ISL6227CAZ datasheet(11/27 Pages) INTERSIL

Part #	ISL6227CAZ

Description	Dual Mobile-Friendly PWM Controller with DDR Option

Download	27 Pages

Scroll/Zoom	100%

Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

Logo

11 / 27 page

11

FN9094.7

May 4, 2009

PG2/REF

This pin has a double function, depending on the mode of

operation.

When the chip is used as a dual channel PWM controller

(DDR = 0), the pin provides an open drain PGOOD2 function

for the second channel the same way as PG1. The pin is

pulled low when the second channel output is out of

-11% to +15% of the set value.

In DDR mode (DDR = 1), this pin is the output of the buffer

amplifier that takes VDDQ/2 voltage applied to OCSET2 pin

from the resister divider. It can source a typical 10mA

current.

OCSET2

In a dual channel application with DDR = 0, a resistor from

this pin to ground sets the overcurrent threshold for the

second channel controller. Its voltage is the buffered internal

0.9V reference.

In the DDR application with DDR = 1, this pin connects to the

center point of a resistor divider tracking the VDDQ/2. This

voltage is then buffered by an amplifier voltage follower and

sent to the PG2/REF pin. It sets the reference voltage of

Channel 2 for its regulation.

VCC

This pin powers the controller.

Typical Application

Figures 31 and 32 show the application circuits of a dual

channel DC/DC converter for a notebook PC.

The power supply in Figure 31 provides +2.5V and +1.8V

voltages for memory and the graphics interface chipset from

a +5.0VDC to a 28VDC battery voltage.

Figure 32 illustrates the application circuit for a DDR memory

power solution. The power supply shown in Figure 32

generates +2.5V VDDQ voltage from a battery. The +1.25V

VTT termination voltage tracks VDDQ/2 and is derived from

+2.5V VDDQ. To complete the DDR memory power

requirements, the +1.25V reference voltage is provided

through the PG2 pin.

ISL6227

Similar Part No. - ISL6227CAZ

Manufacturer	Part #	Datasheet	Description
Intersil Corporation	ISL6227CAZ	897Kb / 26P	Dual Mobile-Friendly PWM Controller with DDR Option
Intersil Corporation	ISL6227CAZ	861Kb / 28P	Dual Mobile-Friendly PWM Controller with DDR Option
Renesas Technology Corp	ISL6227CAZ	1Mb / 27P	Dual Mobile-Friendly PWM Controller with DDR Option
Intersil Corporation	ISL6227CAZ-T	897Kb / 26P	Dual Mobile-Friendly PWM Controller with DDR Option

More results

Similar Description - ISL6227CAZ

Manufacturer	Part #	Datasheet	Description
Intersil Corporation	ISL6227	897Kb / 26P	Dual Mobile-Friendly PWM Controller with DDR Option
Renesas Technology Corp	ISL6227	1Mb / 27P	Dual Mobile-Friendly PWM Controller with DDR Option
Intersil Corporation	ISL6227	861Kb / 28P	Dual Mobile-Friendly PWM Controller with DDR Option
Intersil Corporation	ISL6225	522Kb / 19P	Dual Mobile-Friendly PWM Controller with DDR Memory Option
Renesas Technology Corp	ISL6225	851Kb / 19P	Dual Mobile-Friendly PWM Controller with DDR Memory Option
Fairchild Semiconductor	FAN5236	501Kb / 19P	Dual Mobile-Friendly DDR / Dual-Output PWM Controller
ON Semiconductor	FAN5236	453Kb / 19P	Dual Mobile-Friendly DDR / Dual-Output PWM Controller Nov ember-2017, Rev. 2
Fairchild Semiconductor	FAN5236	199Kb / 20P	Dual Mobile-Friendly DDR / Dual-output PWM Controller
Fairchild Semiconductor	FAN5236	234Kb / 20P	Dual Mobile-Friendly DDR / Dual-output PWM Controller
Anpec Electronics Corop...	APW7108	746Kb / 28P	Dual Mobile-Friendly PWM Controller

More results

ISL6227CAZ Datasheet(PDF) 11 Page - Intersil Corporation

ISL6227CAZ Datasheet(HTML) 11 Page - Intersil Corporation

Similar Part No. - ISL6227CAZ

Similar Description - ISL6227CAZ

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Datasheet Download

Link URL