L4805-L4885-L4892 STMICROELECTRONICS | Alldatasheet

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VERY LOW DROP VOLTAGE REGULATORS .INPUT/OUTPUT DROP TYP. 0.4V .400mA OUTPUT CURRENT .LOW QUIESCENT CURRENT .REVERSE POLARITY PROTECTION .OVERVOLTAGEPROTECTION ( ± 60V) .FOLDBACK CURRENT LIMITING .THERMAL SHUTDOWN TO-220

DESCRIPTION

L4800 series devices are voltage regulators with a very low voltage drop (typically 0.4V at full rated cur- rent), output current up to 400mA, low quiescent current and comprehensiveon-chip protection.The- se devices are protected against load dump and field decay transients of± 60V, polarity reversal and overheating. A foldback current limiter protects against load short circuits. Available in 5V, 8.5V, 9.2V,10V and12Vversions(all± 4%, T I=25°C)the- se regulators aredesigned forautomotive, industrial and consumer applications where low consumption is particularly important. BLOCK DIAGRAM In automotiveapplications the L4805 is ideal for 5V logic suppliesbecauseit can operateeven when the batteryvoltage falls below 6V. In batterybackup and standby applications the low consumption of these devices extends battery life. SOT-82

Symbol Parameter Value Unit VI DC Input Voltage + 35 V DC Input Reverse Voltage - 18 V Transient Input Overvoltages : Load Dump : 5ms < T rise< 10ms, τf Fall Time Constant = 100ms, R source< 0.5Ω Field Decay : 5ms < t fall< 10ms, Rsource<1 0Ω τr Rise Time Constant = 33ms -6 0 V V Tj,T stg Junction and Storage Temperature Range - 55 to + 150 °C THERMAL DATA Symbol Parameter SOT82 TO220 Unit R th j-case Thermal Resistance Junction-case Max. 8 4 °C/W R th j-amb Thermal Resistance Junction-ambient Max. 100 75 °C/W PIN CONNECTION (top view) TEST AND APPLICATION CIRCUIT Theoutput capacitoris required forstability. Though the 100µF shown is the minimum recommended value, actual size and type may vary depending upon the application load and temperature range. Capacitoreffectiveseriesresistance (ESR)alsofac- tors in the IC stability. Since ESR varies from one brandtothe next,some bench work may be required to determine the minimum capacitor value to use in production. Worst-case is usuallydetermined at the minimum ambient temperature and maximum load expected. Output capacitors can be increased in size to any desired value above the minimum. One possible purpose of this would be to maintain the output vol- tages during brief conditions of negative input tran- sients that might be characteristics of a particular system. Capacitorsmust also be rated at all ambient tempe- ratureexpected in the system. Many aluminum type electrolyticswill freeze at temperatures less than – 30 °C, reducing their effective capacitance to zero. To maintain regulator stability down to – 40°C, ca- pacitors rated at that temperature (such as tan- talums) must be used. Order Codes Output Voltage TO-220 SOT-82 L4805CV L4808CV L4885CV L4892CV L4810CV L4812CV L4805CX L4808CX L4885CX L4892CX L4810CX L4812CX 8.5 V 9.2 V 10 V 12 V L4805-L4808-L4885-L4892-L4810-L4812

Notes : 1. This limits are guaranteed by design, correlation and statistical control on production samples over the indicated temperature and supply voltage ranges.. 2. For a DC voltage 26V < Vi < 35V the device is not operating. ELECTRICAL CHARACTERISTICS (VI = 14.4V; CO = 100µF; Tj=2 5°C unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit VO Output Voltage I O = 5mA to 400mA (L4805) 4.80 5.00 5.20 V IO = 5mA to 400mA (L4808) 7.68 8.00 8.32 V IO = 5mA to 400mA (L4810) 8.16 8.50 8.84 V IO = 5mA to 400mA (L4812) 8.83 9.20 9.57 V IO = 5mA to 400mA (L4885) 9.60 10.00 10.40 V IO = 300mA (L4892) 11.50 12.00 12.50 V VI Operating Input Voltage 26 V ΔVO /VO Line Regulation VI = 13 to 26V; I O = 5mA 1 10 mV/V Δ VO /VO Load Regulation IO = 5 to 400mA* 3 15 mV/V VI -V O Dropout Voltage I O = 400mA* 0.4 0.7 V IO = 150mA 0.2 0.4 V Iq Quiescent Current I O = 0mA 0.8 2 mA IO = 150mA 25 45 mA IO = 400mA* 65 90 mA Δ VO Δ T•VO Temperature Output Voltage Drift 0.1 mV °C •V SVR Supply Voltage Rejection I O = 350mA; f = 320Hz; CO =1 0 0µF; VI =V O +3V+2V pp 60 dB IO Max Output Current 800 mA ISC Output Short Circuit Current (fold back condition) 350 500 mA * only for L4892 the current test conditions is IO = 300mA ELECTRICAL CHARACTERISTICS (VI = 14.4V; CO = 100µF; Tj = -40 to 125°C (note 1) unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit VO Output Voltage I O = 5mA to 400mA (L4805) 4.70 5.00 5.30 V IO = 5mA to 400mA (L4808) 7.50 8.00 8.50 V IO = 5mA to 400mA (L4810) 8.00 8.50 9.00 V IO = 5mA to 400mA (L4812) 8.65 9.20 9.75 V IO = 5mA to 400mA (L4885) 9.40 10.00 10.60 V IO = 300mA (L4892) 11.30 12.00 12.70 V VI Operating Input Voltage see note 2 26 V ΔVO /VO Line Regulation VI = 14 to 26V; I O = 5mA 2 15 mV/V Δ VO /VO Load Regulation IO = 5 to 400mA* 5 25 mV/V VI -V O Dropout Voltage I O = 400mA* 0.5 0.9 V IO = 150mA 0.25 0.5 V Iq Quiescent Current I O = 0mA 1.2 3 mA IO = 150mA 40 70 mA IO = 400mA* 80 140 mA IO Max Output Current 870 mA ISC Output Short Circuit Current (fold back condition) 230 mA L4805-L4808-L4885-L4892-L4810-L4812

SOT82 PACKAGE MECHANICAL DATA DIM. mm inch A 7.4 7.8 0.291 0.307 B 10.5 10.8 0.413 0.425 b 0.7 0.9 0.028 0.035 b1 0.49 0.75 0.019 0.030 C 2.4 2.7 0.094 0.106 c1 1.2 0.047 D 15.7 0.618 e 2.2 0.087 e3 4.4 0.173 F 3.8 0.150 H 2.54 0.100 L4805-L4808-L4885-L4892-L4810-L4812

TO220 PACKAGE MECHANICAL DATA DIM. mm inch A 4.8 0.189 C 1.37 0.054 D 2.4 2.8 0.094 0.110 D1 1.2 1.35 0.047 0.053 E 0.35 0.55 0.014 0.022 F 0.8 1.05 0.031 0.041 F2 1.15 1.4 0.045 0.055 H2 10.4 0.409 H3 10.05 10.4 0.396 0.409 L2 16.2 0.638 L5 2.6 3 0.102 0.118 L6 15.1 15.8 0.594 0.622 L7 6 6.6 0.236 0.260 Dia 3.65 3.85 0.144 0.152 L4805-L4808-L4885-L4892-L4810-L4812

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifica- tions mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information pre- viously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics .  1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. L4805-L4808-L4885-L4892-L4810-L4812