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參數(shù)資料
| 型號： | LTC3642IMS8E-3.3E#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.13 A SWITCHING REGULATOR, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 306K |
| 代理商： | LTC3642IMS8E-3.3E#PBF |
LTC3642
1
3642fa
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
High Efciency, High Voltage
50mA Synchronous
Step-Down Converter
The LTC
3642 is a high efciency step-down DC/DC
converter with internal high side and synchronous power
switches that draws only 12μA typical DC supply current
at no load while maintaining output voltage regulation.
The LTC3642 can supply up to 50mA load current and
features a programmable peak current limit that provides
a simple method for optimizing efciency in lower current
applications. The LTC3642’s combination of Burst Mode
operation, integrated power switches, low quiescent cur-
rent, and programmable peak current limit provides high
efciency over a broad range of load currents.
With its wide 4.5V to 45V input range and internal
overvoltage monitor capable of protecting the part through
60V surges, the LTC3642 is a robust converter suited for
regulating a wide variety of power sources. Additionally,
the LTC3642 includes a precise run threshold and soft-start
feature to guarantee that the power system start-up is
well-controlled in any environment.
The LTC3642 is available in the thermally enhanced
3mm × 3mm DFN and MS8E packages.
Efciency and Power Loss vs Load Current
n Wide Input Voltage Range: 4.5V to 45V
n Tolerant of 60V Input Transients
n Internal High Side and Low Side Power Switches
n No Compensation Required
n 50mA Output Current
n Low Dropout Operation: 100% Duty Cycle
n Low Quiescent Current: 12μA
n 0.8V Feedback Voltage Reference
n Adjustable Peak Current Limit
n Internal and External Soft-Start
n Precise RUN Pin Threshold with Adjustable
Hysteresis
n 3.3V, 5V and Adjustable Output Versions
n Only Three External Components Required for Fixed
Output Versions
n Low Prole (0.75mm) 3mm × 3mm DFN and
Thermally-Enhanced MS8E Packages
n 4mA to 20mA Current Loops
n Industrial Control Supplies
n Distributed Power Systems
n Portable Instruments
n Battery-Operated Devices
n Automotive Power Systems
L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
5V, 50mA Step-Down Converter
VIN
LTC3642-5
RUN
HYST
3642 TA01a
SW
VIN
5V TO 45V
1μF
10μF
VOUT
5V
50mA
VOUT
SS
ISET
GND
150μH
LOAD CURRENT (mA)
0.1
85
EFFICIENCY
(%)
POWER
LOSS
(mW)
90
95
100
1
10
100
3642 TA01b
80
75
70
65
10
100
1
0.1
VIN = 10V
EFFICIENCY
POWER LOSS
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相關代理商/技術參數(shù) |
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|---|---|
| LTC3642IMS8E-5#PBF | 功能描述:IC REG BUCK SYNC 5V 50MA 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
| LTC3642IMS8E-5#TRPBF | 功能描述:IC REG BUCK SYNC 5V 50MA 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
| LTC3642IMS8EPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Down 4.5-45V MSOP8 |
| LTC3646EDE#PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 1A 14DFN 制造商:Linear Technology 功能描述:BUCK 4-40V 3MHZ 1A 2-30V 14DFN 制造商:Linear Technology 功能描述:BUCK, 4-40V, 3MHZ, 1A, 2-30V, 14DFN 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, 40V, 1A, 100uA IQ Synchronous Step-Down Converter 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, ADJ, 3MHZ, DFN-14, Primary Input Voltage:40V, No. of Outputs:1, Output Current:1A, No. of Pins:14, Operating Temperature Min:-40C, Operating Temperature Max:85C, MSL:MSL 1 - Unlimited, Package / Case:14-DFN , RoHS Compliant: Yes |
| LTC3646EDE#TRPBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 1A 14DFN 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, 40V, 1A, 100uA IQ Synchronous Step-Down Converter 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, ADJ, 3MHZ, DFN-14, Primary Input Voltage:40V, No. of Outputs:1, Output Current:1A, No. of Pins:14, Operating Temperature Min:-40C, Operating Temperature Max:85C, MSL:MSL 1 - Unlimited, Package / Case:14-DFN , RoHS Compliant: Yes |
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