ON Semiconductor 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. MICROPOWER ULTRA–LOW QUIESCENT CURRENT VOLTAGE REGULATORS SEMICONDUCTOR TECHNICAL DATA MC78FC00 Series Features: • • • • • • • • TAB 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%) 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) PIN CONNECTIONS ORDERING INFORMATION Device MC78FC30HT1 MC78FC33HT1 MC78FC40HT1 MC78FC50HT1 Output Voltage Operating Temperature Range Package 3.0 3.3 4.0 5.0 TA = –30° to +80°C SOT–89 1 Input 2 Output 3 Tab (Tab is connected to Pin 2) (Top View) Other voltages from 2.0 to 6.0 V, in 0.1 V increments, are available upon request. Consult factory for information. 2 Standard Application Input Representative Block Diagram Vin Ground 3 2 Output MC78FCXX 3 VO Cin 1 CO Vref 1 Gnd This device contains 11 active transistors. Semiconductor Components Industries, LLC, 2001 April, 2001 – Rev. 2 1 Publication Order Number: MC78FC00/D MC78FC00 Series MAXIMUM RATINGS (TC = 25°C, unless otherwise noted.) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ Symbol Value Unit Input Voltage VCC 10 Vdc Power Dissipation and Thermal Characteristics Maximum Power Dissipation Case 1213 (SOT–89) H Suffix Thermal Resistance, Junction–to–Ambient PD RθJA 300 333 mW °C/W Rating Operating Junction Temperature TJ 125 °C Operating Ambient Temperature TA –30 to +80 °C Storage Temperature Range Tstg –40 to +125 °C NOTE: ESD data available upon request. ELECTRICAL CHARACTERISTICS (Vin = VO + 1.0 V, IO = 10 mA, TJ = 25°C [Note 1], unless otherwise noted.) Characteristic Symbol 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) Min Typ Max 2.925 3.218 3.900 4.875 3.0 3.3 4.0 5.0 3.075 3.382 4.100 5.125 VO Unit V Line Regulation Vin = [VO + 1.0] V to 10 V, IO = 10 mA Regline – 0.1 – mV Load Regulation Vin = [VO + 1.0], IO = 1.0 to 10 mA Regload – 40 80 mV 50 65 65 80 80 100 100 120 – – – – – 0.5 0.7 – – – – 1.1 1.1 1.2 1.3 3.3 3.3 3.6 3.9 – ±100 – 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) IO Dropout Voltage IO = 40 mA Vin – VO 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 Output Voltage Temperature Coefficient TC NOTE: mA V µA ppm/°C 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. DEFINITIONS such that average chip temperature is not significantly affected. 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. 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 of low dissipation or by using pulse techniques Quiescent Bias Current – Current which is used to operate the regulator chip and is not delivered to the load. http://onsemi.com 2 MC78FC00 Series 0.8 5.0 TA = -30°C TA = 80°C 4.9 TA = 25°C 4.8 4.7 0 V in -V O , DROPOUT VOLTAGE (V) VO , OUTPUT VOLTAGE (V) 5.1 MC78FC50HT1 0 50 100 150 200 IO = 50 mA 0.6 0.4 IO = 10 mA 0.2 0 250 IO = 1.0 mA 0 1.0 2.0 3.0 4.0 5.0 6.0 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 0.8 V in -V O , DROPOUT VOLTAGE (V) MC78FC50HT1 1.3 1.1 0.9 0.7 0.5 -40 -20 0 20 40 60 80 100 MC78FC50HT1 0.6 TA = 80°C 0.4 TA = 25°C TA = -30°C 0.2 0 0 120 7.0 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) ICC, QUIESCENT CURRENT (mA) MC78FC00 Series TA = 25°C 9.0 8.0 Input Voltage 7.0 6.0 5.0 Output Voltage 4.0 3.0 2.0 1.0 0 0.5 1.0 1.5 2.0 2.5 3.0 t, TIME (ms) Figure 5. Line Transient Response http://onsemi.com 3 3.5 4.0 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 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. 2 Vin 3 VO MC78FC00 0.1 µF 0.1 µF 1 Gnd Gnd Figure 6. Typical Application MJD32C .033 µF 2 Vin MC78FC00 3 10 µF 0.1 µF 1 Figure 7. Current Boost Circuit http://onsemi.com 0.1 µF Gnd Gnd 4 VO 100 MC78FC00 Series PACKAGE DIMENSIONS H SUFFIX PLASTIC PACKAGE CASE 1213–01 (SOT–89) ISSUE O A D A2 C B D1 E1 E L1 B 0.10 B1 e M C B S A C S 2X 0.10 M C B S A S e1 http://onsemi.com 5 NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCING PER ASME Y14.5M, 1994. 3. DATUM C IS A SEATING PLANE. DIM A2 B B1 C D D1 E E1 e e1 L1 MILLIMETERS MIN MAX 1.40 1.60 0.37 0.57 0.32 0.52 0.30 0.50 4.40 4.60 1.50 1.70 --4.25 2.40 2.60 1.50 BSC 3.00 BSC 0.80 --- MC78FC00 Series Notes http://onsemi.com 6 MC78FC00 Series Notes http://onsemi.com 7 MC78FC00 Series ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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