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| Datasheet File OCR Text: |
| ST 7808R 3-terminal 1 A positive voltage regulator Features * Output Current up to 1 A * Thermal Overload Protection * Short Circuit Protection * Output Transistor Safe Operating Area Protection Absolute Maximum Ratings (Ta = 25 OC) Parameter Input Voltage Thermal Resistance Junction-Cases Thermal Resistance Junction-Air Operating Temperature Range Storage Temperature Range Symbol VI RJC RJA TOPR TS Value 35 5 65 0 to + 125 - 65 to + 150 O O Units V C/W C/W O C C O Electrical Characteristics (0 OC < TJ < 125 OC, IO = 500 mA, VI = 14 V, CI = 0.33 F, CO = 0.1 F, unless otherwise specified) Parameter Output Voltage Symbol TJ = + 25 C O Conditions 5 mA IO 1 A, PO 15 W VI = 10.5 V to 23 V VI = 10.5 V to 25 V VI = 11.5 V to 17 V IO = 5 mA to 1.5 A IO = 250 mA to 750 mA Min. 7.7 7.6 56 - Typ. 8 8 -0.8 52 2 17 230 2.2 Max. 8.3 8.4 160 80 160 80 8 0.5 1 - Unit V VO Line Regulation 1) Regline TJ = + 25 OC Regload TJ = + 25 OC IQ IQ VO/T VN RR VDrop RO ISC IPK TJ = + 25 OC mV mV mA mA mV/OC V dB V m mA A Load Regulation 1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current 1) IO = 5 mA to 1 A VI = 10.5 V to 25 V IO = 5 mA f = 10 Hz to 100 KHz, TA = + 25 OC f = 120 Hz, VI = 11.5 V to 21.5 V IO = 1 A, TJ = + 25 C O f = 1 KHz VI = 35 V, TA = + 25 OC TJ = + 25 C O Load and line regulation are specified at constant junction temperature, Changes in Vo due to heating effects must be taken into account separately, Pulse testing with low duty is used. SEMTECH ELECTRONICS LTD. (R) (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) Dated : 21/06/2006 ST 7808R Typical Performance Characteristics SEMTECH ELECTRONICS LTD. (R) (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) Dated : 21/06/2006 ST 7808R TO-252 PACKAGE OUTLINE SEMTECH ELECTRONICS LTD. (R) (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) Dated : 21/06/2006 |
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