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MC78BC33NTR の電気的特性と機能

MC78BC33NTRのメーカーはONです、この部品の機能は「Micropower Voltage Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 MC78BC33NTR
部品説明 Micropower Voltage Regulator
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MC78BC33NTR Datasheet, MC78BC33NTR PDF,ピン配置, 機能
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
Other voltages from 2.0 to 6.0 V, in 0.1 V increments, are available. Consult
factory for information.
Ext 4
2
Vin
3
VO
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VOLTAGE REGULATOR
WITH EXTERNAL POWER
TRANSISTOR
5
1
SOT-23
N SUFFIX
PLASTIC PACKAGE
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
© Semiconductor Components Industries, LLC, 2003
January, 2003 - Rev. 4
1
Gnd
1
Input 2
4
3
MC78BCXX
Cin 1
5
Output
CO
Publication Order Number:
MC78BC00/D

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MC78BC33NTR pdf, ピン配列
MC78BC00 Series
DEFINITIONS
Dropout Voltage - The input/output voltage differential at
which the regulator output no longer maintains regulation
against further reductions in input voltage. Measured when
the output drops 100 mV below its nominal value (which is
measured at 1.0 V differential), dropout voltage is affected
by junction temperature, load current and minimum input
supply requirements.
Line Regulation - The change in output voltage for a
change in input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that average chip temperature is not significantly
affected.
Load Regulation - The change in output voltage for a
change in load current at constant chip temperature.
Maximum Power Dissipation - The maximum total device
dissipation for which the regulator will operate within
specifications.
Supply Current - Current which is used to operate the
regulator chip and is not delivered to the load.
3.2
IO = 0 mA
3.0
2.8 IO = 100 mA
IO = 500 mA
2.6
2.4 MC78BC30NTR
TA = 25°C
2.2
2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
Vin, INPUT VOLTAGE (V)
Figure 1. Output Voltage versus Input Voltage
4.962
4.958
Vin = 6.0 V
4.954
Vin = 5.1 V
4.950
4.946
4.942
0
MC78BC50NTR
& MJD32C
TA = 25°C
100 200 300 400
IO, OUTPUT CURRENT (mA)
500
600
Figure 2. Output Voltage versus Output Current
0.50
0.40 TA = 80°C
0.30
TA = 25°C
0.20
0.10 TA = −30°C
MC78BC50NTR & MJD32C
0
0 200 400 600
800
IO, OUTPUT CURRENT (mA)
1000
1200
Figure 3. Dropout Voltage versus Output Current
60
50
40
30
20
CL = 10 mF
IO = 200 mA
10 TA = 25°C
MC78BC50NTR & MJD32C
0
1.0 k 10 k 100 k
1.0 M
f, FREQUENCY (Hz)
10 M
Figure 4. Ripple Rejection as a
Function of Frequency
100 M
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MC78BC33NTR 電子部品, 半導体
MC78BC00 Series
External PNP Transistor
The external pin of this IC is protected by a current limit
circuit from the destruction caused by excess current. The
R2 resistor shown in Figure 10 is used for the protection of
the external transistor, although this circuit can operate
without the resistor. Resistor R2 should be determined via
the input voltage, output voltage, output current,
temperature and the HFE of the external pass transistor.
MJD32C
In
Out
R1 10 mF
.033 mF
R2
4 Ext
3 VO
MC78BCXXNTR
Figure 10. External PNP
MJD32C
10 k .033 mF
In VDD
2
4
Ext
VO
3
10 mF
MC78BC50NTR
Gnd CE
15
Figure 11. Typical Application
Out
5.0 V
10 mF
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部品番号部品説明メーカ
MC78BC33NTR

VOLTAGE REGULATOR WITH EXTERNAL POWER TRANSISTOR

Motorola Semiconductors
Motorola Semiconductors
MC78BC33NTR

Micropower Voltage Regulator

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