6.5 Electrical Characteristics (continued)

at VS = 85 V, TA = 25°C, RL = 10 kΩ to mid-supply, IOUT limit set to 100 mA, and VCM = VOUT = mid-supply (unless otherwise

noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Continuous output

current, dc

VS = 85 V, RCL = 2.29 kΩ, ILIMIT = 250 mA

±250

mA

CLOAD

Capacitive load

drive

See typical curves

pF

ZO

Open-loop output

impedance

See typical curves

Ω

Output impedance

Output disabled, V– < VOUT < V+

100

MΩ

Output capacitance Output disabled

56

pF

CURRENT LIMIT

ILIMIT

Current limit

±25

±250

mA

Current limit

accuracy(3)

Sourcing,

RL = 10 Ω to mid-supply

ILIMIT = 25 mA,

VLIMIT = 3.33 V

17

29

mA

ILIMIT = 50 mA,

VLIMIT = 2.98 V

42

55

ILIMIT = 100 mA,

VLIMIT = 2.27V

94

107

ILIMIT = 250 mA,

VLIMIT = 0.14 V

237

263

Sinking,

RL = 10 Ω to mid-supply

ILIMIT = 25 mA,

VLIMIT = 3.33 V

10

45

ILIMIT = 50 mA,

VLIMIT = 2.98 V

35

68

ILIMIT = 100 mA,

VLIMIT = 2.27 V

85

115

ILIMIT = 250 mA,

VLIMIT = 0.14 V

235

275

Current limit

equation

Resistor set, RCL connected between ILIMIT pin and V–

(3.687 V × 4000) / (56.7 kΩ + RCL)

mA

Voltage set, VLIMIT connected to ILIMIT pin and

referenced to V–

4000 × (3.687 V – VLIMIT) / 56.7 kΩ

STATUS FLAG PIN (Referenced to E/D Com)

Status flag delay

Overcurrent delay

10

µs

Overcurrent recovery delay

10

Thermal shutdown

Alarm (status flag high)

170

°C

Return to normal operation (status flag low)

150

Status flag output

voltage

Normal operation

See typical curves

E/D PIN

VE/D

E/D voltage(1)

Enable, pin open or forced high(2)

E/D Com + 1.5

E/D Com + 5.5

V

Disable, pin forced low(2)

E/D Com

E/D Com + 0.5

IE/D

E/D input current

50

µA

Output disable time

12

µs

Output enable time

18

µs

E/D COM PIN

E/D Com voltage

(V–)

(V+) – 6

V

POWER SUPPLY

IQ

Quiescent current

3.25

3.75

mA

TA = –40°C to +125°C

4

Output disabled

0.25

(1)

For information on the output enable and disable feature see Section 7.3.4.

(2)

Enable and disable voltage thresholds can vary near the maximum temperature range; see Figure 6-67.

(3)

Proper output swing headroom is necessary to maintain current limit accuracy; see Figure 6-19. to Figure 6-34.

OPA593

SBOS659C – JANUARY 2022 – REVISED DECEMBER 2022

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