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MC78FC00 Series Micropower Voltage Regulator
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.
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MICROPOWER ULTRA-LOW QUIESCENT CURRENT VOLTAGE REGULATORS
TAB 1
* * * * * * * * *
Ultra-Low Quiescent Current of 1.1 mA Typical Ultra-Low Dropout Voltage (100 mV at 10 mA) Large Output Current (up to 120 mA) Excellent Line Regulation (0.1%) 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) These are Pb-Free Devices
SOT-89 H SUFFIX CASE 1213
MARKING DIAGRAM
X X
TT Vin 2 3 VO X T = Device Code = Traceability Information
PIN CONNECTIONS
Vref 1 This device contains 11 active transistors. GND Output 3 (Top View) Ground Input 1 2 Tab (Tab is connected to Pin 2)
Figure 1. Representative Block Diagram
STANDARD APPLICATION
Input Cin 2 MC78FCXX 1 CO 3 Output
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
ORDERING INFORMATION
See detailed ordering, marking, and shipping information on page 4 of this data sheet.
(c) Semiconductor Components Industries, LLC, 2009
December, 2009 - Rev. 7
1
Publication Order Number: MC78FC00/D
MC78FC00 Series
MAXIMUM RATINGS (TC = 25C, unless otherwise noted.)
Rating Input Voltage Symbol VCC Value 10 Unit Vdc
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Power Dissipation and Thermal Characteristics Maximum Power Dissipation Case 1213 (SOT-89) H Suffix Thermal Resistance, Junction-to-Ambient Operating Junction Temperature Operating Ambient Temperature Storage Temperature Range mW PD RqJA TJ TA 900 111 125 C/W C C C -30 to +80 Tstg -40 to +125 Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. ESD data available upon request.
ELECTRICAL CHARACTERISTICS (Vin = VO + 1.0 V, IO = 10 mA, TJ = 25C [Note 2], unless otherwise noted.)
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Output Voltage 30HT1 Suffix (Vin = 5.0 V) 33HT1 Suffix (Vin = 6.0 V) 40HT1 Suffix (Vin = 7.0 V) 50HT1 Suffix (Vin = 8.0 V) VO V 2.925 3.218 3.900 4.875 - - 3.0 3.3 4.0 5.0 0.1 40 3.075 3.382 4.100 5.125 -
Characteristic
Symbol
Min
Typ
Max
Unit
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Line Regulation Vin = [VO + 1.0] V to 10 V, IO = 10 mA Load Regulation Vin = [VO + 1.0], IO = 1.0 to 10 mA Output Current 30HT1 Suffix (Vin = 5.0 V) 33HT1 Suffix (Vin = 6.0 V) 40HT1 Suffix (Vin = 7.0 V) 50HT1 Suffix (Vin = 8.0 V) Dropout Voltage IO = 40 mA Regline mV mV mA Regload IO 80 50 65 65 80 - 80 100 100 120 0.5 - - - -
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Quiescent Current 30HT1 Suffix (Vin = 5.0 V) 33HT1 Suffix (Vin = 5.0 V) 40HT1 Suffix (Vin = 6.0 V) 50HT1 Suffix (Vin = 7.0 V) ICC - - - - - 1.1 1.1 1.2 1.3 3.3 3.3 3.6 3.9 - mA
Vin - VO
0.7
V
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Output Voltage Temperature Coefficient TC 100 ppm/C 2. 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. 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. Quiescent Bias Current - Current which is used to operate the regulator chip and is not delivered to the load.
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MC78FC00 Series
5.1 V in -V O , DROPOUT VOLTAGE (V) VO , OUTPUT VOLTAGE (V) 5.0 TA = 80C 4.9 4.8 4.7 0 TA = 25C TA = -30C 0.8 IO = 50 mA MC78FC00 Series TA = 25C
0.6
0.4
0.2 IO = 1.0 mA 0 1.0
IO = 10 mA
MC78FC50HT1 0 50 100 150 200 250
0
2.0
3.0
4.0
5.0
6.0
7.0
IO, OUTPUT CURRENT (mA)
Vreg, SET OUTPUT VOLTAGE (V)
Figure 1. Output Voltage versus Output Current
Figure 2. Dropout versus Set Output Voltage
1.5 1.3 1.1 0.9 0.7 0.5 -40 V in -V O , DROPOUT VOLTAGE (V) ICC, QUIESCENT CURRENT (mA) MC78FC50HT1
0.8 MC78FC50HT1 0.6
TA = 80C
0.4
TA = 25C TA = -30C
0.2
-20
0
20
40
60
80
100
120
0 0
20
40
60
80
100
TA, AMBIENT TEMPERATURE (C)
IO, OUTPUT CURRENT (mA)
Figure 3. Quiescent Current versus Temperature
Figure 4. Dropout Voltage versus Output Current
INPUT VOLTAGE/OUTPUT VOLTAGE (V)
9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 0.5 1.0 1.5 2.0 t, TIME (ms) 2.5 3.0 3.5 4.0 Output Voltage Input Voltage
Figure 5. Line Transient Response
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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 mF 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 25C. 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 -30C, 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 +85C 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 W must be observed over temperature to maintain stability. 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.
Vin 0.1 mF
2 MC78FC00
3
VO 0.1 mF
1
GND
GND
Figure 6. Typical Application
MJD32C .033 mF Vin 100 10 mF GND 0.1 mF 1 0.1 mF GND 2 MC78FC00 3 VO
Figure 7. Current Boost Circuit
ORDERING INFORMATION
Device MC78FC30HT1G MC78FC33HT1G MC78FC40HT1G MC78FC50HT1G Device Marking 0K 3K 0L 0M Output Voltage 3.0 3.3 4.0 5.0 TA = -30 to +80C SOT-89 (Pb-Free) 1000 / Tape & Reel Operating Temperature Range Package Shipping
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. NOTE: Other voltages from 2.0 to 6.0 V, in 0.1 V increments, are available upon request. Consult factory for information.
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MC78FC00 Series
PACKAGE DIMENSIONS
SOT-89 (3-LEAD) H SUFFIX PLASTIC PACKAGE CASE 1213-02 ISSUE C
-A- F
C J
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETERS 3. 1213-01 OBSOLETE, NEW STANDARD 1213-02. MILLIMETERS MIN MAX 4.40 4.60 2.40 2.60 1.40 1.60 0.37 0.57 0.32 0.52 1.50 1.83 1.50 BSC 3.00 BSC 0.30 0.50 0.80 ----4.25 INCHES MIN MAX 0.173 0.181 0.094 0.102 0.055 0.063 0.015 0.022 0.013 0.020 0.059 0.072 0.059 BSC 0.118 BSC 0.012 0.020 0.031 ----0.167
L K D
-B-
0.10 G H E
2 PL
M
TB
S
A
S
-T-
SEATING PLANE
0.10
M
TB
S
A
S
DIM A B C D E F G H J K L
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC 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 SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81-3-5773-3850 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative
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MC78FC00/D

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