LTC1515是Step-Up/Step-Down Switched Capacitor DC/DC Converters with RESET

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LTC1515 - LTC1515是Step-Up/Step-Down Switched Capacitor DC/DC Converters with RESET

LTC1515是Linear公司的一款稳压的升压型充电泵产品，LTC1515是Step-Up/Step-Down Switched Capacitor DC/DC Converters with RESET，本站介绍了LTC1515的封装应用图解、特点和优点、功能等，并给出了与LTC1515相关的凌力尔特元器件型号供参考。

LTC1515 - Step-Up/Step-Down Switched Capacitor DC/DC Converters with RESET

LTC1515 - Step-Up/Step-Down Switched Capacitor DC/DC Converters with RESET - Linear Technology（凌力尔特）

功能描述

The LTC®1515, LTC1515-3/5 and LTC1515-3.3/5 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 adjustable using an external resistor divider (LTC1515) or programmable to either 3V/5V (LTC1515-3/5) or 3.3V/5V (LTC1515-3.3/5) using a logic pin.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 power-on reset circuit forces the POR pin low on initial power-up. The POR output remains low until 200ms (typ) after VOUT is in regulation.The parts are short-circuit and overtemperature protected. Battery life is maximized by very low operating currents (ICC = 60µA typ, ICC<1µA in shutdown). All three parts are available in an SO-8 package.

特点

Adjustable/Selectable 3V, 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

Very Low Shutdown Current: < 1µA

Shutdown Disconnects Load from VIN

VOUT Programmable to 3V/5V or 3.3V/5V

Short-Circuit and Overtemperature Protected

650kHz Switching Frequency

Open-Drain Power-On Reset Output

Available in SO-8 Package

应用

SIM Interface in GSM Cellular Telephones

Smart Card Readers

Local Power Supplies

Portable Equipment

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)
LTC1515CS8	SO-8	C	$4.35	$3.50
LTC1515CS8-3.3/5	SO-8	C	$4.35	$3.50
LTC1515CS8-3.3/5#PBF	SO-8	C	$4.35	$3.50
LTC1515CS8-3.3/5#TR	SO-8	C		$3.56
LTC1515CS8-3.3/5#TRPBF	SO-8	C		$3.56
LTC1515CS8-3/5	SO-8	C	$4.35	$3.50
LTC1515CS8-3/5#PBF	SO-8	C	$4.35	$3.50
LTC1515CS8-3/5#TR	SO-8	C		$3.56
LTC1515CS8-3/5#TRPBF	SO-8	C		$3.56
LTC1515CS8#PBF	SO-8	C	$4.35	$3.50
LTC1515CS8#TR	SO-8	C		$3.56
LTC1515CS8#TRPBF	SO-8	C		$3.56
LTC1515IS8	SO-8	I	$5.25	$4.20
LTC1515IS8-3.3/5	SO-8	I	$5.25	$4.20
LTC1515IS8-3.3/5#PBF	SO-8	I	$5.25	$4.20
LTC1515IS8-3.3/5#TR	SO-8	I		$4.26
LTC1515IS8-3.3/5#TRPBF	SO-8	I		$4.26
LTC1515IS8-3/5	SO-8	I	$5.25	$4.20
LTC1515IS8-3/5#PBF	SO-8	I	$5.25	$4.20
LTC1515IS8-3/5#TR	SO-8	I		$4.26
LTC1515IS8-3/5#TRPBF	SO-8	I		$4.26
LTC1515IS8#PBF	SO-8	I	$5.25	$4.20
LTC1515IS8#TR	SO-8	I		$4.26
LTC1515IS8#TRPBF	SO-8	I		$4.26