BQ25570RGRT

Adjustable 1.3V~5.3V VQFN-20-EP(3.5x3.5) Power Management - Specialized RoHS

VQFN-20-EP(3.5x3.5)ROHS3 CompliantActive

Micropower boost chargers and buck converters for energy harvester-powered applications

Manufacturer: TI
Manufacturer part #: BQ25570RGRT
Store part #: C181625
Package / case: VQFN-20-EP(3.5x3.5)
Category: Power Management - Specialized
Packaging: Tape & Reel (TR)

Datasheet (PDF)

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24 in stock

#C181625

Stock & price checked 5 days ago

Quantity	Unit price	Pack price
1+	₹707.02	₹707.02
10+	₹605.06	₹6,050.60
30+	₹544.40	₹16,332.00
250+	₹483.09	₹1,20,772.50
500+	₹455.05	₹2,27,525.00
1,000+	₹442.21	₹4,42,210.00

Quantity (min 1)

1 × ₹707.02

₹707.02

excl. GST

₹834.28 incl. 18% GST

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Standard pack: 250 per reel

BQ25570RGRT

₹707.02 for 1 + GST

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Specifications

Features: Cycle-by-cycle current limiting;Adjustable current limiting;Operating status indication
Function: Boost;Step-down type
Frequency - Switching: 1MHz;500kHz
Operating Temperature: -40℃~+85℃@(TA)
Number of Outputs: 1
Output Type: Adjustable
Topology: Boost;Buck
Quiescent Current: 488nA
Output Voltage: 1.3V~5.3V
Voltage - Supply: 100mV~5.1V

Packaging & compliance

RoHS: ROHS3 Compliant
Lifecycle: Active
ECCN: EAR99
Packaging: Tape & Reel (TR)
Standard pack: 250 / Reel
Sold per: Piece
Minimum order: 1
Unit weight: 1.9 g

Overview

The bq25570 device is specifically designed to efficiently harvest microwatt (μW) to milliwatt (mW) levels of electrical energy generated by various high-output-impedance DC sources, such as photovoltaic (solar) or thermoelectric generators (TEGs), without causing these input sources to fail. The battery management features ensure that the rechargeable battery is not overcharged by the harvested energy and that the voltage rise or drop does not exceed the safe limits of the system load. In addition to the high-efficiency boost charger, the bq25570 also integrates a high-efficiency, micropower buck converter to provide a second power rail for systems such as wireless sensor networks (WSNs) with strict power and operational requirements. All functions of the bq25570 are available in a 20-lead, 3.5mm×3.5mm QFN small-outline package (RGR).

Applications

Solar chargers
Thermoelectric generators (TEG)
Wireless sensor networks (WSN)
Low-power wireless monitoring
Environmental monitoring
Bridge and structural health monitoring (SHM)
Smart building control
Portable and wearable health devices
Entertainment system remote control

Key features

Ultra-low power DC/DC boost charger
Cold start voltage: VIN ≥ 600mV
Continuous energy harvesting with input source as low as 100mV
Input voltage regulation prevents high-impedance input source dropout
488nA (typical) quiescent current in full operation
Transport battery save mode with battery current < 5nA
Energy storage in rechargeable Li-ion batteries, thin-film batteries, supercapacitors, or conventional capacitors
Battery charging and protection with internally set undervoltage level, user-programmable overvoltage level
Battery good output flag
Programmable threshold and hysteresis
Power-loss-pending alarm for microcontroller, can be used to enable or disable system load
Programmable buck-regulated output (step-down)
Up to 93% efficiency, supporting 110mA peak output current (typical)
Programmable maximum power point tracking (MPPT) for optimal energy extraction from multiple energy sources, including solar panels, thermoelectric and piezoelectric generators