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LTC3251EMSE-1.2 Datasheet(PDF) 2 Page - Linear Technology |
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LTC3251EMSE-1.2 Datasheet(HTML) 2 Page - Linear Technology |
2 / 16 page 2 LTC3251/ LTC3251-1.2/LTC3251-1.5 32511215fa ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Minimum Operating Voltage (Notes 4,5) q 2.7 V VIN Maximum Operating Voltage (Note 5) q 5.5 V VIN Continuous Mode Operating Current IOUT = 0mA, VMD0 = 0, VMD1 = VIN q 35 mA Spread Spectrum Disabled MODE = VIN q 3.75 6 mA VIN Burst Mode Operating Current IOUT = 0mA, VMD0 = VIN, VMD1 = 0 q 35 60 µA Spread Spectrum Disabled MODE = VIN q 35 60 µA VIN Super Burst Mode Operating Current IOUT = 0mA, VMD0 = VIN, VMD1 = VIN q 10 15 µA Spread Spectrum Disabled MODE = VIN q 10 15 µA VIN Shutdown Current VMD0 = 0V, VMD1 = 0V (Note 5) q 0.01 1 µA VFB Regulation Voltage (LTC3251) IOUT = 0mA, 2.7V ≤ VIN ≤ 5.5V q 0.78 0.8 0.82 V VOUT Regulation Voltage (LTC3251-1.2) IOUT ≤ 200mA, 2.7V ≤ VIN ≤ 5.5V (Note 5) q 1.15 1.2 1.25 V Continuous Mode or Burst Mode Operation IOUT ≤ 300mA, 2.8V ≤ VIN ≤ 5.5V (Note 5) q 1.15 1.2 1.25 V IOUT ≤ 500mA, 3V ≤ VIN ≤ 5.5V (Note 5) 1.15 1.2 1.25 V VOUT Regulation Voltage (LTC3251-1.2) IOUT ≤ 40mA q 1.15 1.2 1.25 V Super Burst Operation VOUT Regulation Voltage (LTC3251-1.5) IOUT ≤ 100mA, 3.1V ≤ VIN ≤ 5.5V (Note 5) q 1.44 1.5 1.56 V Continuous Mode or Burst Mode Operation IOUT ≤ 200mA, 3.2V ≤ VIN ≤ 5.5V (Note 5) q 1.44 1.5 1.56 V IOUT ≤ 300mA, 3.3V ≤ VIN ≤ 5.5V (Note 5) q 1.44 1.5 1.56 V IOUT ≤ 500mA, 3.5V ≤ VIN ≤ 5.5V (Note 5) 1.44 1.5 1.56 V VOUT Regulation Voltage (LTC3251-1.5) IOUT ≤ 40mA q 1.44 1.5 1.56 V Super Burst Operation IOUT Continuous Output Current (LTC3251) VMD0 = 0, VMD1 = VIN or VMD0 = VIN, VMD1 = 0 q 500 mA IOUT Super Burst Output Current (LTC3251) VMD0 = VIN, VMD1 = VIN q 40 mA Load Regulation (LTC3251) 0mA ≤ IOUT ≤ 500mA, Referred to FB Pin 0.045 mV/mA ORDER PART NUMBER MSE PART MARKING EXPOSED PAD IS GND (PIN 11), MUST BE SOLDERED TO PCB TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W (Notes 1, 7) VIN to GND ................................................... –0.3V to 6V MD0, MD1, MODE and FB to GND . – 0.3V to (VIN + 0.3V) IOUT (Note 2) ...................................................... 650mA LTC3251EMSE The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, C1 = C2 = 1µF, CIN = 1µF, COUT = 10µF, VMODE = 0V for LTC3251-1.2V or LTC3251-1.5, VOUT = 1.5V for LTC3251, all capacitors ceramic, unless otherwise noted. LTB4 Operating Temperature Range (Note 3) ... –40 °C to 85°C Storage Temperature Range .................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec)................... 300 °C ORDER PART NUMBER MSE PART MARKING EXPOSED PAD IS GND (PIN 11), MUST BE SOLDERED TO PCB TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W LTC3251EMSE-1.2 LTC3251EMSE-1.5 LTAGM LTABE 1 2 3 4 5 MD0 VIN C1+ C1– GND 10 9 8 7 6 FB MD1 C2+ VOUT C2– TOP VIEW MSE PACKAGE 10-LEAD PLASTIC MSOP 11 1 2 3 4 5 MD0 VIN C1+ C1– GND 10 9 8 7 6 MODE MD1 C2+ VOUT C2– TOP VIEW MSE PACKAGE 10-LEAD PLASTIC MSOP 11 |
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