IL700D

Korzhenevskogo 12, Minsk, 220108, Republic of

Belarus

Fax:

+375 (17) 278 28 22,

Phone: +375 (17) 278 07 11, 212 24 70, 212 24 61,

212 69 16

E-mail: office@bms.by

URL: www.bms.by

1

The IL700D is a monolithic high voltage switching regulator-controllers with

PWM/PFM control that is specifically designed to operate from a rectified 220 VAC

line source. This device contain a reference voltage source, oscillation circuit, error

amplifier, phase compensation circuit, PWM control circuit, power supply 450 V

MOS-transistor, 700 V DMOS power switch, and other components. Since the

oscillation frequency is a high 600 kHz, with the addition of a small external

component, the IC can function as switching regulator with high efficiency.

The IL700D provides low-ripple power, high-efficiency, and excellent transient

characteristics thanks to a PWM control circuit capable of varying the duty ratio linearly

from 0% to 82% and optimized error amplifier, and phase compensation circuit.

The IL700D contains a PWM/PFM switching control circuit so that it operates

using PWM control with a duty ratio of 27% or higher and using PFM control with a

duty ratio of lower than 27% to ensure high efficiency in all load ranges.

Pin

No.

Pin Name

Function

1

NC

Not used

2

IC high power supply

3

NC

Not used

4

Vdd

IC internal low power supply

5

Vz

Voltage on zener diode

6

CVREF

Reference voltage source pass

capacitor connection pin

7

GND

Gnd pin

8

FB

FB for external setting type

9

CSS

Soft-start capacitor connection pin

10

SENSE

Current limit detection pin

11

NC

Not used

12

NC

Not used

13

NC

Not used

14

NC

Not used

15

SOURCE

Power switch source

16

SOURCE

Power switch source

17

SOURCE

Power switch source

18

NC

Not used

19

NC

Not used

20

DRAIN

Power Switch Drain