LM5069

SNVS452D – SEPTEMBER 2006 – REVISED MAY 2013

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ELECTRICAL CHARACTERISTICS (continued)

to +125°C. Minimum and Maximum limits are specified through test, design, or statistical correlation. Typical values represent

following conditions apply: VIN = 48V.

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Units

OVLO delay

Delay to GATE high

55

µs

Delay to GATE low

11

OVLO bias current

OVLO = 2.4V

1

µA

Power Limit (PWR pin)

Power limit sense voltage (VIN-SENSE)

19

25

31

mV

25

mV

PWR pin current

20

µA

Gate Control (GATE pin)

Source current

Normal Operation, GATE-OUT = 5V

10

16

22

µA

Sink current

UVLO < 2.5V

1.75

2

2.6

mA

VIN - SENSE = 150 mV or VIN <

45

110

175

mA

Gate output voltage in normal operation

GATE-OUT voltage

11.4

12

12.6

V

Current Limit

Threshold voltage

VIN-SENSE voltage

48.5

55

61.5

mV

Response time

VIN-SENSE stepped from 0 mV to

45

µs

80 mV

SENSE input current

Enabled, SENSE = OUT

23

µA

Disabled, OUT = 0V

60

Circuit Breaker

Threshold voltage

VIN - SENSE

80

105

130

mV

Response time

VIN - SENSE stepped from 0 mV to

0.44

1.2

µs

150 mV, time to GATE low, no load

Timer (TIMER pin)

Upper threshold

3.76

4

4.16

V

Lower threshold

Restart cycles (LM5069-2)

1.187

1.25

1.313

V

End of 8th cycle (LM5069-2)

0.3

V

Re-enable Threshold (LM5069-1)

0.3

V

Insertion time current

3

5.5

8

µA

Sink current, end of insertion time

TIMER pin = 2V

1.0

1.5

2.0

mA

Fault detection current

51

85

120

µA

Fault sink current

1.25

2.5

3.75

µA

Fault Restart Duty Cycle

LM5069-2 only

0.5

%

Fault to GATE low delay

TIMER pin reaches 4.0V

12

µs

Power Good (PGD pin)

Threshold measured at SENSE-OUT

Decreasing

0.67

1.25

1.85

V

Increasing, relative to decreasing

0.95

1.25

1.55

threshold

Output low voltage

60

150

mV

Off leakage current

5

µA

4

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