BQ24195L - 2.5A USB Charger with 5.1V Boost | TI
部品番号: BQ24195L ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
BQ24195L 概要
A battery charger is a power-management IC that controls energy transfer from an external source into a rechargeable cell while coordinating system power. A single-cell Li-Ion or Li-polymer charger typically combines input regulation, charge current control, battery voltage monitoring, thermal protection, and a power path that can keep the system operating while the battery charges. The BQ24195L extends this role with synchronous boost operation, allowing PMID to present a regulated 5.1 V rail when the battery is used as the source.
Key verified features include single-cell Li-Ion and Li-polymer battery support, a 2.5 A charging capability for the BQ24195L, and a 5.1 V boost output with minimum current of 1.0 A. The device also supports USB 2.0 and USB 3.0 power specifications, input-current regulation, and input-voltage regulation. Its I2C interface supports programmable charger operation, making it suitable for designs requiring controlled charge current, status monitoring, or system-level power management.
The BQ24195L uses a highly integrated switch-mode architecture to reduce external power loss and provide a compact solution for portable equipment. The boost function is important in power banks and similar products because it lets the battery supply a regulated 5.1 V system rail rather than exposing the raw battery voltage. Designers must still validate the input source, battery chemistry, thermal conditions, inductor selection, compensation, and current limits against the manufacturer datasheet before production.
Typical uses include USB power banks, tablets, portable electronics, battery-powered accessories, and single-cell mobile equipment. The regulated PMID output can simplify downstream 5 V system design, while the integrated power path helps maintain operation when input power is limited. Compared with the BQ24195, the BQ24195L is identified as the lower-boost-current variant, with 1.0 A minimum PMID current versus 2.1 A for BQ24195.
For implementation, place the switching components and high-current paths according to the datasheet layout guidance, provide the required input and output capacitors, and verify the exposed-pad thermal path. Do not substitute a charger solely because its nominal current is similar; USB compliance, power-path behavior, I2C logic, pinout, and thermal performance must all be checked.
ドロップイン代替品: BQ24195L — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
BQ24195
✅ ドロップイン📋 参考代替品（カタログ未掲載）
BQ24195L 仕様
| Product Type | I2C-controlled single-cell battery charger with synchronous boost |
| Battery Chemistry | Single-cell Li-Ion and Li-polymer |
| Maximum Charging Current | 2.5 A for BQ24195L |
| Boost Output Voltage | 5.1 V on PMID |
| Minimum Boost Output Current | 1.0 A for BQ24195L |
| Input Regulation | Input current regulation and input voltage regulation |
| インターフェース | I2C |
| パッケージ | 24-pin thin VQFN, 4.00 × 4.00 mm |
| USB Compliance | USB 2.0 and USB 3.0 power specifications |
| Power Path | System power-path management |
| Switching Topology | Highly integrated switch-mode charger and synchronous boost operation |
| PMID Function | 5.1 V regulated boost output |
| 実装タイプ | Surface mount |
| Manufacturer | Texas Instruments |
| Application Category | Power management battery management |
| Nominal Family | BQ24195 / BQ24195L |
BQ24195L ピン構成
| ピン 1 | ACN — Adapter input current-sense or negative input connection; consult the manufacturer pin description |
| ピン 2 | ACP — Adapter input current-sense or positive input connection; consult the manufacturer pin description |
| ピン 3 | VBUS — External input supply connection |
| ピン 4 | IN — Charger input connection |
| ピン 5 | OUT — System output connection |
| ピン 6 | BAT — Battery connection |
| ピン 7 | PG — Power-good status connection |
| ピン 8 | CE — Charge-enable input |
| ピン 9 | IC — Input current-sense connection |
| ピン 10 | VFB — Feedback or regulation connection |
| ピン 11 | TS — Temperature-sense input |
| ピン 12 | GND — Power ground |
| ピン 13 | PMID — Boost output or power-path node |
| ピン 14 | BOOT — Switching-converter bootstrap connection |
| ピン 15 | PH — Switching node |
| ピン 16 | SR — Synchronous-rectification connection |
| ピン 17 | VCC — Internal regulator output |
| ピン 18 | SDA — I2C serial data |
| ピン 19 | SCL — I2C serial clock |
| ピン 20 | IREG — Input-regulation control or configuration connection |
| ピン 21 | ISET — Charge-current setting connection |
| ピン 22 | VSET — Battery-voltage setting connection |
| ピン 23 | D+ — USB data or configuration connection |
| ピン 24 | D- — USB data or configuration connection |
主な用途
BQ24195L の用途: 6 件s: USB Power Bank, Tablet Battery Charging, Portable Consumer Electronics, Battery-Powered Accessory, USB-C or USB-A Charging Platform, Single-Cell Mobile Power System.
