Elecbee -2557 BQ25570 Nano Power Boost Charger and Buck Converter for Energy Harvester Powered Applications

SKU: EB0043214

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Key Features

Product Features:

1. Ultra Low Power DC-DC Boost Charger

Cold-start Voltage: VIN ≥ 330 mV

Continuous Energy Harvesting From VIN as low as 100 mV

Input Voltage Regulation Prevents Collapsing High Impedance Input Sources

Full Operating Quiescent Current of 488 nA (typical)

Ship Mode with < 5 nA From Battery

2. Energy Storage

Energy can be Stored to Re-chargeable Li-ion Batteries, Thin-film Batteries, Super-

capacitors, or Conventional Capacitors

3. Battery Charging and Protection

Internally Set Undervoltage Level

User Programmable Overvoltage Levels

4. Battery Good Output Flag

Programmable Threshold and Hysteresis

Warn Attached Microcontrollers of Pending Loss of Power

Can be Used to Enable or Disable System Loads

5. Programmable Step Down Regulated Output (Buck)

High Efficiency up to 93%

Supports Peak Output Current up to 110 mA (typical)

6. Programmable Maximum Power Point Tracking (MPPT)

Provides Optimal Energy Extraction From a Variety of Energy Harvesters including Solar Panels, Thermal and Piezo Electric Generators

Applications:

Energy Harvesting

Solar Chargers

Thermal Electric Generator (TEG) Harvesting

Wireless Sensor Networks (WSN)

Low Power Wireless Monitoring

Environmental Monitoring

Bridge and Structural Health Monitoring (SHM)

Smart Building Controls

Portable and Wearable Health Devices

Entertainment System Remote Controls

Datasheet

EB0043214

Specifications

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Attribute

Value

Wireless Capability

Bluetooth

Model

BQ25570

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Description

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Description:

The bq25570 device is specifically designed to efficiently extract microwatts (µW) to milliwatts (mW) of power generated from a variety of high output impedance DC sources like photovoltaic (solar) or thermal electric generators (TEG) without collapsing those sources. The battery management features ensure that a rechargeable battery is not overcharged by this extracted power, with voltage boosted, or depleted beyond safe limits by a system load. In addition to the highly efficient boosting charger, the bq25570 integrates a highly efficient, nano- power Loads buck converter for providing a second power rail to systems such as wireless sensor networks (WSN) which have stringent power and operational demands. All the capabilities of bq25570 are packed into a small foot-print 20-lead 3.5-mm x 3.5-mm QFN package (RGR).

Package included:

1 x CJMCU-2557 BQ25570 Nano Power Boost Charger

CJMCU-2557-BQ25570-Nano-Power-Boost-Charger-and-Buck-Converter-for-Energy-Harvester-Powered-Applicat-1295684

Shopping Guide

Shipping	Delivery Period	For in-stock parts, orders are estimated to ship out in 3 days. Elecbee ships orders once a day at about 5pm except Sunday. Once shipped, estimated delivery time depends on the below carriers you chose. DHL Express: 3-7 business days DHLeCommerce: 12-22 business days FedEx International Priority: 3-7 business days EMS: 10-15 business days Registered Air Mail: 15-30 business days
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Returning/Warranty	Returning	Returns are normally accepted when completed within 30 days from date of shipment, please contact customer service for a return authorization. Parts should be unused and in original packaging. Customer has to take charge for the shipping
	Warranty	All Elecbee purchases come with a 30-day money-back return policy, plus 1-year Elecbee warranty against any manufacturing defects.
		This warranty shall not apply to any item where defects have been caused by improper customer assembly failure by customer to follow instructions, product modification, negligent or improper operation
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