Datasheet LTC3713 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | Low Input Voltage, High Power, No RSENSE Synchronous Buck DC/DC Controller |
| Seiten / Seite | 24 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL … |
| Dateiformat / Größe | PDF / 291 Kb |
| Dokumentensprache | Englisch |
ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL CHARACTERISTICS The
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LTC3713
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Supply Voltage (VIN2) ...10V to – 0.3V TOP VIEW ORDER PART Boosted Topside Driver Supply Voltage NUMBER RUN/SS 1 24 BOOST (BOOST) ... 42V to – 0.3V V 2 23 ON TG LTC3713EG VIN1, ION, SW1, SENSE+ Voltages ... 36V to – 0.3V PGOOD 3 22 SW1 RUN/SS, PGOOD Voltages ... 7V to – 0.3V V 4 21 RNG SENSE+ FCB, VON, VRNG Voltages .. INTVCC + 0.3V to – 0.3V FCB 5 20 SENSE– ITH, VFB1, SENSE– Voltages ... 2.7V to – 0.3V I 6 19 TH PGND1 SW2 Voltage ... 36V to – 0.4V SGND1 7 18 BG V I 8 17 INTV FB2 Voltage ... VIN2 + 0.3V ON CC SHDN Voltage ... 10V V 9 16 FB1 VIN1 TG, BG, INTV SHDN 10 15 VIN2 CC Peak Currents .. 2A TG, BG, INTV SGND2 11 14 PGND2 CC RMS Currents .. 50mA V 12 13 SW2 Operating Ambient Temperature FB2 Range (Note 4) ... – 40°C to 85°C G PACKAGE 24-LEAD PLASTIC SSOP Junction Temperature (Note 2) .. 125°C TJMAX = 125°C, θJA = 130°C/ W Storage Temperature Range ... – 65°C to 150°C Lead Temperature (Soldering, 10 sec).. 300°C Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. VIN1 = 15V, VIN2 = 1.5V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Buck Regulator
IQ(VIN1) Input DC Supply Current (VIN1) Normal 900 2000 µA Shutdown Supply Current 15 30 µA VFB1 Feedback Reference Voltage ITH = 1.2V (Note 3) ● 0.792 0.800 0.808 V IFB1 Feedback Current (Note 3) –5 ±50 nA ∆VFB1(LINEREG) Feedback Voltage Line Regulation VIN1 = 4V to 30V, ITH = 1.2V (Note 3) 0.002 %/V ∆VFB1(LOADREG) Feedback Voltage Load Regulation ITH = 0.5V to 1.9V (Note 3) ● – 0.05 – 0.3 % gm(EA) Error Amplifier Transconductance ITH = 1.2V (Note 3) ● 1.4 1.7 2 mS VFCB Forced Continuous Threshold ● 0.76 0.8 0.84 V IFCB Forced Continuous Pin Current VFCB = 0.8V – 1 – 2 µA tON On-Time ION = 60µA, VON = 1.5V 200 250 300 ns ION = 30µA, VON = 1.5V 400 500 600 ns tON(MIN) Minimum On-Time ION = 180µA 50 100 ns tOFF(MIN) Minimum Off-Time 250 400 ns VSENSE(MAX) Maximum Current Sense Threshold VRNG = 1V, VFB1 = 0.76V ● 113 133 153 mV VPGND – VSW VRNG = 0V, VFB1 = 0.76V ● 79 93 107 mV VRNG = INTVCC, VFB1 = 0.76V ● 158 186 214 mV VSENSE(MIN) Minimum Current Sense Threshold VRNG = 1V, VFB1 = 0.84V – 67 mV VPGND – VSW VRNG = 0V, VFB1 = 0.84V – 47 mV VRNG = INTVCC, VFB1 = 0.84V – 93 mV ∆VFB1(OV) Output Overvoltage Fault Threshold 5.5 7.5 9.5 % ∆VFB1(UV) Output Undervoltage Fault Threshold 520 600 680 mV VRUN/SS(ON) RUN Pin Start Threshold ● 0.8 1.5 2 V VRUN/SS(LE) RUN Pin Latchoff Enable Threshold RUN/SS Pin Rising 4 4.5 V VRUN/SS(LT) RUN Pin Latchoff Threshold RUN/SS Pin Falling 3.5 4.2 V 3713fa 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Supply Voltage (VIN2) ...10V to – 0.3V TOP VIEW ORDER PART Boosted Topside Driver Supply Voltage NUMBER RUN/SS 1 24 BOOST (BOOST) ... 42V to – 0.3V V 2 23 ON TG LTC3713EG VIN1, ION, SW1, SENSE+ Voltages ... 36V to – 0.3V PGOOD 3 22 SW1 RUN/SS, PGOOD Voltages ... 7V to – 0.3V V 4 21 RNG SENSE+ FCB, VON, VRNG Voltages .. INTVCC + 0.3V to – 0.3V FCB 5 20 SENSE– ITH, VFB1, SENSE– Voltages ... 2.7V to – 0.3V I 6 19 TH PGND1 SW2 Voltage ... 36V to – 0.4V SGND1 7 18 BG V I 8 17 INTV FB2 Voltage ... VIN2 + 0.3V ON CC SHDN Voltage ... 10V V 9 16 FB1 VIN1 TG, BG, INTV SHDN 10 15 VIN2 CC Peak Currents .. 2A TG, BG, INTV SGND2 11 14 PGND2 CC RMS Currents .. 50mA V 12 13 SW2 Operating Ambient Temperature FB2 Range (Note 4) ... – 40°C to 85°C G PACKAGE 24-LEAD PLASTIC SSOP Junction Temperature (Note 2) .. 125°C TJMAX = 125°C, θJA = 130°C/ W Storage Temperature Range ... – 65°C to 150°C Lead Temperature (Soldering, 10 sec).. 300°C Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. VIN1 = 15V, VIN2 = 1.5V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Buck Regulator
IQ(VIN1) Input DC Supply Current (VIN1) Normal 900 2000 µA Shutdown Supply Current 15 30 µA VFB1 Feedback Reference Voltage ITH = 1.2V (Note 3) ● 0.792 0.800 0.808 V IFB1 Feedback Current (Note 3) –5 ±50 nA ∆VFB1(LINEREG) Feedback Voltage Line Regulation VIN1 = 4V to 30V, ITH = 1.2V (Note 3) 0.002 %/V ∆VFB1(LOADREG) Feedback Voltage Load Regulation ITH = 0.5V to 1.9V (Note 3) ● – 0.05 – 0.3 % gm(EA) Error Amplifier Transconductance ITH = 1.2V (Note 3) ● 1.4 1.7 2 mS VFCB Forced Continuous Threshold ● 0.76 0.8 0.84 V IFCB Forced Continuous Pin Current VFCB = 0.8V – 1 – 2 µA tON On-Time ION = 60µA, VON = 1.5V 200 250 300 ns ION = 30µA, VON = 1.5V 400 500 600 ns tON(MIN) Minimum On-Time ION = 180µA 50 100 ns tOFF(MIN) Minimum Off-Time 250 400 ns VSENSE(MAX) Maximum Current Sense Threshold VRNG = 1V, VFB1 = 0.76V ● 113 133 153 mV VPGND – VSW VRNG = 0V, VFB1 = 0.76V ● 79 93 107 mV VRNG = INTVCC, VFB1 = 0.76V ● 158 186 214 mV VSENSE(MIN) Minimum Current Sense Threshold VRNG = 1V, VFB1 = 0.84V – 67 mV VPGND – VSW VRNG = 0V, VFB1 = 0.84V – 47 mV VRNG = INTVCC, VFB1 = 0.84V – 93 mV ∆VFB1(OV) Output Overvoltage Fault Threshold 5.5 7.5 9.5 % ∆VFB1(UV) Output Undervoltage Fault Threshold 520 600 680 mV VRUN/SS(ON) RUN Pin Start Threshold ● 0.8 1.5 2 V VRUN/SS(LE) RUN Pin Latchoff Enable Threshold RUN/SS Pin Rising 4 4.5 V VRUN/SS(LT) RUN Pin Latchoff Threshold RUN/SS Pin Falling 3.5 4.2 V 3713fa 2