Datasheet LTC3701 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | 2-Phase, Low Input Voltage, Dual Step-Down DC/DC Controller |
| Seiten / Seite | 20 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL … |
| Dateiformat / Größe | PDF / 261 Kb |
| Dokumentensprache | Englisch |
ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL CHARACTERISTICS The
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LTC3701
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Supply Voltage (V TOP VIEW ORDER PART IN) .. – 0.3V to 10V SENSE1–, SENSE2–, PGATE1, PGATE2, NUMBER SENSE1– 1 16 SENSE1+ PLLLPF, SENSE1+, SENSE2+, I 2 15 TH/RUN1 VIN LTC3701EGN EXTCLK/MODE Voltages .. – 0.3V to (VIN + 0.3V) V 3 14 FB1 PGATE1 V SGND 4 13 PGND FB1, VFB2, ITH/RUN1, I V 5 12 PGATE2 TH/RUN2 Voltages .. – 0.3V to 2.4V FB2 PGOOD Voltage .. – 0.3V to 10V I 6 11 TH/RUN2 PGOOD GN PART PGATE1, PGATE2 Peak Output Current (<10µs) ... 1A PLLLPF 7 10 EXTCLK/MODE MARKING SENSE2– 8 9 SENSE2+ Operating Ambient Temperature Range 3701 (Note 2) ...–40°C to 85°C GN PACKAGE 16-LEAD PLASTIC SSOP Storage Ambient Temperature Range ... – 65°C to 150°C TJMAX = 150°C, θJA = 140°C/W Junction Temperature (Note 3) .. 125°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. VIN = 4.2V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops
Input DC Supply Current (Note 4) Normal Operation 2.5V < VIN < 9.8V 460 780 µA Sleep Mode 2.5V < VIN < 9.8V 305 470 µA Shutdown 2.5V < VIN < 9.8V, ITH/RUN1 = ITH/RUN2 = 0V 9 28 µA UVLO VIN < UVLO Threshold 18 30 µA Undervoltage Lockout Threshold VIN Falling ● 1.55 2.00 2.50 V VIN Rising 1.70 2.12 2.55 V Shutdown Threshold at ITH/RUN1, 2 0.2 0.35 0.5 V Start-Up Current Source on ITH/RUN1, 2 VITH/RUN1, 2 = 0V 0.25 0.5 0.85 µA Regulated Feedback Voltage 0°C to 70°C (Note 5), ITH/RUN = 1.3V ● 0.784 0.8 0.816 V –40°C to 85°C (Note 5) ● 0.774 0.8 0.826 V Output Voltage Line Regulation 2.5V < VIN < 9.8V (Note 5) 0.05 0.20 mV/V Output Voltage Load Regulation ITH/RUN = 0.9V (Note 5) 0.2 0.8 % ITH/RUN = 1.6V – 0.2 – 0.8 % VFB1, 2 Input Current (Note 5) 10 50 nA Output Overvoltage Protect Threshold Measured at VFB 0.835 0.88 0.930 V Output Overvoltage Protect Hysteresis 20 mV Gate Drive 1, 2 Rise Time CL = 3000pF 40 ns Gate Drive 1, 2 Fall Time CL = 3000pF 40 ns Maximum Current Sense Voltage (SENSE+ – SENSE–) (Note 6) 95 120 145 mV Soft-Start Current Sense Voltage Step 30 mV Time to Maximum Sense Voltage 2048 Cycles 3701fa 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Supply Voltage (V TOP VIEW ORDER PART IN) .. – 0.3V to 10V SENSE1–, SENSE2–, PGATE1, PGATE2, NUMBER SENSE1– 1 16 SENSE1+ PLLLPF, SENSE1+, SENSE2+, I 2 15 TH/RUN1 VIN LTC3701EGN EXTCLK/MODE Voltages .. – 0.3V to (VIN + 0.3V) V 3 14 FB1 PGATE1 V SGND 4 13 PGND FB1, VFB2, ITH/RUN1, I V 5 12 PGATE2 TH/RUN2 Voltages .. – 0.3V to 2.4V FB2 PGOOD Voltage .. – 0.3V to 10V I 6 11 TH/RUN2 PGOOD GN PART PGATE1, PGATE2 Peak Output Current (<10µs) ... 1A PLLLPF 7 10 EXTCLK/MODE MARKING SENSE2– 8 9 SENSE2+ Operating Ambient Temperature Range 3701 (Note 2) ...–40°C to 85°C GN PACKAGE 16-LEAD PLASTIC SSOP Storage Ambient Temperature Range ... – 65°C to 150°C TJMAX = 150°C, θJA = 140°C/W Junction Temperature (Note 3) .. 125°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. VIN = 4.2V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops
Input DC Supply Current (Note 4) Normal Operation 2.5V < VIN < 9.8V 460 780 µA Sleep Mode 2.5V < VIN < 9.8V 305 470 µA Shutdown 2.5V < VIN < 9.8V, ITH/RUN1 = ITH/RUN2 = 0V 9 28 µA UVLO VIN < UVLO Threshold 18 30 µA Undervoltage Lockout Threshold VIN Falling ● 1.55 2.00 2.50 V VIN Rising 1.70 2.12 2.55 V Shutdown Threshold at ITH/RUN1, 2 0.2 0.35 0.5 V Start-Up Current Source on ITH/RUN1, 2 VITH/RUN1, 2 = 0V 0.25 0.5 0.85 µA Regulated Feedback Voltage 0°C to 70°C (Note 5), ITH/RUN = 1.3V ● 0.784 0.8 0.816 V –40°C to 85°C (Note 5) ● 0.774 0.8 0.826 V Output Voltage Line Regulation 2.5V < VIN < 9.8V (Note 5) 0.05 0.20 mV/V Output Voltage Load Regulation ITH/RUN = 0.9V (Note 5) 0.2 0.8 % ITH/RUN = 1.6V – 0.2 – 0.8 % VFB1, 2 Input Current (Note 5) 10 50 nA Output Overvoltage Protect Threshold Measured at VFB 0.835 0.88 0.930 V Output Overvoltage Protect Hysteresis 20 mV Gate Drive 1, 2 Rise Time CL = 3000pF 40 ns Gate Drive 1, 2 Fall Time CL = 3000pF 40 ns Maximum Current Sense Voltage (SENSE+ – SENSE–) (Note 6) 95 120 145 mV Soft-Start Current Sense Voltage Step 30 mV Time to Maximum Sense Voltage 2048 Cycles 3701fa 2