Datasheet > LTC1144IN8#PBF

LTC1144IN8#PBF

更新时间： 2024-10-01 06:15:11

品牌	Logo	应用领域
凌特 - Linear		光电二极管
页数	文件大小	规格书
12页	202K
描述
LTC1144 - Switched-Capacitor Wide Input Range Voltage Converter with Shutdown; Package: PDIP; Pins: 8; Temperature Range: -40°C to 85°C

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LTC1144IN8#PBF 数据手册

LTC114 4

Switched-Capacitor

Wide Input Range

Voltage Converter

with Shutdown

FeaTures

DescripTion

The LTC^®1144 is a monolithic CMOS switched-capacitor

voltage converter. It performs supply voltage conversion

from positive to negative from an input range of 2V to

18V,resultingincomplementaryoutputvoltagesof–2Vto

–18V. Only two noncritical external capacitors are needed

for the charge pump and charge reservoir functions.

Wide Operating Supply Voltage Range: 2V to 18V

Boost Pin (Pin 1) for Higher Switching Frequency

Simple Conversion of 15V to –15V Supply

Low Output Resistance: 120Ω Maximum

Power Shutdown to 8µA with SHDN Pin

Open Circuit Voltage Conversion Efficiency:

99.9% Typical

The converter has an internal oscillator that can be

overdriven by an external clock or slowed down when

connected to a capacitor. The oscillator runs at a 10kHz

frequency when unloaded. A higher frequency outside the

audio band can also be obtained if the Boost Pin is tied to

Power Conversion Efficiency: 93% Typical

Easy to Use

applicaTions

V . The SHDN pin reduces supply current to 8µA and can

Conversion of 15V to 15V Supplies

be used to save power when the converter is not in use.

Inexpensive Negative Supplies

TheLTC1144containsaninternaloscillator,divide-by-two,

voltage level shifter, and four power MOSFETs. A special

logic circuit will prevent the power N-channel switch

substrate from turning on.

Data Acquisition Systems

High Voltage Upgrade to LTC1044 or 7660

Voltage Division and Multiplications

Automotive Applications

Battery Systems with Wall Adapter/Charger

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.

Typical applicaTion

Generating –15V from 15V

Output Voltage vs Load Current, V⁺= 15V

LTC1144

–15

= 56Ω

OUT

15V INPUT

BOOST

= 25°C

–14

–13

–12

–11

–10

CAP

OSC

10µF

GND

SHDN

–

–15V OUTPUT

CAP

OUT

10µF

1144 TA01

LOAD CURRENT (mA)

1144 TA02

1144fa

For more information www.linear.com/LTC1144

12 3 4 5 6 7...12

中文翻译

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与LTC1144IN8#PBF相关器件

型号	品牌	获取价格	描述	数据表
LTC1144IN8#TRPBF	Linear	获取价格	IC SWITCHED CAPACITOR CONVERTER, Switching Regulator or Controller
LTC1144IS8	Linear	获取价格	Switched-Capacitor Wide Input Range Voltage Converter with Shutdown
LTC1144IS8#PBF	Linear	获取价格	LTC1144 - Switched-Capacitor Wide Input Range Voltage Converter with Shutdown; Package: SO
LTC1144IS8#TR	Linear	获取价格	LTC1144 - Switched-Capacitor Wide Input Range Voltage Converter with Shutdown; Package: SO
LTC1144IS8#TRPBF	Linear	获取价格	LTC1144 - Switched-Capacitor Wide Input Range Voltage Converter with Shutdown; Package: SO
LTC1145A	Linear	获取价格	IC SPECIALTY ANALOG CIRCUIT, Analog IC:Other
LTC1146A	Linear	获取价格	IC SPECIALTY ANALOG CIRCUIT, Analog IC:Other
LTC1147	Linear	获取价格	High Efficiency Step-Down Switching Regulator Controllers
LTC1147-3.3	Linear	获取价格	High Efficiency Step-Down Switching Regulator Controllers
LTC1147-3.3_15	Linear	获取价格	High Efficiency Step-Down Switching Regulator Controllers

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