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參數(shù)資料
| 型號： | LTC3632EMS8E#PBF |
| 廠商： | LINEAR INTEGRATED SYSTEMS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.06 A SWITCHING REGULATOR, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 247K |
| 代理商： | LTC3632EMS8E#PBF |
LTC3632
1
3632f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
High Efciency, High Voltage
20mA Synchronous
Step-Down Converter
The LTC
3632 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 LTC3632 can supply up to 20mA load current and
features a programmable peak current limit that provides
a simple method for optimizing efciency in lower current
applications. The LTC3632’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 50V input range and internal
overvoltage monitor capable of protecting the part through
60V surges, the LTC3632 is a robust converter suited for
regulating a wide variety of power sources. Additionally,
the LTC3632 includes a precise run threshold and soft-start
feature to guarantee that the power system start-up is
well-controlled in any environment.
The LTC3632 is available in the thermally enhanced
3mm
× 3mm DFN and MS8E packages.
Efciency and Power Loss vs Load Current
n Wide Input Voltage Range: Operation from
4.5V to 50V
n Overvoltage Lockout Provides Protection Up to 60V
n Internal High Side and Low Side Power Switches
n No Compensation Required
n 20mA Output Current
n Low Dropout Operation: 100% Duty Cycle
n Low Quiescent Current: 12μA
n Wide Output Voltage Range: 0.8V to VIN
n 0.8V ±1% Feedback Voltage Reference
n Adjustable Peak Current Limit
n Internal and External Soft-Start
n Precise RUN Pin Threshold with Adjustable
Hysteresis
n Few External Components Required
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, 20mA Step-Down Converter
VIN
LTC3632
RUN
HYST
3632 TA01a
SW
VIN
5V TO 50V
1μF
10μF
1.47M
280k
VOUT
5V
20mA
VFB
SS
ISET
GND
1mH
LOAD CURRENT (mA)
0.1
70
EFFICIENCY
(%)
POWER
LOSS
(mW)
80
90
100
110
3632 TA01b
60
50
40
30
20
10
100
1000
1
EFFICIENCY
POWER LOSS
VIN = 10V
VIN = 48V
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