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LTC1921

1921f

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1) All voltages referred to RTN

Supply Voltage

(VA, VB, FUSE A, FUSE B) ....................... 100V to –100V

Transient Voltage (VA, VB, FUSE A, FUSE B)

(Note 2) ........................................................ 0V to 200V

Transient Voltage (VA, VB, FUSE A, FUSE B)

(Note 2) ...................................................... 0V to –200V

OUT A, OUT B, OUT F Pins ......................... 0.3V to – 8V

ORDER PART

NUMBER

LTC1921CMS8

LTC1921IMS8

TJMAX = 150°C, θJA = 300°C/W

MS8 PART MARKING

LTZV

LTZU

Consult LTC Marketing for parts specified with wider operating temperature ranges.

The q 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)

Supply Current (IA + IB)

–160

–250

µA

–300

µA

Supply Monitor

Undervoltage Threshold

–39.5

–37.5

Undervoltage Recovery Threshold

–43.5

–42.5

Overvoltage Threshold

–71.5

–68.5

Overvoltage Threshold Hysteresis

1.6

Fuse Monitor

Input Resistance, FUSE A, FUSE B

Ω

Fuse Comparison Threshold |VFUSEA – VA|, |VFUSEB – VB|

LTC1921C

0.9

4.5

LTC1921I

0.5

4.5

Output

Propagation Delay

COUT = 100pF, Overdrive = 1V

220

µs

Output Switch Resistance, OUT F, OUT A, OUT B

VA = VB = –35V, VFUSEA = VFUSEB = 0V

Ω

IOUT = 10mA

Ω

Maximum Junction Temperature ......................... 150

°C

Operating Temperature Range (Note 3)

LTC1921C/LTC1921I .......................... – 40

°C to 85°C

Specified Temperature Range (Note 4)

LTC1921C/LTC1921I .......................... – 40

°C to 85°C

Storage Temperature Range ................. – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec).................. 300

°C

ORDER PART

NUMBER

LTC1921CS8

LTC1921IS8

S8 PART MARKING

1921

1921I

ELECTRICAL CHARACTERISTICS

FUSE A

RTN

OUT F

FUSE B

OUT B

OUT A

TOP VIEW

MS8 PACKAGE

8-LEAD PLASTIC MSOP

TOP VIEW

FUSE B

OUT B

OUT A

FUSE A

RTN

OUT F

S8 PACKAGE

8-LEAD PLASTIC SO

TJMAX = 150°C, θJA = 190°C/W

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