Datasheet LTC3623 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 15V, ±5A Rail-to-Rail Synchronous Buck Regulator |
| 页数 / 页 | 30 / 3 — elecTrical characTerisTics. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 1.5 Mb |
| 文件语言 | 英语 |
elecTrical characTerisTics. The. denotes the specifications which apply over the specified operating
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LTC3623
elecTrical characTerisTics The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 4) VIN = 12V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SVIN Signal VIN Supply Range 4 15 V PVIN Power VIN Supply Range 1.5 15 V VOUT VOUT Range (Note 6) VIN = 15V 0 14.5 V IISET Reference Current 25°C 49.5 50 50.5 µA 25°C to 130°C l 49 50 50.5 µA –45°C to 25°C l 49.5 50 51.5 µA ISET ISET Dropout Voltage VIN – ISET 360 mV ISET Line Regulation VIN = 5V to 15V l –10 10 nA/V ISET Load Regulation (Note 6) ILOAD = 0 to 5A 0.5 % VOUT Load Regulation ITH = 0.9V to 1.6V 0.05 % EA’s Input Offset ISET = 3V –4.5 4.5 mV gm (EA) Error Amplifier Transconductance ITH = 1.2V 0.21 0.28 0.35 mS IQ Input DC Supply Current (Note 2) Shutdown RUN = 0 0 5 µA Discontinuous Mode = 0, RT = 33.2k 1.45 1.75 mA ton(min) Minimum On Time (Note 6) 30 ns toff(min) Minimum Off Time (Note 6) 100 ns ILIM Current Limit l 5.2 6.2 7.4 A Negative Current Limit –5 –6.5 –9 RTOP Top Switch ON Resistance 60 mΩ RBOTTOM Bottom Switch On Resistance 30 mΩ VINTVCC Internal VCC Voltage 5.5V < VIN < 15V 5 V VUVLO INTVCC Undervoltage Lockout Threshold INTVCC Rising 3.6 3.8 4 V UVLO Hysteresis 0.36 V VRUN Run Threshold RUN Rising l 1.2 1.45 1.67 V Run Hysteresis 0.34 V Run Leakage RUN = 15V 0 1 µA INTVCC Load Regulation ILOAD = 0 to 20mA 0.5 % OV Output Overvoltage PGFB Rising 0.585 0.63 0.67 V PGFB Upper Threshold PGFB OV Hysteresis 15 mV UV Output Undervoltage PGFB Falling 0.5 0.54 0.575 V PGFB Lower Threshold PGFB UV Hysteresis 15 mV RPGOOD PGOOD Pull-Down Resistance 5mA Load 100 Ω PGOOD Leakage 1 µA fOSC Frequency RT = 33.2k l 0.94 1 1.07 MHz RT = INTVCC 0.75 1 1.22 MHz MODE/SYNC Threshold MODE VIL(MAX) 0.4 V MODE VIH(MIN) 4.5 V SYNC VIH(MIN) 2.5 V SYNC VIL(MAX) 0.4 V MODE/SYNC Pin Current MODE/SYNC = 5V 10 µA VIN_REG Input Voltage Regulation Reference (Note 6) 1.45 V 3623fa For more information www.linear.com/LTC3623 3
elecTrical characTerisTics The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 4) VIN = 12V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SVIN Signal VIN Supply Range 4 15 V PVIN Power VIN Supply Range 1.5 15 V VOUT VOUT Range (Note 6) VIN = 15V 0 14.5 V IISET Reference Current 25°C 49.5 50 50.5 µA 25°C to 130°C l 49 50 50.5 µA –45°C to 25°C l 49.5 50 51.5 µA ISET ISET Dropout Voltage VIN – ISET 360 mV ISET Line Regulation VIN = 5V to 15V l –10 10 nA/V ISET Load Regulation (Note 6) ILOAD = 0 to 5A 0.5 % VOUT Load Regulation ITH = 0.9V to 1.6V 0.05 % EA’s Input Offset ISET = 3V –4.5 4.5 mV gm (EA) Error Amplifier Transconductance ITH = 1.2V 0.21 0.28 0.35 mS IQ Input DC Supply Current (Note 2) Shutdown RUN = 0 0 5 µA Discontinuous Mode = 0, RT = 33.2k 1.45 1.75 mA ton(min) Minimum On Time (Note 6) 30 ns toff(min) Minimum Off Time (Note 6) 100 ns ILIM Current Limit l 5.2 6.2 7.4 A Negative Current Limit –5 –6.5 –9 RTOP Top Switch ON Resistance 60 mΩ RBOTTOM Bottom Switch On Resistance 30 mΩ VINTVCC Internal VCC Voltage 5.5V < VIN < 15V 5 V VUVLO INTVCC Undervoltage Lockout Threshold INTVCC Rising 3.6 3.8 4 V UVLO Hysteresis 0.36 V VRUN Run Threshold RUN Rising l 1.2 1.45 1.67 V Run Hysteresis 0.34 V Run Leakage RUN = 15V 0 1 µA INTVCC Load Regulation ILOAD = 0 to 20mA 0.5 % OV Output Overvoltage PGFB Rising 0.585 0.63 0.67 V PGFB Upper Threshold PGFB OV Hysteresis 15 mV UV Output Undervoltage PGFB Falling 0.5 0.54 0.575 V PGFB Lower Threshold PGFB UV Hysteresis 15 mV RPGOOD PGOOD Pull-Down Resistance 5mA Load 100 Ω PGOOD Leakage 1 µA fOSC Frequency RT = 33.2k l 0.94 1 1.07 MHz RT = INTVCC 0.75 1 1.22 MHz MODE/SYNC Threshold MODE VIL(MAX) 0.4 V MODE VIH(MIN) 4.5 V SYNC VIH(MIN) 2.5 V SYNC VIL(MAX) 0.4 V MODE/SYNC Pin Current MODE/SYNC = 5V 10 µA VIN_REG Input Voltage Regulation Reference (Note 6) 1.45 V 3623fa For more information www.linear.com/LTC3623 3