LTC1514是Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator

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LTC1514 - 典型应用图例：

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LTC1514 - LTC1514是Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator

LTC1514是Linear公司的一款稳压的升压型充电泵产品，LTC1514是Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator，本站介绍了LTC1514的封装应用图解、特点和优点、功能等，并给出了与LTC1514相关的凌力尔特元器件型号供参考。

LTC1514 - Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator

LTC1514-3.3 - Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator - Linear Technology（凌力尔特）

功能描述

The LTC1514-3.3/LTC1514-5 are micropower switched capacitor DC/DC converters that produce a regulated output voltage by either stepping up or stepping down the input voltage. Output voltage is fixed at either 3.3V (LTC1514-3.3) or 5V (LTC1514-5) by an internal resistor divider. A unique architecture allows the parts to accommodate a wide input voltage range (2V to 10V) while maintaining ±4% regulation. Additional circuitry prevents excessive inrush current and output voltage ripple when large VIN to VOUT differentials are present. An internal uncommitted comparator is kept active in shutdown. The comparator has an open-drain output for flexible interfacing. The parts are short-circuit and overtemperature protected. Battery life is maximized by very low operating currents (ICC= 60μA typ, 10μA in shutdown). Both parts are available in an SO-8 package.

特点

3.3V or 5V Output Voltages

2V to 10V Input Voltage Range

Up to 50mA Output Current

Only Three External Capacitors Required

Soft Start Limits Inrush Current at Turn-On

Low Operating Current: 60μA

Low Shutdown Current: 10μA

Shutdown Disconnects Load from VIN

Short-Circuit and Overtemperature Protected

650kHz Switching Frequency

Low-Battery Comparator Active in Shutdown

Available in SO-8 Package

应用

Battery Operated Equipment

Smart Card Readers

Local Power Supplies

Handheld Instruments

Battery Backup 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)
LTC1514CS8-3.3	SO-8	C	$4.35	$3.50
LTC1514CS8-3.3#PBF	SO-8	C	$4.35	$3.50
LTC1514CS8-3.3#TR	SO-8	C		$3.56
LTC1514CS8-3.3#TRPBF	SO-8	C		$3.56
LTC1514CS8-5	SO-8	C	$4.35	$3.50
LTC1514CS8-5#PBF	SO-8	C	$4.35	$3.50
LTC1514CS8-5#TR	SO-8	C		$3.56
LTC1514CS8-5#TRPBF	SO-8	C		$3.56
LTC1514IS8-3.3	SO-8	I	$5.25	$3.50
LTC1514IS8-3.3#PBF	SO-8	I	$5.25	$3.50
LTC1514IS8-3.3#TR	SO-8	I		$3.56
LTC1514IS8-3.3#TRPBF	SO-8	I		$3.56
LTC1514IS8-5	SO-8	I	$5.25	$3.50
LTC1514IS8-5#PBF	SO-8	I	$5.25	$3.50
LTC1514IS8-5#TR	SO-8	I		$3.56
LTC1514IS8-5#TRPBF	SO-8	I		$3.56