MC78PC00 Series Low Noise 150 mA Low Drop Out (LDO) Linear Voltage Regulator The MC78PC00 are a series of CMOS linear voltage regulators with high output voltage accuracy, low supply current, low dropout voltage, and high Ripple Rejection. Each of these voltage regulators consists of an internal voltage reference, an error amplifier, resistors, a current limiting circuit and a chip enable circuit. The dynamic Response to line and load is fast, which makes these products ideally suited for use in hand−held communication equipment. The MC78PC00 series are housed in the SOT−23 5 lead package, for maximum board space saving. http://onsemi.com 5 1 SOT−23−5 N SUFFIX CASE 1212 MC78PC00 Features: • • • • • • • • • • • • Ultra−Low Supply Current: typical 35 mA in ON mode with no load. Standby Mode: typical 0.1 mA. Low Dropout Voltage: typical 0.2 V @ IOUT = 100 mA. High Ripple Rejection: typical 70 dB @ f = 1 kHz. Low Temperature−Drift Coefficient of Output Voltage: typical ±100 ppm/°C. Excellent Line Regulation: typical 0.05%/V. High Accuracy Output Voltage: ±2.0%. Fast Dynamic Response to Line and Load. Small Package: SOT−23 5 leads. Built−in Chip Enable circuit (CE input pin). Identical Pinout to the LP2980/1/2. Pb−Free Packages are Available PIN CONNECTIONS VIN • 2 CE 3 5 VOUT 2 3 4 N/C 4 DEVICE MARKING (4 digits are available for device marking) 1 2 • Power source for cellular phones (GSM, CDMA, TDMA), Cordless • GND 1 (Top View) MC78PC00 Applications: Phones (PHS, DECT) and 2−way radios. Power source for domestic appliances such as cameras, VCRs and camcorders. Power source for battery−powered equipment. 1 Marking Voltage Version K8 1.8 V F5 2.5 V F8 2.8 V G0 3.0 V G3 3.3 V J0 3 4 5.0 V Lot Number Block Diagram VIN MC78PCxx 1 VOUT Vref CURRENT LIMIT CE © Semiconductor Components Industries, LLC, 2005 Pin # Symbol Description 1 VIN 2 GND Input Pin 3 CE Chip Enable Pin 4 N/C No Connection 5 VOUT Output Pin Ground Pin ORDERING INFORMATION 2 3 June, 2005 − Rev. 6 PIN DESCRIPTION 5 1 GND See detailed ordering and shipping information in the package dimensions section on page 14 of this data sheet. Publication Order Number: MC78PC00/D MC78PC00 Series MAXIMUM RATINGS ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ Symbol Value Unit Input Voltage Rating VIN 9.0 V Input Voltage VCE −0.3 ~VIN +0.3 V Output Voltage VOUT −0.3 ~VIN +0.3 V Power Dissipation PD 250 mW Operating Temperature Range TA −40 to +85 °C Operating Junction Temperature TJ +125 °C Maximum Junction Temperature TJmax +150 °C Tstg −55 to +125 °C Storage Temperature Range Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. ELECTRICAL CHARACTERISTICS (TA = 25°C) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ Characteristic Symbol Min Typ Max 1.764 2.450 2.744 2.94 3.234 4.9 1.80 2.50 2.80 3.00 3.3 5.0 1.836 2.550 2.856 3.06 3.366 5.1 Unit Output Voltage (VIN = VOUT + 1.0 V, IOUT = 30 mA) MC78PC18 MC78PC25 MC78PC28 MC78PC30 MC78PC33 MC78PC50 