Linear Technology 1172A User manual

1965

DESCRIPTION

Demonstration circuit 1172A is a low dropout linear

regulator featuring LT®1965, w hich comes in 5-lead

T -220, 5-lead DD-PAK as w ell as the thermally en-

hanced 8-lead M S P and 8-lead 3mmX3mm DFN

packages. The DC1172A has an input voltage range

from 2.3 to 20V, and is capable of delivering up to

1.1A output current. perating quiescent current is

500µA

, reducing to less than

1µA

in shutdow n. The

DC1172A has a very low output noise, w hich makes it

ideal for logic pow er supplies, post regulator for

sw itching supplies and low noise instruments.

The LT1965 datasheet gives a complete description of

the part, operation and application information. The data-

sheet must be read in conjunction w ith this quick start

guide for demo circuit 1172A.

Design files for this circuit board are available. Call

the LTC factory.

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

Pow erPath are trademarks of Linear Technology Corporation.

Perform ance Sum m ary ( TA = 2 oC )

PARAM ETER FOR BUCK REGULATOR CONDITION VALUE

M inimum Input Voltage 2.3V

M aximum Input Voltage 20V

utput Voltage Vout V

=2.5V, I

=1.1A

=2.5V, I

=1.1A

=2.5V, I

=1.1A

=3.3V, I

=1.1A

=3.3V, I

=1.1A

1.2V

+/- 4%

1.5V

+/- 4%

1.8V

+/- 4%

2.5V

+/- 4%

3.3V

+/- 4%

M aximum utput Current 1.1A

Q U ICK STA RT PROCEDU RE

Demonstration circuit 1172A is easy to set up to evaluate

the performance of the LT1965. Refer to Figure 1 for

proper measurement equipment setup and follow the

procedure below :

1. Before proceeding to test, insert jumper JP1

into the FF position, and use V UT Select

jumper J1 for the desired output voltage 1.2V,

1.5V, 1.8V, 2.5V, 3.3V. If the output voltage is

different from the above values, use the USER

select option and install a resistor R5.

2. Apply input voltage across Vin to Gnd. Insert

jumper JP1 into the N position.

Check for the

proper output voltage

nce the proper output voltage is established,

adjust the load w ithin the operating range and

observe the output voltage regulation.

DEMO

C IR C U IT

1 1 7 2

Q U IC K S TAR T G U IDE

L T 1 9 6 5 E

1 .1 A L o w Dro p o u t R e g u a to r

1965

Figure 1.

Proper M easurem ent Equipm ent Setup

Figure 2.

M easuring Input or Output Ripple

1965

Other Linear Technology Motherboard manuals

Linear Technology

Linear Technology DC2042A Quick setup guide

Linear Technology

Linear Technology DC2172A Quick setup guide

Linear Technology

Linear Technology DC1734A Quick setup guide

Linear Technology

Linear Technology DC2461A User manual

Linear Technology

Linear Technology DC1333A Quick setup guide

Linear Technology

Linear Technology DC1762A Quick setup guide

Linear Technology

Linear Technology DC1684A-B Quick setup guide

Linear Technology

Linear Technology DC1498A Quick setup guide

Linear Technology

Linear Technology LTC2418 Quick setup guide

Linear Technology

Linear Technology DC1763A Quick setup guide

Linear Technology

Linear Technology DC1084A-A Quick setup guide

Linear Technology

Linear Technology DC1485A Quick setup guide

Linear Technology

Linear Technology DC776 User manual

Linear Technology

Linear Technology DC2423A Quick setup guide

Linear Technology

Linear Technology DC1705A Quick setup guide

Linear Technology

Linear Technology DC875 User manual

Linear Technology

Linear Technology DC1954A Quick setup guide

Linear Technology

Linear Technology LTC2107 Quick setup guide

Linear Technology

Linear Technology DC1783A-A Quick setup guide

Linear Technology

Linear Technology DC1362A-A Quick setup guide

Linear Technology

Linear Technology DC752A Quick setup guide

Linear Technology

Linear Technology LTC2351-14 Guide

Linear Technology

Linear Technology DC1123 User manual

Linear Technology

Linear Technology DC2347A Quick setup guide

Popular Motherboard manuals by other brands

DFI

DFI SD170 user manual

ASROCK

ASROCK ROMED8-2T user manual

Asus

Asus P2L97A user manual

Winmate

Winmate IC70 user manual

Asus

Asus MES-B user manual

Grantech

Grantech SYS8F377VGGA-3OMN user manual

Telit Wireless Solutions

Telit Wireless Solutions SL869-3DR user guide

Gigabyte

Gigabyte GA-9IVDT user manual

Texas Instruments

Texas Instruments ADS8372EVM user guide

Commell

Commell MS-C73 user manual

IBT Technologies

IBT Technologies MB860 user manual

Nvidia

Nvidia TEGRA DG-04927-001_V01 user guide

Biostar

Biostar M7VIT Bravo Description

Intel

Intel D33217CK specification

Asus

Asus F1A55-M LX PLUS R2.0 user manual

EPC

EPC EPC9147C quick start guide

Asus

Asus EX-B760M-V5 D4 quick start guide

EPOX

EPOX MU-8KHA0010 user manual