Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

RT8011APF Datasheet(PDF) 3 Page - Richtek Technology Corporation

Part # RT8011APF
Description  2A, 4MHz, Synchronous Step-Down Regulator
PDF  17 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8011APF Datasheet(HTML) 3 Page - Richtek Technology Corporation

  RT8011APF Datasheet HTML 1Page - Richtek Technology Corporation RT8011APF Datasheet HTML 2Page - Richtek Technology Corporation RT8011APF Datasheet HTML 3Page - Richtek Technology Corporation RT8011APF Datasheet HTML 4Page - Richtek Technology Corporation RT8011APF Datasheet HTML 5Page - Richtek Technology Corporation RT8011APF Datasheet HTML 6Page - Richtek Technology Corporation RT8011APF Datasheet HTML 7Page - Richtek Technology Corporation RT8011APF Datasheet HTML 8Page - Richtek Technology Corporation RT8011APF Datasheet HTML 9Page - Richtek Technology Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 17 page
background image
RT8011/A
3
DS8011/A-00 August 2006
www.richtek.com
Functional Pin Description
Pin Number
Pin Function
RT8011
RT8011A
Pin Name
1
1
SHDN/RT
Oscillator Resistor Input. Connecting a resistor to ground from this pin sets
the switching frequency. Forcing this pin to VDD causes the device to be shut
down.
2
--
SYNC
External Clock Synchronization Input. The oscillation frequency can be
synchronized to an external oscillation applied to this pin. When tied to VDD,
internal oscillator is selected.
3
2
GND
Signal Ground. All small-signal components and compensation components
should connect to this ground, which in turn connects to PGND at one point.
4
3
LX
Internal Power MOSFET Switches Output. Connect this pin to the inductor.
5
4
PGND
Power Ground. Connect this pin close to the (
−) terminal of CIN and COUT.
6
5
PVDD
Power Input Supply. Decouple this pin to PGND with a capacitor.
7
6
VDD
Signal Input Supply. Decouple this pin to GND with a capacitor. Normally VDD
is equal to PVDD.
8
--
PGOOD
Power Good Indicator. Open-drain logic output that is pulled to ground when
the output voltage is not within ±12.5% of regulation point.
9
7
FB
Feedback Pin. Receives the feedback voltage from a resistive divider
connected across the output.
10
8
COMP
Error Amplifier Compensation Point. The current comparator threshold
increases with this control voltage. Connect external compensation elements
to this pin to stabilize the control loop.
Figure 4. RT8011A Layout Guide
Figure 3. RT8011 Layout Guide
Layout Guide
V
IN
GND
L1
V
OUT
GND
C
IN
C
OUT
V
OUT
V
IN
R
COMP
C
COMP
R2
R1
C
F
R
OSC
CIN must be placed between
VDD and GND as closer as
possible
LX should be
connected to
Inductor by wide
and short trace,
keep sensitive
compontents away
from this trace
Output capacitor must
be near RT8011
Connect the FB pin directly to feedback resistors. The
resistor divider must be connected between VOUT and
GND.
COMP
VDD
SHDN/RT
LX
GND
FB
PGOOD
PGND
PVDD
SYNC
5
6
7
8
4
3
2
10
9
1
RT8011
VIN
GND
L1
VOUT
GND
CIN
COUT
VOUT
RCOMP
CCOMP
R2
R1
CF
ROSC
CIN must be placed between
VDD and GND as closer as
possible
LX should be
connected to
Inductor by wide
and short trace,
keep sensitive
compontents away
from this trace
Output capacitor must
be near RT8011A
Connect the FB pin directly to feedback resistors. The
resistor divider must be connected between VOUT and
GND.
COMP
VDD
SHDN/RT
LX
GND
FB
PGND
PVDD
4
5
63
2
8
7
1
RT8011A



Html Pages

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


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com