VOUT V Nominal Output Current (VIN = VOUT + 1.0 V, VOUT = VOUT(nom) − 0.1 V) IOUT 150 − − mA Load Regulation (VIN = VOUT + 1.0 V, 1.0 mA ≤ IOUT ≤ 80 mA) DVOUT/DIOUT − 12 40 mV Supply Current in ON mode (VIN = VOUT + 1.0 V, IOUT = 0 mA) ISS − 35 70 mA Istandby − 0.1 1.0 mA Ripple Rejection (f = 1.0 kHz, Ripple 0.5 Vp−p, VIN = VOUT + 1.0 V) RR − 70 − dB Input Voltage VIN − − 8.0 V Output Voltage Temperature Coefficient (IOUT = 30 mA, −40°C ≤ TA ≤ +85°C) DVOUT/DT − ±100 − ppm/°C Short Circuit Current Limit (VOUT = 0 V) Ilim − 50 − mA CE Pull−down Resistance RPD 2.5 5.0 10 MW CE Input Voltage “H” (ON Mode) VIH 1.5 − VIN V CE Input Voltage “L” (OFF Mode) VIL 0 − 0.25 V Output Noise Voltage (f = 10 Hz to 100 kHz) en − 30 − mVrms Min Typ Max Unit − − − − − 0.60 0.35 0.24 0.20 0.17 1.40 0.70 0.35 0.30 0.26 − 0.05 0.20 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ Supply Current in OFF mode, i.e. VCE = GND (VIN = VOUT + 1.0 V, IOUT = 0 mA) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE VOUT (TA = 25°C) Characteristic Symbol Dropout Voltage (IOUT = 100 mA) 1.8 ≤ VOUT ≤ 1.9 2.0 ≤ VOUT ≤ 2.4 2.5 ≤ VOUT ≤ 2.7 2.8 ≤ VOUT ≤ 3.3 3.4 ≤ VOUT ≤ 6.0 VDIF V ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ DVOUT/DVIN Line Regulation (VOUT + 0.5 V ≤ VIN ≤ 8.0 V, IOUT = 30 mA) http://onsemi.com 2 %/V MC78PC00 Series OPERATION MC78PC00 VIN 1 5 VOUT ERROR AMP. R1 Vref CURRENT LIMIT 3 R2 2 CE GND In the MC78PC00, the output voltage VOUT is detected by R1, R2. The detected output voltage is then compared to the internal voltage reference by the error amplifier. Both a current limiting circuit for short circuit protection, and a chip enable circuit are included. http://onsemi.com 3 MC78PC00 Series TEST CIRCUITS 3 IN 1 VIN 0.1 mF CE MC78PCxx Series 2 3 OUT 5 VOUT IN IOUT 0.1 mF Figure 1. Standard Test Circuits 3 IN 1 VIN 3 OUT 5 VOUT IN GND 1 VIN IOUT P.G. 2 2 OUT 5 VOUT IOUT 2.2 mF GND Figure 2. Supply Current Test Circuit CE MC78PCxx Series MC78PCxx Series VIN ISS 2.2 mF GND 1 CE 1 mF 10 mF CE MC78PCxx Series 2 GND OUT 5 VOUT 10 mF I1 Figure 3. Ripple Rejection, Line Transient Response Test Circuit Figure 4. Load Transient Response Test Circuit http://onsemi.com 4 I2 MC78PC00 Series 3.5 1.8 VOUT, OUTPUT VOLTAGE (VOLTS) VOUT, OUTPUT VOLTAGE (VOLTS) 2.0 3.8 V 1.6 2.8 V 1.4 1.2 2.3 V 1.0 0.8 0.6 VIN = 2.1 V 0.4 TA = 25°C 0.2 0 100 3.5 V 2.0 VIN = 3.3 V 1.5 1.0 0.5 TA = 25°C 200 300 400 500 0 100 200 300 400 500 IOUT, OUTPUT CURRENT (mA) IOUT, OUTPUT CURRENT (mA) Figure 5. MC78PC18 Output Voltage versus Output Current Figure 6. MC78PC30 Output Voltage versus Output Current 4.5 6.0 6.0 V 4.0 3.5 VOUT, OUTPUT VOLTAGE (VOLTS) VOUT, OUTPUT VOLTAGE (VOLTS) 4.0 V 2.5 0 0 5.0 V 3.0 4.5 V 2.5 VIN = 4.3 V 2.0 1.5 1.0 TA = 25°C 0.5 0 7.0 V 5.0 6.0 V 4.0 3.0 VIN = 5.3 V 5.5 V 2.0 1.0 TA = 25°C 0 100 0 200 300 400 100 0 500 200 300 400 IOUT, OUTPUT CURRENT (mA) IOUT, OUTPUT CURRENT (mA) Figure 7. MC78PC40 (4.0 V) Output Voltage