BQ24133QRGYRQ1 - 2.5A 1-3 Cell Buck Charger Q1 | TI
MPN: BQ24133QRGYR ✓ Hoạt độngBQ24133QRGYR Tóm tắt
A switched-mode battery charger is a DC-DC converter-based power management IC that regulates charge current and battery voltage with far higher efficiency than linear chargers. Within the power-management IC hierarchy, the BQ24133 family sits between a generic buck regulator and a full battery management IC, adding charge termination, thermal regulation, and adapter-to-battery power path selection.
Key features include a 1.6-MHz constant-frequency synchronous PWM controller delivering up to 92% efficiency, a 30-V input rating with adjustable input overvoltage protection, a 4.5-V to 17-V operating input range, and an automatic power path selector between the adapter and battery. High-accuracy regulation of input current, charge current, and charge voltage enables the device to safely work with limited-adapter-power systems, while dynamic power management protects overloaded sources.
The device closely monitors battery pack temperature (TS pin with NTC) and permits charging only within a preset temperature window, an essential safety behavior for automotive and industrial lithium batteries. Integrated MOSFETs eliminate external discrete transistors, shrinking the solution footprint and reducing BOM count.
Typical applications include automotive infotainment and telematics backup batteries, industrial handheld instruments, portable medical devices, and battery-backed servers or gateways requiring seamless adapter-to-battery transition. The power path feature keeps the system alive even with a deeply discharged battery.
Design consideration: the 1.6-MHz switching frequency permits small inductors, but PCB layout of the power loop must be tight; place the inductor, input capacitor, and PGND connections per the datasheet layout guidelines to minimize EMI.
Bộ thay thế dễ dàng lắp đặt cho BQ24133QRGYR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với BQ24133QRGYR (cùng hình factor và footprint) — khác nhau ở Battery Temperature Monitoring, Cell Count.
BQ24133RGYR
Liên hệ để biết giá
Xem tài liệu →BQ24133RGYT
📋 Tham chiếu thay thế (không có trong danh mục)
BQ24133QRGYTQ1
📋 Tham chiếu thay thế (không có trong danh mục)
BQ24133RGER
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BQ24179RGYR
📋 Tham chiếu thay thế (không có trong danh mục)
BQ24133QRGYR Thông số kỹ thuật
| Battery Chemistry | Li-Ion / Li-Polymer |
| Cell Count | 1, 2, or 3 cells (4.2 V/cell) |
| Maximum Charge Current | 2.5 A |
| Cấu trúc | Synchronous buck (switched-mode) |
| Tần số chuyển đổi | 1.6 MHz |
| Peak Efficiency | Up to 92% |
| Input Operating Voltage | 4.5 V to 17 V |
| Input Absolute Maximum Rating | 30 V with adjustable overvoltage protection |
| Integrated MOSFETs | Two N-channel power MOSFETs |
| Power Path | Automatic adapter/battery selector with dynamic power management |
| Battery Temperature Monitoring | TS pin NTC window monitoring |
| Control Type | Stand-alone (no host processor required) |
| Hộp | VQFN-24 (RGY) 5.5 x 3.5 mm |
| Kiểu lắp đặt | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified (Q1) |
| Trạng thái RoHS | Compliant |
Cấu hình chân BQ24133QRGYR
| Chân 1 | ACN — Input current sense negative |
| Chân 2 | ACP — Input current sense positive / adapter power |
| Chân 3 | VAC — Adapter voltage detect input |
| Chân 4 | OVPSET — Input overvoltage protection threshold set |
| Chân 5 | BTST — High-side gate driver bootstrap |
| Chân 6 | SW — Switching node (inductor connection) |
| Chân 7 | PGND — Power ground |
| Chân 8 | CSN — Charge current sense negative |
| Chân 9 | CSP — Charge current sense positive / battery sense |
| Chân 10 | TS — Battery temperature NTC monitor |
| Chân 11 | VREF — Reference output |
| Chân 12 | TERM — Termination threshold program |
| Chân 13 | ISET2 — Input current limit program |
| Chân 14 | ISET1 — Charge current program |
| Chân 15 | CELL — Cell count selection (1/2/3) |
| Chân 16 | CE — Chip enable |
| Chân 17 | PGATE — Power path selector gate drive |
| Chân 18 | AGND — Analog ground |
| Chân 19 | STAT — Charge status output |
| Chân 20 | PGOOD — Power good indicator |
| Chân 21 | REGN — LDO bias supply output |
| Chân 22 | DPM — Dynamic power management sense |
| Chân 23 | SYS — System power path output sense |
| Chân 24 | BOTFET — Battery disconnect FET drive |
Ứng dụng tiêu biểu
BQ24133QRGYR phù hợp cho 6 Áp dụngs: Automotive Telematics and Infotainment Backup, Industrial Handheld Instruments, Portable Medical Devices, Battery-Backed Servers and Gateways, POS Terminals and Rugged Handhelds, IoT and Smart-Home Backup Power.
