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LTM4676A Datenblatt(PDF) 4 Page - Linear Technology |
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LTM4676A Datenblatt(HTML) 4 Page - Linear Technology |
4 / 136 page LTM4676A 4 4676afa For more information www.linear.com/LTM4676A elecTrical characTerisTics The l denotes the specifications which apply over the specified internal operating temperature range (Note 2). Specified as each individual output channel (Note 4). TA = 25°C, VIN = 12V, RUNn = 5V, FREQUENCY_SWITCH = 500kHz and VOUTn commanded to 1.000V unless otherwise noted. Configured with factory-default EEPROM settings and per Test Circuit 1, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Input DC Voltage Test Circuit 1 Test Circuit 2; VIN_OFF < VIN_ON = 4.25V l l 5.75 4.5 26.5 5.75 V V VOUTn Range of Output Voltage Regulation VOUT0 Differentially Sensed on VOSNS0+/VOSNS0– Pin-Pair; VOUT1 Differentially Sensed on VOSNS1/SGND Pin-Pair; Commanded by Serial Bus or with Resistors Present at Start-Up on VOUTnCFG and/or VTRIMnCFG l l 0.5 0.5 5.5 5.5 V V VOUTn(DC) Output Voltage, Total Variation with Line and Load (Note 5) VOUTn Low Range (MFR_PWM_MODEn[1] = 1b), FREQUENCY_SWITCH = 250kHz Digital Servo Engaged (MFR_PWM_MODEn[6] = 1b) Digital Servo Disengaged (MFR_PWM_MODEn[6] = 0b) l 0.995 0.985 1.000 1.000 1.005 1.015 V V Input Specifications IINRUSH(VIN) Input Inrush Current at Start-Up Test Circuit 1, VOUTn = 1V, VIN = 12V; No Load Besides Capacitors; TON_RISEn = 3ms 400 mA IQ(SVIN) Input Supply Bias Current Forced Continuous Mode, MFR_PWM_MODEn[0] = 1b RUNn = 5V, RUN1-n = 0V Shutdown, RUN0 = RUN1 = 0V 40 20 mA mA IS(VINn,PSM) Input Supply Current in Pulse-Skipping Mode Operation Pulse-Skipping Mode, MFR_PWM_MODEn[0] = 0b, IOUTn = 100mA 20 mA IS(VINn,FCM) Input Supply Current in Forced-Continuous Mode Operation Forced Continuous Mode, MFR_PWM_MODEn[0] = 1b IOUTn = 100mA IOUTn = 13A 40 1.37 mA A IS(VINn,SHUTDOWN) Input Supply Current in Shutdown Shutdown, RUNn = 0V 50 µA Output Specifications IOUTn Output Continuous Current Range (Note 6) 0 13 A ∆VOUTn(LINE) VOUTn Line Regulation Accuracy Digital Servo Engaged (MFR_PWM_MODEn[6] = 1b) Digital Servo Disengaged (MFR_PWM_MODEn[6] = 0b) SVIN and VINn Electrically Shorted Together and INTVCC Open Circuit; IOUTn = 0A, 5.75V ≤ VIN ≤ 26.5V, VOUT Low Range (MFR_PWM_MODEn[1] = 1b) FREQUENCY_SWITCH = 250kHz (Referenced to 12VIN) (Note 5) l 0.03 0.03 ±0.2 % %/V ∆VOUTn(LOAD) VOUTn Load Regulation Accuracy Digital Servo Engaged (MFR_PWM_MODEn[6] = 1b) Digital Servo Disengaged (MFR_PWM_MODEn[6] = 0b) 0A ≤ IOUTn ≤ 13A, VOUT Low Range, (MFR_PWM_MODEn[1] = 1b) FREQUENCY_SWITCH = 250kHz (Note 5) l 0.03 0.2 0.5 % % VOUTn(AC) Output Voltage Ripple 10 mVP-P fS (Each Channel) VOUTn Ripple Frequency FREQUENCY_SWITCH Set to 500kHz (0xFBE8) l 462.5 500 537.5 kHz ∆VOUTn(START) Turn-On Overshoot TON_RISEn = 3ms (Note 12) 8 mV tSTART Turn-On Start-Up Time Time from VIN Toggling from 0V to 12V to Rising Edge of GPIOn. TON_DELAYn = 0ms, TON_RISEn = 3ms, MFR_GPIO_PROPAGATEn = 0x0100, MFR_GPIO_RESPONSEn = 0x0000 l 35 40 ms |
Ähnliche Teilenummer - LTM4676A |
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Ähnliche Beschreibung - LTM4676A |
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