versus Output Current Figure 8. MC78PC50 Output Voltage versus Output Current 2.0 500 3.1 1.9 VOUT, OUTPUT VOLTAGE (VOLTS) VOUT, OUTPUT VOLTAGE (VOLTS) 5.0 V 3.0 IOUT = 1 mA 1.8 1.7 1.6 1.5 1.4 30 mA 1.3 TA = 25°C 50 mA 1.2 3.0 2.9 2.8 1.0 mA 2.7 30 mA 2.6 IOUT = 50 mA TA = 25°C 2.5 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 2.0 3.0 4.0 5.0 6.0 7.0 VIN, INPUT VOLTAGE (VOLTS) VIN, INPUT VOLTAGE (VOLTS) Figure 9. MC78PC18 Output Voltage versus Input Voltage Figure 10. MC78PC30 Output Voltage versus Input Voltage http://onsemi.com 5 8.0 MC78PC00 Series 5.5 VOUT, OUTPUT VOLTAGE (VOLTS) VOUT, OUTPUT VOLTAGE (VOLTS) 4.5 4.0 3.5 IOUT = 1.0 mA 3.0 30 mA 50 mA 2.5 2.0 3.0 TA = 25°C 4.0 IOUT = 1.0 mA 3.5 3.0 50 mA 4.0 5.0 6.0 7.0 2.0 8.0 TA = 25°C 30 mA 3.0 4.0 5.0 6.0 7.0 8.0 VIN, INPUT VOLTAGE (VOLTS) VIN, INPUT VOLTAGE (VOLTS) Figure 11. MC78PC40 (4.0 V) Output Voltage versus Input Voltage Figure 12. MC78PC50 Output Voltage versus Input Voltage 0.40 TA = 85°C VDIF, DROPOUT VOLTAGE (VOLTS) VDIF, DROPOUT VOLTAGE (VOLTS) 4.5 2.5 1.2 1.0 0.8 0.6 25°C 0.4 −40°C 0.2 0 TA = 85°C 0.35 0.30 25°C 0.25 −40°C 0.20 0.15 0.10 0.05 0 0 50 100 0 150 50 100 150 IOUT, OUTPUT CURRENT (mA) IOUT, OUTPUT CURRENT (mA) Figure 13. MC78PC18 Dropout Voltage versus Output Current Figure 14. MC78PC30 Dropout Voltage versus Output Current 0.40 0.40 0.35 VDIF, DROPOUT VOLTAGE (VOLTS) VDIF, DROPOUT VOLTAGE (VOLTS) 5.0 TA = 85°C 0.30 25°C 0.25 0.20 −40°C 0.15 0.10 0.05 0 0.35 0.30 TA = 85°C 0.25 25°C 0.20 0.15 −40°C 0.10 0.05 0 0 50 100 150 0 50 100 150 IOUT, OUTPUT CURRENT (mA) IOUT, OUTPUT CURRENT (mA) Figure 15. MC78PC40 (4.0 V) Dropout Voltage versus Output Current Figure 16. MC78PC50 Dropout Voltage versus Output Current http://onsemi.com 6 MC78PC00 Series 3.08 1.88 VIN = 2.8 V IOUT = 30 mA 1.86 VOUT, OUTPUT VOLTAGE (VOLTS) VOUT, OUTPUT VOLTAGE (VOLTS) 1.90 1.84 1.82 1.80 1.78 1.76 1.74 1.72 1.70 −50 −25 0 25 50 75 100 3.04 3.02 3.00 2.98 2.96 2.94 2.92 2.90 −50 −25 0 25 50 75 TA, TEMPERATURE (°C) Figure 17. MPC78PC18 Output Voltage versus Temperature Figure 18. MC78PC30 Output Voltage versus Temperature 100 5.10 4.08 VOUT, OUTPUT VOLTAGE (VOLTS) VOUT, OUTPUT VOLTAGE (VOLTS) VIN = 4.0 V IOUT = 10 mA 3.05 TA, TEMPERATURE (°C) 4.10 VIN = 5.0 V IOUT = 10 mA 4.06 4.04 4.02 4.00 3.98 3.96 3.94 3.92 3.90 −50 −25 0 25 50 75 100 5.08 VIN = 6.0 V IOUT = 10 mA 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 −50 −25 0 25 50 75 TA, TEMPERATURE (°C) TA, TEMPERATURE (°C) Figure 19. MC78PC40 (4.0 V) Output Voltage versus Temperature Figure 20. MC78PC50 Output Voltage versus Temperature 60 100 50 50 ISS , SUPPLY CURRENT (m A) ISS , SUPPLY CURRENT (m A) 3.06 40 30 20 10 40 30 20 10 TA = 25°C TA = 25°C 0 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 2.0 3.0 4.0 5.0 6.0 7.0 VIN, INPUT VOLTAGE (VOLTS) VIN, INPUT VOLTAGE (VOLTS) Figure 21. MC78PC18 Supply Current versus Input Voltage Figure 22. MC78PC30 Supply Current versus Input