Linear Technology 1172A Manuel utilisateur

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

Autres manuels Linear Technology Carte mère

Linear Technology

Linear Technology DC1954A Guide de configuration rapide

Linear Technology

Linear Technology DC1705C Guide de configuration rapide

Linear Technology

Linear Technology DC2423A Guide de configuration rapide

Linear Technology

Linear Technology DC937A Manuel utilisateur

Linear Technology

Linear Technology DC1780A-A Guide de configuration rapide

Linear Technology

Linear Technology DC1923A Manuel utilisateur

Linear Technology

Linear Technology DC1362A-A Guide de configuration rapide

Linear Technology

Linear Technology DC1504A Guide de configuration rapide

Linear Technology

Linear Technology DC1732 Series Guide de configuration rapide

Linear Technology

Linear Technology DC1533A Guide de configuration rapide

Linear Technology

Linear Technology DC1818A Guide de configuration rapide

Linear Technology

Linear Technology LTC2634 Manuel utilisateur

Linear Technology

Linear Technology LTC3880 Guide de configuration rapide

Linear Technology

Linear Technology DC1696 Guide de configuration rapide

Linear Technology

Linear Technology DC2566A Guide de configuration rapide

Linear Technology

Linear Technology DC503A Manuel utilisateur

Linear Technology

Linear Technology DC1554 Guide de configuration rapide

Linear Technology

Linear Technology DC2491A Guide de configuration rapide

Linear Technology

Linear Technology DC1816B Guide de configuration rapide

Linear Technology

Linear Technology LT5557 Manuel utilisateur

Linear Technology

Linear Technology DC2397A Guide de configuration rapide

Linear Technology

Linear Technology DC2269A-A Guide de configuration rapide

Linear Technology

Linear Technology DC2177A-C Guide de configuration rapide

Linear Technology

Linear Technology DC1496C Guide de configuration rapide

Manuels Carte mère populaires d'autres marques

DFI

DFI SD170 Manuel utilisateur

ASROCK

ASROCK ROMED8-2T Manuel utilisateur

Asus

Asus P2L97A Manuel utilisateur

Winmate

Winmate IC70 Manuel utilisateur

Asus

Asus MES-B Manuel utilisateur

Grantech

Grantech SYS8F377VGGA-3OMN Manuel utilisateur

Telit Wireless Solutions

Telit Wireless Solutions SL869-3DR Manuel utilisateur

Gigabyte

Gigabyte GA-9IVDT Manuel utilisateur

Texas Instruments

Texas Instruments ADS8372EVM Manuel utilisateur

Commell

Commell MS-C73 Manuel utilisateur

IBT Technologies

IBT Technologies MB860 Manuel utilisateur

Nvidia

Nvidia TEGRA DG-04927-001_V01 Manuel utilisateur

Biostar

Biostar M7VIT Bravo Instructions d'utilisation et d'installation

Intel

Intel D33217CK Manuel utilisateur

Asus

Asus F1A55-M LX PLUS R2.0 Manuel utilisateur

EPC

EPC EPC9147C Manuel utilisateur

Asus

Asus EX-B760M-V5 D4 Manuel utilisateur

EPOX

EPOX MU-8KHA0010 Manuel utilisateur