link to page 9 link to page 9 link to page 9 Data SheetLT3074 (All typical specifications are at TJ (junction temperature). = 25°C and all min. and max. specifications are across the entire operating temperature range, unless otherwise noted. COUT = 22µF, CSETCAP = 4.7µF, CBIASAF = 2.2µF, and CBIASDF = 0.47µF, unless otherwise noted.) PARAMETERSYMBOLCONDITIONS/COMMENTSMINTYPMAXUNITS VIOCVOS VIOC Amplifier Offset 790 800 810 mV Input-to-Output VIOC Pin Source Current: V VIOC BIAS > VIOC 200 Differential Voltage ISOURCE + 1V Control µA 5 VIOC Pin Sink Current: V VIOC BIAS > VIOC + ISINK 20 1V ENVTHR EN Trip Point Rising, VBIAS = 2.375V 1.20 1.26 1.32 V EN Pin Threshold EN Trip Point Hysteresis, V EN BIAS = VTHF 80 mV 2.375V 0V ≤ V EN Pin Current I EN ≤ 5.5V, VBIAS = 5.5V 5 EN µA VEN = 5.5V, VBIAS = 0V 10 20 ASEL Pin Leakage I Current ASEL 0V ≤ VASEL ≤ 5.5V, VBIAS = 0V 1 µA VRIPPLE = 500mVP-P, VBIAS = 5V (Avg.), fRIPPLE = 120Hz, 114 V I BIAS Ripple Rejection PSRR IN = 1.3V, OUT = 3A BIAS dB VSETRES = VOUT = VRIPPLE = 500mVP-P, 1.0V fRIPPLE = 1MHz, IOUT 67 = 3A VRIPPLE = 50mVP-P, VBIAS = 5V, VIN = fRIPPLE = 120Hz, 90 1.3V (Avg.), I IN Ripple Rejection PSRR OUT = 3A IN dB VSETRES = VOUT = VRIPPLE = 50mVP-P, 1.0V fRIPPLE = 1MHz, IOUT 52 = 3A BW = 10Hz to VOUT = 1V, IOUT = 100kHz, CSETCAP = 1.6 3A, V 0.47µF Output RMS Noise 6 V IN = 1.3V, RMS(OUT) µV V RMS BIAS = 3.3V, COUT = BW = 10Hz to 22µF 100kHz, CSETCAP = 1.2 4.7µF Frequency = 2.4 µV/√Hz 0.1Hz VOUT = 1V, IOUT = Frequency = 10Hz 650 Output Noise Spectral 3A, V V IN = 1.3V, Frequency = Density 6 n(OUT) VBIAS = 3.3V, 3.5 10kHz nV/√Hz CSETCAP = 0.47µF Frequency = 3 100kHz analog.com Rev 0. 6 of 62 Document Outline Features Applications General Description Simplified Application Diagram Revision History Specifications Absolute Maximum Ratings Thermal Resistance Electrostatic Discharge (ESD) ESD Ratings ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Functional Diagrams Applications Information Output Voltage Output Sensing Stability and Output Capacitance High Vibration Environments Stability and Input Capacitance PSRR and Input Capacitance Filtering High Frequency Spikes Output Noise SETCAP Pin Capacitance: Noise, PSRR, Transient Response, and Soft-Start Fast Start Output Voltage Margining BIAS/BIASAF/BIASDF Pin Requirements BIAS Undervoltage Lockout EN/UV Function (Turning the Part ON and OFF) Power Good Indicator Programmable Power Good Current Monitor and Programmable Current Limit Output Overshoot Recovery and Active Discharge Direct Paralleling for Higher Output Current PCB Layout Considerations High Efficiency Linear Regulator – Input-to-Output Voltage Control Thermal Considerations Calculating Junction Temperature Protection Features Serial Bus Addressing Telemetry Readback Fault Reporting and the ALERT pin Bus Timeout TTIMEOUT TLOW:SEXT TLOW:MEXT PMBus Command Details PAGE OPERATION ON_OFF_CONFIG CLEAR_FAULTS WRITE_PROTECT CAPABILITY VOUT_MODE VOUT_OV_WARN_LIMIT VOUT_UV_WARN_LIMIT IOUT_OC_FAULT_LIMIT IOUT_OC_FAULT_RESPONSE OT_WARN_LIMIT VIN_OV_WARN_LIMIT VIN_UV_WARN_LIMIT STATUS_BYTE STATUS_WORD STATUS_VOUT STATUS_IOUT STATUS_INPUT STATUS_TEMPERATURE STATUS_CML STATUS_MFR_SPECIFIC READ_VIN READ_VOUT READ_IOUT READ_TEMPERATURE_1 PMBUS_REVISION IC_DEVICE_ID IC_DEVICE_REV MFR_MARGIN MFR_READ_VBIAS MFR_BIAS_OV_WARN_LIMIT MFR_BIAS_UV_WARN_LIMIT MFR_IOUT_MIN_WARN_LIMIT MFR_SPECIAL_ID MFR_DEFAULT_CONFIG MFR_RAIL_ADDRESS MFR_RESET Typical Application Circuits Outline Dimensions Ordering Guide Evaluation Boards Related Parts
