数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

TC1303B-BH2EUNTR 数据表(PDF) 21 Page - Microchip Technology

部件名 TC1303B-BH2EUNTR
功能描述  500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output
Download  30 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

TC1303B-BH2EUNTR 数据表(HTML) 21 Page - Microchip Technology

Back Button TC1303B-BH2EUNTR Datasheet HTML 17Page - Microchip Technology TC1303B-BH2EUNTR Datasheet HTML 18Page - Microchip Technology TC1303B-BH2EUNTR Datasheet HTML 19Page - Microchip Technology TC1303B-BH2EUNTR Datasheet HTML 20Page - Microchip Technology TC1303B-BH2EUNTR Datasheet HTML 21Page - Microchip Technology TC1303B-BH2EUNTR Datasheet HTML 22Page - Microchip Technology TC1303B-BH2EUNTR Datasheet HTML 23Page - Microchip Technology TC1303B-BH2EUNTR Datasheet HTML 24Page - Microchip Technology TC1303B-BH2EUNTR Datasheet HTML 25Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 21 / 30 page
background image
© 2005 Microchip Technology Inc.
DS21949A-page 21
TC1303B
5.8
Design Example
VOUT1 =2.0V @ 500 mA
VOUT2 =3.3V @ 300 mA
VIN =5V±10%
L = 4.7µH
Calculate PWM mode inductor ripple current
Nominal Duty
Cycle = 2.0V/5.0V = 40%
P-channel
Switch-on time = 0.40 x 1/(2 MHz) = 200 ns
VL =(VIN-VOUT1)= 3V
ΔIL =(VL/L) x TON =128 mA
Peak inductor current:
IL(PK) =IOUT1+1/2ΔIL = 564 mA
Switcher power loss:
Use efficiency estimate for 1.8V from Figure 2-7
Efficiency = 84%, PDISS1 = 171 mW
Resistor Divider:
RTOP = 200 kΩ
RBOT = 133 kΩ
LDO Output:
PDISS2 =(VIN(MAX)
VOUT2(MIN))x IOUT2(MAX)
PDISS2 = (5.5V – (0.975) x 3.3V) x 300 mA
PDISS2 = 684.8 mW
Total
Dissipation = 171 mW + 685 mW = 856 mW
Junction Temp Rise and Maximum Ambient
Operating Temperature Calculations
10-Pin MSOP (4-Layer Board with internal Planes)
R
θJA =113° C/Watt
Junction Temp.
Rise = 856 mW x 113° C/Watt = 96.7°C
Max. Ambient
Temperature = 125°C - 96.7°C
Max. Ambient
Temperature = 28.3°C
10-Pin DFN
R
θJA = 41° C/Watt (4-Layer Board with
internal planes and 2 vias)
Junction Temp.
Rise = 856 mW x 41° C/Watt = 35.1°C
Max. Ambient
Temperature = 125°C - 35.1°C
Max. Ambient
Temperature = 89.9°C
This is above the 85°C max. ambient temperature.


类似零件编号 - TC1303B-BH2EUNTR

制造商部件名数据表功能描述
logo
Microchip Technology
TC1303B-1G0EMF MICROCHIP-TC1303B-1G0EMF Datasheet
791Kb / 38P
   500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output
2008
TC1303B-1G0EMFTR MICROCHIP-TC1303B-1G0EMFTR Datasheet
791Kb / 38P
   500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output
2008
TC1303B-1G0EUN MICROCHIP-TC1303B-1G0EUN Datasheet
791Kb / 38P
   500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output
2008
TC1303B-1G0EUNTR MICROCHIP-TC1303B-1G0EUNTR Datasheet
791Kb / 38P
   500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output
2008
TC1303B-1G1EMF MICROCHIP-TC1303B-1G1EMF Datasheet
791Kb / 38P
   500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output
2008
More results

类似说明 - TC1303B-BH2EUNTR

制造商部件名数据表功能描述
logo
Microchip Technology
TC1303A MICROCHIP-TC1303A_08 Datasheet
791Kb / 38P
   500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output
2008
TC1303A MICROCHIP-TC1303A Datasheet
635Kb / 36P
   500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output
2005
TC1313 MICROCHIP-TC1313_09 Datasheet
621Kb / 32P
   500 mA Synchronous Buck Regulator, 300 mA LDO
2009
TC1313 MICROCHIP-TC1313 Datasheet
542Kb / 28P
   500 mA Synchronous Buck Regulator, 300 mA LDO
2005
MCP1602 MICROCHIP-MCP1602 Datasheet
464Kb / 26P
   2.0 MHz, 500 mA Synchronous Buck Regulator with Power-Good
2007
MCP1601 MICROCHIP-MCP1601 Datasheet
683Kb / 22P
   500 mA Synchronous BUCK Regulator
2003
MCP1601 MICROCHIP-MCP1601_13 Datasheet
511Kb / 24P
   500 mA Synchronous BUCK Regulator
11/29/12
logo
Texas Instruments
TPS77401-EP TI1-TPS77401-EP Datasheet
463Kb / 23P
[Old version datasheet]   250-mA LDO VOLTAGE REGULATOR WITH POWER-GOOD OUTPUT
logo
Nisshinbo Micro Devices...
RP114X NISSHINBO-RP114X Datasheet
1Mb / 36P
   300 mA LDO REGULATOR
logo
Rohm
BD4275FP2-C ROHM-BD4275FP2-C Datasheet
572Kb / 23P
   500 mA Output LDO Regulator with Voltage Detector
More results


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 25 26 27 28 29 30


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
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