LM34926

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SNVS847E – JUNE 2012 – REVISED DECEMBER 2014

6.5 Electrical Characteristics

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

6.25

7.6

8.55

V

(2)

26

mA

4.15

4.5

4.9

V

300

mV

2.3

V

Nonswitching, FB = 3 V

1.75

mA

UVLO = 0 V

50

225

µA

UNDERVOLTAGE SENSING FUNCTION

UV Threshold

UV Rising

1.19

1.225

1.26

V

UV Hysteresis Input Current

UV = 2.5 V

–10

–20

-29

µA

Remote Shutdown Threshold

Voltage at UVLO Falling

0.32

0.66

V

Remote Shutdown Hysteresis

110

mV

REGULATION AND OVERVOLTAGE COMPARATORS

Internal Reference Trip Point for Switch

FB Regulation Level

1.2

1.225

1.25

V

ON

FB Overvoltage Threshold

Trip Point for Switch OFF

1.62

V

FB Bias Current

60

nA

SWITCH CHARACTERISTICS

0.8

1.8

Ω

0.45

1

Ω

Gate Drive UVLO

2.4

3

3.6

V

Gate Drive UVLO Hysteresis

260

mV

CURRENT LIMIT

Current Limit Threshold

390

575

750

mA

Current Limit Response Time

Time to Switch Off

150

ns

OFF-Time Generator (Test 1)

12

µs

OFF-Time Generator (Test 2)

2.5

µs

THERMAL SHUTDOWN

Thermal Shutdown Temperature

165

°C

Thermal Shutdown Hysteresis

20

°C

(1)

All hot and cold limits are ensured by correlating the electrical characteristics to process and temperature variations and applying

statistical process control.

(2)

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