Voltage http://onsemi.com 7 8.0 MC78PC00 Series 50 ISS , SUPPLY CURRENT (m A) ISS , SUPPLY CURRENT (m A) 50 40 30 20 10 40 30 20 10 TA = 25°C TA = 25°C 0 0 3.0 4.0 5.0 6.0 7.0 8.0 2.0 4.0 5.0 6.0 7.0 VIN, INPUT VOLTAGE (VOLTS) Figure 23. MC78PC40 (4.0 V) Supply Current versus Input Voltage Figure 24. MC78PC50 Supply Current versus Input Voltage 50 50 45 45 40 35 30 25 20 −50 −25 0 25 50 75 35 30 25 −25 0 25 50 75 TA, TEMPERATURE (°C) TA, TEMPERATURE (°C) Figure 25. MC78PC30 Supply Current versus Temperature Figure 26. MC78PC40 (4.0 V) Supply Current versus Temperature 100 0.7 VDIF, DROPOUT VOLTAGE (VOLTS) 45 40 35 30 25 20 −50 8.0 40 20 −50 100 50 ISS , SUPPLY CURRENT (m A) 3.0 VIN, INPUT VOLTAGE (VOLTS) ISS , SUPPLY CURRENT (m A) ISS , SUPPLY CURRENT (m A) 2.0 −25 0 25 50 75 IOUT = 150 mA 0.6 0.5 TA = 25°C 0.4 100 mA 0.3 0.2 50 mA 0 10 mA 2.0 100 30 mA 0.1 3.0 4.0 5.0 TA, TEMPERATURE (°C) VOUT, OUTPUT VOLTAGE (VOLTS) Figure 27. MC78PC50 Supply Current versus Temperature Figure 28. Dropout Voltage versus Output Voltage http://onsemi.com 8 6.0 80 80 70 70 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) MC78PC00 Series 60 50 40 30 IOUT = 1.0 mA IOUT = 30 mA IOUT = 50 mA 20 VIN = 2.8 VDC + 0.5 Vp−p COUT = 1.0 mF 10 40 30 IOUT = 1.0 mA IOUT = 30 mA IOUT = 50 mA 20 VIN = 2.8 VDC + 0.5 Vp−p COUT = 1.0 mF 0 0.1 1.0 10 100 0.1 10 100 f, FREQUENCY (kHz) Figure 29. MC78PC18 Ripple Rejection versus Frequency Figure 30. MC78PC18 Ripple Rejection versus Frequency 80 80 70 70 60 50 40 30 IOUT = 1.0 mA IOUT = 30 mA IOUT = 50 mA 20 VIN = 4.0 VDC + 0.5 Vp−p COUT = 4.7 mF 10 1.0 f, FREQUENCY (kHz) RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 50 10 0 60 50 40 30 IOUT = 1.0 mA IOUT = 30 mA IOUT = 50 mA 20 VIN = 4.0 VDC + 0.5 Vp−p COUT = 10 mF 10 0 0 0.1 1.0 10 0.1 100 10 100 f, FREQUENCY (kHz) Figure 31. MC78PC30 Ripple Rejection versus Frequency Figure 32. MC78PC30 Ripple Rejection versus Frequency 80 80 70 70 60 50 40 30 IOUT = 1.0 mA IOUT = 30 mA IOUT = 50 mA 20 VIN = 5.0 VDC + 0.5 Vp−p COUT = 4.7 mF 10 1.0 f, FREQUENCY (kHz) RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 60 60 50 40 30 VIN = 5.0 VDC + 0.5 Vp−p COUT = 10 mF 10 0 IOUT = 1.0 mA IOUT = 30 mA IOUT = 50 mA 20 0 0.1 1.0 10 100 0.1 1.0 10 f, FREQUENCY (kHz) f, FREQUENCY (kHz) Figure 33. MC78PC40 (4.0 V) Ripple Rejection versus Frequency Figure 34. MC78PC40 (4.0 V) Ripple Rejection versus Frequency http://onsemi.com 9 100 MC78PC00 Series RR, RIPPLE REJECTION (dB) 80 70 60 50 40 30 IOUT = 1.0 mA IOUT = 30 mA IOUT = 50 mA 20 VIN = 6.0 VDC + 0.5 Vp−p COUT = 4.7 mF 10 0 0.1 1.0 10 100 f, FREQUENCY (kHz) 80 80 70 70 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) Figure 35. MC78PC50 Ripple Rejection versus Frequency 60 50 40 30 IOUT = 1.0 mA IOUT = 30 mA IOUT = 50 mA 20 VIN = 6.0 VDC + 0.5 Vp−p COUT = 10 mF 10 60 50 40 30 f = 400 Hz f = 1.0 kHz f = 10 kHz 20 10 0 0 0.1 1.0 10 100 3.1 3.2 3.3 3.4 3.5 f, FREQUENCY (kHz) VIN, INPUT VOLTAGE (VOLTS) Figure 36. MC78PC50 Ripple Rejection versus Frequency Figure 37. MC78PC30 Ripple Rejection versus Input Voltage (DC Bias) 80 80 IOUT = 10 mA COUT = 10 mF 70 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) IOUT = 1.0 mA COUT = 10 mF 60 50 40 30 f = 400 Hz f = 1.0 kHz f = 10 kHz 20 10 IOUT = 50 mA COUT = 10 mF 70 60 50 40 30 f = 400 Hz f = 1.0 kHz f = 10 kHz 20 10 0 0 3.1 3.2 3.3 3.4 3.1 3.5 3.2 3.3 3.4 VIN, INPUT VOLTAGE (VOLTS) VIN, INPUT VOLTAGE (VOLTS) Figure 38. MC78PC30 Ripple Rejection versus Input Voltage (DC Bias) Figure 39. MC78PC30 Ripple Rejection versus Input Voltage (DC Bias) http://onsemi.com 10 3.5 MC78PC00 Series 5.0 INPUT VOLTAGE 4.0 3.2 3.1 3.0 OUTPUT VOLTAGE 3.0 2.0 tr = tf = 5.0 ms COUT = 4.7 mF (TANTALUM) IOUT = 30 mA 2.9 2.8 20 40 60 80 100 3.3 5.0 INPUT VOLTAGE 4.0 3.2 3.1 3.0 OUTPUT VOLTAGE 3.0 2.0 tr = tf = 5.0 ms COUT = 6.8 mF (TANTALUM) IOUT = 30 mA 2.9 0 120 2.8 20 0 40 60 80 100 1.0 0 120 t, TIME (ms) t, TIME (ms) Figure 40. MC78PC30 Line Transient Response Figure 41. MC78PC30 Line Transient Response 3.3 5.0 INPUT VOLTAGE 3.2 4.0 3.1 3.0 OUTPUT VOLTAGE 3.0 2.0 tr = tf = 5.0 ms COUT = 10 mF (TANTALUM) IOUT = 30 mA 2.9 2.8 0 20 40 60 80 100 3.4 1.0 0 150 VOUT, OUTPUT VOLTAGE (VOLTS) 6.0 3.3 100 OUTPUT CURRENT 3.2 50 3.1 0 OUTPUT VOLTAGE −50 3.0 CIN = 1.0 mf (TANTALUM) COUT = 4.7 mF (TANTALUM) VIN = 4.0 V 2.9 −100 −150 2.8 120 0 2.0 4.0 6.0 8.0 10 12 14 16 18 20 t, TIME (ms) t, TIME (ms) Figure 42. MC78PC30 Line Transient Response Figure 43. MC78PC30 Load Transient Response 3.2 50 3.1 0 OUTPUT VOLTAGE −50 3.0 CIN = 1.0 mf (TANTALUM) COUT = 6.8 mF (TANTALUM) VIN = 4.0 V 2.9 −100 −150 2.8 0 2.0 4.0 6.0 8.0 10 12 14 16 18 20 150 3.3 100 OUTPUT CURRENT 3.2 50 3.1 0 OUTPUT VOLTAGE −50 3.0 CIN = 1.0 mf (TANTALUM) COUT = 10 mF (TANTALUM) VIN = 4.0 V 2.9 −100 −150 2.8 0 2.0 4.0 6.0 8.0 10 12 14 16 18 20 t, TIME (ms) t, TIME (ms) Figure 44. MC78PC30 Load Transient Response Figure 45. MC78PC30 Load Transient Response http://onsemi.com 11 IOUT, OUTPUT CURRENT (mA) 100 OUTPUT CURRENT IOUT, OUTPUT CURRENT (mA) 3.3 3.4 VOUT, OUTPUT VOLTAGE (VOLTS) 150 VOUT, OUTPUT VOLTAGE (VOLTS) 3.4 IOUT, OUTPUT CURRENT (mA) 3.4 V IN, INPUT VOLTAGE (VOLTS) VOUT, OUTPUT VOLTAGE (VOLTS) 0 1.0 6.0 V IN, INPUT VOLTAGE (VOLTS) 3.3 3.4 VOUT, OUTPUT VOLTAGE (VOLTS) 6.0 V IN, INPUT VOLTAGE (VOLTS) VOUT, OUTPUT VOLTAGE (VOLTS) 3.4 MC78PC00 Series APPLICATION HINTS When using these circuits, please be sure to observe the following points: • Phase compensation is made for securing stable operation even if the load current varies. For this reason, be sure to use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance) as described in the graphs on page 11. On page 11, the relations between IOUT (Output Current) 3 and ESR of Output Capacitor are shown. The conditions where the white noise level is under 40 mV (Avg.) are marked by the shaded area in the graph. (note: When additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase