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LTC1261CS#PBF PDF预览

LTC1261CS#PBF

更新时间： 2023-12-18 00:00:00
品牌 Logo 应用领域
凌特 - Linear 光电二极管
页数 文件大小 规格书
18页 529K
描述
LTC1261 - Switched Capacitor Regulated Voltage Inverter; Package: SO; Pins: 14; Temperature Range: 0°C to 70°C

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中文翻译

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LTC1261CS#PBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：SOP,
针数：14Reach Compliance Code：compliant
风险等级：5.1模拟集成电路 - 其他类型：SWITCHED CAPACITOR REGULATOR
最大输入电压：8 V最小输入电压：3 V
JESD-30 代码：R-PDSO-G14JESD-609代码：e3
长度：8.65 mm湿度敏感等级：1
功能数量：1端子数量：14
最高工作温度：70 °C最低工作温度：
标称输出电压：-8 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.75 mm
最大供电电流 (Isup)：1 mA表面贴装：YES
切换器配置：DOUBLER INVERTER最大切换频率：550 kHz
技术：CMOS温度等级：COMMERCIAL
端子面层：MATTE TIN端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3.9 mm
Base Number Matches：1

LTC1261CS#PBF 数据手册

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LTC1261  
Switched Capacitor  
Regulated Voltage Inverter  
FEATURES  
DESCRIPTION  
The LTC®1261 is a switched-capacitor voltage inverter  
designed to provide a regulated negative voltage from  
a single positive supply. The LTC1261CS operates from  
a single 3V to 8V supply and provides an adjustable  
output voltage from –1.25V to –8V. An on-chip resistor  
string allows the LTC1261CS to be configured for output  
voltages of –3.5V, –4V, –4.5V or –5V with no external  
components. The LTC1261CS8 is optimized for applica-  
tions which use a 5V or higher supply or which require  
low output voltages. It requires a single external 0.1µF  
capacitorandprovidesadjustableandfixedoutputvoltage  
options in 8-lead SO packages. The LTC1261CS requires  
one or two external 0.1µF capacitors, depending on input  
voltage. Both versions require additional external input  
and output bypass capacitors. An optional compensation  
capacitor at ADJ/COMP can be used to reduce the output  
voltage ripple.  
n
Regulated Negative Voltage from a  
Single Positive Supply  
n
Can Provide Regulated –5V from a 3V Supply  
n
REG Pin Indicates Output is in Regulation  
Low Output Ripple: 5mV Typ  
Supply Current: 600µA Typ  
Shutdown Mode Drops Supply Current to 5µA  
Up to 15mA Output Current  
Adjustable or Fixed Output Voltages  
Requires Only Three or Four External Capacitors  
Available in SO-8 Packages  
n
n
n
n
n
n
n
APPLICATIONS  
n
GaAs FET Bias Generators  
n
Negative Supply Generators  
n
Battery-Powered Systems  
Single Supply Applications  
n
Each version of the LTC1261 will supply up to 12mA  
output current with guaranteed output regulation of 5%.  
The LTC1261 includes an open-drain REG output which  
pulls low when the output is within 5% of the set value.  
Output ripple is typically as low as 5mV. Quiescent current  
is typically 600µA when operating and 5µA in shutdown.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
The LTC1261 is available in a 14-lead narrow body SO  
package and an 8-lead SO package.  
TYPICAL APPLICATION  
Waveforms for –4V Generator with Power Valid  
–4V Generator with Power Valid  
5V  
1
2
3
4
8
7
6
5
0V  
OUT  
5V  
V
SHDN  
REG  
CC  
+
10k  
C1  
POWER VALID  
= –4V  
C1  
1µF  
C2  
–4V  
LTC1261-4  
0.1µF  
V
–
OUT  
C1  
OUT  
5V  
SHDN  
0V  
AT 10mA  
C4  
3.3µF  
+
GND  
COMP  
C3*  
100pF  
5V  
POWER VALID  
0V  
LTC1261 • TA01  
*OPTIONAL  
LTC1261 • TA02  
0.2ms/DIV  
1261fb  
1
For more information www.linear.com/LTC1261  
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