参数资料
型号: LT3483IS6#TRPBF
厂商: Linear Technology
文件页数: 1/12页
文件大小: 0K
描述: IC REG INV ADJ 0.2A TSOT23-6
标准包装: 2,500
类型: 反相
输出类型: 可调式
输出数: 1
输出电压: 可调至 -38V
输入电压: 2.5 V ~ 16 V
电流 - 输出: 200mA
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SOT-23-6 细型,TSOT-23-6
包装: 带卷 (TR)
供应商设备封装: TSOT-23-6

LT3483/LT3483A
Internal 40V Schottky Diode
One Resistor Feedback (Other Resistor Inside)
Internal 40V, 200mA/400mA Power Switch
Generates Regulated Negative Outputs to –38V
Low Quiescent Current:
Low V CESAT Switch: 200mV at 150mA
Wide Input Range: 2.5V to 16V
Uses Small Surface Mount Components
Output Short-Circuit Protected
Available in a 6-Lead SOT-23 (LT3483 Only) and
FEATURES
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40μA in Active Mode
<1μA in Shutdown Mode
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Low Profile 8-Lead DFN (2mm × 2mm × 0.75mm)
Packages
APPLICATIONS
Inverting Micropower
DC/DC Converters
with Schottky
DESCRIPTION
The LT ? 3483/LT3483A are micropower inverting DC/DC
converters with integrated Schottky and one resistor
feedback. The small package size, high level of integration
and use of tiny surface mount components yield a solution
size as small as 40mm 2 . The devices feature a quiescent
current of only 40μA at no load, which further reduces
to 0.1μA in shutdown. A current limited, fixed off-time
control scheme conserves operating current, resulting
in high efficiency over a broad range of load current. A
precisely trimmed 10μA feedback current enables one
resistor feedback and virtually eliminates feedback load-
ing of the output. The 40V switch enables voltage outputs
up to –38V to be generated without the use of costly
transformers. The LT3483/LT3483A’s low 300ns off-time
permits the use of tiny low profile inductors and capaci-
tors to minimize footprint and cost in space-conscious
portable applications.
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LCD Bias
Handheld Computers
Battery Backup
Digital Cameras
OLED Bias
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners. Protected by U.S. Patents, including 7710700.
TYPICAL APPLICATION
3.6V to –8V DC/DC Converter
Efficiency and Power Loss
10μH
V IN
3.6V
4.7μF
0.22μF
SW
V IN D
LT3483
5pF
10?
806k
V OUT
–8V
25mA
75
70
65
V IN = 3.6V
EFFICIENCY
1000
100
10
SHDN
GND
FB
2.2μF
60
POWER
LOSS
1
3483 TA01a
55
0.1
1
10
0.1
100
LOAD CURRENT (mA)
3483 TA01b
3483fc
1
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