Datasheet LT1618 (Analog Devices) - 2

HerstellerAnalog Devices
BeschreibungConstant-Current/Constant-Voltage 1.4MHz Step-Up DC/DC Converter
Seiten / Seite16 / 2 — ABSOLUTE AXI U. RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL …
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ABSOLUTE AXI U. RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL CHARACTERISTICS The

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

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LT1618
W W W U ABSOLUTE AXI U RATI GS (Note 1)
VIN, SHDN Voltage ... 18V Junction Temperature ... 125°C SW Voltage .. 36V Operating Temperature Range (Note 2) .. – 40°C to 85°C ISP, ISN Voltage .. 36V Storage Temperature Range IADJ Voltage ... 6V MSOP ... – 65°C to 150°C FB Voltage .. 1.5V DFN ... – 65°C to 125°C VC Voltage .. 1.5V Lead Temperature (Soldering, 10 sec) (MSOP) .. 300°C
U W U PACKAGE/ORDER I FOR ATIO
TOP VIEW ORDER PART ORDER PART NUMBER NUMBER FB 1 10 TOP VIEW VC ISN 2 9 SHDN FB 1 10 VC ISP 3 11 8 V LT1618EDD ISN 2 9 SHDN LT1618EMS IN ISP 3 8 VIN I 4 7 SW ADJ I 4 ADJ 7 SW GND 5 6 NC GND 5 6 SW DD PART MS PART MS PACKAGE DD PACKAGE MARKING 10-LEAD PLASTIC MSOP MARKING 10-LEAD (3mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 160°C/W TJMAX = 125°C, θJA = 43°C/W, θJC = 3°C/W EXPOSED PAD (PIN 11) IS GND AND LAFQ LTNH MUST BE SOLDERED TO PCB Consult LTC marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The

denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 1.6V, VSHDN = 1.6V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage 1.6 18 V Quiescent Current VSHDN = 1.6V, Not Switching 1.8 2.7 mA VSHDN = 0V 0.1 1 µA Reference Voltage Measured at FB Pin 1.250 1.263 1.276 V ● 1.243 1.263 1.283 V Reference Voltage Line Regulation 1.6V < VIN < 18V 0.01 0.03 %/V FB Pin Bias Current VFB = 1.263V, VIN = 1.8V ● ±2 ±12 nA Error Amplifier Voltage Gain 180 V/V Error Amplifier Transconductance ∆IC = ± 5µA 160 µmho Error Amplifier Sink Current VFB = 1.35V, VC = 1V 15 µA Error Amplifier Source Current VFB = 1.10V, VC = 1V 30 µA Current Sense Voltage (ISP, ISN) VFB = 0V, VIADJ = 0V ● 47.5 50 52.5 mV ISP, ISN Pin Bias Currents (Note 3) V ISP = 1.85V, VISN = 1.80V, VIADJ = 0V 50 80 µA (ISP, ISN) Common Mode Minimum Voltage 1.8 V Switching Frequency VFB = 1V 1.25 1.4 1.6 MHz VFB = 0V 550 kHz Maximum Switch Duty Cycle ● 88 92 % Switch Current Limit (Note 4) 1.5 2.1 2.8 A sn1618 1618fas 2