Linear DC938 Manual de usuario

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 938

MICROPOWER SYNCHRONOUS BUCK-BOOST DC/DC CONVERTER

1

LTC3530

DESCRIPTION

Demonstration circuit 938 is a micropower synchro-

nous buck-boost converter based on the LTC3530

monolithic buck-boost regulator. The DC938 has an

input voltage range of 1.8 V to 5.5V and an output of

3.3V @ 500mA. The converter can work under man-

ual or programmable automatic burst mode, provid-

ing high conversion efficiency over a wide range of

load currents. The LTC3530 comes in a 10 lead 3×3

DFN package. These features make the DC938 demo

board an ideal circuit for use in Li-Ion and dual cell

AA (Alkaline/NiCad/NiMH) battery-powered, hand-

held applications.

Design files for this circuit board are available. Call

the LTC factory.

LTC is a trademark of Linear Technology Corporation

QUICK START PROCEDURE

Refer to Figure 1 for proper measurement equipment

setup and follow the procedure below:

1.

Start with Load set to 0A.

2.

Set Power Supply to ~ 3Vin

3.

The Load can be set from 0 – 500mA.

4.

Vin can be adjusted between 1.8V and 5.5V (note

however, max output current is lower than 500mA

at Vin below 2.2V).

Figure 1. Proper Measurement Equipment Setup

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 938

MICROPOWER SYNCHRONOUS BUCK-BOOST DC/DC CONVERTER

2

Mouser Electronics

Authorized Distributor

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

Analog Devices Inc.:

DC938A

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