This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

BQ24157YFFR +BOM

I2C 1cell 1.55A Buck battery charger with OTG

BQ24157YFFR General Description

The charging process consists of three phases – conditioning, constant current, and constant voltage – ensuring optimal battery performance. The IC also includes safety features such as input current limitation and charge termination based on battery voltage, enhancing overall reliability

Key Features

  • Power Up System without Battery
  • Charge Faster than Linear Chargers
  • High-Accuracy Voltage and Current Regulation
    • Input Current Regulation Accuracy: ±5% (100 mA and 500 mA)
    • Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C to 125°C)
    • Charge Current Regulation Accuracy: ±5%
  • Input Voltage Based Dynamic Power Management (VIN DPM)
  • Bad Adaptor Detection and Rejection
  • Safety Limit Register for Maximum Charge Voltage and Current Limiting
  • High-Efficiency Mini-USB/AC Battery Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
  • 20-V Absolute Maximum Input Voltage Rating
  • 6.5-V Maximum Operating Input Voltage
  • Built-In Input Current Sensing and Limiting
  • Integrated Power FETs for Up To 1.55-A Charge Rate
  • Programmable Charge Parameters through I2C™ Compatible Interface (up to 3.4 Mbps):
    • Input Current Limit
    • VIN DPM Threshold
    • Fast-Charge/Termination Current
    • Charge Regulation Voltage (3.5 V to 4.44 V)
    • Low Charge Current Mode Enable/Disable
    • Termination Enable/Disable
  • Support up to 1.55A Charge Current using 55 mΩ Sensing Resistor
  • Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty Cycle
  • Automatic High Impedance Mode for Low Power Consumption
  • Robust Protection
    • Reverse Leakage Protection Prevents Battery Drainage
    • Thermal Regulation and Protection
    • Input/Output Overvoltage Protection
  • Status Output for Charging and Faults
  • USB Friendly Boot-Up Sequence
  • Automatic Charging
  • Boost Mode Operation for USB OTG
    • Input Voltage Range (from Battery): 3.2 V to 4.5 V
  • 2.1 mm x 2 mm 20-Pin WCSP Package

Specifications

Number of series cells 1 Charge current (max) (A) 1.55
Vin (max) (V) 6 Cell chemistry Li-Ion/Li-Polymer
Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44
Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck
Control interface I2C Features Input OVP, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power)
Vin (min) (V) 4 Rating Catalog
Operating temperature range (°C) -40 to 125

Service Policies and Others

After-Sales & Settlement Related

payment Payment

Payment Method

hsbc
TT/Wire Transfer
paypal
Paypal
wu
Western Union
mg
Money Gram

For alternative payment channels, please reach out to us at:

[email protected]
shipping Shipping & Packing

Shipping Method

fedex
Fedex
ups
UPS
dhl
DHL
tnt
NTN
Packing

AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

Warranty Warranty

We promise to provide 365 days quality assurance service for all our products.

Ratings and Reviews

More
C
C**b 04/25/2024

Good programmers, they work well with the ProgISP V1.72 for the Atmel processorsFast delivery, good seller.

1
M
M**r 12/22/2021

Not very precise values. Can't ask for more with this price

14
W
W**m 05/18/2020

Kind of normal. I'll check it out.

11
J
J**b 02/08/2020

Good product. Reached fast. Thanks

12

Reviews

You need to log in to reply. Sign In | Sign Up

In Stock: 4,399

Minimum Order: 1

Qty. Unit Price Ext. Price
1+ $1.317 $1.32
10+ $1.113 $11.13
30+ $1.000 $30.00
100+ $0.828 $82.80
500+ $0.771 $385.50
1000+ $0.746 $746.00

The prices below are for reference only.