Moteur de recherche de fiches techniques de composants électroniques
  French  ▼

Delete All
ON OFF
ALLDATASHEET.FR

X  

Preview PDF Download HTML

LTC1474 Fiches technique(PDF) 5 Page - Linear Technology

No de pièce LTC1474
Description  Low Quiescent Current High Efficiency Step-Down Converters
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LTC1474 Fiches technique(HTML) 5 Page - Linear Technology

  LTC1474 Datasheet HTML 1Page - Linear Technology LTC1474 Datasheet HTML 2Page - Linear Technology LTC1474 Datasheet HTML 3Page - Linear Technology LTC1474 Datasheet HTML 4Page - Linear Technology LTC1474 Datasheet HTML 5Page - Linear Technology LTC1474 Datasheet HTML 6Page - Linear Technology LTC1474 Datasheet HTML 7Page - Linear Technology LTC1474 Datasheet HTML 8Page - Linear Technology LTC1474 Datasheet HTML 9Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 20 page
background image
5
LTC1474/LTC1475
FUNCTIONAL DIAGRA
LTC1474: LBI
LTC1475: LBI/OFF
+
+
+
×
1
µA
LBI/OFF
LBO
4.75
µs
1-SHOT
1.23V
REFERENCE
GND
1474/75 FD
4
2
8
1.23V
1M
3M
(5V VERSION)
1.68M
(3.3V VERSION)
READY
STRETCH
VCC
VIN
VIN
VOUT
VOUT/VFB
1
×
C
ON
V
LB
ON
5
SW
SENSE
RSENSE
(OPTIONAL)
20
×
100mV
WAKEUP
TRIGGER
OUT
LTC1474: RUN
LTC1475: ON
1
5
6
7
+
+
× CONNECTIONNOTPRESENTINLTC1474SERIES
CONNECTION PRESENT IN LTC1474 SERIES ONLY
3
OUTPUT DIVIDER IS
IMPLEMENTED EXTERNALLY IN
ADJUSTABLE VERSIONS
PIN FUNCTIONS
VOUT/VFB (Pin 1): Feedback of Output Voltage. In the fixed
versions, an internal resistive divider divides the output
voltage down for comparison to the internal 1.23V refer-
ence. In the adjustable versions, this divider must be
implemented externally.
LBO (Pin 2): Open Drain Output of the Low Battery
Comparator. This pin will sink current when Pin 3 is below
1.23V.
LBI/OFF (Pin 3): Input to Low Battery Comparator. This
input is compared to the internal 1.23V reference. For the
LTC1475, a momentary ground on this pin puts regulator
in shutdown mode.
GND (Pin 4): Ground Pin.
SW (Pin 5): Drain of Internal PMOS Power Switch. Cath-
ode of Schottky diode must be closely connected to this
pin.
SENSE (Pin 6): Current Sense Input for Monitoring Switch
Current and Source of Internal PMOS Power Switch.
Maximum switch current is programmed with a resistor
between SENSE and VIN pins.
VIN (Pin 7): Main Supply Pin.
RUN/ON (Pin 8): On LTC1474, voltage level on this pin
controls shutdown/run mode (ground = shutdown, open/
high = run). On LTC1475, a momentary ground on this pin
puts regulator in run mode. A 100k series resistor must be
used between Pin 8 and the switch or control voltage.


Html Pages

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


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
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