Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR General Description Features The AS7805A is a three terminal positive regulator designed for a wide variety of applications including local, on-card regulation. · · · The AS7805A is complete with internal current limiting, thermal shutdown protection, and safe-area compensation which make it virtually immune from output overload. If adequate heat sinking is provided, this IC can deliver output current up to 1A. · · · · · The AS7805A is available in TO-220-3 and TO-252-2 (1) packages. Applications · · · · AS7805A Output Current up to 1A Fixed Output Voltage of 5V Output Voltage Accuracy of ±4% over the Full Temperature Range Internal Short Circuit Current Limiting Internal Thermal Overload Protection Output Transistor Safe-area Protection Low Load Regulation Stable Performance in High Temperature High Efficiency Linear Regulator Post Regulation for Switching Supply Microprocessor Power Supply Mother Board TO-252-2 (1) TO-220-3 Figure 1. Package Types of AS7805A Mar. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 1 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Pin Configuration T Package (TO-220-3) D Package (TO-252-2 (1) ) 3 OUTPUT GND 2 GND INPUT 1 INPUT 3 OUTPUT 2 1 Figure 2. Pin Configuration of AS7805A (Top View) Pin Description Pin Number Pin Name Function 1 INPUT Voltage Input 2 GND Ground 3 OUTPUT Voltage Output Mar. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 2 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Functional Block Diagram 1 R9 Q9 INPUT D1 Zener Q14 R16 Q21 Q24 R20 C1 R1 R21 Q18 R17 R12 3 Q6 Q3 Q22 R3 Q11 OUTPUT R2 2 Q10 R18 R7 Q7 Q1 R23 Q4 Q16 R4 R14 Q8 R11 R5 R15 R6 Q23 Q13 Q5 Q2 Q15 R19 C2 Q19 Q17 Q12 R2 R8 Q20 R13 R10 2 GND Figure 3. Functional Block Diagram of AS7805A Mar. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 3 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Ordering Information - AS7805A E1: Lead Free Circuit Type TR: Tape and Reel Blank: Tube Package T: TO-220-3 D: TO-252-2 (1) Package Temperature Range TO-220-3 -40 to 125oC TO-252-2 (1) -40 to 125oC Part Number Marking ID Packing Type AS7805AT-E1 AS7805AT-E1 Tube AS7805AD-E1 AS7805AD-E1 Tube AS7805ADTR-E1 AS7805AD-E1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Mar. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 4 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit VIN 36 V TLEAD 260 Power Dissipation PD Internally Limited Operating Junction Temperature TJ 150 TSTG -65 to 150 Input Voltage Lead Temperature (Soldering, 10sec) Storage Temperature Range Thermal Resistance θJA o C W o C oC TO-220-3 60 TO-252-2 (1) 100 oC/W ESD (Human Body Model) ESD 6000 V ESD (Machine Model) ESD 500 V Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Input Voltage Operating Junction Temperature Range Symbol Min VIN TJ -40 Mar. 2007 Rev. 1. 1 Max Unit 25 V 125 oC BCD Semiconductor Manufacturing Limited 5 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Electrical Characteristics VIN=10V, IOUT=1A, TJ=-40 to 125oC, unless otherwise specified. Parameter Symbol Conditions TJ=25oC Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change VOUT VRLINE VRLOAD IQ ∆IQ IOUT=5mA to 1A, VIN=7.5V to 20V, PD≤15W VIN=7.5V to 20V, IOUT=500mA, TJ=25oC VIN=7.5V to 20V, IOUT=500mA, TJ=75oC Min Typ Max 4.9 5 5.1 Unit V 4.8 5.2 25 50 mV 15 40 mV VIN=10V, IOUT=5mA to 1A, TJ=25oC 20 50 mV VIN=10V, IOUT=0 3.2 6 mA VIN=8V to 25V, IOUT=500mA, TJ=25oC 0.3 0.8 IOUT=5mA to 1A, TJ=25oC 0.08 0.5 mA Ripple Rejection PSRR VIN=8V to 18V, f=120Hz, IOUT=500mA 70 dB Dropout Voltage VDROP ∆VOUT=1%, IOUT=1A, TJ=25oC 2 V Output Noise Voltage NO f=10Hz to 100kHz, TA=25oC 10 µV/VO Output Resistance RO f=1kHz 10 mΩ Short Circuit Current ISC VIN=35V, TA=25oC 0.05 A Peak Output Current IPK VIN=10V, TJ=25oC 2.2 A ∆VOUT/∆T 0.4 mV/oC (∆VOUT/VOUT)/∆T 80 ppm/oC Output Voltage Temperature Coefficient Mar. