BQ25040DQCT
Active1.1-A, SINGLE-INPUT, SINGLE CELL LI-ION BATTERY CHARGER WITH 50MA LDO IN 2X3 QFN
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BQ25040DQCT
Active1.1-A, SINGLE-INPUT, SINGLE CELL LI-ION BATTERY CHARGER WITH 50MA LDO IN 2X3 QFN
Technical Specifications
Parameters and characteristics for this part
| Specification | BQ25040DQCT |
|---|---|
| Battery Chemistry | Lithium Ion |
| Battery Pack Voltage | 4.2 V |
| Charge Current - Max [Max] | 1.1 A |
| Current - Charging | Constant - Programmable |
| Fault Protection | Over Voltage, Over Temperature |
| Mounting Type | Surface Mount |
| Number of Cells | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | 0 °C |
| Package / Case | 10-WFDFN Exposed Pad |
| Supplier Device Package | 10-WSON (3x2) |
| Voltage - Supply (Max) [Max] | 6.7 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 | $ 1.82 | |
| 10 | $ 1.63 | |||
| 25 | $ 1.54 | |||
| 100 | $ 1.31 | |||
| Digi-Reel® | 1 | $ 1.82 | ||
| 10 | $ 1.63 | |||
| 25 | $ 1.54 | |||
| 100 | $ 1.31 | |||
| Tape & Reel (TR) | 250 | $ 0.93 | ||
| 500 | $ 0.86 | |||
| 750 | $ 0.82 | |||
| 1250 | $ 0.78 | |||
| 1750 | $ 0.76 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.37 | |
| 100 | $ 1.13 | |||
| 250 | $ 0.81 | |||
| 1000 | $ 0.61 | |||
Description
General part information
BQ25040 Series
The bq25040 is an integrated Li-ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC adapter and charges a single cell Li-Ion battery with up to 1.1A of charge current.
The bq25040 has a single power output that charges the battery. A system load can be placed in parallel with the battery. The charge current is programmed using the ISET and EN/SET inputs. The input current limit is programmable to USB100, USB500 or a user programmed current limit up to 1.1A. Additionally, a 4.9V ±3% 50mA LDO is integrated into the IC for supplying low power external circuitry. The single-input interface (EN/SET) is used to select the charge current and to place the bq25040 into Production Test Mode. In Production Test Mode, the bq25040 operates as a linear regulator without a battery connected, where the output is regulated at 4.2V and supplies up to 2.3A to calibrate GSM transceivers.
The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded.
Documents
Technical documentation and resources
