Datasheet LTC3404 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator |
| Seiten / Seite | 16 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order … |
| Dateiformat / Größe | PDF / 215 Kb |
| Dokumentensprache | Englisch |
ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order Options. ELECTRICAL CHARACTERISTICS. The
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LTC3404
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Supply Voltage (VIN)...– 0.3V to 7V TOP VIEW ITH, PLL LPF Voltage ..–0.3V to 2.7V RUN 1 8 PLL LPF I 2 7 SYNC/MODE RUN, V TH FB Voltages .. – 0.3V to VIN V 3 6 V FB IN SYNC/MODE Voltage .. – 0.3V to V GND 4 5 SW IN SW Voltage (DC) .. – 0.3V to (V MS8 PACKAGE IN + 0.3V) 8-LEAD PLASTIC MSOP P-Channel MOSFET Source Current (DC) ... 800mA TJMAX = 125°C, θJA = 125°C/W N-Channel MOSFET Sink Current (DC) ... 800mA ORDER PART NUMBER MS8 PART MARKING Peak SW Sink and Source Current .. 1.5A Operating Temperature Range (Note 2) LTC3404EMS8 LTKR LTC3404E/LTC3404I ... –40°C to 85°C LTC3404IMS8 LTCJR LTC3404MP .. –55°C to 125°C LTC3404MPMS8 LTCXG Junction Temperature (Note 3) .. 125°C
Order Options
Tape and Reel: Add #TR Storage Temperature Range ... – 65°C to 150°C Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Temperature (Soldering, 10 sec).. 300°C Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over –40
°
C to 85
°
C, otherwise specifications are TA = 25
°
C. VIN = 3.6V unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IVFB Feedback Current (Note 4) ● 4 30 nA VFB Regulated Output Voltage (Note 4) 0°C ≤ TA ≤ 85°C 0.784 0.8 0.816 V (Note 4) – 40°C ≤ TA ≤ 85°C ● 0.74 0.8 0.84 V ΔVOVL Output Overvoltage Lockout ΔVOVL = VOVL – VFB ● 20 50 110 mV ΔVFB Reference Voltage Line Regulation VIN = 2.65V to 6V (Note 4) 0.05 0.2 %/V VLOADREG Output Voltage Load Regulation Measured in Servo Loop; VITH = 0.9V to 1.2V ● 0.1 0.5 % Measured in Servo Loop; VITH = 1.6V to 1.2V ● – 0.1 – 0.5 % VIN Input Voltage Range ● 2.65 6 V IQ Input DC Bias Current (Note 5) Pulse Skipping Mode 2.65V < VIN < 6V, VSYNC/MODE = 0V, IOUT = 0A 400 700 μA Burst Mode Operation VSYNC/MODE = VIN, IOUT = 0A 10 15 μA Shutdown VRUN = 0V, VIN = 6V 0 1 μA fOSC Oscillator Frequency VFB = 0.8V ● 1.25 1.4 1.65 MHz VFB = 0V 200 kHz fSYNC SYNC Capture Range 1.0 1.7 MHz IPLL LPF Phase Detector Output Current Sinking Capability fPLLIN < fOSC ● 6 20 40 μA Sourcing Capability fPLLIN > fOSC ● –6 –20 –40 μA RPFET RDS(ON) of P-Channel MOSFET ISW = 100mA 0.5 0.7 Ω RNFET RDS(ON) of N-Channel MOSFET ISW = –100mA 0.6 0.8 Ω IPK Peak Inductor Current VIN = 3.3V, VFB = 0.7V, Duty Cycle < 35% 0.8 1.0 1.25 A ILSW SW Leakage VRUN = 0V, VSW = 0V or 6V, VIN = 6V ±0.01 ±1 μA VSYNC/MODE SYNC/MODE Threshold VSYNC/MODE Rising ● 0.3 1.0 1.5 V ISYNC/MODE SYNC/MODE Leakage Current ±0.01 ±1 μA VRUN RUN Threshold VRUN Rising ● 0.3 0.7 1.5 V IRUN RUN Input Current ±0.01 ±1 μA 3404fb 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Supply Voltage (VIN)...