LTC1798CS8-3 Linear Technology, LTC1798CS8-3 Datasheet

LTC1798CS8-3

Manufacturer Part Number

LTC1798CS8-3

Description

IC REF LDO BANDGAP MCRPWR 8SOIC

Manufacturer

Linear Technology

Datasheet

1.LTC1798CS8-2.5.pdf (10 pages)

Specifications of LTC1798CS8-3

Reference Type

Series

Voltage - Output

Tolerance

±0.15%

Temperature Coefficient

40ppm/°C

Voltage - Input

3.2 ~ 12.6 V

Number Of Channels

Current - Quiescent

6.5µA

Current - Output

10mA

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Current - Cathode

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

LTC1798CS8-3

Manufacturer:

LINEAR/凌特

Quantity:

20 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

LTC1798CS8-3#PBF

Manufacturer:

LINEAR/凌特

Quantity:

20 000

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APPLICATIONS

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

FEATURES

200mV Max Dropout at 10mA Output Current

4µA Typical Quiescent Current

0.15% Max Initial Accuracy

No Output Capacitor Required

Output Sources 10mA, Sinks 2mA

40ppm/°C Max Drift

Voltage Options: 2.5V, 3V, 4.1V, 5V and Adjustable

Battery-Powered Systems

Handheld Instruments

Precision Power Supplies

A/D and D/A Converters

Available in the SO-8 Package

TO 12.6V

2.7V

2.5V Battery-Powered Reference

0.1µF

LTC1798-2.5

GND

OUT

1798 TA01

2.5V

DESCRIPTION

The LTC

LTC1798-5 are micropower bandgap references that

combine high accuracy and low drift with very low supply

current and small package size. The combination of ultralow

quiescent current and low dropout voltage of only 200mV

(max) makes them ideal for battery-powered equipment.

The output voltage is set by an external resistor divider

for the adjustable LTC1798.

This series of references uses curvature compensation to

obtain low temperature coefficient and trimmed thin-film

resistors to achieve high output accuracy. These references

can source up to 10mA and sink up to 2mA, making them

ideal for precision regulator applications. They are stable

without an output bypass capacitor, but are also stable

with capacitance up to 1µF . This feature is important in

critical applications where PC board space is a premium

and fast settling is demanded.

The LTC1798 series references provided power dissipation

advantages over shunt references. In addition to supply

current, shunt references must also idle the entire load

current to operate.

The LTC1798 series is available in the SO-8 package.

1798/LTC1798-2.5/LTC1798-3/LTC1798-4.1/

–1

–2

–3

–4

–40

Dropout References

LTC1798-2.5 Temperature Drift

–20

Micropower Low

TEMPERATURE (°C)

LTC1798 Series

1798 TA02

100

1798fc

Related parts for LTC1798CS8-3

LTC1798CS8-3 Summary of contents

Page 1

... Precision Power Supplies n A/D and D/A Converters n Available in the SO-8 Package n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 2.5V Battery-Powered Reference LTC1798-2 ...

Page 2

... JMAX JA SPECIFIED TEMPERATURE RANGE 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C PACKAGE STYLE SO-8 (S8) ORDER NUMBER PART MARKING LTC1798CS8-2.5 179825 LTC1798CS8-3 17983 LTC1798CS8-4.1 179841 LTC1798CS8-5 17985 LTC1798CS8 1798 1798fc ...

Page 3

ELECTRICAL CHARACTERISTICS range, otherwise specifications are SYMBOL PARAMETER V Input Voltage Range IN I Input Current IN V Output Voltage (Note 4) OUT e Output Voltage Noise (Note Output Voltage Temp Coefficient (Note 6) ...

Page 4

LTC1798 Series TYPICAL PERFORMANCE CHARACTERISTICS LTC1798-2.5* Dropout Voltage vs Output Source Current 100 T = 25° 0 OUTPUT SOURCE CURRENT (mA) 1798 G01 LTC1798-2.5* Output Short-Circuit ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS LTC1798-2.5 0.1Hz to 10Hz Noise V = 2.7V IN 5µV/DIV 1SEC/DIV 1798 G10 PIN FUNCTIONS DNC (Pins 8): Do Not Connect. Connected internally for post package trim. These pins must be left unconnected. IN ...

Page 6

LTC1798 Series BLOCK DIAGRAM APPLICATIONS INFORMATION Longer Battery Life Series references have an advantage over shunt style references. To operate, shunt references require a resistor between the power supply and the output. This resistor must be chosen to supply the ...

Page 7

APPLICATIONS INFORMATION to reduce the output ringing. Figure 2 illustrates the use of a damping resistor for capacitive loads greater than 1µF . Figure 3 shows the resistor and capacitor values required to achieve critical damping. Internal P-Channel Pass Transistor ...

Page 8

LTC1798 Series PACKAGE DESCRIPTION .050 BSC .245 MIN .030 .005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 (0.254 – 0.508) .008 – .010 (0.203 – 0.254) (0.406 – 1.270) NOTE: 1. DIMENSIONS IN (MILLIMETERS) 2. DRAWING NOT TO SCALE ...

Page 9

REVISION HISTORY (Revision history begins at Rev C) REV DATE DESCRIPTION C 9/10 Added Maximum limit for V in Electrical Characteristics section IN LTC1798 Series PAGE NUMBER 3 1798fc 9 ...

Page 10

... Max, 10ppm/°C Max, 2.5V, 60µA Supply www.linear.com ● Supply Splitter LTC1798-2.5 2. OUT VIRTUAL GROUND 0.1µF 0.1µF GND 1798 TA04 4 MPU SERIAL DATA LINK (MICROWIRE AND SPI COMPATIBLE 3.2V TO 12.6V LT 0910 REV C • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2008 1798fc ...

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