Datasheet > MAX77837

MAX77837

更新时间： 2024-11-05 14:57:47

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
22页	1158K
描述
5.5V Input, 0.4A/1.05A Switching Current Buck-Boost Converter with 400nA IQ

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MAX77837 数据手册

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5.5V Input, 0.4A/1.05A Switching Current

MAX77837

Buck-Boost Converter with 400nA IQ

Benefits and Features

General Description

•

1.8V to 5.5V Input Voltage

Output Voltages Combination from 1.8V to 5.2V

The MAX77837 is the industry's smallest nanoPower

buck-boost converter optimized for single-cell battery

chemistries that are used in wearable and Internet of

Things (IoT) applications.

Peak Efficiency of 95% (5.5V , 3.8V

)

OUT

430nA Typical Quiescent current

10nA Shutdown Current

The converter operates on an input supply between 1.8V

to 5.5V. Output voltages between 1.8V to 5.2V are set

through resistors connected to two hardware control pins.

The IC can operate in Continuous Conduction Mode

(CCM), Skip Mode, and a Low-Power Mode to ensure high

efficiency over a wide load current range. In addition, the

IC features an ultra-low quiescent current of 430nA

(typical) and a shutdown current of 10nA (typical), making

it ideal for battery-powered applications requiring a long

standby time.

SEL

Configurations

• OUT1 and OUT2

• 1.05A or 0.4A Switch Current Limit

• DVS Function On or Off

• Hiccup or Latch-Off Mode

•

Protections Features

• Input Undervoltage Lockout (UVLO)

• Overcurrent protection (OCP)

• Thermal Shutdown

The MAX77837 offers two unique hardware control pins,

•

1.84mm x 1.03mm, 8-Bump WLP

2.5mm x 2.0mm, 8-Lead FC2QFN

SEL1 and SEL2. The resistor connected at SEL1 (R

)

SEL1

selects a predefined combination of two output voltages

between 1.8V to 5.2V, OUT1 and OUT2. The resistor

connected at SEL2 (R

) allows two different

SEL2

Applications

configurations of switch current limit at 1050mA and

400mA to optimize external component size, enable or

disable Dynamic Voltage Scaling (DVS) function, and

select either hiccup or latch-off mode during a hard short

•

LPWAN SoC Companion Power Solution

IoT and Wearable Applications

Asset Trackers

event. R

can also configure the startup voltage as

Smart Meters

SEL2

OUT1 or OUT2, and the DVS function can change the

output voltage from a lower V to a higher V as

OUT

required without powering down the part.

OUT

Ordering Information appears at end of the data sheet

The MAX77837 is available in both a 1.84mm x 1.03mm,

8-bump wafer-level package (WLP) with a bump pitch of

0.4mm and a 2.5mm x 2.0mm, 8-lead Flip Chip QFN

package (FC2QFN).

Simplified Application Circuit

2.2µH

RSEL1

0402

RSEL2

0402

LX1

LX2

OUT

1.8V TO 5.5V

DC SOURCE

OUT

1.8V TO 5.2V

OUT

10V, X7R

0603, 10µF

0805, 22µF

MAX77837

ENABLE

SEL1

2.0mm x 1.5mm

DVS

SEL1

SEL2

PGND

6.2mm

19-101627; Rev 0; 2/23

12 3 4 5 6 7...22

中文翻译

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与MAX77837相关器件

型号	品牌	获取价格	描述	数据表
MAX77839	ADI	获取价格	5.5V输入、4.4A/3.6A开关电流、6μA IQ降压-升压转换器
MAX77840	ADI	获取价格	3A降压充电器，具备ModelGauge m5电池电量计和USB BC1.2检测
MAX77847	ADI	获取价格	5.5V 输入、4.5A 开关电流高效升降压转换器
MAX77857	ADI	获取价格	2.5V至16V输入、7A开关电流高效降压-升压转换器
MAX77859	ADI	获取价格	2.5V to 22V Input, 7.8A Switching Current High-Efficiency Buck-Boost Converter for USB-PD/
MAX77860	ADI	获取价格	USB Type-C、3A、开关模式Buck充电器，具有集成CC检测、反向升压和ADC
MAX77860EWG+	MAXIM	获取价格	Power Supply Management Circuit,
MAX77860EWG+T	MAXIM	获取价格	Power Supply Management Circuit,
MAX77863	MAXIM	获取价格	Complete System PMIC, Featuring 13 Regulators, 8 GPIOs, RTC, and Flexible Power Sequencing
MAX77863	ADI	获取价格	完备的系统PMIC，具有13个调节器、8路GPIO、RTCD和灵活电源排序，适用于多核心应

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