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| 型号： | LT3471EDD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG ADJ DL 10DFN |
| 标准包装： | 121 |
| 类型： | 升压（升压），反相，回扫，Sepic |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 1 V ~ 40 V |
| 输入电压： | 2.4 V ~ 16 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 1.3A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 10-DFN（3x3） |
| 产品目录页面： | 1331 (CN2011-ZH PDF) |
LT3471
Dual 1.3A, 1.2MHz
Boost/Inverter in
3mm × 3mm DFN
FEATURES
DESCRIPTION
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1.2MHz Switching Frequency
Low V CESAT Switches: 330mV at 1.3A
High Output Voltage: Up to 40V
Wide Input Range: 2.4V to 16V
Inverting Capability
5V at 630mA from 3.3V Input
12V at 320mA from 5V Input
–12V at 200mA from 5V Input
Uses Tiny Surface Mount Components
Low Shutdown Current: < 1μA
Low Pro?le (0.75mm) 10-Lead 3mm × 3mm
The LT ? 3471 dual switching regulator combines two 42V,
1.3A switches with error ampli?ers that can sense to
ground providing boost and inverting capability. The low
V CESAT bipolar switches enable the device to deliver high
current outputs in a small footprint. The LT3471 switches
at 1.2MHz, allowing the use of tiny, low cost and low pro?le
inductors and capacitors. High inrush current at start-up
is eliminated using the programmable soft-start function,
where an external RC sets the current ramp rate. A constant
frequency current mode PWM architecture results in low,
predictable output noise that is easy to ?lter.
DFN Package
APPLICATIONS
The LT3471 switches are rated at 42V, making the device
ideal for boost converters up to ±40V as well as SEPIC
and ?yback designs. Each channel can generate 5V at
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Organic LED Power Supply
Digital Cameras
White LED Power Supply
Cellular Phones
Medical Diagnostic Equipment
Local ±5V or ±12V Supply
TFT-LCD Bias Supply
xDSL Power Supply
up to 630mA from a 3.3V supply, or 5V at 510mA from
four alkaline cells in a SEPIC design. The device can be
con?gured as two boosts, a boost and inverter or two
inverters.
The LT3471 is available in a low pro?le (0.75mm) 10-lead
3mm × 3mm DFN package.
L , LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
CONTROL 1
V IN
CONTROL 2
4.7k
0.33μF
10μF
4.7k
V IN
3.3V
OLED Driver
2.2μH
SW1
SHDN /SS1
V IN
LT3471
SHDN /SS2
FB1N
FB1P
V REF
FB2N
FB2P
90.9k
15k
0.1μF
15k
4.7μF
V OUT1
7V
350mA
95
90
85
80
75
70
65
60
OLED Driver Ef ?ciency
V OUT1 = 7V
V OUT1 = –7V
0.33μF
GND
SW2
3471 TA01
105k
75pF
55
V IN
10μH
1μF
15μH
10μF
V OUT2
–7V
250mA
50
0
100
200
I OUT (mA)
300
400
3471 TA01b
3471fb
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3472 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Boost and Inverting DC/DC Converter for CCD Bias |
| LT3472EDD | 功能描述:IC REG BOOST INV ADJ 50MA 10DFN RoHS:否 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:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
| LT3472EDD#PBF | 功能描述:IC REG BOOST INV ADJ 50MA 10DFN 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 |
| LT3472EDD#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BOOST 1.1MHZ 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BOOST, 1.1MHZ, DFN-10 |
| LT3472EDD#TR | 功能描述:IC REG BOOST INV ADJ 50MA 10DFN RoHS:否 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:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
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