L6566B datasheet(13/51 Pages) STMICROELECTRONICS

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L6566B

Electrical characteristics

13/51

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

Reference voltage

VREF

Output voltage

(1) T

J = 25 °C; IREF = 1 mA

4.95

5.05

VREF

Total variation

IREF = 1 to 5 mA,

Vcc = 10.6 to 23 V

4.9

5.1

IREF

Short circuit current

VREF = 0

Sink capability in UVLO

Vcc = 6 V; Isink = 0.5 mA

0.2

0.5

VOV

Overvoltage threshold

5.3

5.7

Internal oscillator

fsw

Oscillation frequency

Operating range

300

kHz

TJ = 25 °C, VZCD = 0,

MODE/SC = open

100

105

Vcc =12 to 23 V, VZCD = 0,

MODE/SC = open

100

107

VOSC

Voltage reference

(3)

0.97

1.03

Dmax

Maximum duty cycle

MODE/SC = open,

VCOMP = 5 V

Brownout protection

Vth

Threshold voltage

Voltage falling (turn-off)

0.432

0.450

0.468

Voltage rising (turn-on)

0.452

0.485

0.518

IHys

Current hysteresis

Vcc > 5 V, VVFF = 0.3 V

µA

VAC_OK_CL Clamp level

(1) I

AC_OK = 100 µA

33.15

3.3

Line voltage feedforward

IVFF

Input bias current

VVFF = 0 to 3 V, VZCD < VZCDth

-1

µA

VZCD > VZCDth

-0.7

-1

VVFF

Linear operation range

0 to 3

VOFF

IC disable voltage

3.15

3.3

VVFFlatch

Latch-off/clamp level

VZCD > VZCDth

6.4

Control voltage gain (3)

VVFF = 1 V, VCOMP = 4 V

0.4

V/V

KFF

Feedforward gain (3)

VVFF = 1 V, VCOMP = 4 V

0.04

V/V

Table 4.

Electrical characteristics (continued)

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