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LTC1515

Features: `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: 60mA`Very Low Current: < 1A`Shutdown Disconnects Load from V IN`VOUT...

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SeekIC No. : 004401646 Detail

LTC1515: Features: `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 Tu...

LTC1515 Data Sheet

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Part Number:
LTC1515
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

`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: 60mA
`Very Low Current: < 1A
`Shutdown Disconnects Load from V IN
`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


Application

·SIM Interface in GSM Cellular Telephones
·Smart Card Readers
·Local Power Supplies
·Portable Equipment


Pinout

Connection Diagram


Specifications

VIN to GND ................................................ 0.3V to 12V
VOUT to GND ............................................. 0.3V to 12V
SHDN, 5/3, FB to GND .............................. 0.3V to 12V
VOUT Short-Circuit Duration ............................ Indefinite
Operating Temperature Range
Commercial ............................................. 0°C to 70°C
Industrial ............................................ 40°C to 85°C
Storage Temperature Range ........... 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C


Description

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 of LTC1515 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 = 60mA typ, ICC < 1A in shutdown). All three parts are available in an SO-8 package




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