Datasheet LT1614 (Analog Devices) - 2

LT1614
W W W U ABSOLUTE AXI U A R TI GS (Note 1)
VIN, SHDN, LBO Voltage ... 12V Operating Temperature Range SW Voltage ... – 0.4V to 30V LT1614C ... 0°C to 70°C NFB Voltage .. – 3V LT1614I ... – 40°C to 85°C VC Voltage .. 2V Extended Commercial LBI Voltage .. 0V ≤ VLBI ≤ 1V Temperature Range (Note 2) .. – 40°C to 85°C Current into FB Pin .. ±1mA Storage Temperature Range .. – 65°C to 150°C Junction Temperature ... 125°C Lead Temperature (Soldering, 10 sec)... 300°C
U W U PACKAGE/ORDER I FOR ATIO
ORDER PART ORDER PART NUMBER NUMBER TOP VIEW TOP VIEW LT1614CMS8 LT1614CS8 NFB 1 8 LBO NFB 1 8 LBO V 2 7 LBI LT1614IMS8 LT1614IS8 C V 2 7 LBI C SHDN 3 6 VIN GND 4 5 SW SHDN 3 6 VIN MS8 PACKAGE GND 4 5 SW 8-LEAD PLASTIC MSOP MS8 PART MARKING S8 PART MARKING T S8 PACKAGE JMAX = 125°C, θJA = 160°C/W 8-LEAD PLASTIC SO LTID 1614 TJMAX = 125°C, θJA = 120°C/W LTJB 1614I Consult factory for Military grade parts.
ELECTRICAL CH C ARA TERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. Commercial Grade 0
°
C to 70
°
C. VIN = 1.5V, VSHDN = VIN unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Quiescent Current 1 2 mA VSHDN = 0V 5 10 µA Feedback Voltage ● – 1.21 – 1.24 – 1.27 V NFB Pin Bias Current (Note 3) VNFB = –1.24V ● – 2.5 – 4.5 – 7 µA Reference Line Regulation 1V ≤ VIN ≤ 2V 0.6 1.1 %/V 2V ≤ VIN ≤ 6V 0.3 0.8 %/V Minimum Input Voltage 0.92 1 V Maximum Input Voltage ● 6 V Error Amp Transconductance ∆I = 5µA 16 µmhos Error Amp Voltage Gain 100 V/V Switching Frequency ● 500 600 750 kHz Maximum Duty Cycle 73 80 % ● 70 80 % Switch Current Limit (Note 4) 0.75 1.2 A 2