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参数资料
| 型号： | LTC3872EDDB |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 3 X 2 MM, PLASTIC, MO-229WECD-1, DFN-8 |
| 文件页数： | 1/20页 |
| 文件大小： | 261K |
| 代理商： | LTC3872EDDB |
LTC3872
1
3872fa
No RSENSE
Current Mode Boost
DC/DC Controller
The LTC3872 is a constant frequency current mode
boost DC/DC controller that drives an N-channel power
MOSFET and requires very few external components. The
No RSENSE
TM architecture eliminates the need for a sense
resistor, improves efciency and saves board space.
The LTC3872 provides excellent AC and DC load and line
regulation with ±1.5% output voltage accuracy. It incor-
porates an undervoltage lockout feature that shuts down
the device when the input voltage falls below 2.3V.
High switching frequency of 550kHz allows the use of a
small inductor. The LTC3872 is available in an 8-lead low
prole (1mm) ThinSOTTM package and 8-pin 3mm
× 2mm
DFN package.
■ Telecom Power Supplies
■ 42V Automotive Systems
■ 24V Industrial Controls
■ IP Phone Power Supplies
■ No Current Sense Resistor Required
■ VOUT up to 60V
■ Constant Frequency 550kHz Operation
■ Internal Soft-Start and Optional External Soft-Start
■ Adjustable Current Limit
■ Pulse Skipping at Light Load
■ VIN Range: 2.75V to 9.8V
■ ±1.5% Voltage Reference Accuracy
■ Current Mode Operation for Excellent Line and Load
Transient Response
■ Low Prole (1mm) SOT-23 and 3mm
× 2mm DFN
Packages
High Efciency 3.3V Input, 5V Output Boost Converter
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
No RSENSE and ThinSOT are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6498466, 6611131, 5731694.
ITH
IPRG
GND
VFB
VIN
SW
NGATE
LTC3872
3872 TA01
RUN/SS
17.4k
VIN
11k
1%
34.8k
1%
1nF
M1
D1
10
μF
100
μF
×2
1.8nF
47pF
1
μH
VIN
3.3V
VOUT
5V
2A
Efciency and Power Loss vs Load Current
LOAD CURRENT (mA)
30
EFFICIENCY
(%)
POWER
LOSS
(W)
90
100
10
0.001
20
10
80
50
70
60
40
1
100
1000
10000
3872 TA01b
0
10
1
0.1
0.01
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3872EDDB#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Up 2.75V to 9.8V Input 8-Pin DFN EP 制造商:Linear Technology 功能描述:BOOST 2.75 - 9.8V 550KHZ 8D 制造商:Linear Technology 功能描述:BOOST, 2.75 - 9.8V, 550KHZ, 8DFN |
| LTC3872EDDB#TRMPBF | 功能描述:IC REG CTRLR BST PWM CM 8-DFN 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) |
| LTC3872EDDB#TRPBF | 功能描述:IC REG CTRLR BST PWM CM 8-DFN 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) |
| LTC3872ETS8#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Up 2.75V to 9.8V Input 8-Pin TSOT-23 制造商:Linear Technology 功能描述:BOOST 9.8VIN 550KHZ 60V 8TSOT23 制造商:Linear Technology 功能描述:BOOST, 9.8VIN, 550KHZ, 60V, 8TSOT23 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, BOOST, 550KHZ, TSOT-23-8; Primary Input Voltage:9.8V; No. of Outputs:1; Output Current:10A; No. of Pins:8; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:8-TSOT-23 ;RoHS Compliant: Yes 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, BOOST, 550KHZ, TSOT-23-8; Primary Input Voltage:9.8V; No. of Outputs:1; No. of Pins:8; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:8-TSOT-23 ;RoHS Compliant: Yes |
| LTC3872ETS8#TRMPBF | 功能描述:IC REG CTRLR BST PWM CM TSOT23-8 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 |
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