LTC1921 datasheet(2/12 Pages) LINER

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LTC1921

1921i

(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

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

°C

Operating Temperature Range

LTC1921CMS8 ........................................ 0

°C to 70°C

LTC1921IMS8 .................................... – 40

°C to 85°C

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

°C to 150°C

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

°C

ORDER PART

NUMBER

LTC1921CMS8

LTC1921IMS8

TJMAX = 150°C, θJA = 250°C/W

MS8 PART MARKING

LTZV

LTZU

FUSE A

RTN

OUT F

FUSE B

OUT B

OUT A

TOP VIEW

MS8 PACKAGE

8-LEAD PLASTIC MSOP

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 3) RTN = 0V, VA = –48V, VB = –48V, FUSE A = –48V,

FUSE B = –48V, unless otherwise noted.

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

ELECTRICAL CHARACTERISTICS

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: Transient voltage for less than 10

µs. This parameter is not 100%

tested. Voltage should not exceed 200V between any two pins.

Note 3: All currents into device pins are positive; all currents out of device

pins are negative. All voltages are referenced to RTN unless otherwise

specified.

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|

2.5

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

Output Switch Off Leakage

500

Output Switch Resistance in Undervoltage Lockout,

VA = VB = –10V, IOUT = 10mA

Ω

OUT F, OUT A, OUT B

VA = –10V, VB = 0V, IOUT = 10mA

Ω

VA = 0V, VB = –10V, IOUT = 10mA

Ω

LTC1921 Datasheet(PDF) 2 Page - Linear Technology

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