Datasheet > MAX38643

MAX38643

更新时间： 2023-12-20 18:44:49

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
18页	994K
描述
微小尺寸、1.8V–5.5V输入、330nA IQ、700mA nanoPower降压型转换器

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MAX38640–MAX38643

Tiny 1.8V to 5.5V Input, 330nA I , 700mA

nanoPower Buck Converter

General Description

Benefits and Features

The MAX38640–MAX38643 are a nanoPower family of

ultra-low 330nA quiescent current buck (step-down) DC-

DC converters that operate from 1.8V to 5.5V input volt-

age and support load currents of up to 175mA, 350mA,

700mA with peak efficiencies of 96%. While in shutdown,

there is only 5nA of shutdown current. The devices offer

ultra-low quiescent current, small total solution size, and

high efficiency throughout the load range. The

MAX38640–MAX38643 are ideal for battery applications

where long battery life is a must.

● Extends Battery Life

• 330nA Ultra-Low Quiescent Supply Current

• 5nA Shutdown Current

• 96% Peak Efficiency and over 88% at 10µA

● Easy to Use – Addresses Popular Operation

• 1.8V to 5.5V Input Range

• Single Resistor-Adjustable V

(A-Option)

• Preprogrammed V

from 0.7V to 3.3V

OUT

from 0.5V to 5.0V (B-Option)

OUT

• ±1.75% Output Voltage Accuracy

The MAX38640–MAX38643 family utilizes a unique con-

trol scheme that allows ultra-low quiescent current and

high efficiency over a wide output current range. The

MAX38642 excludes active discharge resistor in shut-

down, which allows the output to be regulated or held high

by another source or by the charged output capacitor.

• Up to 175mA/350mA/700mA Load Current

● Protects System in Multiple Use Cases

• Reverse-Current Blocking in Shutdown

• Optional Active Discharge Feature

● Reduces Size and Increases Reliability

• -40°C to +85°C Temperature Range

The MAX38640–MAX38643 devices are offered in a

space-saving 1.42mm x 0.89mm, 6-pin WLP (2x3 bump,

0.4mm pitch), as well as a 2mm x 2mm, 6-pin µDFN pack-

age. All parts are specified over the -40°C to +85°C ex-

tended temperature range.

• 2mm x 2mm, 6-pin µDFN Package

• 1.42mm x 0.89mm, 0.4mm Pitch 6-pin (2 x 3) WLP

Typical Operating Circuit

Applications

2.2µH

● Portable, Space-Constrained Consumer Products

INPUT

1.8V TO 5.5V

OUTPUT

1.8V

● Wearable Devices, Ultra-Low-Power IoT, NB IoT, and

Bluetooth LE

OUT

● Single Li-ion (Li+) and Coin Cell Battery Products

● Wired or Wireless Industrial Products

22µF

10µF

OUT

MAX38640A

SEL

GND

768kΩ

Bluetooth is a registered trademark of Bluetooth SIG, Inc.

19-100410; Rev 10; 1/23

Ordering Information appears at end of data sheet.

12 3 4 5 6 7...18

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与MAX38643相关器件

型号	品牌	描述	获取价格	数据表
MAX38647B	ADI	1.8V至5.5V输入、440nA IQ、175mA小型nanoPower降压转换器，具有	获取价格
MAX3864E/D	MAXIM	2.5Gbps, +3V to +5.5V, Wide Dynamic Range Transimpedance Preamplifier	获取价格
MAX3864ESA	MAXIM	2.5Gbps, +3V to +5.5V, Wide Dynamic Range Transimpedance Preamplifier	获取价格
MAX3864ESA-T	MAXIM	Support Circuit, 1-Func, Bipolar, PDSO8, 0.150 INCH, MS-012AA, SOIC-8	获取价格
MAX3864EVKIT	MAXIM	Evaluation Kit for the MAX3864	获取价格
MAX3865	MAXIM	2.5Gbps Laser Driver with Automatic Modulation Control	获取价格

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