Datasheet LTC3737 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Dual 2-Phase, No RSENSE DC/DC Controller with Output Tracking |
| Pages / Page | 24 / 2 — ABSOLUTE AXI U RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL … |
| File Format / Size | PDF / 282 Kb |
| Document Language | English |
ABSOLUTE AXI U RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL CHARACTERISTICS The
Model Line for this Datasheet
Text Version of Document
LTC3737
W W W U ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (VIN), PVIN1, PVIN2, Operating Temperature Range (Note 2) ... –40°C to 85°C SENSE1+, SENSE2+ .. – 0.3V to 10V Storage Ambient Temperature Range PGATE1, PGATE2, PLLLPF, RUN/SS, SYNC/MODE, QFN Package .. –65°C to 125°C TRACK, IPRG1, IPRG2 Voltages .. – 0.3V to (VIN + 0.3V) SSOP Package .. –65°C to 150°C VFB1, VFB2, ITH1, ITH2 Voltages .. – 0.3V to 2.4V Junction Temperature (Note 3) .. 125°C SW1, SW2 Voltages .. –2V to VIN + 1V or 10V Max Lead Temperature (Soldering, 10sec) PGOOD ... – 0.3V to 10V LTC3737EGN ... 300°C PGATE1, PGATE2 Peak Output Current (<10µs) ... 1A
U W U PACKAGE/ORDER I FOR ATIO
TOP VIEW TOP VIEW ORDER PART ) ORDER PART – + SW1 NUMBER NUMBER 1 24 SENSE1+ (SENSE1–) IN1 FB1V IPRG1 SW1 (SENSE1 SENSE1 PV NC IPRG1 2 23 PVIN1 LTC3737EGN LTC3737EUF 24 23 22 21 20 19 V 3 22 FB1 NC SYNC/ ITH1 1 18 I 4 21 SYNC/MODE MODE TH1 IPRG2 2 17 PGATE1 IPRG2 5 20 PGATE1 PLLLPF 3 16 PGND PLLLPF 6 19 PGND 25 SGND 4 15 PGATE2 SGND 7 18 PGATE2 VIN 5 14 RUN/SS V 8 17 IN RUN/SS TRACK 6 13 NC UF PART TRACK 9 16 NC MARKING 7 8 9 10 11 12 V 10 15 FB2 PVIN2 ) + – FB2 IN2 I 11 14 TH2 SENSE2+ V I TH2 SW2 PV 3737 SW2 PGOOD PGOOD 12 13 SENSE2 (SENSE2–) (SENSE2 UF PACKAGE GN PACKAGE 24-LEAD (4mm × 4mm) PLASTIC QFN 24-LEAD (NARROW) PLASTIC SSOP T T JMAX = 125°C, θJA = 37°C/W JMAX = 125°C, θJA = 130°C/W EXPOSED PAD IS PGND (PIN 25) MUST BE SOLDERED TO PCB Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 4.2V unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops
Input DC Supply Current (Note 4) Sleep Mode 220 325 µA Shutdown RUN/SS = 0V 9 20 µA UVLO VIN < UVLO Threshold –200mV 3 10 µA Undervoltage Lockout Threshold VIN Falling ● 1.95 2.25 2.55 V VIN Rising ● 2.15 2.45 2.75 V Shutdown Threshold at RUN/SS 0.45 0.65 0.85 V Start-Up Current Source RUN/SS = 0V 0.4 0.7 1 µA Regulated Feedback Voltage 0°C to 85°C (Note 5) 0.591 0.6 0.609 V –40°C to 85°C ● 0.588 0.6 0.612 V Output Voltage Line Regulation 2.75V < VIN < 9.8V (Note 5) 0.05 0.2 mV/V 3737fa 2
W W W U ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (VIN), PVIN1, PVIN2, Operating Temperature Range (Note 2) ... –40°C to 85°C SENSE1+, SENSE2+ .. – 0.3V to 10V Storage Ambient Temperature Range PGATE1, PGATE2, PLLLPF, RUN/SS, SYNC/MODE, QFN Package .. –65°C to 125°C TRACK, IPRG1, IPRG2 Voltages .. – 0.3V to (VIN + 0.3V) SSOP Package .. –65°C to 150°C VFB1, VFB2, ITH1, ITH2 Voltages .. – 0.3V to 2.4V Junction Temperature (Note 3) .. 125°C SW1, SW2 Voltages .. –2V to VIN + 1V or 10V Max Lead Temperature (Soldering, 10sec) PGOOD ... – 0.3V to 10V LTC3737EGN ... 300°C PGATE1, PGATE2 Peak Output Current (<10µs) ... 1A
U W U PACKAGE/ORDER I FOR ATIO
TOP VIEW TOP VIEW ORDER PART ) ORDER PART – + SW1 NUMBER NUMBER 1 24 SENSE1+ (SENSE1–) IN1 FB1V IPRG1 SW1 (SENSE1 SENSE1 PV NC IPRG1 2 23 PVIN1 LTC3737EGN LTC3737EUF 24 23 22 21 20 19 V 3 22 FB1 NC SYNC/ ITH1 1 18 I 4 21 SYNC/MODE MODE TH1 IPRG2 2 17 PGATE1 IPRG2 5 20 PGATE1 PLLLPF 3 16 PGND PLLLPF 6 19 PGND 25 SGND 4 15 PGATE2 SGND 7 18 PGATE2 VIN 5 14 RUN/SS V 8 17 IN RUN/SS TRACK 6 13 NC UF PART TRACK 9 16 NC MARKING 7 8 9 10 11 12 V 10 15 FB2 PVIN2 ) + – FB2 IN2 I 11 14 TH2 SENSE2+ V I TH2 SW2 PV 3737 SW2 PGOOD PGOOD 12 13 SENSE2 (SENSE2–) (SENSE2 UF PACKAGE GN PACKAGE 24-LEAD (4mm × 4mm) PLASTIC QFN 24-LEAD (NARROW) PLASTIC SSOP T T JMAX = 125°C, θJA = 37°C/W JMAX = 125°C, θJA = 130°C/W EXPOSED PAD IS PGND (PIN 25) MUST BE SOLDERED TO PCB Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 4.2V unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops
Input DC Supply Current (Note 4) Sleep Mode 220 325 µA Shutdown RUN/SS = 0V 9 20 µA UVLO VIN < UVLO Threshold –200mV 3 10 µA Undervoltage Lockout Threshold VIN Falling ● 1.95 2.25 2.55 V VIN Rising ● 2.15 2.45 2.75 V Shutdown Threshold at RUN/SS 0.45 0.65 0.85 V Start-Up Current Source RUN/SS = 0V 0.4 0.7 1 µA Regulated Feedback Voltage 0°C to 85°C (Note 5) 0.591 0.6 0.609 V –40°C to 85°C ● 0.588 0.6 0.612 V Output Voltage Line Regulation 2.75V < VIN < 9.8V (Note 5) 0.05 0.2 mV/V 3737fa 2
