.3 V
Figure 5. MC78PC18 Output Voltage versus
Output Current
Figure 6. MC78PC30 Output Voltage versus
Output Current
4.5
VOUT, OUTPUT VOLTAGE (VOLTS)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
100
200
300
I
OUT
, OUTPUT CURRENT (mA)
T
A
= 25°C
400
500
V
IN
= 4.3 V
VOUT, OUTPUT VOLTAGE (VOLTS)
6.0 V
5.0 V
4.5 V
6.0
5.0
4.0
3.0
2.0
1.0
T
A
= 25°C
0
0
100
200
300
400
500
I
OUT
, OUTPUT CURRENT (mA)
V
IN
= 5.3 V
7.0 V
6.0 V
5.5 V
Figure 7. MC78PC40 (4.0 V) Output Voltage
versus Output Current
Figure 8. MC78PC50 Output Voltage versus
Output Current
2.0
VOUT, OUTPUT VOLTAGE (VOLTS)
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
V
IN
, INPUT VOLTAGE (VOLTS)
30 mA
50 mA
T
A
= 25°C
I
OUT
= 1 mA
VOUT, OUTPUT VOLTAGE (VOLTS)
3.1
3.0
2.9
2.8
1.0 mA
2.7
30 mA
2.6
I
OUT
= 50 mA
2.5
2.0
3.0
4.0
5.0
6.0
7.0
8.0
V
IN
, INPUT VOLTAGE (VOLTS)
T
A
= 25°C
Figure 9. MC78PC18 Output Voltage versus
Input Voltage
Figure 10. MC78PC30 Output Voltage versus
Input Voltage
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Embedded System
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