MAX1698

更新时间： 2024-09-14 21:54:15

品牌	Logo	应用领域
美信 - MAXIM		开关测试
页数	文件大小	规格书
4页	134K
描述
Fully assembled and tested circuit board that contains a boost switching-regulator current source and array of white LEDs

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MAX1698 数据手册

19-1677; Rev 0; 4/00

MAX1698 Evaluation Kit

General Description

Features

ꢀ Input Voltage Down to +0.8V

The MAX1698 evaluation kit (EV kit) is a fully assembled

and tested circuit board that contains a boost switch-

ing-regulator current source and array of white LEDs.

As configured, the circuit is set up to drive 3 banks of 3

series LED arrays at 20mA each; however, a wide vari-

ety of other configurations are possible. The IC can be

powered from a separate +2.7VDC to +5.5VDC input,

while LED power has a wider input range and can be

supplied either from a logic supply or battery source.

ꢀ 3x3 White LED Array

ꢀ Potentiometer-Adjustable Output Current Level

(LED Brightness Control)

ꢀ External Low-Loss N-Channel Switch

ꢀ 10nA IC Shutdown Current

ꢀ Operation Up to 500kHz Switching Frequency

ꢀ Surface-Mount Components

The MAX1698 features digital soft-start and adjustable

lossless LED current control. The MAX1698 EV kit

demonstrates low quiescent current, open-circuit pro-

tection, and up to 90% efficiency for maximum battery

life. Operation up to 500kHz allows the use of tiny sur-

face-mount components.

ꢀ Fully Assembled and Tested

Component List

Ordering Information

DESIGNATION QTY

DESCRIPTION

PART

TEMP. RANGE

IC PACKAGE

MAX1698EVKIT

0°C to +70°C

10 µMAX

10µF, 25V X5R ceramic cap (1812)

Taiyo Yuden TMK432BJ106KM

1µF, 25V X5R ceramic cap (1206)

Taiyo Yuden TMK316BJ105KL or

Murata GRM42-6X7R105K025A

Component Suppliers

SUPPLIER

PHONE

FAX

1µF, 6.3V X5R ceramic cap (0603)

Taiyo Yuden JMK107BJ105KA

Central

Semiconductor

516-435-1110

516-435-1824

40V, 0.5A Schottky diode (SOD-123)

Motorola MBR0540T1 or

Nihon EP05Q04

Fairchild

Motorola

Murata

408-822-2000

602-303-5454

814-956-0666

408-822-2102

602-994-6430

847-238-0490

24V, 350mW zener diode (SOT-23)

Central Semiconductor CMPZ5253B

D3–D11

Nichia America

Corporation

408-573-0933

408-573-0934

White LEDs

Nichia NSPW500BS (T-1-3/4)

Nihon USA

Sumida

661-867-2555

708-956-0666

408-573-4150

661-867-2698

708-956-0702

408-573-4159

10µH inductor

Sumida CDRH5D18-100NC

Taiyo Yuden

Note: Please indicate that you are using the MAX1698 when

contacting these component suppliers.

30V, 2.2A, N-channel MOSFET

(SuperSOT™-3)

Fairchild Semiconductor FDN337N

SuperSOT is a trademark of Fairchild Semiconductor.

500k potentiometer

Bourns 3352E-1-504

Quick Start

R2, R3, R4

1% resistors (0805)

The MAX1698 EV kit is fully assembled and tested.

Follow these steps to verify board operation. Do not

turn on the power supply until all connections are

completed.

MAX1698EUB (10-pin µMAX)

3-pin header

JU1

None

Shunt (JU1)

MAX1698 PC board

MAX1698 data sheet

MAX1698 EV kit data sheet

________________________________________________________________ Maxim Integrated Products

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

12 3 4

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与MAX1698相关器件

型号	品牌	获取价格	描述	数据表
MAX1698_07	MAXIM	获取价格	High-Efficiency Step-Up Current Regulator for LEDs
MAX16984	MAXIM	获取价格	Automotive High-Current Step-Down Converter with USB Protection/Host Charger Adapter Emula
MAX16984	ADI	获取价格	汽车应用大电流降压转换器，具有USB保护/主机充电适配器仿真功能
MAX16984A	MAXIM	获取价格	Automotive High-Current Step-Down Converter with USB Protection/Host Charger Adapter Emula
MAX16984A	ADI	获取价格	具有USB保护/主机充电器适配器仿真器的汽车级大电流降压转换器
MAX16984AATJA	MAXIM	获取价格	Automotive High-Current Step-Down Converter with USB Protection/Host Charger Adapter Emula
MAX16984AATJB	MAXIM	获取价格	Automotive High-Current Step-Down Converter with USB Protection/Host Charger Adapter Emula
MAX16984RAGI/VY+	MAXIM	获取价格	Switching Regulator, BICMOS, QFND-28
MAX16984RAGIVY	MAXIM	获取价格	Automotive High-Current Step-Down Converter with USB Protection/Host Charger Adapter Emula
MAX16984RATI/V+	MAXIM	获取价格	Switching Regulator, BICMOS, TQFN-28

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