ELECTRICAL CHARACTERISTICS

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

VCC SUPPLY CURRENT

Supply current

UGATE and LGATE open

-

5

-

mA

POWER-ON

VOCSET = 4.5V

-

-

4.6

V

VOCSET = 4.5V

3.6

-

-

V

Rising VOCSET Threshold

-

1.26

-

V

OSCILLATOR

Free Running Frequency

RT = open

185

200

215

kHz

Total Variation

Ω,

Ω

-15

-

15

%

Ramp Amplitude

RT = open

-

1.9

-

V

REFERENCE and DAC

DACOUT voltage Accuracy

VID0, VID1, VID2, VID3 see

Table1

-1

-

1

%

ERROR AMPLIFIER

DC Gain

-

88

-

dB

GBW

Gain-Bandwidth Product

-

15

-

MHz

SR

Slew Rate

COMP = 10pF

-

10

-

V/

µs

GATE DRIVERS

Upper Gate Source

0.6

1

-

A

Upper Gate Sink

-

1.5

3

Ω

Lower Gate Source

1.2

2

-

A

Lower Gate Sink

-

1

2

Ω

PROTECTION

Overvoltage Trip

-

115

120

%

OCSET Current Source

170

200

230

µA

OVP Sourcing Current

60

mA

Soft Start Current

10

µA

N

°

Name

Description

20

RT

Oscillator Switching frequency pin. Connecting an external resistor from this pin to ground the

switching frequency is increased according to the equation:

= 200kHz +

5

(KΩ)

Connecting the resistor from this pin and the Vcc the Switching frequency is reduced

according to the equation:

= 200kHz −

4

(KΩ)

If the pin is not connected the switching frequency is 200kHz.

PIN FUNCTION (continued)

L6911B

4/7