Datasheet LTC1921 (Analog Devices) - 2

LTC1921
W W W U ABSOLUTE AXI U RATI GS (Note 1) All voltages referred to RTN
Supply Voltage Maximum Junction Temperature ... 150°C (V Operating Temperature Range (Note 3) A, VB, FUSE A, FUSE B) ... 100V to –100V Transient Voltage (V LTC1921C/LTC1921I .. – 40°C to 85°C A, VB, FUSE A, FUSE B) (Note 2) .. 0V to 200V Specified Temperature Range (Note 4) Transient Voltage (V LTC1921C/LTC1921I .. – 40°C to 85°C A, VB, FUSE A, FUSE B) (Note 2) .. 0V to –200V Storage Temperature Range ... – 65°C to 150°C OUT A, OUT B, OUT F Pins ... 0.3V to – 8V Lead Temperature (Soldering, 10 sec).. 300°C
U W U PACKAGE/ORDER I FOR ATIO
ORDER PART ORDER PART NUMBER TOP VIEW NUMBER TOP VIEW V 1 8 V A B V 1 A 8 VB LTC1921CMS8 FUSE A 2 7 FUSE B FUSE A 2 7 FUSE B LTC1921CS8 RTN 3 6 OUT B LTC1921IMS8 RTN 3 6 OUT B LTC1921IS8 OUT F 4 5 OUT A OUT F OUT A MS8 PACKAGE MS8 PART MARKING 4 5 S8 PART MARKING 8-LEAD PLASTIC MSOP S8 PACKAGE TJMAX = 150°C, θJA = 300°C/W LTZV 8-LEAD PLASTIC SO 1921 TJMAX = 150°C, θJA = 190°C/W LTZU 1921I 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. (Note 5) RTN = 0V, VA = –48V, VB = –48V, FUSE A = –48V, FUSE B = –48V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply
Supply Voltage Range (RTN – VA, RTN –␣ VB) ● 10 80 V Supply Current (IA + IB) –160 –250 µA ● –300 µA
Supply Monitor
Undervoltage Threshold ● –39.5 –37.5 V Undervoltage Recovery Threshold ● –43.5 –42.5 V Overvoltage Threshold ● –71.5 –68.5 V Overvoltage Threshold Hysteresis ● 1 1.6 V
Fuse Monitor
Input Resistance, FUSE A, FUSE B 11 MΩ Fuse Comparison Threshold |VFUSEA – VA|, |VFUSEB – VB| V LTC1921C ● 0.9 4.5 V LTC1921I ● 0.5 4.5 V
Output
Propagation Delay COUT = 100pF, Overdrive = 1V 220 µs Output Switch Resistance, OUT F, OUT A, OUT B VA = VB = –35V, VFUSEA = VFUSEB = 0V 25 Ω IOUT = 10mA ● 50 Ω 1921f 2