THERMAL DATA

Symbol

Parameter

SO 8

MINIDIP

Unit

Thermal Resistance Junction-ambient

150

100

°C/W

PIN FUNCTIONS

N.

Name

Function

1

INV

Inverting input of the error amplifier. A resistive divider is connected between the output

regulated voltage and this point, to provide voltage feedback.

2

COMP

Output of error amplifier. A feedback compensation network is placed between this pin and

the INV pin.

3

MULT

Input of the multiplier stage. A resistive divider connects to this pin the rectified mains. A

voltage signal, proportional to the rectified mains, appears on this pin.

4

CS

Input to the comparator of the control loop. The current is sensed by a resistor and the

resulting voltage is applied to this pin.

5

ZCD

Zero current detection input. If it is connected to GND, the device is disabled.

6

GND

Current return for driver and control circuits.

7

GD

Gate driver output. A push pull output stage is able to drive the Power MOS with peak current

of 400mA (source and sink).

Supply voltage of driver and control circuits.

PIN CONNECTION

ABSOLUTE MAXIMUM RATINGS

Symbol

Pin

Parameter

Value

Unit

30

mA

7

Output Totem Pole Peak Current (2

µs)

±700

mA

INV, COMP

MULT

1, 2, 3

Analog Inputs & Outputs

-0.3 to 7

V

CS

4

Current Sense Input

-0.3 to 7

V

ZCD

5

Zero Current Detector

50 (source)

-10 (sink)

mA

mA

°C

(Minidip)

(SO8)

1

0.65

W

Junction Temperature Operating Range

-25 to 150

°C

Storage Temperature

-55 to 150

°C

L6561

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