BQ24179YBGR
ActiveINTEGRATED, NVDC, 5-A 1-CELL TO 4-CELL SWITCH-MODE BUCK-BOOST BATTERY CHARGER
Deep-Dive with AI
Search across all available documentation for this part.
BQ24179YBGR
ActiveINTEGRATED, NVDC, 5-A 1-CELL TO 4-CELL SWITCH-MODE BUCK-BOOST BATTERY CHARGER
Technical Specifications
Parameters and characteristics for this part
| Specification | BQ24179YBGR |
|---|---|
| Battery Chemistry | Lithium Ion/Polymer |
| Battery Pack Voltage | 3.4 V |
| Charge Current - Max | 5 A |
| Current - Charging | Constant - Programmable |
| Fault Protection | Over Temperature, Over Voltage, Short Circuit, Over Current |
| Interface | I2C |
| Mounting Type | Surface Mount |
| Number of Cells [Max] | 4 |
| Number of Cells [Min] | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | DSBGA, 56-XFBGA |
| Programmable Features | Current, Voltage |
| Supplier Device Package | 56-DSBGA (2.9x3.3) |
| Voltage - Supply (Max) [Max] | 24 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 6.66 | |
| 10 | $ 6.01 | |||
| 25 | $ 5.74 | |||
| 100 | $ 4.98 | |||
| 250 | $ 4.76 | |||
| 500 | $ 4.34 | |||
| 1000 | $ 3.78 | |||
| Digi-Reel® | 1 | $ 6.66 | ||
| 10 | $ 6.01 | |||
| 25 | $ 5.74 | |||
| 100 | $ 4.98 | |||
| 250 | $ 4.76 | |||
| 500 | $ 4.34 | |||
| 1000 | $ 3.78 | |||
| Tape & Reel (TR) | 3000 | $ 3.46 | ||
| Texas Instruments | LARGE T&R | 1 | $ 5.10 | |
| 100 | $ 4.16 | |||
| 250 | $ 3.27 | |||
| 1000 | $ 2.77 | |||
Description
General part information
BQ24179 Series
The BQ24179 is a fully integrated switch-mode buck-boost charger for 1- to 4-cell Li-ion batteries and Li-polymer batteries. The integration includes 4 switching MOSFETs (Q1, Q2, Q3, Q4), input and charging current sensing circuits, the battery FET (QBAT) and all the loop compensation of the buck-boost converter.
It uses narrow VDC power path management, regulating the system slightly above the battery voltage without dropping below a configurable minimum system voltage. When system power exceeds the input source rating, battery supplement mode supports the system without overloading the input source.
The charger supports the NVDC power path management, in which the system is regulated at a voltage slightly higher than the battery voltage, but not drop below the minimum system voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery gets into supplement mode and prevents the input source from being overloaded and the system from crashing.
Documents
Technical documentation and resources