Datenblatt-Suchmaschine für elektronische Bauteile |
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LTM4676A Datenblatt(PDF) 80 Page - Linear Technology |
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LTM4676A Datenblatt(HTML) 80 Page - Linear Technology |
80 / 136 page LTM4676A 80 4676afa For more information www.linear.com/LTM4676A Typical applicaTions CINH 22µF ×3 CINL 220µF 10k ×7 VIN 5.75V to 26.5V PWM CLOCK SYNCH. TIME BASE SYNCH. • SLAVE ADDRESS = 1000101_R/W (0X45) • 750kHz SWITCHING FREQUENCY • NO GUI CONFIGURATION AND NO PART-SPECIFIC PROGRAMMING REQUIRED IN MULTI-MODULE SYSTEMS, CONFIGURING RAIL_ADDRESS IS RECOMMENDED. • SETTING MFR_PWM_CONFIG[7]=1b CONFIGURES THE VOUT1 CONTROL LOOP TO USE THE VOSNS0+/VOSNS0– DIFFERENTIAL-SENSE PIN-PAIR AS THE FEEDBACK SIGNAL FOR REGULATING VOUT1. COUT 100µF ×10 VOUT, 5V ADJUSTABLE UP TO 26A OPTIONAL: INSTALLING U2 AWAY FROM HEAT SOURCES ALLOWS INTVCC LDO LOSSES NORMALLY INCURRED BY THE LTM4676A TO BE DISSIPATED INSTEAD BY THE LT3060. THERMAL-DERATING CAN THUS BE IMPROVED VIN0 VIN1 SVIN VDD33 LOAD SCL SDA ALERT RUN0 RUN1 GPIO0 GPIO1 SYNC SHARE_CLK WP 4.22k 1% ±50ppm/°C 10.7k 1% ±50ppm/°C U1 LTM4676A 4676A F42 + 16.2k 1% ±50ppm/°C 3.83k 1% ±50ppm/°C SMBus INTERFACE WITH PMBus COMMAND SET ON/OFF CONTROL, FAULT MANAGEMENT, POWER SEQUENCING IN RSET1 13.3k RSET2 1.62k OUT SHDN ADJ U2 LT3060 GND REF/BYP VOUT0 TSNS0a TSNS0b ISNS0a+ ISNS0b+ ISNS0a– ISNS0b– VORB0+ VOSNS0+ VOSNS0– VORB0– VORB1 VOUT1 TSNS1a TSNS1b ISNS1a+ ISNS1b+ ISNS1a– ISNS1b– VOSNS1 SGND Figure 42. 26A, 5V Output DC/DC µModule Regulator with Serial Interface Figure 43. Output Derating Curve of Figure 42 Circuit Tested on DC1811B-B, 12VIN, No Heat Sink AMBIENT TEMPERATURE (°C) 30 40 0 2 6 8 10 20 22 24 26 14 50 70 4676A F43 4 16 18 12 90 120 110 60 80 100 400LFM, WITH U2, RSET1 AND RSET2 INSTALLED: θJA = 6.2°C/W 200LFM, WITH U2, RSET1 AND RSET2 INSTALLED: θJA = 7.9°C/W 400LFM, WITH U2, RSET1 AND RSET2 NOT USED: θJA = 7.3°C/W 200LFM, WITH U2, RSET1 AND RSET2 NOT USED: θJA = 8.9°C/W |
Ähnliche Teilenummer - LTM4676A |
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Ähnliche Beschreibung - LTM4676A |
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