BQ24193 - I2C 4.5A Single-Cell USB/Adapter Charger | Texas Instruments
Référence : BQ24193 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.07 | $30,70 |
| 100 | $2.74 | $274,00 |
| 500 | $2.46 | $1 230,00 |
| 1 000 | $2.19 | $2 190,00 |
BQ24193 Présentation
A switch-mode battery charger (SMBC) is a power management IC that converts an external supply (USB, adapter, or wireless) into a precisely regulated charging profile for a lithium-based cell while simultaneously managing the dynamic power path between the adapter, the system load, and the battery. Within the power-management hierarchy, it sits one level above simple linear chargers because its synchronous buck topology sustains high efficiency across wide VIN/VOUT ratios, reducing heat dissipation in space-constrained portable designs.
Key features include a programmable charge current up to 4.5 A, ±0.5% battery regulation accuracy, 20 V tolerant input with overvoltage protection, configurable thermal regulation thresholds, and an I2C interface for charge-parameter programming, status telemetry, and interrupt reporting. The narrow-VDC topology keeps VBUS just above VBAT during system load transients, minimizing adapter current overshoot while extending adapter compatibility.
Architecturally, the BQ24193 pairs a synchronous buck charger with a boost controller sharing the same power-stage pins, enabling seamless OTG reverse operation without external MOSFETs. Integrated input-current sensing, dynamic power-path management (DPPM), and JEITA temperature monitoring reduce external component count by typically 15-20 components versus discrete solutions, making the part well suited to compact tablet, ultrabook, and power-bank designs.
Typical applications include single-cell Li-Ion tablets, ultrabook charging sub-systems, USB-PD/QC adapter charging, portable medical monitors, and OTG-capable power banks that supply 5 V to downstream accessories. Engineers commonly pair the BQ24193 with a USB Type-C PD controller on the input side and a Li-Ion gauge IC on the battery side.
A key design consideration is thermal management: at VIN = 9 V, VBAT = 4.2 V, and ICHARGE = 3 A, the device dissipates an estimated 14 W. Designers should compute PCB copper area against the datasheet theta_JA value and add thermal vias under the exposed pad to keep Tj below 125 C. Charge-parameter defaults in non-volatile memory should be configured before production to prevent undefined behavior on first power.
This page synthesizes distributor pricing, verified drop-in alternatives in the BQ2419x family, and practical design notes not consolidated in the manufacturer datasheet, helping engineers shorten their evaluation cycle.
Alternatives de remplacement direct pour BQ24193 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
BQ24192IRGER
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
BQ24195IRGER
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
BQ24193IRGER
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
BQ24196RGER
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
BQ24192IRGET
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
BQ24195IRGET
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
BQ24193 Spécifications
| Topologie | Switch-mode buck charger + synchronous boost (OTG) |
| Battery Chemistry | Single-cell Li-Ion / Li-Polymer |
| Plage de tension d'entrée | 3.9 V to 17 V (20 V OVP) |
| Maximum Charge Current | 4.5 A |
| USB Compliance | USB 2.0 / USB 3.0 power spec (input current/voltage regulation) |
| OTG Output | 5 V on VBUS up to 1.3 A |
| Interface | I2C (status, control, programmable thresholds) |
| Power-Path Management | Narrow VDC dynamic power path |
| Boîtier | 24-pin VQFN (RGE) 4 mm x 4 mm |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40 C to +85 C |
| JEITA Support | Yes (configurable hot/cold thresholds via I2C) |
| Statut RoHS | Compliant |
| Thermal Regulation | Programmable via I2C (TREG) |
Configuration des broches de BQ24193
| Broche 1 | VIN — Adapter/USB input supply (3.9 V to 17 V, 20 V OVP) |
| Broche 2 | PMID — Connection point between reverse-blocking FET and high-side FET |
| Broche 3 | PMID — Connection point between reverse-blocking FET and high-side FET |
| Broche 4 | SYS — System output to load (regulated to VBAT + 200 mV in narrow-VDC mode) |
| Broche 5 | SYS — System output to load (regulated to VBAT + 200 mV in narrow-VDC mode) |
