ST7812 SEMTECH_ELEC | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 3

Technical content

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 Symbol Value Units Input Voltage V I 35 V Thermal Resistance Junction-Cases R θJC 5 OC/W Thermal Resistance Junction-Air R θJA 65 OC/W Operating Temperature Range T OPR 0 to + 125 OC Storage Temperature Range T S - 65 to + 150 OC

Electrical Characteristics

(0 OC < TJ < 125 OC, IO = 500 mA, VI = 19 V, CI = 0.33 µF, CO = 0.1 µF, unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit TJ = + 25 OC 11.5 12 12.5 Output Voltage VO 5 mA ≤ IO ≤ 1 A, PO ≤ 15 W VI = 14.5 V to 27 V 11.4 12 12.6 V VI = 14.5 V to 30 V - - 240Line Regulation 1) Regline T J = + 25 OC VI = 16 V to 22 V - - 120 mV IO = 5 mA to 1.5 A - - 240Load Regulation 1) Regload T J = + 25 OC IO = 250 mA to 750 mA - - 120 mV Quiescent Current I Q T J = + 25 OC - - 8 mA IO = 5 mA to 1 A - - 0.5 Quiescent Current Change ΔIQ VI = 14.5 V to 30 V - - 1 mA Output Voltage Drift ΔVO/ΔT I O = 5 mA - -1 - mV/ OC Output Noise Voltage V N f = 10 Hz to 100 KHz, T A = + 25 OC - 76 - µV Ripple Rejection RR f = 120 Hz, V I = 15 V to 25 V 55 - - dB Dropout Voltage V Drop I O = 1 A, TJ = + 25 OC - 2 - V Output Resistance R O f = 1 KHz - 18 - m Ω Short Circuit Current I SC V I = 35 V, TA = + 25 OC - 230 - mA Peak Current I PK T J = + 25 OC - 2.2 - A 1) 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. TO-220 Plastic Package

Dated : 21/06/2006 SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ST 7812 Typical Performance Characteristics

Dated : 21/06/2006 SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ST 7812 TO-220 PACKAGE OUTLINE