Datasheet LTC3703 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 100V Synchronous Switching Regulator Controller |
| Pages / Page | 34 / 3 — e lecTrical characTerisTics The. denotes the specifications which apply … |
| File Format / Size | PDF / 459 Kb |
| Document Language | English |
e lecTrical characTerisTics The. denotes the specifications which apply over the full operating
Model Line for this Datasheet
Text Version of Document
LTC3703
e lecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = DRVCC = VBOOST = VIN = 10V, VMODE/SYNC = VINV = VSW = BGRTN = 0V, RUN/SS = IMAX = open, RSET = 25k, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC, DRVCC VCC, DRVCC Supply Voltage l 9.3 15 V VIN VIN Pin Voltage l 100 V ICC VCC Supply Current VFB = 0V l 1.7 2.5 mA RUN/SS = 0V 50 µA IDRVCC DRVCC Supply Current (Note 5) 0 5 µA RUN/SS = 0V 0 5 µA IBOOST BOOST Supply Current (Note 5) TJ ≤ 125°C l 360 500 µA TJ > 125°C l 360 800 µA RUN/SS = 0V 0 5 µA
Main Control Loop
VFB Feedback Voltage (Note 4) 0.792 0.800 0.808 V l 0.788 0.812 V ∆VFB(LINE) Feedback Voltage Line Regulation 9V < VCC < 15V (Note 4) l 0.007 0.05 %/V ∆VFB(LOAD) Feedback Voltage Load Regulation 1V < VCOMP < 2V (Note 4) l 0.01 0.1 % VMODE/SYNC MODE/SYNC Threshold MODE/SYNC Rising 0.75 0.81 0.87 V ∆VMODE/SYNC MODE/SYNC Hysteresis 20 mV IMODE/SYNC MODE/SYNC Current 0 ≤ VMODE/SYNC ≤ 15V 0 1 µA VINV Invert Threshold 1 1.5 2 V IINV Invert Current 0 ≤ VINV ≤ 15V 0 1 µA IVIN VIN Sense Input Current VIN = 100V 100 140 µA RUN/SS = 0V, VIN = 10V 0 1 µA IMAX IMAX Source Current VIMAX = 0V 10.5 12 13.5 µA VOS(IMAX) VIMAX Offset Voltage |VSW| – VIMAX at IRUN/SS = 0µA –25 10 55 mV H Grade –25 10 65 mV VRUN/SS Shutdown Threshold 0.7 0.9 1.2 V IRUN/SS RUN/SS Source Current RUN/SS = 0V 2.5 4 5.5 µA Maximum RUN/SS Sink Current |VSW| – VIMAX ≥ 200mV, VRUN/SS = 3V 9 17 25 µA VUV Undervoltage Lockout VCC Rising l 8.0 8.7 9.3 V VCC Falling l 5.7 6.2 6.8 V
Oscillator
fOSC Oscillator Frequency RSET = 25k 270 300 330 kHz fSYNC External Sync Frequency Range 100 600 kHz tON(MIN) Minimum On-Time 200 ns DCMAX Maximum Duty Cycle f < 200kHz 89 93 96 %
Driver
IBG(PEAK) BG Driver Peak Source Current 1.5 2 A RBG(SINK) BG Driver Pull-Down RDS(ON) (Note 8) 1 1.5 Ω ITG(PEAK) TG Driver Peak Source Current 1.5 2 A RTG(SINK) TG Driver Pull-Down RDS(ON) (Note 8) 1 1.5 Ω
Feedback Amplifier
AVOL Op Amp DC Open Loop Gain (Note 4) 74 85 dB fU Op Amp Unity Gain Crossover Frequency (Note 6) 25 MHz IFB FB Input Current 0 ≤ VFB ≤ 3V 0 1 µA ICOMP COMP Sink/Source Current ±5 ±10 mA 3703fc 3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
e lecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = DRVCC = VBOOST = VIN = 10V, VMODE/SYNC = VINV = VSW = BGRTN = 0V, RUN/SS = IMAX = open, RSET = 25k, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC, DRVCC VCC, DRVCC Supply Voltage l 9.3 15 V VIN VIN Pin Voltage l 100 V ICC VCC Supply Current VFB = 0V l 1.7 2.5 mA RUN/SS = 0V 50 µA IDRVCC DRVCC Supply Current (Note 5) 0 5 µA RUN/SS = 0V 0 5 µA IBOOST BOOST Supply Current (Note 5) TJ ≤ 125°C l 360 500 µA TJ > 125°C l 360 800 µA RUN/SS = 0V 0 5 µA
Main Control Loop
VFB Feedback Voltage (Note 4) 0.792 0.800 0.808 V l 0.788 0.812 V ∆VFB(LINE) Feedback Voltage Line Regulation 9V < VCC < 15V (Note 4) l 0.007 0.05 %/V ∆VFB(LOAD) Feedback Voltage Load Regulation 1V < VCOMP < 2V (Note 4) l 0.01 0.1 % VMODE/SYNC MODE/SYNC Threshold MODE/SYNC Rising 0.75 0.81 0.87 V ∆VMODE/SYNC MODE/SYNC Hysteresis 20 mV IMODE/SYNC MODE/SYNC Current 0 ≤ VMODE/SYNC ≤ 15V 0 1 µA VINV Invert Threshold 1 1.5 2 V IINV Invert Current 0 ≤ VINV ≤ 15V 0 1 µA IVIN VIN Sense Input Current VIN = 100V 100 140 µA RUN/SS = 0V, VIN = 10V 0 1 µA IMAX IMAX Source Current VIMAX = 0V 10.5 12 13.5 µA VOS(IMAX) VIMAX Offset Voltage |VSW| – VIMAX at IRUN/SS = 0µA –25 10 55 mV H Grade –25 10 65 mV VRUN/SS Shutdown Threshold 0.7 0.9 1.2 V IRUN/SS RUN/SS Source Current RUN/SS = 0V 2.5 4 5.5 µA Maximum RUN/SS Sink Current |VSW| – VIMAX ≥ 200mV, VRUN/SS = 3V 9 17 25 µA VUV Undervoltage Lockout VCC Rising l 8.0 8.7 9.3 V VCC Falling l 5.7 6.2 6.8 V
Oscillator
fOSC Oscillator Frequency RSET = 25k 270 300 330 kHz fSYNC External Sync Frequency Range 100 600 kHz tON(MIN) Minimum On-Time 200 ns DCMAX Maximum Duty Cycle f < 200kHz 89 93 96 %
Driver
IBG(PEAK) BG Driver Peak Source Current 1.5 2 A RBG(SINK) BG Driver Pull-Down RDS(ON) (Note 8) 1 1.5 Ω ITG(PEAK) TG Driver Peak Source Current 1.5 2 A RTG(SINK) TG Driver Pull-Down RDS(ON) (Note 8) 1 1.5 Ω
Feedback Amplifier
AVOL Op Amp DC Open Loop Gain (Note 4) 74 85 dB fU Op Amp Unity Gain Crossover Frequency (Note 6) 25 MHz IFB FB Input Current 0 ≤ VFB ≤ 3V 0 1 µA ICOMP COMP Sink/Source Current ±5 ±10 mA 3703fc 3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