Automotive Telematics and Infotainment Backup
The BQ24133QRGYRQ1 is AEC-Q100 qualified and tolerates a 30-V input with adjustable overvoltage protection, matching load-dump-protected automotive 12-V rails. Its 1.6-MHz synchronous buck charges 1-3 cell Li-Ion backup batteries at up to 2.5 A with 92% peak efficiency, minimizing heat in sealed modules. The automatic power path keeps telematics units alive during crank or adapter dropout by seamlessly switching between adapter and battery, while NTC-based temperature window monitoring enforces safe pack charging.
Được đề xuất
Industrial Handheld Instruments
Battery-powered field instruments benefit from the stand-alone operation of the BQ24133: resistor-programmed charging with no host MCU reduces firmware complexity. The 4.5-V to 17-V input accepts universal wall adapters, and 2.5-A charging refills 2-cell or 3-cell packs quickly. Up to 92% efficiency and 1.6-MHz switching allow a small inductor, keeping handheld enclosures compact. Power path selection lets the tool run directly from the adapter even with a fully discharged battery.
Được đề xuất
Portable Medical Devices
Portable diagnostic and monitoring devices require quiet, efficient, and safe battery charging. The BQ24133's high-accuracy regulation of charge current and voltage protects sensitive Li-Polymer packs, while the TS-pin NTC window prevents charging outside safe temperatures - a patient-safety concern. The synchronous 1.6-MHz buck avoids low-frequency ripple near signal bands, and power path management guarantees uninterrupted operation during battery exchange, critical for mobile medical instrumentation.
Được đề xuất
Battery-Backed Servers and Gateways
Network gateways and server BMC subsystems use the BQ24133 to maintain UPS-style battery backup. The 17-V operating input supports common 12-V intermediate buses, and dynamic power management limits adapter current draw when the source is overloaded. Charging a 3-cell (12.6-V) battery at up to 2.5 A provides meaningful ride-through time, and automatic adapter-to-battery transition occurs without host intervention, ensuring network hardware stays online through power interruptions.
Được đề xuất
POS Terminals and Rugged Handhelds
Payment terminals and rugged scanners demand fast recharge times between shifts. The BQ24133 charges 1-2 cell packs at up to 2.5 A - a typical 2000-mAh cell refills in roughly one hour. Adjustable input OVP (30-V rating) protects against miswired adapters, a real field hazard. The stand-alone architecture with thermal regulation and NTC battery monitoring delivers certified-safety charging behavior without adding a supervisory MCU, simplifying product certification.
Được đề xuất
IoT and Smart-Home Backup Power
Smart hubs, door controllers, and security panels require seamless failover to battery during outages. The BQ24133's automatic power path selector maintains the system rail from the adapter while trickle-refilling the backup cell; on adapter loss, the battery takes over instantly with no brownout. The 4.2 V/cell precision keeps small 1-cell Li-Ion backup batteries healthy for years, and stand-alone operation removes firmware maintenance burden from cost-sensitive IoT products.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho BQ24133QRGYR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | BQ24133RGYR | BQ24133RGYT | BQ24133QRGYTQ1 | BQ24179RGYR |
|---|---|---|---|---|---|
| Package | VQFN-24 (RGY) 5.5x3.5 mm | VQFN-24 (RGY) - same | VQFN-24 (RGY) - same | VQFN-24 (RGY) - same | VQFN-24 (RGY) - same footprint, different pinout |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Automotive Qualification | AEC-Q100 (Q1) | No | No | Yes (Q1) | No |
| Cell Count | 1-3 cells (4.2 V/cell) | 1-3 cells | 1-3 cells | 1-3 cells | 1-4 cells |
| Control Interface | Stand-alone (resistor programmed) | Stand-alone | Stand-alone | Stand-alone | I2C host controlled |
| Packaging | Tape & Reel (3000) | Tape & Reel | Tray | Tray | Tape & Reel |
Bảo phân biệt quan trọng
- AEC-Q100 automotive qualification (vsBQ24133RGYR)
- Fully integrated power stage (vsBQ24179RGYR)
- 30-V input tolerance with adjustable OVP (vsBQ24133RGYT)
Ghi chú thiết kế
Keep the synchronous buck power loop tight: place the input capacitor, integrated MOSFET SW node, inductor, and PGND as close as possible. Use a solid ground plane with multiple thermal vias under the VQFN-24 exposed pad (5.5x3.5 mm). At 2.5 A and 1.6 MHz, loop inductance drives switching spikes; follow the layout example in TI datasheet Rev. D Section on application/layout guidelines.
Size the inductor for 1.6-MHz operation and 2.5-A peak current with adequate saturation margin; verify ripple current against the datasheet design equations. Set the input current limit (ISET2) below the adapter rating so dynamic power management (DPM) throttles charge current before collapsing the source. Program the OVPSET divider so 30-V transient tolerance and adapter OVP align with your source spec.
Do not omit the TS NTC divider - the charger will not start without a valid temperature window, and an open TS pin halts charging. Confirm the CELL pin strapping matches the pack (4.2/8.4/12.6 V), as misprogramming overcharges the battery. Ensure CE pin control matches power sequencing intent, and verify STAT/PGOOD pull-up rails are alive during boot for correct host status readback.
Thông tin tuân thủ
Q1 suffix indicates AEC-Q100 qualification per TI product page. RoHS/lead-free status per standard TI green packaging; verify REACH and halogen-free status on TI product page for latest declarations.