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 6 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Typical Performance Characteristics 5.050 2.5 O TJ=-40 C VIN=10V 5.025 IOUT=10mA O TJ=25 C IOUT=1A 5.000 O TJ=125 C Output Voltage (V) Peak Output Current (A) 2.0 1.5 1.0 4.975 4.950 4.925 4.900 0.5 4.875 4.850 -40 0.0 3 6 9 12 15 18 21 24 -20 0 40 60 80 100 120 O Junction Temperature ( C) VIN-VOUT (V) Figure 5. Output Voltage vs. Junction Temperature Figure 4. Peak Output Current vs. Input/Output Differential Voltage 5.050 5.050 5.025 5.025 O VIN=10V, TJ=25 C 5.000 Output Voltage (V) 5.000 Output Voltage (V) 20 4.975 4.950 4.925 4.975 4.950 4.925 O IOUT=500mA, TJ=25 C 4.900 4.900 O IOUT=500mA, TJ=75 C O IOUT=1A, TJ=25 C 4.875 4.875 4.850 4.850 0 200 400 600 800 1000 1200 8 1400 10 12 14 16 18 20 22 24 Input Voltage (V) Output Current (mA) Figure 6. Output Voltage vs. Output Current Figure 7. Output Voltage vs. Input Voltage Mar. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 7 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Typical Performance Characteristics (Continued) 100 6 VIN=10V 5 80 Ripple Rejection (dB) Quiescent Current (mA) IOUT=0 4 3 2 60 40 20 1 0 -40 -20 0 20 40 60 80 100 0 10 120 100 1k 10k Junction Temperature ( C) 1M Figure 9. Ripple Rejection vs. Frequency Figure 8. Quiescent Current vs. Junction Temperature 30 2.5 Package: TO-220-3 2 Heatsink: 60*43mm 25 Power Dissipation (W) 2.0 Dropout Voltage (V) 100k Frequency (Hz) O 1.5 1.0 IOUT=100mA IOUT=500mA 0.5 20 15 10 5 IOUT=1A 0.0 -40 -20 0 20 40 60 80 100 0 -40 120 -20 0 20 40 60 80 100 120 O Junction Temperature ( C) O Junction Temperature ( C) Figure 11. Power Dissipation vs. Junction Temperature Figure 10. Dropout Voltage vs. Junction Temperature Mar. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 8 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Typical Performance Characteristics (Continued) 2 IOUT (1A/Div) AS7805A 20 15 10 ∆VOUT (100mV/Div) ∆VOUT (50mV/Div) VIN (5V/Div) 25 0 -50 -100 AS7805A 1 0 0.005A -1 100 0 -100 -200 -150 Time (100µs/Div) Time (40µs/Div) Figure 12. Line Transient (Conditions: IOUT=500mA, COUT=0.1µF) Figure 13. Load Transient (Conditions: VIN=10V, CIN=0.33µF, COUT=0.1µF) Mar. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 9 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Typical Application AS7805A VIN INPUT VOUT OUTPUT GND 0.33µF 0.1µF Figure 14. Typical Application of AS7805A Mar. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 10 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Mechanical Dimensions TO-220-3 2.580(0.102) 3.380(0.133) 0.550(0.022) 1.350(0.053) 1.160(0.046) 1.760(0.069) 14.230(0.560) 16.510(0.650) φ1.500(0.059) 27.880(1.098) 30.280(1.192) 8.520(0.335) 9.520(0.375) 1.850(0.073) 9.660(0.380) 10.660(0.420) φ3.560(0.140) 4.060(0.160) Unit: mm(inch) 3° 0.200(0.008) 7° 3.560(0.140) 4.820(0.190) 2.080(0.082) 2.880(0.113) 7° 0.381(0.015) 60° 0.813(0.032) 8.763(0.345) 60° 0.381(0.015) 2.540(0.100) 2.540(0.100) Mar. 2007 Rev. 1. 1 0.356(0.014) 0.406(0.016) BCD Semiconductor Manufacturing Limited 11 Preliminary Datasheet 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR AS7805A Mechanical Dimensions (Continued) 1.350(0.053) 1.650(0.065) TO-252-2(1) 6.350(0.250) 6.650(0.262) 5.200(0.205) 5.400(0.213) Unit: mm(inch) 2.200(0.087) 2.400(0.094) 0.430(0.017) 0.580(0.023) 4.300(0.169) 5.400(0.212) 5° 0.700(0.028) 0.900(0.035) 0.500(0.020) 0.700(0.028) 2.300TYP 4.500(0.177) 4.700(0.165) 1.400(0.055) 1.780(0.070) 5° 3° 4° 0.430(0.017) 0.580(0.023) Mar. 2007 Rev. 1. 1 4.800(0.189) 6.500(0.256) 3.800REF(0.150REF) 5.400(0.213) 5.700(0.224) 0.000(0.000) 0.127(0.005) 2.550(0.100) 2.900(0.114) 0.600(0.024) 0.900(0.035) 9.500(0.374) 9.900(0.390) 8° BCD Semiconductor Manufacturing Limited 12 http://www.bcdsemi.com IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. 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