MAX16821BATI+T Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
The MAX16821BATI+T is a high-power synchronous half-bridge LED driver with rapid current pulsing capability, housed in a 28-pin LFCSP 5×5×0.75 mm package. Delivers precise high-current LED control for automotive and industrial lighting applications.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- MAX16821BATI+T Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.7700(MOQ 500)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX16821BATI+T?
- Synchronous half-bridge topology drives high-power LED strings with efficient current regulation, minimizing losses compared to linear LED drivers
- Rapid current pulsing capability supports high-speed PWM dimming for flicker-free LED backlights and strobe applications
- Compact 28-pin LFCSP 5 mm × 5 mm package with 260°C peak reflow rating enables automated SMT assembly in space-constrained lighting modules
What is MAX16821BATI+T used for?
The MAX16821BATI+T is designed for high-power LED lighting drivers in automotive headlamp adaptive front-lighting systems and HB LED backlights for industrial displays, where the synchronous half-bridge topology achieves greater efficiency at high LED currents compared to conventional buck-mode drivers. It is also used in professional studio strobe lighting, high-intensity searchlights, and medical endoscopy illumination where rapid current pulsing enables precise microsecond-range PWM dimming with minimal LED thermal stress.
What are the specifications of MAX16821BATI+T?
| Manufacturer Package Code | 28-LFCSP-5X5X0.75 |
| Date Of Intro | 2007-08-22 |
| YTEOL | 10 |
| Interface IC Type | LED DISPLAY DRIVER |
| JESD-609 Code | e3 |
| Peak Reflow Temperature (Cel) | 260 |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Where can I find the MAX16821BATI+T datasheet?
MAX16821BATI+T Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for MAX16821BATI+T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What switching topology does the MAX16821BATI+T use, and how does it improve LED driver efficiency?
The MAX16821BATI+T uses a synchronous half-bridge topology in which both the high-side and low-side switches are MOSFETs rather than a MOSFET plus a diode. Replacing the rectifier diode with a synchronous switch eliminates the 0.5–0.7 V forward diode drop, reducing power loss by up to several watts at currents above 1 A, which is significant in high-brightness LED headlamp and industrial spotlight applications operating continuously.
How does the rapid current pulsing feature of the MAX16821BATI+T benefit PWM LED dimming applications?
Rapid current pulsing allows the LED current to transition from zero to full brightness and back within microseconds, enabling PWM dimming at frequencies above 1 kHz without visible flicker for human observers. In automotive adaptive headlights and cinema-grade LED panels where precise luminance steps and synchronization with camera frame rates are required, this fast switching avoids the color-shift artifacts that occur when dimming is performed too slowly at the LED junction level.
What package does the MAX16821BATI+T use, and how does it affect thermal management in a high-power LED driver board?
The IC uses a 28-pin LFCSP measuring 5 mm × 5 mm × 0.75 mm with an exposed pad on the bottom. Soldering the exposed pad to a PCB copper thermal via array provides a low thermal-resistance path from the die to the board, typically achieving junction-to-board values below 10°C/W, which keeps the controller die well below 125°C even when surrounding high-power LED components generate significant board-level heat.
For an automotive LED headlamp design, what makes the MAX16821BATI+T suitable for under-hood or near-headlamp module placement?
The device is rated for an ambient temperature range reaching up to 125°C, accommodating the elevated temperatures near automotive headlamp housings and underhood environments. Its 260°C peak reflow rating with matte tin finish enables standard lead-free soldering processes. When combined with the synchronous half-bridge's lower thermal dissipation per watt of LED output, the IC can drive multi-ampere LED currents in compact modules without requiring a separate large heatsink attachment.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $5.6500 | $2825.00 |
| 1000+ | $4.7700 | $4770.00 |
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