Datasheet > MAX38650AANT+

MAX38650AANT+

更新时间： 2022-06-24 15:44:43

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
13页	936K
描述
Tiny 1.8V to 5.5V Input, 390nA IQ, 100mA nanoPower Buck Converter with 100% Duty Cycle Operation

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MAX38650

Tiny 1.8V to 5.5V Input, 390nA IQ,

100mA nanoPower Buck Converter

with 100% Duty Cycle Operation

General Description

Benefits and Features

The MAX38650 is a nanoPower, ultra-low 390nA

quiescent current, buck (step-down) DC-DC converter

operating from 1.8V to 5.5V input voltage and supporting

load currents of up to 100mA with peak efficiencies of

95%. While in shutdown, there is only 5nA of shutdown

current. The device offers ultra-low quiescent current,

small total solution size, and high efficiency throughout

the load range. The device is ideal for battery

applications where long battery life is a must. The

MAX38650 supports 100% duty cycle operation allowing

seamless transition as battery discharges and falls

below the target output voltage. The MAX38650 utilizes

a unique control scheme that allows ultra-low quiescent

current and high efficiency over a wide output current

range. The device is offered in a space-saving, 1.58mm

x 0.89mm, 6-pin wafer-level package (WLP) (2 x 3

bumps, 0.4mm pitch). The part is specified over the

-40°C to +125°C operating temperature range.

•

Extends Battery Life

• 390nA Ultra-Low Quiescent Supply Current

• 5nA Shutdown Current

• 95% Peak Efficiency and over 85% at 10µA

•

Easy to Use—Addresses Popular Operation

• 1.8V to 5.5V Input Range

• Single Resistor-Adjustable V_OUTfrom 1.2V to

3.3V (MAX38650A)

• Preprogrammed V_OUTfrom 1.2V to 5V

(MAX38650B) in steps of 50mV

• 100% Duty Cycle Mode for Low Dropout

Operation

• ±1.5% Output Voltage Accuracy

• 100mA Load Current

•

Protects System in Multiple Use Cases

• Reverse-Current Blocking in Shutdown

• Active Discharge Feature

Reduces Size and Increases Reliability

• -40°C to +125°C Operating Temperature Range

• 1.58mm x 0.89mm, 0.4mm Pitch, 6-Pin (2 x 3)

WLP

Applications

•

Portable Space-Constrained Consumer Products

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

and Bluetooth Low Energy (BLE)

Ordering Information appears at end of data sheet.

•

Single Li-Ion and Coin Cell Battery Products

Wired, Wireless, Industrial Products

Low-Voltage Industrial Applications

Typical Operating Circuit

2.2µH

INPUT 1.8V TO 5.5V

OUTPUT 1.2V TO 3.3V

OUT

22µF

10µF

MAX38650A

HIGH (ON)

RSEL

LOW (OFF)

GND

SEL

19-100931; Rev 0; 1/21

12 3 4 5 6 7...13

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