Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

PROTECTION FUNCTIONS

Over-Current Threshold

Voltage

•

48

60

72

mV

Pulse Skipping Mode

Threshold Voltage

NOSKIP = HIGH

7

11

15

mV

Zero Crossing Threshold

-4

+4

mV

Under-Voltage Threshold

Vprog

-13%

Vprog

-10%

Vprog

-7%

V

Upper Over-Voltage Threshold

Vprog

+7%

Vprog

+10%

Vprog

+13%

V

Lower Over-Voltage Threshold

Vprog

-4.5%

V

Over-Voltage Propagation

Time

1.5

µs

Under-Voltage Propagation

Time

1.5

µs

SOFT START

Soft start source current

3.2

4

4.8

µA

Soft start clamp voltage

3.1

V

OSCILLATOR AND SYNC

Fixed frequency

OSC =0V; FREQ = REG5

•

225

250

275

KHz

OSC = REG5 FREQ = REG5

•

180

200

220

KHz

Minimum Synchronizzable

external frequency

FREQ = REG5

OSC = EXTERNAL SIGNAL

120

KHz

Sync pulse width

Rising edge mode

200

ns

Sync pulse amplitude

3

5.5

V

fosc

Operating switching frequency Rext connected between

FREQ and GND, OSC

connect to REG5 or GND

Rext = 680k

Ω

Rext = 40k

Ω

•

100

1

kHz

MHz

HIGH AND LOW SIDE GATE DRIVERS

Output high source peak

current

HSTRAP = RSTRAP = REG5

550

mA

Output high sink impedance

HSTRAP = RSTRAP = REG5

3.5

Ω

Output high source peak

current

HSTRAP = RSTRAP = 12V

2

A

Output high sink impedance

HSTRAP - RSTRAP = 12V

2

Ω

Output low peak current

HSTRAP = RSTRAP = 5V

500

mA

Output low impedance

Itest = 100mA,

HSTRAP = RSTRAP = 5V

3

Ω

Output low peak current

HSTRAP = RSTRAP = 12V

2

A

Output low Impedance

HSTRAP = RSTRAP = 12V

2

Ω

Dead Time

GATE low to high

60

ns

ELECTRICAL CHARACTERISTICS (continued)

L5996

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