Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

RT9243 Datasheet(PDF) 3 Page - Richtek Technology Corporation

Part No. RT9243
Description  Multi-Phase PWM Controller for CPU Core Power Supply
Download  18 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
Logo 

RT9243 Datasheet(HTML) 3 Page - Richtek Technology Corporation

 
Zoom Inzoom in Zoom Outzoom out
 3 / 18 page
background image
RT9243
3
DS9243-07 March 2007
www.richtek.com
Functional Pin Description
OVP (Pin 1)
Over voltage trip output.
PGOOD (Pin 2)
Power good open-drain output.
VID4 (Pin 3), VID3 (Pin 4), VID2 (Pin 5), VID1 (Pin 6),
VID0 (Pin 7) & VID125 (Pin 8)
DAC voltage identification inputs for VRD10.x. These pins
are internally pulled to 3V if left open.
VOSS (Pin 9)
VCORE initial value offset. Connect this pin to GND with a
resistor to set the offset value.
ADJ (Pin 10)
Current sense output for active droop adjust. Connect a
resistor from this pin to GND to set the load droop.
SS (Pin 11)
Connect this SS pin to GND with a capacitor to set the
soft-start time interval. Pulling this pin below 1V (ramp
valley of sawtooth wave in pulse width modulator) would
make all PWMs low, turn on low side MOSFETs and turn
off high side MOSFETs.
FB (Pin 12)
Inverting input of the internal error amplifier.
COMP (Pin 13)
Output of the error amplifier and input of the PWM
comparator.
VDIF (Pin 14)
VCORE differential sense output.
VSEN (Pin 19)
VCORE differential sense positive input.
SGND (Pin 20)
VCORE differential sense negative input.
GND (Pin 21)
Ground for the IC.
PWM1 (Pin 25), PWM2 (Pin 26), PWM3 (Pin 22) &
PWM4 (Pin 29)
PWM outputs for each driven channel. Connect these pins
to the PWM input of the MOSFET driver. For systems
which use 3 channels, connect PWM4 high. Two channel
systems connect PWM3 and PWM4 high.
ISN1 (Pin 18), ISN2 (Pin 17), ISN3 (Pin 16) & ISN4
(Pin 15)
RDS(ON) current sense inputs from each individual converter
channel sense component's GND node.
ISP1 (Pin 24), ISP2 (Pin 27), ISP3 (Pin 23) & ISP4
(Pin 28)
RDS(ON) current sense inputs for each individual converter
channel. Tie this pin to the component's sense node.
VCC (Pin 30)
IC power supply. Connect this pin to a 5V supply.
DVD (Pin 31)
Programmable power UVLO detection input. Trip threshold
= 2V at VDVD rising.
RT (Pin 32)
Switching frequency setting. Connect this pin to GND with
a resistor to set the frequency.
(k
Ω)
Frequency vs. RRT
0
50
100
150
200
250
300
350
400
450
0
10
20304050
6070
RRT


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn