LTC1515IS8-3.3/5#TRPBF Linear Technology, LTC1515IS8-3.3/5#TRPBF Datasheet

LTC1515IS8-3.3/5#TRPBF

Manufacturer Part Number

LTC1515IS8-3.3/5#TRPBF

Description

IC MULTI CONFIG 3.3V/5V 8SOIC

Manufacturer

Linear Technology

Type

Step-Down (Buck), Step-Up (Boost), Switched Capacitor (Charge Pump)r

Datasheet

1.LTC1515IS8PBF.pdf (8 pages)

Specifications of LTC1515IS8-3.3/5#TRPBF

Internal Switch(s)

Yes

Synchronous Rectifier

Number Of Outputs

Voltage - Output

3.3V, 5V

Current - Output

50mA

Frequency - Switching

650kHz

Voltage - Input

2 ~ 10 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Part Number:

LTC1515IS8-3.3/5#TRPBF

Manufacturer:

LINEAR/凌特

Quantity:

20 000

Current page: 1 of 8
Download datasheet (210Kb)

APPLICATIONS

FEATURES

TYPICAL

5V 3.3V

ON OFF

RESET

SIM Interface in GSM Cellular Telephones

Smart Card Readers

Local Power Supplies

Portable Equipment

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: 60 A

Very Low Shutdown Current: < 1 A

Shutdown Disconnects Load from V

Short-Circuit and Overtemperature Protected

650kHz Switching Frequency

Open-Drain Power-On Reset Output

Available in SO-8 Package

OUT

Programmable 3.3V/5V Power Supply with Power-On Reset

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

APPLICATION

SHDN

POR

5/3

GND

LTC1515-3.3/5

Daisy-Chained Control Outputs

100k

OUT

–

0.22 F

10 F

OUT

10 F

= 50mA

= 3.3V OR 5V

LTC1515 • TA01

Switched Capacitor DC/DC

4-CELL

NiCd

The LTC

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

inrush current and output voltage ripple when large V

An internal power-on reset circuit forces the POR pin low

on initial power-up. The POR output remains low until

200ms (typ) after V

The parts are short-circuit and overtemperature protected.

Battery life is maximized by very low operating currents

available in an SO-8 package.

DESCRIPTION

OUT

4% regulation. Additional circuitry prevents excessive

, LTC and LT are registered trademarks of Linear Technology Corporation.

= 60 A typ, I

differentials are present.

1515, LTC1515-3/5 and LTC1515-3.3/5 are

Converters with Reset

Step-Up/Step-Down

5.2

5.1

5.0

4.9

4.8

LTC1515-X 5V Output vs Input Voltage

< 1 A in shutdown). All three parts are

OUT

5/3 = 3V

OUT

= 10mA

is in regulation.

INPUT VOLTAGE (V)

LTC1515 Series

LT1515 • TA02

Related parts for LTC1515IS8-3.3/5#TRPBF

LTC1515IS8-3.3/5#TRPBF Summary of contents

Page 1

... The POR output remains low until 200ms (typ) after V The parts are short-circuit and overtemperature protected. Battery life is maximized by very low operating currents ( typ available in an SO-8 package. , LTC and LT are registered trademarks of Linear Technology Corporation 3. OUT I = 50mA OUT + ...

Page 2

... 5/3, SHDN = V IN 5/3, SHDN = 1.232V I = 100 SINK IN ORDER PART NUMBER TOP VIEW LTC1515CS8-3 OUT LTC1515CS8-3.3 LTC1515IS8-3 LTC1515IS8-3.3/5 – PART MARKING 151535 = 110 C/W 515335 JA MIN TYP MAX 2.7 10 2.0 8 2.0 10 2.88 3.0 3.12 2.88 3.0 3.12 3.17 3.3 3.43 3.17 3 ...

Page 3

ELECTRICAL CHARACTERISTICS 10V, SHDN = 3V 0. PARAMETER POR Leakage Current POR Trip Point (With Respect OUT POR Trip Point Hysteresis I Short-Circuit Current OUT t ON POR ...

Page 4

LTC1515 Series W U TYPICAL PERFORMANCE CHARACTERISTICS LTC1515-X 3V Efficiency vs Input Voltage 100 OUT I = 10mA OUT INPUT VOLTAGE (V) ...

Page 5

PIN FUNCTIONS + C1 (Pin 6): Charge Pump Flying Capacitor, Positive Terminal. V (Pin 7): Charge Pump Input Voltage. May be between IN 2V and 10V. V should be bypassed with a IN ESR capacitor as close ...

Page 6

LTC1515 Series U U APPLICATIONS INFORMATION Output Voltage Selection The LTC1515-X versions have internal resistor networks which set the output voltage. The 5/3 pin controls an internal switch that shorts out a portion of the resistor network to change the ...

Page 7

... Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 8

... SO8 0996 50mA OUT 2V 50mA (V 3V) IN OUT IN = 20mA OUT 1515f LT/TP 0298 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1997 = 5V = 20mA < 1mV P-P LTC1515 • TA03 ...

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