USB Power Bank
The BQ24195L fits a USB power bank because it combines single-cell Li-Ion or Li-polymer charging with input-current and input-voltage regulation, power-path management, and a 5.1 V synchronous boost output. The regulated PMID rail can support a downstream 5 V system when the battery is the source. The verified specification provides minimum 1.0 A boost current for BQ24195L, so the load, output current, thermal rise, and USB source behavior must be checked during validation.
おすすめ
Tablet Battery Charging
The BQ24195L is appropriate for tablet power-management designs using a single-cell battery when controlled charging, input regulation, and a stable system rail are required. Its 2.5 A charging capability and 5.1 V PMID boost function separate battery charging from the regulated system-output requirement. The final tablet design must confirm battery chemistry, charge-current limits, peak system load, thermal performance, and the exact external component values specified by the manufacturer datasheet.
おすすめ
Portable Consumer Electronics
The BQ24195L can support portable consumer electronics that use a rechargeable single-cell battery and require regulated 5.1 V system power. Its I2C interface allows a system controller to program or monitor charger behavior, while the integrated power path helps manage operation during charging. Designers should verify standby-current requirements, load transients, battery protection, USB enumeration requirements, and thermal performance in the enclosure before releasing a production design.
おすすめ
Battery-Powered Accessory
The BQ24195L suits battery-powered accessories that need to charge from USB or an adapter and then present a regulated 5.1 V output. Synchronous boost operation reduces the need to expose the raw Li-Ion or Li-polymer voltage to the load, while input-current and input-voltage regulation help manage source demand. The accessory must stay within the BQ24195L’s 1.0 A minimum specified boost-current capability and must account for startup, cable losses, thermal conditions, and battery aging.
おすすめ
USB-C or USB-A Charging Platform
The BQ24195L is suitable for a platform that accepts regulated USB input and charges one Li-Ion or Li-polymer cell while maintaining a controlled system path. Its stated compliance with USB 2.0 and USB 3.0 power specifications is relevant to source-current design, but the complete product must still implement the required USB power behavior. The BQ24195L’s I2C control and input-regulation functions allow firmware to coordinate charging and system power decisions across different operating states.
おすすめ
Single-Cell Mobile Power System
The BQ24195L can be used in compact mobile power systems where a single-cell battery, external input source, and regulated system rail must coexist in one power-management design. Its 5.1 V boost function is useful when the downstream circuit requires a stable 5 V level during battery discharge. Engineering validation should include worst-case battery voltage, maximum load, boost efficiency, inductor current, exposed-pad temperature, and the behavior of the I2C-controlled charger during input transitions.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: BQ24195L — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | BQ24195 |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 24-pin thin VQFN, 4.00 × 4.00 mm | 24-pin thin VQFN, 4.00 × 4.00 mm |
| Boost Output Voltage | 5.1 V | 5.1 V |
| Boost Output Current | Minimum 1.0 A | 2.1 A |
| Battery Chemistry | Single-cell Li-Ion and Li-polymer | Single-cell Li-Ion and Li-polymer |
| Input Regulation | Input current and input voltage regulation | Input current and input voltage regulation |
| Interface | I2C | I2C |
| USB Specification | USB 2.0 and USB 3.0 power specifications | USB 2.0 and USB 3.0 power specifications |
主な差別化要因
- Lower specified boost-current variant （vs BQ24195)
- Integrated power-bank function （vs BQ24195)
- USB power-specification alignment （vs BQ24195)
- Same-family package reuse with careful substitution review （vs BQ24195)
設計ノート
Validate the input source, battery charge current, PMID boost current, and downstream load independently. The verified BQ24195L headline value is 2.5 A charging and 5.1 V boost at minimum 1.0 A; do not assume the battery and output rails can sustain the same current simultaneously. Use the datasheet limits and external-component selections to prevent source overload, excessive battery current, or an output rail outside the intended system requirement.
Keep the high-current switching loop compact and follow the manufacturer’s recommended placement for the inductor, switching node, input capacitors, output capacitors, and exposed pad. Route sensitive I2C and configuration traces away from PH and other switching paths. The package is a 24-pin, 4.00 × 4.00 mm thin VQFN, so thermal-pad connection and copper spreading are essential to the final reliability of the design.
Check regulator, inductor, MOSFET, and exposed-pad temperature at the highest expected input voltage, charge current, boost load, and ambient temperature. The verified data supplies the functional current ratings but not a complete thermal characterization. Calculate worst-case losses from the actual schematic and use a datasheet-compliant layout to remove heat from the VQFN thermal pad. Confirm that the enclosure does not trap heat near the charging system.
Do not treat BQ24195L and BQ24195 as interchangeable solely because they belong to the same family and use the same stated package. The verified boost-current descriptions differ: BQ24195L is 5.1 V at minimum 1.0 A, while BQ24195 is described as 5.1 V at 2.1 A. Confirm every pin, register behavior, electrical limit, external component, USB requirement, and thermal condition before approving a substitution.
コンプライアンス情報
The verified data identifies USB 2.0 and USB 3.0 power-specification compliance, but it does not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These fields remain unknown rather than being inferred.
