参数资料
型号: LTC1871EMS
厂商: Linear Technology
文件页数: 19/36页
文件大小: 0K
描述: IC REG CTRLR BST FLYBK CM 10MSOP
标准包装: 50
PWM 型: 电流模式
输出数: 1
频率 - 最大: 1MHz
占空比: 97%
电源电压: 2.5 V ~ 36 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 管件
LTC1871
APPLICATIONS INFORMATION
Table 1. Recommended Compone nt Manufacturers
VENDOR
AVX
BH Electronics
Coilcraft
Coiltronics
Diodes, Inc
Fairchild
General Semiconductor
International Recti?er
IRC
Kemet
Magnetics Inc
Microsemi
Murata-Erie
Nichicon
On Semiconductor
Panasonic
Sanyo
Sumida
Taiyo Yuden
TDK
Thermalloy
Tokin
Toko
United Chemicon
Vishay/Dale
Vishay/Siliconix
Vishay/Sprague
Zetex
COMPONENTS
Capacitors
Inductors, Transformers
Inductors
Inductors
Diodes
MOSFETs
Diodes
MOSFETs, Diodes
Sense Resistors
Tantalum Capacitors
Toroid Cores
Diodes
Inductors, Capacitors
Capacitors
Diodes
Capacitors
Capacitors
Inductors
Capacitors
Capacitors, Inductors
Heat Sinks
Capacitors
Inductors
Capacitors
Resistors
MOSFETs
Capacitors
Small-Signal Discretes
TELEPHONE
(207) 282-5111
(952) 894-9590
(847) 639-6400
(407) 241-7876
(805) 446-4800
(408) 822-2126
(516) 847-3000
(310) 322-3331
(361) 992-7900
(408) 986-0424
(800) 245-3984
(617) 926-0404
(770) 436-1300
(847) 843-7500
(602) 244-6600
(714) 373-7334
(619) 661-6835
(847) 956-0667
(408) 573-4150
(562) 596-1212
(972) 243-4321
(408) 432-8020
(847) 699-3430
(847) 696-2000
(605) 665-9301
(800) 554-5565
(207) 324-4140
(631) 543-7100
WEB ADDRESS
avxcorp.com
bhelectronics.com
coilcraft.com
coiltronics.com
diodes.com
fairchildsemi.com
generalsemiconductor.com
irf.com
irctt.com
kemet.com
mag-inc.com
microsemi.com
murata.co.jp
nichicon.com
onsemi.com
panasonic.com
sanyo.co.jp
sumida.com
t-yuden.com
component.tdk.com
aavidthermalloy.com
nec-tokinamerica.com
tokoam.com
chemi-com.com
vishay.com
vishay.com
vishay.com
zetex.com
Pulse skipping prevents a loss of control of the output at
very light loads and reduces output voltage ripple.
Ef?ciency Considerations: How Much Does V DS
Sensing Help?
The ef?ciency of a switching regulator is equal to the out-
put power divided by the input power ( × 100%). Percent
ef?ciency can be expressed as:
% Ef?ciency = 100% – (L1 + L2 + L3 + …),
where L1, L2, etc. are the individual loss components as a
percentage of the input power. It is often useful to analyze
individual losses to determine what is limiting the ef?ciency
and which change would produce the most improvement.
Although all dissipative elements in the circuit produce
losses, four main sources usually account for the majority
of the losses in LTC1871 application circuits:
1. The supply current into V IN . The V IN current is the sum
of the DC supply current I Q (given in the Electrical Char-
acteristics) and the MOSFET driver and control currents.
The DC supply current into the V IN pin is typically about
550μA and represents a small power loss (much less
than 1%) that increases with V IN . The driver current
results from switching the gate capacitance of the power
MOSFET; this current is typically much larger than the
DC current. Each time the MOSFET is switched on and
1871fe
19
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相关代理商/技术参数
参数描述
LTC1871EMS#PBF 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR
LTC1871EMS#TR 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR)
LTC1871EMS#TRPBF 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR)
LTC1871EMS-1#PBF 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR)
LTC1871EMS-1#TRPBF 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR)