Datasheet LTC3549 (Analog Devices) - 2

制造商Analog Devices
描述250mA Low VIN Buck Regulator in 2mm × 3mm DFN
页数 / 页16 / 2 — ABSOLUTE AXI U. RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order …
文件格式/大小PDF / 370 Kb
文件语言英语

ABSOLUTE AXI U. RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order Options. The. ELECTRICAL CHARACTERISTICS

ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) Order Options The ELECTRICAL CHARACTERISTICS

该数据表的模型线

文件文字版本

LTC3549
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
TOP VIEW Input Supply Voltage ... –0.3V to 6V RUN, V FB FB, MODE Voltages ...–0.3V to (VIN + 0.3V) V RUN MODE SW Voltage < 100ns Pulse ...–0.3V to (V 6 5 4 IN + 0.3V) Operating Temperature Range (Note 2) ... –40°C to 85°C Junction Temperature (Note 3) ... 125°C 7 Storage Temperature Range .. –65°C to 125°C 1 2 3 INV GND SW DCB PACKAGE 6-LEAD (2mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 64°C/W EXPOSED PAD (PIN 7) IS GND MUST BE SOLDERED TO PCB ORDER PART NUMBER DCB PART MARKING LTC3549EDCB LBZR
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/ Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
The ELECTRICAL CHARACTERISTICS

denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C, VIN = 2.2V. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range ● 1.6 5.5 V VRUN RUN Threshold ● 0.3 0.7 1.1 V IRUN RUN Leakage Current VRUN = 0 or 2.2V 0.01 1 µA VMODE MODE Threshold ● 0.3 0.65 1.1 V IMODE MODE Leakage Current VMODE = 0 or 2.2V 0.01 1 µA VFB Regulated Feedback Voltage TA = 25°C (Note 4) ● 0.599 0.611 0.623 V 0°C ≤ TA ≤ 85°C (Note 4) 0.597 0.611 0.623 V –40°C ≤ TA ≤ 85°C (Note 4) 0.596 0.611 0.626 V IVFB Feedback Current ● ±30 nA ΔVOVL ΔVFBOVL Overvoltage Lockout ΔVOVL = ΔVFBOVL – VFB (Note 6) 40 60 80 mV ΔVFB Reference Voltage Line Regulation 1.6V < VIN < 5.5V (Note 4) ● 0.04 0.4 %/V ΔVOUT Output Voltage Line Regulation IOUT = 100mA, 1.6V < VIN < 5.5V (Note 7) 0.04 0.4 %/V IPK Peak Inductor Current VFB = 0.5V or VOUT = 90% 0.3 0.45 0.6 A VLOADREG Output Voltage Load Regulation Pulse Skip Mode, VOUT = 1.2V, 0.5 % 50mA < ILOAD < 250mA (Note 7) 3549f 2