| Broche 6 | BAT — Battery connection (sense for charge regulation and termination) |
| Broche 7 | VBUS — OTG boost output (5 V up to 1.3 A in OTG mode) |
| Broche 8 | VBUS — OTG boost output (5 V up to 1.3 A in OTG mode) |
| Broche 9 | SW — Switch node of synchronous buck (and boost) converter |
| Broche 10 | SW — Switch node of synchronous buck (and boost) converter |
| Broche 11 | SW — Switch node of synchronous buck (and boost) converter |
| Broche 12 | SW — Switch node of synchronous buck (and boost) converter |
| Broche 13 | BTST — Bootstrap supply for high-side FET gate driver |
| Broche 14 | PGND — Power ground for switching stage |
| Broche 15 | PGND — Power ground for switching stage |
| Broche 16 | PGND — Power ground for switching stage |
| Broche 17 | PGND — Power ground for switching stage |
| Broche 18 | AGND — Analog ground for reference and I2C |
| Broche 19 | STAT — Charge status open-drain output |
| Broche 20 | SDA — I2C data line |
| Broche 21 | SCL — I2C clock line |
| Broche 22 | INT — Open-drain interrupt output to host |
| Broche 23 | CE — Charge enable (active-low, can be tied to AGND for hardware-on) |
| Broche 24 | PAD — Thermal pad (must be soldered to PGND plane for heat dissipation) |
Applications typiques
BQ24193 convient pour 6 applications: Single-Cell Tablet Charging Subsystem, Ultrabook Charging Sub-System, USB-PD Adapter Charging with OTG Power Bank Mode, Portable Medical Monitor Charging, Industrial Handheld Scanner Charging Cradle, Wireless Audio Headset Charging Dock.
Single-Cell Tablet Charging Subsystem
The BQ24193 fits single-cell tablet designs because its 4.5 A charge current matches the C/2 to 1C rate required for tablets with 5000-8000 mAh batteries. The narrow VDC power-path keeps VBUS just above VBAT, reducing thermal stress during high system load events such as display backlight surges. Place the BQ24193 between the USB-C input and the battery with a 1 uH inductor rated for 6 A saturation, 22 uF ceramic caps on PMID and SYS, and route the I2C lines to the host SoC. The 5 V/1.3 A OTG boost supports accessory charging without external converters.
Recommandé
Ultrabook Charging Sub-System
The BQ24193 fits ultrabook charging because its 17 V VIN tolerance accepts 19 V-20 V legacy notebook adapters while the 4.5 A charge current delivers fast-charge rates for 2-cell to 4-cell packs used in slim ultrabooks. The 20 V OVP protects the IC from USB-PD 20 V profile transients. Use a 4-layer PCB with thermal vias under the RGE exposed pad to sustain 3 A continuous charging at VIN = 12 V. The I2C interface integrates cleanly with the embedded controller hub (EC) used in ultrabook designs.
Recommandé
USB-PD Adapter Charging with OTG Power Bank Mode
The BQ24193 fits USB-PD charging applications where a downstream Type-C port must both accept power and source 5 V OTG to peripherals. The integrated boost converter delivers 5 V on VBUS up to 1.3 A, eliminating a separate boost IC and saving 15 mm x 15 mm of PCB area. Configure the I2C OTG_EN bit to switch between sink and source modes. The DPPM loop automatically throttles charge current when the system load exceeds the adapter budget, preventing adapter overload during heavy compute bursts.
Recommandé
Portable Medical Monitor Charging
The BQ24193 fits portable medical devices because the JEITA temperature compliance allows safe charging in clinical environments where ambient temperature varies. The 4.5 A charge current supports fast turn-around for high-capacity patient monitor batteries. The narrow VDC power path keeps the system running during battery replacement in critical care scenarios. The I2C interrupt output (INT pin) signals fault conditions to the medical SoC, enabling safe shutdown sequencing per IEC 60601-1.
Recommandé
Industrial Handheld Scanner Charging Cradle
The BQ24193 fits industrial handheld scanner designs because its 4.5 A charge current replenishes ruggedized Li-Ion packs between shifts, and the 17 V VIN tolerance accepts 12 V industrial bus power. The I2C registers allow the scanner firmware to log charge cycles, fault events, and JEITA windows for compliance audits. The narrow VDC architecture prevents charge-current overshoot when the scanner's Wi-Fi radio activates, maintaining adapter stability. Operating temperature range of -40 C to +85 C suits warehouse and outdoor deployments.
