Datasheet LT3074 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 5.5V, 3A Ultralow Noise, High PSRR, 45mV Dropout Linear Regulator with PMBus |
| 页数 / 页 | 62 / 3 — Data Sheet. LT3074. SPECIFICATIONS Table 1. Electrical Characteristics. … |
| 文件格式/大小 | PDF / 2.1 Mb |
| 文件语言 | 英语 |
Data Sheet. LT3074. SPECIFICATIONS Table 1. Electrical Characteristics. PARAMETER. SYMBOL. CONDITIONS/COMMENTS. MIN. TYP. MAX. UNITS
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Data Sheet LT3074 SPECIFICATIONS Table 1. Electrical Characteristics
(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.)
PARAMETER SYMBOL CONDITIONS/COMMENTS MIN TYP MAX UNITS
IN Pin Voltage VIN 5.5 V BIAS Pin Voltage
1
VBIAS 2.375 5.5 V Max [2.375, VOUT + 1.2V] ≤ VBIAS ≤ 5.5V, VOUT + 0.2V ≤ VIN ≤ 5.5V, 0.5V ≤ SETRES Pin Current
3
ISETRES V T OUT ≤ 4.2V, 50mA J = 25°C 99.5 100 100.5 µA ≤ IOUT ≤ 3A, MFR_MARGIN = 8’h00 Max [2.375, VOUT + 1.2V] ≤ VBIAS ≤ 5.5V, VOUT + 0.2V ≤ VIN ≤ 5.5V, 0.5V ≤ VOUT ≤ SETRES Pin Current ISETRES 4.2V, 50mA ≤ I 99 100 101 µA OUT ≤ 3A, MFR_MARGIN = 8’h00 VBIAS = 2.375V, VIN = 1.2V, VOUT = 1V, IOUT −1 1 = 10mA Output Offset Voltage VOS Max [2.375V, VOUT + 1.2V] ≤ VBIAS ≤ 5.5V, mV 50mA ≤ IOUT ≤ 3A, VOUT + 0.2V ≤ VIN ≤ −2 2 5.5V, 0.5V ≤ VOUT ≤ 4.2V VOUT = 0.5V, ∆VIN = 0.7V to 5.5V, VBIAS = 50 ISETRES Line Regulation to ΔISETRES = 2.375V, IOUT = 50mA nA VIN f(ΔVIN) VOUT = 4.2V, ∆VIN = 4.4V to 5.5V, VBIAS = 50 5.5V, IOUT = 10mA VOUT = 0.5V, ∆VIN = 0.7V to 5.5V, VBIAS = 0.5 VOUT Line Regulation to ΔVOUT = 2.375V, IOUT = 50mA mV VIN f(ΔVIN) VOUT = 4.2V, ∆VIN = 4.4V to 5.5V, VBIAS = 0.6 5.5V, IOUT = 10mA VOUT = 0.5V, ∆VBIAS = 2.375V to 5.5V, VIN 100 ISETRES Line Regulation to ΔISETRES = = 0.7V, IOUT = 50mA nA VBIAS f(ΔVBIAS) VOUT = 3.3V, ∆VBIAS = 4.5V to 5.5V, VIN = 100 3.5V, IOUT = 10mA VOUT Line Regulation to VOUT = 0.5V, ∆VBIAS = 2.375V to 5.5V, VIN 0.25 mV VBIAS = 0.7V, IOUT = 50mA
analog.com
Rev 0. 3 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
Data Sheet LT3074 SPECIFICATIONS Table 1. Electrical Characteristics
(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.)
PARAMETER SYMBOL CONDITIONS/COMMENTS MIN TYP MAX UNITS
IN Pin Voltage VIN 5.5 V BIAS Pin Voltage
1
VBIAS 2.375 5.5 V Max [2.375, VOUT + 1.2V] ≤ VBIAS ≤ 5.5V, VOUT + 0.2V ≤ VIN ≤ 5.5V, 0.5V ≤ SETRES Pin Current
3
ISETRES V T OUT ≤ 4.2V, 50mA J = 25°C 99.5 100 100.5 µA ≤ IOUT ≤ 3A, MFR_MARGIN = 8’h00 Max [2.375, VOUT + 1.2V] ≤ VBIAS ≤ 5.5V, VOUT + 0.2V ≤ VIN ≤ 5.5V, 0.5V ≤ VOUT ≤ SETRES Pin Current ISETRES 4.2V, 50mA ≤ I 99 100 101 µA OUT ≤ 3A, MFR_MARGIN = 8’h00 VBIAS = 2.375V, VIN = 1.2V, VOUT = 1V, IOUT −1 1 = 10mA Output Offset Voltage VOS Max [2.375V, VOUT + 1.2V] ≤ VBIAS ≤ 5.5V, mV 50mA ≤ IOUT ≤ 3A, VOUT + 0.2V ≤ VIN ≤ −2 2 5.5V, 0.5V ≤ VOUT ≤ 4.2V VOUT = 0.5V, ∆VIN = 0.7V to 5.5V, VBIAS = 50 ISETRES Line Regulation to ΔISETRES = 2.375V, IOUT = 50mA nA VIN f(ΔVIN) VOUT = 4.2V, ∆VIN = 4.4V to 5.5V, VBIAS = 50 5.5V, IOUT = 10mA VOUT = 0.5V, ∆VIN = 0.7V to 5.5V, VBIAS = 0.5 VOUT Line Regulation to ΔVOUT = 2.375V, IOUT = 50mA mV VIN f(ΔVIN) VOUT = 4.2V, ∆VIN = 4.4V to 5.5V, VBIAS = 0.6 5.5V, IOUT = 10mA VOUT = 0.5V, ∆VBIAS = 2.375V to 5.5V, VIN 100 ISETRES Line Regulation to ΔISETRES = = 0.7V, IOUT = 50mA nA VBIAS f(ΔVBIAS) VOUT = 3.3V, ∆VBIAS = 4.5V to 5.5V, VIN = 100 3.5V, IOUT = 10mA VOUT Line Regulation to VOUT = 0.5V, ∆VBIAS = 2.375V to 5.5V, VIN 0.25 mV VBIAS = 0.7V, IOUT = 50mA
analog.com
Rev 0. 3 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