Texas Instruments BQ25155YFPR

Mfr. Part

BQ25155YFPR

Manufacturer

Luminary Micro/Texas Instruments

Y-IC is a quality distributor of Luminary Micro/Texas Instruments. We provide original, high-quality parts and deliver the best products and services to every customer.

Detailed Description

Single-cell Li-ion/Li-poly battery charger IC in a 20-ball DSBGA wafer-level package. Programmable constant charge current up to 500 mA with a 4.2 V battery regulation target. Wide ambient operating range from -40°C to 85°C. Surface-mount design optimized for space-constrained, battery-powered devices. Built-in safety and fault protections for robust charging. Base product number BQ25155.

Key Features

Battery chemistry support for Li-ion and Li-polymer

1-cell charging with 4.2 V regulation

Programmable constant-charge current up to 500 mA

Fault protection including over current, over temperature, over voltage, reverse battery, and short circuit

Operating temperature range -40°C to +85°C (TA)

Supply voltage up to 3.6 V per provided spec

Surface-mount 20-DSBGA package

RoHS3 compliant

Key Advantages

Very small footprint for wearables and compact IoT devices

Integrated protections improve safety and reliability

Programmable charge current simplifies power optimization for different battery sizes

Low external component count reduces BOM and design time

Wide temperature support suits consumer and industrial environments

Packaging

Type Tape & Reel TR for automated assembly

Package case 20-DSBGA also referenced as 20-XFBGA DSBGA wafer-level chip-scale

Supplier device package 20-DSBGA

Mounting Surface mount

Materials Lead-free, RoHS3 compliant wafer-level package with solder balls

Size Ultra-compact WLCSP footprint; see datasheet for exact ball pitch, dimensions, and land pattern

Pin configuration 20-ball array; ball map and recommended PCB layout in the datasheet

Thermal characteristics Thermal performance depends on PCB copper and layout; follow datasheet guidance for planes and vias to manage junction-to-ambient

Electrical highlights Single-cell charger, 4.2 V battery regulation, programmable charge current up to 500 mA, max supply 3.6 V per provided spec

Lifecycle

Status Active. Not indicated as NRND or EOL based on the latest public information.

Equivalent or alternative models

- Texas Instruments BQ25120A compact single-cell charger and system power solution WLCSP

- Texas Instruments BQ25121A single-cell charger with integrated buck and ultra-low quiescent operation

- Texas Instruments BQ25180 compact single-cell linear charger

- Texas Instruments BQ24074 single-cell linear charger with power-path management

- Microchip MCP73831 simple single-cell linear charger SOT-23

- Analog Devices MAX8903B single-cell charger with power-path

These are potential alternatives for similar applications. Specs, features, and pinouts differ. Always review datasheets to confirm suitability. For vetted, pin-compatible options or guidance, contact Y-IC sales via our website.

Key Application Areas

Wearables and hearables smart bands, smart watches, earbuds and charging cases

Portable medical and health sensors patches, portable monitors

IoT sensor nodes and asset trackers

Handheld consumer and industrial electronics

Wireless peripherals and remote controls

Compact battery-powered gadgets

Datasheet

Y-IC hosts the most authoritative datasheet for BQ25155YFPR on this product page. Download it here to get full specifications, ball map, layout guidelines, and design recommendations.

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