IR3521

Page 8

V3.03

Note 1: Guaranteed by design, but not tested in production Note 2: VDACx Outputs are trimmed to compensate for Error & Amp

Remote Sense Amp input offset.

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

Under Voltage Threshold - Voutx

Increasing

Reference to VDACx

-325

-275

-225

mV

Under Voltage Threshold Hysteresis

5

53

110

mV

Output Voltage

I(PGOOD) = 4mA

150

300

mV

Leakage Current

V(PGOOD) = 5.5V

0

10

A

VCCL Activation Threshold

I(PGOOD) = 4mA, V(PGOOD) =

300mV

1.73

3.5

V

Over Voltage Protection (OVP) Comparators

Threshold at Power-up

1.60

1.73

1.83

V

Voutx Threshold Voltage

Compare to V(VDACx)

220

260

285

mV

OVP Release Voltage during Normal

Operation

Compare to V(VDACx)

-20

3

25

mV

Threshold during Dynamic VID down

1.8

1.85

1.9

V

Dynamic VID Detect Comparator Threshold Note 1

25

50

75

mV

Propagation Delay to IIN

Measure time from V(Voutx) >

V(VDACx) (250mV overdrive) to

V(IINx) transition to > 0.9 *

V(VCCL).

90

180

ns

OVP High Voltage

Measure V(VCCL)-V(ROSC/OVP)

0

1.2

V

OVP Power-up High Voltage

V(VCCLDRV)=1.8V. Measure

V(VCCL)-V(ROSC/OVP)

0

0.2

V

Propagation Delay to OVP

Measure time from V(Voutx) >

V(VDACx) (250mV overdrive) to

V(ROSC/OVP) transition to >1V.

150

300

nS

IIN Pull-up Resistance

5

15

Ω

Open Sense Line Detection

Sense Line Detection Active Comparator

Threshold Voltage

150

200

250

mV

Sense Line Detection Active Comparator

Offset Voltage

V(Voutx) < [V(VOSENx+) –

V(LGND)] / 2

29

62.5

90

mV

VOSEN+ Open Sense Line Comparator

Threshold

Compare to V(VCCL)

86.5

89.0

91.5

%

VOSEN- Open Sense Line Comparator

Threshold

0.36

0.40

0.44

V

Sense Line Detection Source Currents

V(Voutx) = 100mV

200

500

700

uA

VCCL Regulator Amplifier

Reference Feedback Voltage

1.15

1.2

1.25

V

VCCLFB Bias Current

-1

0

1

uA

VCCLDRV Sink Current

10

40

mA

UVLO Start Threshold

Compare to V(VCCL)

89.0

93.5

97.0

%

UVLO Stop Threshold

Compare to V(VCCL)

81.0

85.0

89.0

%

Hysteresis

Compare to V(VCCL)

7.0

8.25

9.5

%

ENABLE, PWROK Inputs

Threshold Increasing

1.3

1.65

1.9

V

Threshold Decreasing

0.8

0.99

1.2

V

Threshold Hysteresis

470

620

770

mV

Bias Current

0V ≤ V(x) ≤ 3.5V, SVC not asserted

-5

0

5

uA

PWROK VFIX Mode Threshold

3.3

V

(VCCL

+3.3)(V) / 2

VC

CL

V

General

VCCL Supply Current

3.5

10

15

mA