參數(shù)資料
型號(hào)： LT1871EMS-7
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10
封裝： PLASTIC, MSOP-10
文件頁(yè)數(shù)： 1/32頁(yè)
文件大?。?/td> 461K
代理商： LT1871EMS-7
LTC1871-7
1
18717fc
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
High Input Voltage,
Current Mode Boost,
Flyback and SEPIC Controller
The LTC1871-7 is a current mode, boost, yback and
SEPIC controller optimized for driving 6V-rated MOSFETs
in high voltage applications. The LTC1871-7 works equally
well in low or high power applications and requires few
components to provide a complete power supply solution.
The switching frequency can be set with an external resistor
over a 50kHz to 1MHz range, and can be synchronized to
an external clock using the MODE/SYNC pin. Burst Mode
operation at light loads, a low minimum operating supply
voltage of 6V and a low shutdown quiescent current of
10μA make the LTC1871-7 well suited for battery-operated
systems. For applications requiring constant frequency
operation, Burst Mode operation can be defeated using
the MODE/SYNC pin. The LTC1871-7 is available in the
10-lead MSOP package.
Figure 1. Small, Nonisolated 12V Flyback Telecom Housekeeping Supply
n Optimized for High Input Voltage Applications
n Wide Chip Supply Voltage Range: 6V to 36V
n Internal 7V Low Dropout Voltage Regulator
Optimized for 6V-Rated MOSFETs
n Current Mode Control Provides Excellent
Transient Response
n High Maximum Duty Cycle (92% Typ)
n ±2% RUN Pin Threshold with 100mV Hysteresis
n ±1% Internal Voltage Reference
n Micropower Shutdown: IQ = 10μA
n Programmable Operating Frequency
(50kHz to 1MHz) with One External Resistor
n Synchronizable to an External Clock Up to 1.3 × fOSC
n User-Controlled Pulse Skip or Burst Mode Operation
n Output Overvoltage Protection
n Can be Used in a No RSENSE Mode for VDS < 36V
n Small 10-Lead MSOP Package
n Telecom Power Supplies
n 42V Automotive Systems
n 24V Industrial Controls
n IP Phone Power Supplies
L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.
No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
PARAMETER
LTC1871-7
LTC1871
INTVCC
7.0V
5.2V
INTVCC UV+
5.6V
2.1V
INTVCC UV–
4.6V
1.9V
RUN
ITH
FB
FREQ
MODE/SYNC
SENSE
VIN
INTVCC
GATE
GND
LTC1871-7
120k
4.7μF
X5R
2.2μF
100V
X7R
M1
FDC2512
0.12Ω
VIN
36V TO 72V
3.4k
2.2nF
26.7k
D3
10BQ060
47μF
16V
X5R
VOUT
12V
0.4A
604k
12.4k
T1
VP1-0076
100k
10Ω
Q1
FMMT625
D2
4148
D1
9.1V
110k
0.1μF
X5R
3:1
18717 F01
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1871EMS-7-PBF 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:High Input Voltage,Current Mode Boost, Flyback and SEPIC Controller
LT1871EMS-7-TR 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:High Input Voltage,Current Mode Boost, Flyback and SEPIC Controller
LT1871EMS-7-TRPBF 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:High Input Voltage,Current Mode Boost, Flyback and SEPIC Controller
LT1871IMS-7 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:High Input Voltage,Current Mode Boost, Flyback and SEPIC Controller
LT1871IMS-7-PBF 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:High Input Voltage,Current Mode Boost, Flyback and SEPIC Controller
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