MC78FC33HT1 [MOTOROLA]
MICROPOWER ULTRA.LOW QUIESCENT CURRENT VOLTAGE REGULATORS; 微功耗ULTRA.LOW静态电流稳压器
| 型号： | MC78FC33HT1 |
| 厂家： | 
MOTOROLA |
| 描述： | MICROPOWER ULTRA.LOW QUIESCENT CURRENT VOLTAGE REGULATORS |
| 文件： | 总4页 (文件大小：94K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Order this document by MC78FC00/D
The MC78FC00 series voltage regulators are specifically designed for
use as a power source for video instruments, handheld communication
equipment, and battery powered equipment.
The MC78FC00 series voltage regulator ICs feature a high accuracy
output voltage and ultra–low quiescent current. Each device contains a
voltage reference unit, an error amplifier, a driver transistor, and resistors for
setting output voltage, and a current limit circuit. These devices are available
in SOT–89 surface mount packages, and allow construction of an efficient,
constant voltage power supply circuit.
MICROPOWER ULTRA–LOW
QUIESCENT CURRENT
VOLTAGE REGULATORS
SEMICONDUCTOR
TECHNICAL DATA
MC78FC00 Series Features:
• Ultra–Low Quiescent Current of 1.1 µA Typical
• Ultra–Low Dropout Voltage (100 mV at 10 mA)
• Large Output Current (up to 120 mA)
• Excellent Line Regulation (0.1%)
TAB
• Wide Operating Voltage Range (2.0 V to 10 V)
• High Accuracy Output Voltage (±2.5%)
• Wide Output Voltage Range (2.0 V to 6.0 V)
• Surface Mount Package (SOT–89)
1
H SUFFIX
PLASTIC PACKAGE
CASE 1213
(SOT–89)
ORDERING INFORMATION
Output
Voltage
Operating
Temperature Range
Device
Package
MC78FC30HT1
MC78FC33HT1
MC78FC40HT1
MC78FC50HT1
3.0
3.3
4.0
5.0
T
A
= –30° to +80°C
SOT–89
PIN CONNECTIONS
Other voltages from 2.0 to 6.0 V, in 0.1 V increments, are available upon request. Consult
factory for information.
1
2
3
Ground
Input
Tab
(Tab is connected
to Pin 2)
Representative Block Diagram
Output
2
3
(Top View)
V
V
in
O
Standard Application
Input
Output
3
2
MC78FCXX
V
ref
C
C
O
in
1
1
Gnd
This device contains 11 active transistors.
This document contains information on a new product. Specifications and information herein
Motorola, Inc. 1996
Rev 0
are subject to change without notice.
MC78FC00 Series
MAXIMUM RATINGS (T = 25°C, unless otherwise noted.)
C
Rating
Symbol
Value
Unit
Input Voltage
V
CC
10
Vdc
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation
Case 1213 (SOT–89) H Suffix
Thermal Resistance, Junction–to–Ambient
P
300
333
mW
°C/W
D
R
θJA
Operating Junction Temperature
Operating Ambient Temperature
Storage Temperature Range
T
125
°C
°C
°C
J
T
A
–30 to +80
–40 to +125
T
stg
NOTE: ESD data available upon request.
ELECTRICAL CHARACTERISTICS (V = V + 1.0 V, I = 10 mA, T = 25°C [Note 1], unless otherwise noted.)
in
O
O
J
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage
30HT1 Suffix (V = 5.0 V)
V
O
V
2.925
3.218
3.900
4.875
3.0
3.3
4.0
5.0
3.075
3.382
4.100
5.125
in
33HT1 Suffix (V = 6.0 V)
in
40HT1 Suffix (V = 7.0 V)
in
50HT1 Suffix (V = 8.0 V)
in
Line Regulation
Reg
–
0.1
–
mV
mV
mA
line
V
= [V + 1.0] V to 10 V, I = 10 mA
O O
in
Load Regulation
= [V + 1.0], I = 1.0 to 10 mA
Reg
–
40
80
load
V
in
Output Current
30HT1 Suffix (V = 5.0 V)
O
O
I
O
50
65
65
80
80
–
–
–
–
in
33HT1 Suffix (V = 6.0 V)
in
40HT1 Suffix (V = 7.0 V)
50HT1 Suffix (V = 8.0 V)
in
100
100
120
in
Dropout Voltage
V
– V
CC
–
0.5
0.7
V
in
O
I
O
= 40 mA
Quiescent Current
30HT1 Suffix (V = 5.0 V)
33HT1 Suffix (V = 5.0 V)
in
40HT1 Suffix (V = 6.0 V)
I
µA
–
–
–
–
1.1
1.1
1.2
1.3
3.3
3.3
3.6
3.9
in
in
50HT1 Suffix (V = 7.0 V)
in
Output Voltage Temperature Coefficient
T
C
–
±100
–
ppm/°C
NOTE: 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
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.
