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参数资料
| 型号： | LT3509EDE#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.2 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | 4 X 3 MM, LEAD FREE, PLASTIC, MO-229WGED-3, DFN-14 |
| 文件页数： | 1/24页 |
| 文件大小： | 271K |
| 代理商： | LT3509EDE#TRPBF |
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.
相关PDF资料 |
PDF描述 |
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| LT3570EFE#TRPBF | 3.1 A SWITCHING REGULATOR, 2750 kHz SWITCHING FREQ-MAX, PDSO20 |
| LT3570IUF#PBF | 3.1 A SWITCHING REGULATOR, 2750 kHz SWITCHING FREQ-MAX, PQCC24 |
| LT3570EFE#PBF | 3.1 A SWITCHING REGULATOR, 2750 kHz SWITCHING FREQ-MAX, PDSO20 |
| LT3570IUF#TRPBF | 3.1 A SWITCHING REGULATOR, 2750 kHz SWITCHING FREQ-MAX, PQCC24 |
| LT3570EUF#TRPBF | 3.1 A SWITCHING REGULATOR, 2750 kHz SWITCHING FREQ-MAX, PQCC24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3509EMSE#PBF | 功能描述:IC REG BUCK ADJ 0.7A DL 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT3509EMSE#TRPBF | 功能描述:IC REG BUCK ADJ 0.7A DL 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT3509EMSEPBF | 制造商:Linear Technology 功能描述:Conv DC-DC Dual Step-Down 3.6-36V MSOP16 |
| LT3509EMSE-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 36V, 700mA Step-Down Regulator |
| LT3509EMSE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 36V, 700mA Step-Down Regulator |
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