Moteur de recherche de fiches techniques de composants électroniques
Selected language     French  ▼
Nom de la pièce
         Description


LTC3832 Datasheet(Fiches technique) 1 Page - Linear Technology

Numéro de pièce LTC3832
Description  High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation
Télécharger  24 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo 

 
 1 page
background image
1
LTC3832/LTC3832-1
sn3832 3832fs
High Power Step-Down
Synchronous DC/DC Controllers
for Low Voltage Operation
s
VOUT as Low as 0.6V
s
High Power Switching Regulator Controller
for 3.3V-5V to 0.6V-3.xV Step-Down Applications
s
No Current Sense Resistor Required
s
Low Input Supply Voltage Range: 3V to 8V
s
Maximum Duty Cycle > 91% Over Temperature
s
All N-Channel External MOSFETs
s
Excellent Output Regulation:
±1% Over Line, Load
and Temperature Variations
s
High Efficiency: Over 95% Possible
s
Adjustable or Fixed 2.5V Output (LTC3832)
s
Programmable Fixed Frequency Operation: 100kHz to
500kHz
s
External Clock Synchronization
s
Soft-Start
s
Low Shutdown Current: <10
µA
s
Overtemperature Protection
s
Available in SO-8 and SSOP-16 Packages
s
CPU Power Supplies
s
Multiple Logic Supply Generator
s
Distributed Power Applications
s
High Efficiency Power Conversion
The LTC
®3832/LTC3832-1 are high power, high effi-
ciency switching regulator controllers optimized for
3.3V-5V to 0.6V-3.xV step-down applications. A preci-
sion internal reference and feedback system provide
±1% output regulation over temperature, load current
and line voltage variations. The LTC3832/LTC3832-1 use
a synchronous switching architecture with N-channel
MOSFETs. Additionally, the chip senses output current
through the drain-source resistance of the upper
N-channel MOSFET, providing an adjustable current limit
without a current sense resistor.
The LTC3832/LTC3832-1 operate with an input supply
voltage as low as 3V and with a maximum duty cycle of
>91% over temperature. They include a fixed frequency
PWM oscillator for low output ripple operation. The 300kHz
free-running clock frequency can be externally adjusted or
synchronizedwithanexternalsignalfrom100kHzto500kHz.
In shutdown mode, the LTC3832 supply current drops to
<10
µA.TheLTC3832-1istheSO-8versionwithoutcurrent
limit, frequency adjustment and shutdown functions.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Figure 1. High Efficiency 3.3V to 1V Power Converter
+
+
0.01
µF
15k
SS
COMP
GND
FB
VCC/PVCC2
G1
PVCC1
G2
LTC3832-1
680pF
0.1
µF
4.7
µF
MBR0520T1
Si9426DY
VOUT
1V
9A
L1
3.2
µH
Si9426DY
L1: SUMIDA CDEP105-3R2MC-88
COUT: PANASONIC EEFUEOD271R
COUT
270
µF
2V
3832 F01
0.1
µF
5.1
VIN
3V TO 7V
6.49k
4.32k
LOAD CURRENT (A)
40
60
80
100
50
70
90
24
6
8
3832 F01b
10
1
03
5
7
9
VIN = 3.3V
VOUT = 2.5V
VOUT = 1V
Efficiency
DESCRIPTIO
FEATURES
APPLICATIO S
TYPICAL APPLICATIO




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 


Datasheet Download



Numéro de composants électroniques

Numéro de pièceDescription des composantsHtml ViewFabricant
LTC3830High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation 1 2 3 4 5 MoreLinear Technology
SP6120Low Voltage AnyFETTM Synchronous Buck Controller Ideal for 2A to 10A High Performance DC-DC Power Converters 1 2 3 4 5 MoreSipex Corporation
SP6120Low Voltage AnyFETTM Synchronous Buck Controller Ideal for 2A to 10A High Performance DC-DC Power Converters 1 2 3 4 5 MoreSipex Corporation
SP6120BLow Voltage AnyFETTM Synchronous Buck Controller Ideal for 2A to 10A High Performance DC-DC Power Converters 1 2 3 4 5 MoreSipex Corporation
SP6123Low Voltage Synchronous Step-Down PWM Controller Ideal for 2A to 10A Small Footprint DC-DC Power Converters 1 2 3 4 5 MoreSipex Corporation
TPS51124DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS 1 2 3 4 5 MoreTexas Instruments
BBY52Silicon Tuning Diode High Q hyperabrupt dual tuning diode Designed for low tuning voltage operation 1 2 3 Siemens Semiconductor Group
LTC3713Low Input Voltage High Power No RSENSE Synchronous Buck DC/DC Controller 1 2 3 4 5 MoreLinear Technology
BAT60BSilicon Schottky Diode Rectifier Schottky diode for mobile communication Low voltage high inductane For power supply 1 2 3 Siemens Semiconductor Group
BBY53-02WSilicon Tuning Diode High Q hyperabrupt tuning diode Designed for low tuning voltage operation 1 2 3 Siemens Semiconductor Group

Lien URL

AllDATASHEET vous a-t-il été utile ?   [ DONATE ]  

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Favoris   |   Echange de liens   |   Fabricants
All Rights Reserved © Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , 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