Data Sheet

LT9890

SPECIFICATIONS

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Rev. 0 | 3 of 11

ELECTRICAL CHARACTERISTICS

The operating voltage range (VIP) = 12 V, the current from IP to IM (ISENSE) = 100 A, and the output resistor (ROUT) = 200 Ω, unless otherwise

noted. All currents into the device pins are positive, and all currents out of the device pins are negative. All voltages are referenced to GND,

unless otherwise noted.

Table 1. Electrical Characteristics

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

POWER SUPPLY CHARACTERISTICS

VIP

Voltage on the IP pin with respect to ground

2.7

65

V

Supply Current (IIP)

TJ = 25°C, IM floating

2.5

mA

VIP Undervoltage Lockout (VUVLO)

VIP ramping up

2.6

V

VUVLO Hysteresis

TJ = 25°C

190

mV

Start-Up Time (tSTART-UP)

TJ = 25°C, time from undervoltage lockout to output

current within 1%

200

µs

CURRENT SENSE CHARACTERISTICS (IP AND IM)

ISENSE

7.5

150

A

Current Path Resistance (RPATH)

Resistance from IP to IM1

150

325

µΩ

OUTPUT CHARACTERISTICS (IOUT)

Input-to-Output Current Ratio

TJ = 25°C

26,600

IOUT TUE

ISENSE = 7.5 A

±4.0

%

ISENSE = 15 A

±2

%

ISENSE = 30 A

±1.6

%

ISENSE = 45 A to 150 A

±1.3

%

Common-Mode Rejection Ratio (CMRR)2

TJ = 25°C, DC, VIP = 2.7 V and VIP = 65 V, ROUT =

200 Ω

92

dB

Small-Signal Bandwidth

TJ = 25°C, ISENSE = 7.5 A

0.7

MHz

TJ = 25°C, ISENSE = 150 A

3.2

MHz

Large-Signal Response Time (tRESP)

TJ = 25°C, ISENSE = 7.5 A to 150 A, IOUT settled to

within 0.1%

2

µs

Output Integrated Noise Relative to Output Current

TJ = 25°C, ISENSE = 150 A

0.075

%

1 Use the recommended PCB layout. See the Figure 17 section for further details. The current path resistance has a 3900 ppm temperature coefficient.

2 The CMRR is equal to (ROUT ΔV/IP ΔV)/(Averaged ROUT Voltage/Input Current, IIN, x Shunt Resistance, RSHUNT). ROUT is 200 Ω on the tester.