compensation, there is a possibility that the operation will be unstable. Because of this, test these circuits with as same external components as ones to be used on the PCB). CE 5 1 VIN VOUT CERAMIC CAPACITOR 1.0 mF 4.0 V 2 S.A. CERAMIC CAPACITOR GND ESR SPECTRUM ANALYSER IOUT MEASURING CONDITIONS: (1) FREQUENCY RANGE: 10 Hz TO 1.0 MHz MEASURING CONDITIONS: (2) TEMPERATURE: 25°C Figure 46. Measuring Circuit for White Noise: MC78PC30 • Set external components, especially the Output Capacitor, as close as possible to the circuit, and make the wiring as short as possible. • Please be sure the Vin and GND lines are sufficiently wide. When the impedance of these lines is high, there is a chance to pick up noise or to malfunction. • Connect the capacitor with a capacitance of 1.0 mF or more between Vin and GND as close as possible to Vin or GND. CE IN VIN MC78PCxx + CAP. OUT VOUT + GND CAP. Figure 47. Typical Application http://onsemi.com 12 MC78PC00 Series 10 10 ESR (W ) 100 ESR (W ) 100 1.0 1.0 0.1 0.1 50 100 150 50 0 100 IOUT, OUTPUT CURRENT (mA) IOUT, OUTPUT CURRENT (mA) Figure 48. Ceramic Capacitor 4.7 mF Figure 49. Ceramic Capacitor 6.8 mF 100 10 ESR (W ) 0 1.0 0.1 0 50 100 IOUT, OUTPUT CURRENT (mA) Figure 50. Ceramic Capacitor 10 mF http://onsemi.com 13 150 150 MC78PC00 Series TAPE AND REEL INFORMATION Component Taping Orientation for 5L SOT−23 Devices USER DIRECTION OF FEED DEVICE MARKING PIN 1 Standard Reel Component Orientation for TR Suffix Device (Mark Right Side Up) Tape & Reel Specifications Table Package 5L SOT−23 Tape Width (W) 8 mm Pitch (P) Part Per Full Reel 4 mm 3000 Reel Diameter 7 inches ORDERING INFORMATION Device Package MC78PC18NTR SOT−23 5 Leads MC78PC18NTRG SOT−23 5 Leads (Pb−Free) MC78PC25NTR SOT−23 5 Leads MC78PC25NTRG SOT−23 5 Leads (Pb−Free) MC78PC28NTR SOT−23 5 Leads MC78PC28NTRG SOT−23 5 Leads (Pb−Free) MC78PC30NTR SOT−23 5 Leads MC78PC30NTRG SOT−23 5 Leads (Pb−Free) MC78PC33NTR SOT−23 5 Leads MC78PC33NTRG SOT−23 5 Leads (Pb−Free) MC78PC50NTR SOT−23 5 Leads MC78PC50NTRG SOT−23 5 Leads (Pb−Free) Shipping † 3000 Units/Tape & Reel †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. Other voltages are available. Consult your ON Semiconductor representative. http://onsemi.com 14 MC78PC00 Series PACKAGE DIMENSIONS SOT−23−5 N SUFFIX PLASTIC PACKAGE CASE 1212−01 ISSUE O A 5 E 1 A2 0.05 S B D A1 4 2 NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DATUM C IS A SEATING PLANE. DIM A1 A2 B C D E E1 e e1 L L1 L 3 E1 L1 B e e1 C 5X 0.10 M C B S A C S SOLDERING FOOTPRINT* 0.7 MAX. 1.0 2.4 0.95 0.95 (Unit: mm) 1.9 Figure 51. SOT−23−5 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. http://onsemi.com 15 MILLIMETERS MIN MAX 0.00 0.10 1.00 1.30 0.30 0.50 0.10 0.25 2.80 3.00 2.50 3.10 1.50 1.80 0.95 BSC 1.90 BSC 0.20 −−− 0.45 0.75 MC78PC00 Series 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. 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