– 0.3V to 7V TOP VIEW ITH, PLL LPF Voltage ..–0.3V to 2.7V RUN 1 8 PLL LPF I 2 7 SYNC/MODE RUN, V TH FB Voltages .. – 0.3V to VIN V 3 6 V FB IN SYNC/MODE Voltage .. – 0.3V to V GND 4 5 SW IN SW Voltage (DC) .. – 0.3V to (V MS8 PACKAGE IN + 0.3V) 8-LEAD PLASTIC MSOP P-Channel MOSFET Source Current (DC) ... 800mA TJMAX = 125°C, θJA = 125°C/W N-Channel MOSFET Sink Current (DC) ... 800mA ORDER PART NUMBER MS8 PART MARKING Peak SW Sink and Source Current .. 1.5A Operating Temperature Range (Note 2) LTC3404EMS8 LTKR LTC3404E/LTC3404I ... –40°C to 85°C LTC3404IMS8 LTCJR LTC3404MP .. –55°C to 125°C LTC3404MPMS8 LTCXG Junction Temperature (Note 3) .. 125°C
Order Options
Tape and Reel: Add #TR Storage Temperature Range ... – 65°C to 150°C Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Temperature (Soldering, 10 sec).. 300°C Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over –40
°
C to 85
°
C, otherwise specifications are TA = 25
°
C. VIN = 3.6V unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IVFB Feedback Current (Note 4) ● 4 30 nA VFB Regulated Output Voltage (Note 4) 0°C ≤ TA ≤ 85°C 0.784 0.8 0.816 V (Note 4) – 40°C ≤ TA ≤ 85°C ● 0.74 0.8 0.84 V ΔVOVL Output Overvoltage Lockout ΔVOVL = VOVL – VFB ● 20 50 110 mV ΔVFB Reference Voltage Line Regulation VIN = 2.65V to 6V (Note 4) 0.05 0.2 %/V VLOADREG Output Voltage Load Regulation Measured in Servo Loop; VITH = 0.9V to 1.2V ● 0.1 0.5 % Measured in Servo Loop; VITH = 1.6V to 1.2V ● – 0.1 – 0.5 % VIN Input Voltage Range ● 2.65 6 V IQ Input DC Bias Current (Note 5) Pulse Skipping Mode 2.65V < VIN < 6V, VSYNC/MODE = 0V, IOUT = 0A 400 700 μA Burst Mode Operation VSYNC/MODE = VIN, IOUT = 0A 10 15 μA Shutdown VRUN = 0V, VIN = 6V 0 1 μA fOSC Oscillator Frequency VFB = 0.8V ● 1.25 1.4 1.65 MHz VFB = 0V 200 kHz fSYNC SYNC Capture Range 1.0 1.7 MHz IPLL LPF Phase Detector Output Current Sinking Capability fPLLIN < fOSC ● 6 20 40 μA Sourcing Capability fPLLIN > fOSC ● –6 –20 –40 μA RPFET RDS(ON) of P-Channel MOSFET ISW = 100mA 0.5 0.7 Ω RNFET RDS(ON) of N-Channel MOSFET ISW = –100mA 0.6 0.8 Ω IPK Peak Inductor Current VIN = 3.3V, VFB = 0.7V, Duty Cycle < 35% 0.8 1.0 1.25 A ILSW SW Leakage VRUN = 0V, VSW = 0V or 6V, VIN = 6V ±0.01 ±1 μA VSYNC/MODE SYNC/MODE Threshold VSYNC/MODE Rising ● 0.3 1.0 1.5 V ISYNC/MODE SYNC/MODE Leakage Current ±0.01 ±1 μA VRUN RUN Threshold VRUN Rising ● 0.3 0.7 1.5 V IRUN RUN Input Current ±0.01 ±1 μA 3404fb 2