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參數(shù)資料
| 型號： | LT3509IDE#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.2 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | 4 X 3 MM, LEAD FREE, PLASTIC, MO-229WGED-3, DFN-14 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 271K |
| 代理商： | LT3509IDE#PBF |
LT3509
1
3509fc
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Dual 36V, 700mA
Step-Down Regulator
The LT3509 is a dual, current mode, step-down switching
regulator, with internal power switches each capable of
providing 700mA output current. This regulator provides a
compact and robust solution for multi-rail systems in harsh
environments. It incorporates several protection features
including overvoltage lockout and cycle-by-cycle current
limit. Thermal shutdown provides additional protection.
The loop compensation components and the boost diodes
are integrated on-chip. Switching frequency is set by a
single external resistor. External synchronization is also
possible. The high maximum switching frequency allows
the use of small inductors and ceramic capacitors for low
ripple. Constant frequency operation above the AM band
avoids interference with radio reception, making the LT3509
well suited for automotive applications. Each regulator
has an independent shutdown and soft-start control pin.
When both converters are powered down, the common
circuitry enters a low current shutdown state.
3.3V and 5V Dual Output Step-Down Converter
n Two 700mA Switching Regulators with Internal
Power Switches
n Wide 3.6V to 36V Operating Range
n Overvoltage Lockout Protects Circuit Through 60V
Supply Transients
n Short-Circuit Robust
n Low Dropout Voltage: 95% Maximum Duty Cycle
n Adjustable 300kHz to 2.2MHz Switching Frequency
Synchronizable Over the Full Range
n Uses Small Inductors and Ceramic Capacitors
n Integrated Boost Diodes
n Internal Compensation
n Thermally Enhanced 14-Lead (4mm × 3mm)
DFN and 16 Lead MSOP Packages
n Automotive Electronics
n Industrial Controls
n Wall Transformer Regulation
n Networking Devices
n CPU, DSP, or FPGA Power
3509 TA01a
LT3509
GND
DA1
FB1
RUN/SS1
SYNC
DA2
FB2
RUN/SS2
RT
BD
VIN
BOOST2
BOOST1
SW2
SW1
10μH
fSW = 700kHz
0.1μF
6.5V TO 36V
(TRANSIENT TO 60V)
2.2μF
6.8μH
3.3V
700mA
5V
700mA
10μF
10.2k
31.6k
53.6k
MBRM140
1nF
22μF
10.2k
60.4k
1nF
LOAD CURRENT (A)
0.0
EFFICIENCY
(%)
70
75
80
0.7
3509 TA01b
60
65
50
55
0.1
0.2
0.6
90
85
0.5
0.4
0.3
VOUT = 3.3V
VOUT = 5V
VIN = 12V
fSW = 700kHz
Efciency
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
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PDF描述 |
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| LT3509EDE#PBF | 1.2 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO14 |
| LT3509EDE#TRPBF | 1.2 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO14 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3509IDE-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 36V, 700mA Step-Down Regulator |
| LT3509IMSE#PBF | 功能描述:IC REG BUCK ADJ 0.7A DL 16MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)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(guān):- 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(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
| LT3509IMSE#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BUCK 2.2MHZ 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, 2.2MHZ, MSOP-16 |
| LT3509IMSE#TRPBF | 功能描述:IC REG BUCK ADJ 0.7A DL 16MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT3509IMSE-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 36V, 700mA Step-Down Regulator |
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