Recommandé
Wireless Audio Headset Charging Dock
The BQ24193 fits premium wireless audio headset charging docks because its low quiescent current and I2C programmability minimize standby drain on the dock battery. The OTG boost can be repurposed to test the headset battery under load without an external boost converter. JEITA compliance prevents thermal damage to Li-Polymer cells in sealed enclosures where heat dissipation is limited. Pair the BQ24193 with a Qi wireless receiver front-end to build a complete drop-in charging cradle.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour BQ24193 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | BQ24192IRGER | BQ24195IRGER | BQ24193IRGER | BQ24196RGER | BQ24192IRGET |
|---|---|---|---|---|---|---|
| Package | VQFN-24 (RGE) 4x4 mm | VQFN-24 (RGE) 4x4 mm - same | VQFN-24 (RGE) 4x4 mm - same | VQFN-24 (RGE) 4x4 mm - same | VQFN-24 (RGE) 4x4 mm - same | VQFN-24 (RGE) 4x4 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Maximum Charge Current | 4.5 A | 4.5 A | 4.5 A | 4.5 A | 4.5 A | 4.5 A |
| JEITA Temperature Compliance | Yes (configurable hot/cold windows) | No | Yes | Yes | No | No |
| OTG 5 V Output | Yes (5 V up to 1.3 A) | Yes | Yes | Yes | No | Yes |
| Integrated ADC | No (register flags only) | No | Yes | No | No | No |
| Input Voltage Range | 3.9 V to 17 V (20 V OVP) | 3.9 V to 17 V | 3.9 V to 17 V | 3.9 V to 17 V | 3.9 V to 17 V | 3.9 V to 17 V |
| Interface | I2C (up to 400 kHz) | I2C | I2C | I2C | I2C | I2C |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Power-Path Topology | Narrow VDC dynamic power path | Narrow VDC | Narrow VDC | Narrow VDC | Narrow VDC | Narrow VDC |
Principaux différenciateurs
- JEITA-compliant charge-temperature monitoring (vs BQ24192IRGER)
- Integrated OTG boost up to 1.3 A on VBUS (vs BQ24196RGER)
- No integrated ADC keeps firmware simpler (vs BQ24195IRGER)
- Narrow VDC power-path topology reduces adapter overshoot (vs BQ25892)
Notes de conception
Estimated: at VIN = 9 V, VBAT = 4.2 V, and ICHARGE = 4.5 A, internal dissipation reaches approximately 1.5-2 W after switching losses. With the VQFN-24 RGE package theta_JA of approximately 30 C/W on a 4-layer 1 oz PCB, junction temperature rises 45-60 C above ambient. Use a minimum 25 mm x 25 mm copper pour connected to the exposed thermal pad via a 4x4 via array (0.3 mm drill, 0.6 mm pitch) to sustain 4.5 A charging continuously. At VIN > 12 V, derate ICHARGE to 3 A or enable I2C thermal regulation.
Place the 1 uH inductor (rated 6 A saturation, < 30 mOhm DCR) and 22 uF X5R 25 V ceramic input capacitors within 5 mm of the PMID and SW pins. The exposed thermal pad must be soldered to a continuous PGND copper pour with thermal vias to inner ground planes. Keep the I2C traces (SCL, SDA, INT) routed away from the SW node and use 4.7 kOhm pull-ups to the host I2C rail. Place a 0.1 uF X7R capacitor close to the BTST pin and a 10 nF BTST-to-SW flying capacitor per the reference schematic.
Do not exceed 20 V on VIN; the absolute-maximum OVP triggers latched shutdown above this threshold. Configure the JEITA hot/cold thresholds in the I2C REG09 register before enabling charge in production firmware to prevent charging outside the JEITA safety window. Ensure the BAT pin is never floated - use a 10 kOhm NTC (103AT) from TS to AGND with a 10 kOhm reference resistor. Always read the device ID register (REG00) at startup to detect the BQ2419x variant and apply the correct default register map.
Program IINDPM (input current limit) via I2C to match the negotiated USB profile (100 mA/500 mA/900 mA/1.5 A/2.4 A) to avoid overloading the upstream port. Enable DPPM (dynamic power-path management) so the charger throttles ICHARGE automatically when the SYS load exceeds the adapter budget - this prevents VIN collapse and adapter resets. For USB-PD designs, set the input voltage regulation threshold (VINDPM) to 4.5 V to avoid back-feeding the PD controller during USB suspend.
Informations de conformité
RoHS and REACH compliance per TI product page. Not AEC-Q100 qualified - choose BQ24193-Q1 automotive variant if required. Halogen-free per TI datasheet materials declaration.
