Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

LTC3621 Datasheet(PDF) 6 Page - Analog Devices

Part # LTC3621
Description  Quad 17V, 1.25A Parallelable Synchronous Step-Down Regulator with Ultralow Quiescent Current
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC3621 Datasheet(HTML) 6 Page - Analog Devices

Back Button LTC3621 Datasheet HTML 2Page - Analog Devices LTC3621 Datasheet HTML 3Page - Analog Devices LTC3621 Datasheet HTML 4Page - Analog Devices LTC3621 Datasheet HTML 5Page - Analog Devices LTC3621 Datasheet HTML 6Page - Analog Devices LTC3621 Datasheet HTML 7Page - Analog Devices LTC3621 Datasheet HTML 8Page - Analog Devices LTC3621 Datasheet HTML 9Page - Analog Devices LTC3621 Datasheet HTML 10Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 20 page
background image
LTC3644/LTC3644-2
6
Rev. 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Load Step at 1MHz
Start-Up Operation
Burst Mode Operation
Pulse-Skipping Operation
TA = 25°C, unless otherwise noted.
VIN = 12V
VOUT = 2.5V
ILOAD = 100mA to 1.1A
L = 3.3µH
COUT = 47µF
25µs/DIV
IL
1A/DIV
VOUT
AC–COUPLED
200mA/DIV
ILOAD
1A/DIV
3644 G15
VIN = 12V
VOUT = 5V
fSW = 1MHz
L = 4.7µH
COUT = 47µF
500µs/DIV
RUN
5V/DIV
VOUT
2V/DIV
PGOOD
2V/DIV
IL
200mA/DIV
3644 G17
VIN = 12V
VOUT = 3.3V
ILOAD = 25mA
fSW = 1MHz
L = 4.7µH
4µs/DIV
VOUT
AC–COUPLED
50mV/DIV
SW
10V/DIV
IL
500mA/DIV
3644 G18
VIN = 12V
VOUT = 3.3V
ILOAD = 10mA
fSW = 1MHz
L = 4.7µH
4µs/DIV
VOUT
AC–COUPLED
50mV/DIV
SW
10V/DIV
IL
200mA/DIV
3644 G19
Load Step at 2.25MHz
VIN = 12V
VOUT = 2.5V
ILOAD = 100mA to 1.1A
L = 1.8µH
COUT = 47µF
20µs/DIV
IL
1A/DIV
VOUT
AC–COUPLED
200mV/DIV
ISTEP
1A/DIV
3644 G16
FB1 (A6): Feedback Input to the Error Amplifier of Channel
1 Step-Down Regulator. Connect resistor divider tap to
this pin. The output voltage can be adjusted from 0.6V to
VIN by: VOUT = 0.6V • [1 + (R2/R1)].
FB2 (F6): Feedback Input to the Error Amplifier of Channel
2Step-DownRegulator.Connectresistordividertaptothis
pin. The output voltage can be adjusted from 0.6V to VIN
by: VOUT = 0.6V • [1 + (R2/R1)]. Connecting this pin to
INTVCCturnsthischannelintoaslavechanneltochannel1.
PIN FUNCTIONS
FB3 (F1): Feedback Input to the Error Amplifier of Channel
3Step-DownRegulator.Connectresistordividertaptothis
pin. The output voltage can be adjusted from 0.6V to VIN
by: VOUT = 0.6V • [1 + (R2/R1)]. Connecting this pin to
INTVCCturnsthischannelintoaslavechanneltochannel4.
FB4 (A1): Feedback Input to the Error Amplifier of Channel
4Step-DownRegulator.Connectresistordividertaptothis
pin. The output voltage can be adjusted from 0.6V to VIN
by: VOUT = 0.6V • [1 + (R2/R1)]. Connecting this pin to
INTVCCturnsthischannelintoaslavechanneltochannel1.



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


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