LTC1522是Micropower, Regulated 5V Charge Pump DC/DC Converter

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LTC1522 - LTC1522是Micropower, Regulated 5V Charge Pump DC/DC Converter

LTC1522是Linear公司的一款稳压的升压型充电泵产品，LTC1522是Micropower, Regulated 5V Charge Pump DC/DC Converter，本站介绍了LTC1522的封装应用图解、特点和优点、功能等，并给出了与LTC1522相关的凌力尔特元器件型号供参考。

LTC1522 - Micropower, Regulated 5V Charge Pump DC/DC Converter

LTC1522 - Micropower, Regulated 5V Charge Pump DC/DC Converter - Linear Technology（凌力尔特）

功能描述

The LTC1522 is a micropower charge pump DC/DC converter that produces a regulated 5V output from a 2.7V to 5V input supply. Extremely low supply current (6µA typical with no load, <1µA in shutdown) and low external parts count (one 0.22µF flying capacitor and two 10µF capacitors at VIN and VOUT) make the LTC1522 ideally suited for small, light load battery-powered applications. Typical efficiency (VIN = 3V) exceeds 75% with load currents between 50µA and 20mA. Modulating the SHDN pin keeps the typical efficiency above 75% with load currents all the way down to 10µA. The LTC1522 has thermal shutdown and can survive a continuous short from VOUT to GND. In shutdown the load is disconnected from VIN. The part is available in 8-pin MSOP and SO packages. The LTC1522 is pin compatible with the LTC1516 in applications where VIN >/= 2.7V and IOUT </= 20mA.

特点

Ultralow Power: Typical Operating ICC = 6µA

Short-Circuit/Thermal Protected

Regulated 5V ±4% Output Voltage

2.7V to 5V Input Range

No Inductors

Very Low ICC in Shutdown: <1µA

Output Current: 10mA (VIN >/=2.7V) 20mA (VIN >/=3V)

Shutdown Disconnects Load from VIN

Internal Oscillator: 700kHz

Compact Application Circuit (<0.1 in2)

8-Pin MSOP and SO Packages

应用

SIM Interface Supplies for GSM Cellular Telephones

Li-Ion Battery Backup Supplies

Local 3V to 5V Conversion

Smart Card Readers

PCMCIA Local 5V Supplies

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC1522CMS8	MS-8	C	$2.50	$1.95
LTC1522CMS8#PBF	MS-8	C	$2.50	$1.95
LTC1522CMS8#TR	MS-8	C		$2.01
LTC1522CMS8#TRPBF	MS-8	C		$2.01
LTC1522CS8	SO-8	C	$2.15	$1.75
LTC1522CS8#PBF	SO-8	C	$2.15	$1.75
LTC1522CS8#TR	SO-8	C		$1.81
LTC1522CS8#TRPBF	SO-8	C		$1.81
LTC1522IS8	SO-8	I	$2.30	$2.00
LTC1522IS8#PBF	SO-8	I	$2.30	$2.00
LTC1522IS8#TR	SO-8	I		$2.06
LTC1522IS8#TRPBF	SO-8	I		$2.06