MC78BC00(2006) データシートの表示（PDF） - ON Semiconductor
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MC78BC00 Datasheet PDF : 6 Pages
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MC78BC00 Series
Micropower Voltage Regulator
The MC78BC00 voltage regulators are specifically designed to be
used with an external power transistor to deliver high current with high
voltage accuracy and low quiescent current.
The MC78BC00 series are devices suitable for constructing
regulators with ultra−low dropout voltage and output current in the
range of several tens of mA to hundreds of mA. These devices have a
chip enable function, which minimizes the standby mode current
drain. Each of these devices contains a voltage reference unit, an error
amplifier, a driver transistor and feedback resistors. These devices are
available in the SOT−23, 5 pin surface mount packages.
These devices are ideally suited for battery powered equipment, and
power sources for hand−held audio instruments, communication
equipment and domestic appliances.
Features
• Ultra−Low Supply Current (50 mA)
• Standby Mode (0.2 mA)
• Ultra−Low Dropout Voltage (0.1 V with External Transistor and
IO = 100 mA)
• Excellent Line Regulation (Typically 0.1%/V)
• High Accuracy Output Voltage (±2.5%)
ORDERING INFORMATION
Device
Output
Voltage
Operating
Temperature Range
Package
MC78BC30NTR
3.0
MC78BC31NTR
3.1
MC78BC33NTR
3.3
MC78BC40NTR
MC78BC43NTR
4.0
TA = −30° to +80°C
SOT−23
4.3
MC78BC45NTR
4.5
MC78BC50NTR
5.0
1. Other voltages from 2.0 to 6.0 V, in 0.1 V increments, are available. Consult
factory for information.
2
Vin
Ext 4
3
VO
http://onsemi.com
VOLTAGE REGULATOR WITH
EXTERNAL POWER
TRANSISTOR
SOT−23
N SUFFIX
PLASTIC PACKAGE
1
CASE 1212
MARKING DIAGRAM
5
xx D
1
xx = MC78BC30NTR = K0
= MC78BC31NTR = K1
= MC78BC33NTR = K3
= MC78BC40NTR = L0
= MC78BC43NTR = L3
= MC78BC45NTR = L5
= MC78BC50NTR = M0
D = Date Code
PIN CONNECTIONS
Ground 1
5 CE
Input 2
Output 3
4 Ext
(Top View)
STANDARD APPLICATION
Q
CC
Vref
CE 5
This device contains 13 active transistors.
Figure 1. Representative Block Diagram
1
GND
© Semiconductor Components Industries, LLC, 2006
1
September, 2006 − Rev. 7
Input
2
4
3
MC78BCXX
Cin
1
5
Output
CO
Publication Order Number:
MC78BC00/D
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