Linear Technology LT3473EDD Manuel utilisateur

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 883

LI-ION TO 25V STEP-UP DC-DC CONVERTER

LT3473EDD

DESCRIPTION

Demonstration circuit DC883 features the LT®3473

micropower step-up DC/DC converters with inte-

grated Schottky diode and output disconnect cir-

cuitry. The output on DC883 is 25V at up to 80mA

from a 3~4.2V input, while automatic Burst Mode op-

eration maintains efficiency at light load. The lithium

ion battery input voltage range, high output voltage,

internal NPN power switch, minimal external compo-

nents and simple design make the LT3473 an excel-

lent solution for OLED and CCD Bias.

The DC883 has a jumper for enabling the output

(JP2). Placing the jumper to “OFF”, disables the DC-

DC converter and jumper to “ON”, enables the DC-DC

converter. There is a jumper (JP1) and a control pin

(CTRL) for varying the output voltage. Placing the

jumper to “VIN” provides 25V output. Placing the

jumper to “CTRL” and changing the voltage at CTRL

pin can change the output voltage. The voltage of the

PGOOD pin is approximately 0V as the output voltage

reaches 90% of final value.

Design files for this circuit board are available. Call

the LTC factory.

LT is a registered trademark of Linear Technology Corporation

Table 1.

Performance Summary ( TA= 25°

°°

°C )

PARAMETER CONDITION VALUE

Minimum Input Voltage 3V

Maximum Input Voltage 4.2V

Maximum Output Current Vin = 3 − 4.2V 80mA

Typical Switching Frequency 1.2MHz

QUICK START PROCEDURE

Demonstration circuit 883 is easy to set up to evalu-

ate the performance of the LT3473. Refer to Figure 1.

for proper measurement equipment setup and follow

the procedure below:

1. Set the input supply between 3V to 4.2V.

With power off, connect the input power sup-

ply to VIN and GND. Make sure JP2 is set to

“ON” and JP1 is set to “VIN”.

2. Turn on the power at the input.

3. The output voltage should measure about 25V

across the “VOUT” terminal to “GND” terminal

and the voltage across the PGOOD pin and

“GND” terminal should measure about 0V.

4. Test the shutdown function by placing JP2 to

“OFF”. Observe the output voltage is about

0.7V lower than the input voltage.

5. The output voltage can be controlled by DC

voltage at the CTRL terminal. With JP2 placed

at “ON” and JP1 placed at “CTRL”, observe

the output voltage change with DC voltage

applied to the CTRL terminal. The DC voltage

range recommended is 200mV ~ 1.5V. The

maximum DC voltage is 10V. Refer to the

datasheet for further details.

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 883

LI-ION TO 25V STEP-UP DC-DC CONVERTER

AVV

Load

+++

Figure 1. Proper Measurement Equipment Setup

Figure 2. Scope Probe Placement for Measuring Input or Output Ripple

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 883

LI-ION TO 25V STEP-UP DC-DC CONVERTER

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Analog Devices Inc.:

DC883A

Autres manuels Linear Technology Carte mère

Linear Technology

Linear Technology DC1496C Guide de configuration rapide

Linear Technology

Linear Technology 1635A Guide de l'administrateur

Linear Technology

Linear Technology DC1850A-A Guide de configuration rapide

Linear Technology

Linear Technology DC1386B Manuel utilisateur

Linear Technology

Linear Technology DC2548A Guide de configuration rapide

Linear Technology

Linear Technology DC1546A Guide de configuration rapide

Linear Technology

Linear Technology DC1123 Manuel utilisateur

Linear Technology

Linear Technology DC2479A-A Manuel utilisateur

Linear Technology

Linear Technology DC1498A Guide de configuration rapide

Linear Technology

Linear Technology DC1878A Guide de configuration rapide

Linear Technology

Linear Technology DC1505A Guide de configuration rapide

Linear Technology

Linear Technology DC1529A Manuel utilisateur

Linear Technology

Linear Technology DC2133A Guide de configuration rapide

Linear Technology

Linear Technology DC2017A Guide de configuration rapide

Linear Technology

Linear Technology DC1525A Guide de configuration rapide

Linear Technology

Linear Technology DC1332B Guide de configuration rapide

Linear Technology

Linear Technology DC2257A Guide de configuration rapide

Linear Technology

Linear Technology DC1668A-A Guide de configuration rapide

Linear Technology

Linear Technology DC1698A Guide de configuration rapide

Linear Technology

Linear Technology Analog Devices DC1890A Guide de configuration rapide

Linear Technology

Linear Technology DC1338A Guide de configuration rapide

Linear Technology

Linear Technology Analog Devices DC2728A Guide de configuration rapide

Linear Technology

Linear Technology DC1544 Manuel utilisateur

Linear Technology

Linear Technology DC1198A-A 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