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LTC3456 Datasheet(PDF) 2 Page - Linear Technology |
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LTC3456 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 28 page  2 LTC3456 3456fa (Note 1) VBATT, VMAX Voltages ................................. – 0.3V to 6V VINT, VMAIN, VEXT, HSO Voltages ................ – 0.3V to 6V SW1, SW2_BK, SW2_BST Voltages ........... – 0.3V to 6V USB, USBHP, SUSPEND Voltages .............. –0.3V to 6V PWRKEY, PBSTAT, PWRON Voltages ........ –0.3V to 6V MODE, AO, EXT_PWR, RESET Voltages ..... –0.3V to 6V FB1, AIN, WALLFB Voltages ....................... –0.3V to 2V Junction Temperature .......................................... 125 °C Operating Temperature Range (Note 2) .. – 40 °C to 85°C Storage Temperature Range ................. – 65 °C to 125°C ABSOLUTE AXI U RATI GS ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VBATT = 2.4V, VINT = 3.3V, VPWRON = 2V, PWRKEY is open, VUSB = 0V, VWALLFB = 0V, unless otherwise specified. ORDER PART NUMBER LTC3456EUF TJMAX = 125°C, θJA = 37°C/ W, θJC = 2°C/ W EXPOSED PAD (PIN 25) IS PGND MUST BE SOLDERED TO PCB PACKAGE/ORDER I FOR ATIO UF PART MARKING Consult LTC Marketing for parts specified with wider operating temperature ranges. 3456 24 23 22 21 20 19 7 8 9 TOP VIEW 25 UF PACKAGE 24-LEAD (4mm × 4mm) PLASTIC QFN 10 11 12 6 5 4 3 2 1 13 14 15 16 17 18 AIN AO AGND VBATT SW1 PGND SUSPEND HSO VMAIN VINT SW2_BST SW2_BK PARAMETER CONDITIONS MIN TYP MAX UNITS Battery Voltage Range 1.8 3.2 V Quiescent Current (Battery Powered) (Note 3) Burst Mode ® Operation VMODE = 2V, VFB1 = 1V, VINT = 3.4V 180 250 µA PWM Operation VMODE = 0V, VFB1 = 1V, VINT = 3.4V 380 450 µA Shutdown VPWRON = 0V, VINT = 0V 0.1 1 µA VBATT Pin Current (Wall Powered) VWALLFB = 1.5V, VEXT = 5V (Note 4) 1 2 µA VBATT Pin Current (USB Powered) VUSB = 5V, VEXT = 5V (Note 4) 1 2 µA Switching Frequency Battery Powered VBATT = 2.4V 0.8 1 1.2 MHz USB or Wall Powered VEXT = 5V, VWALLFB = 1.5V 0.8 1 1.2 MHz Main Output VINT Voltage Regulation ● 3.22 3.3 3.38 V VINT Voltage Line Regulation VBATT = 1.8V to 3.2V ● 0.1 0.5 %/V Max Duty Cycle ● 80 87 % Switch Leakage (Battery Powered) VPWRON = 0V SW2_BST PMOS Switch VSW2_BST = 0V 0.1 1 µA SW2_BST NMOS Switch VSW2_BST = 3.3V 0.1 1 µA Switch On-Resistance (Battery Powered) SW2_BST PMOS Switch ISW2_BST = 150mA 0.8 Ω SW2_BST NMOS Switch ISW2_BST = –150mA 0.5 Ω Burst Mode is a registered trademark of Linear Technology Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ |
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