参数资料
型号: LT3467AES6#TRMPBF
厂商: Linear Technology
文件页数: 1/18页
文件大小: 0K
描述: IC REG BOOST ADJ 1.1A TSOT23-6
标准包装: 1
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 1.26 V ~ 40 V
输入电压: 2.4 V ~ 16 V
PWM 型: 电流模式
频率 - 开关: 2.1MHz
电流 - 输出: 1.1A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SOT-23-6 细型,TSOT-23-6
包装: 标准包装
供应商设备封装: TSOT-23-6
产品目录页面: 1331 (CN2011-ZH PDF)
其它名称: LT3467AES6#TRMPBFDKR
LT3467/LT3467A
1.1A Step-Up DC/DC
Converter with
Integrated Soft-Start
FEATURES
DESCRIPTION
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1.3MHz Switching Frequency (LT3467)
2.1MHz Switching Frequency (LT3467A)
Low V CESAT Switch: 330mV at 1.1A
High Output Voltage: Up to 40V
Wide Input Range: 2.4V to 16V
Dedicated Soft-Start Pin
5V at 540mA from 3.3V Input (LT3467)
5V at 430mA from 3.3V Input (LT3467A)
12V at 270mA from 5V Input (LT3467)
12V at 260mA from 5V Input (LT3467A)
Uses Small Surface Mount Components
Low Shutdown Current: <1μA
Pin-for-Pin Compatible with the LT1930 and LT1613
Low Pro?le (1mm) ThinSOT? Package
Low Pro?le (0.75mm) 8-Lead (3mm × 2mm)
DFN Package
The LT ? 3467/LT3467A switching regulators combine a
42V, 1.1A switch with a soft-start function. Pin compatible
with the LT1930, its low V CESAT bipolar switch enables the
device to deliver high current outputs in a small footprint.
The LT3467 switches at 1.3MHz, allowing the use of tiny,
low cost and low height inductors and capacitors. The
LT3467A switches at 2.1MHz, allowing the use of even
smaller components. High inrush current at start-up is
eliminated using the programmable soft-start function.
A single external capacitor sets the current ramp rate. A
constant frequency current mode PWM architecture results
in low, predictable output noise that is easy to ?lter.
The high voltage switch on the LT3467/LT3467A is rated
at 42V, making the devices ideal for boost converters up
to 40V as well as SEPIC and ?yback designs. The LT3467
can generate 5V at up to 540mA from a 3.3V supply or
Digital Cameras
White LED Power Supplies
Cellular Phones
Medical Diagnostic Equipment
Local 5V or 12V Supplies
TFT-LCD Bias Supplies
APPLICATIONS
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5V at 450mA from four alkaline cells in a SEPIC design.
The LT3467A can generate 5V at up to 430mA from a 3.3V
supply or 15V at 135mA from a 3.3V supply. The LT3467/
LT3467A are available in a low pro?le (1mm) 6-lead SOT-23
package and tiny 3mm × 2mm DFN package.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
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xDSL Power Supplies
TYPICAL APPLICATION
Single Li-Ion Cell to 5V Boost Converter
95
90
Ef?ciency
V IN
2.6V TO
4.2V
4.7μF
OFF ON
2.7μH
V IN
SHDN
LT3467
SW
402k
3.3pF
V OUT
5V
765mA AT V IN = 4.2V,
540mA AT V IN = 3.3V,
360mA AT V IN = 2.6V
85
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75
70
V IN = 2.6V
V IN = 4.2V
V IN = 3.3V
SS
FB
65
0.047μF
GND
133k
15μF
60
55
3467 TA01a
50
100 200 300 400 500 600 700 800 900
I OUT (mA)
3467 TA01b
3467afe
1
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