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.
Line Regulation – The change in output voltage for a change
in input voltage. The measurement is made under conditions
Quiescent Bias Current – Current which is used to operate
the regulator chip and is not delivered to the load.
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applicationsintended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
ordeathmayoccur. ShouldBuyerpurchaseoruseMotorolaproductsforanysuchunintendedorunauthorizedapplication,BuyershallindemnifyandholdMotorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and
Opportunity/Affirmative Action Employer.
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
2
MOTOROLA ANALOG IC DEVICE DATA
MC78FC00 Series
Figure 1. Output Voltage versus Output Current
Figure 2. Dropout versus Set Output Voltage
5.1
5.0
4.9
4.8
4.7
0
0.8
0.6
0.4
MC78FC00 Series
T
= 25°C
A
I
= 50 mA
O
T
= –30
°C
A
T
= 80°C
A
T
= 25°C
A
I
= 10 mA
0.2
0
O
MC78FC50HT1
50
I
= 1.0 mA
1.0
O
0
100
150
200
250
0
2.0
3.0
4.0
5.0
6.0
7.0
I
, OUTPUT CURRENT (mA)
V , SET OUTPUT VOLTAGE (V)
reg
O
Figure 3. Quiescent Current versus Temperature
Figure 4. Dropout Voltage versus Output Current
1.5
1.3
1.1
0.9
0.7
0.5
0.8
MC78FC50HT1
MC78FC50HT1
0.6
T
= 80°C
A
0.4
0.2
0
T
= 25°C
A
T
= –30°C
A
–40
–20
0
20
40
60
80
C)
100
120
0
20
40
I , OUTPUT CURRENT (mA)
O
60
80
100
T , AMBIENT TEMPERATURE (
A
°
Figure 5. Line Transient Response
9.0
8.0
Input Voltage
7.0
6.0
5.0
4.0
3.0
2.0
Output Voltage
1.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
t, TIME (ms)
3
MOTOROLA ANALOG IC DEVICE DATA
MC78FC00 Series
APPLICATIONS INFORMATION
Introduction
The MC78FC00 micropower voltage regulators are
specifically designed with internal current limiting and low
quiescent current making them ideal for battery powered
applications. An input bypass capacitor is recommended if
the regulator is located an appreciable distance (≥ 4 inches)
from the input voltage source. These regulators require
0.1 µF capacitance between the output terminal and ground
for stability. Most types of aluminum, tantalum or multilayer
ceramic will perform adequately. Solid tantalums or other
appropriate capacitors are recommended for operation
below 25°C. The bypass capacitors should be mounted with
the shortest possible leads or track lengths directly across
the regulator input and output terminals.
With economical electrolytic capacitors, cold temperature
operation can pose a serious stability problem. As the
electrolyte freezes, around –30°C, the capacitance will
decrease and the equivalent series resistance (ESR) will
increase drastically, causing the circuit to oscillate. Quality
electrolytic capacitors with extended temperature ranges of
–40° to +85°C are readily available. Solid tantalum
capacitors may be the better choice if small size is a
requirement. However, a maximum ESR limit of 3.0 Ω must
be observed over temperature to maintain stability.
Figure 6. Typical Application
2
3
V
V
O
in
MC78FC00
0.1 µF
0.1 µF
1
Gnd
Gnd
Figure 7. Current Boost Circuit
MJD32C
.033 µF
2
3
V
V
O
in
MC78FC00
100
1
10 µF
0.1
µF
0.1 µF
Figure 6 is a typical circuit application. Figure 7 is a current
boost circuit which can deliver more than 600 mA. The circuit
has no current limiting and the external transistor must be
rated for the expected power dissipation.
Gnd
Gnd
OUTLINE DIMENSIONS
H SUFFIX
PLASTIC PACKAGE
CASE 1213
(SOT–89)
ISSUE O
NOTES:
1. DIMENSIONS ARE IN MILLIMETERS.
A
D
A2
2. INTERPRET DIMENSIONS AND TOLERANCING
PER ASME Y14.5M, 1994.
3. DATUM C IS A SEATING PLANE.
C
B
D1
MILLIMETERS
DIM
A2
B
B1
C
D
D1
E
E1
e
e1
L1
MIN
1.40
0.37
0.32
0.30
4.40
1.50
–––
MAX
1.60
0.57
0.52
0.50
4.60
1.70
4.25
2.60
E1
E
L1
B
C
M
S
S
0.10
C
B
A
2.40
1.50 BSC
3.00 BSC
0.80 –––
B1 2X
0.10
e
M
S
S
C
B
A
e1
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MC78FC00/D
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