LTC1516 Micropower, Regulated 5V Charge Pump DC/DC Converter
The LTC®1516 is a micropower charge pump DC/DC converter that produces a regulated 5V output from a 2V to 5V supply. Extremely low supply current (12µA typical with no load, < 1µA in shutdown) and low external parts count (two 0.22µF flying capacitors and two 10µF capacitors at V IN and V OUT ) make the LTC1516 ideally suited for small, light load battery-powered applications. Typical efficiency (V IN = 3V) exceeds 70% with load currents between 50µA and 50mA. Modulating the SHDN pin keeps the typical efficiency above 70% with load currents all the way down to 10µA. The LTC1516 operates as either a doubler or a tripler depending on V IN and output load conditions to improve overall efficiency. The part has thermal shutdown and can survive a continuous short from V OUT to GND. In shut-down the load is disconnected from V IN . The LTC1516 is available in an 8-pin SO package in both commercial and industrial temperature grades
产品特点 Features
- Ultralow Power: Typical Operating ICC = 12µA
- Short Circuit/Thermal Protection
- Regulated 5V ±4% Output
- 2V to 5V Input Range
- No Inductors
- ICC in Shutdown: <1µA
- Output Current:20mA (VIN > 2V)
- 50mA (VIN > 3V)
- Shutdown Disconnects Load from VIN
- Internal Oscillator: 600kHz
- Compact Application Circuit (0.1 in²)
- 8-Pin SO Package
参数
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应用
- 2-Cell to 5V Conversion
- Li-Ion Battery Backup Supplies
- Local 3V to 5V Conversion
- 5V Flash Memory Programmer
- Smart Card Readers
典型应用图
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LTC1516 订购信息和价格参考Package Variations and Pricing
| 器件型号 |
封装 |
引脚 |
温度 |
价格 (以 1 ~ 99 片为批量) |
价格 (以 1000 片为批量) * |
| LTC1516CS8 |
SO |
8 |
C |
$4.15 |
$3.35 |
| LTC1516CS8#PBF |
SO |
8 |
C |
$4.15 |
$3.35 |
| LTC1516CS8#TR |
SO |
8 |
C |
|
$3.41 |
| LTC1516CS8#TRPBF |
SO |
8 |
C |
|
$3.41 |
| LTC1516IS8 |
SO |
8 |
I |
$4.60 |
$3.70 |
| LTC1516IS8#PBF |
SO |
8 |
I |
$4.60 |
$3.70 |
| LTC1516IS8#TR |
SO |
8 |
I |
|
$3.76 |
| LTC1516IS8#TRPBF |
SO |
8 |
I |
|
$3.76 |
LTC1516 数据手册及相关资料下载
- 数据手册(英文) : LTC1516 - Micropower, Regulated 5V Charge Pump DC/DC Converter.PDF
- 应用指南 (英文) : AN84 - linear Technology Magazine Circuit Collection, Volume IV .PDF
- 设计要点 (英文) : DN142 - Ultralow Quiescent Current DC/DC Converters for Light Load Applications.PDF
- 可靠性数据 : R302 Reliability Data .PDF
