BQ24133QRGYRQ1 - 2.5A 1-3 Cell Buck Charger Q1 | TI
Référence : BQ24133QRGYR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.95 | $3,95 |
| 10 | $3.55 | $35,50 |
| 100 | $3.16 | $316,00 |
| 500 | $2.84 | $1 420,00 |
| 1 000 | $2.53 | $2 530,00 |
BQ24133QRGYR Présentation
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.
Alternatives de remplacement direct pour BQ24133QRGYR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec BQ24133QRGYR (même facteur de forme et même empreinte) — différant par Battery Temperature Monitoring, Cell Count.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
BQ24133RGYR
✓ En stock
$1.69 / unité
Voir la fiche technique →BQ24133RGYT
📋 Alternative de référence (hors catalogue)
BQ24133QRGYTQ1
📋 Alternative de référence (hors catalogue)
BQ24133RGER
📋 Alternative de référence (hors catalogue)
BQ24179RGYR
📋 Alternative de référence (hors catalogue)
BQ24133QRGYR Spécifications
| Battery Chemistry | Li-Ion / Li-Polymer |
| Cell Count | 1, 2, or 3 cells (4.2 V/cell) |
| Maximum Charge Current | 2.5 A |
| Topologie | Synchronous buck (switched-mode) |
| Fréquence de commutation | 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) |
| Boîtier | VQFN-24 (RGY) 5.5 x 3.5 mm |
| Type de montage | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified (Q1) |
| Statut RoHS | Compliant |
Configuration des broches de BQ24133QRGYR
| Broche 1 | ACN — Input current sense negative |
| Broche 2 | ACP — Input current sense positive / adapter power |
| Broche 3 | VAC — Adapter voltage detect input |
| Broche 4 | OVPSET — Input overvoltage protection threshold set |
| Broche 5 | BTST — High-side gate driver bootstrap |
| Broche 6 | SW — Switching node (inductor connection) |
| Broche 7 | PGND — Power ground |
| Broche 8 | CSN — Charge current sense negative |
| Broche 9 | CSP — Charge current sense positive / battery sense |
| Broche 10 | TS — Battery temperature NTC monitor |
| Broche 11 | VREF — Reference output |
| Broche 12 | TERM — Termination threshold program |
| Broche 13 | ISET2 — Input current limit program |
| Broche 14 | ISET1 — Charge current program |
| Broche 15 | CELL — Cell count selection (1/2/3) |
| Broche 16 | CE — Chip enable |
| Broche 17 | PGATE — Power path selector gate drive |
| Broche 18 | AGND — Analog ground |
| Broche 19 | STAT — Charge status output |
| Broche 20 | PGOOD — Power good indicator |
| Broche 21 | REGN — LDO bias supply output |
| Broche 22 | DPM — Dynamic power management sense |
| Broche 23 | SYS — System power path output sense |
| Broche 24 | BOTFET — Battery disconnect FET drive |
Applications typiques
BQ24133QRGYR convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour BQ24133QRGYR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- AEC-Q100 automotive qualification (vs BQ24133RGYR)
- Fully integrated power stage (vs BQ24179RGYR)
- 30-V input tolerance with adjustable OVP (vs BQ24133RGYT)
Notes de conception
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.
Informations de conformité
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.
