LT3572EUF#TRPBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
Analog Devices LT3572EUF#TRPBF is a dual 500mA piezo driver combined with a 900mA boost converter in a 20-lead QFN package, operating from 2.5V to 10V input. It uses current-mode PWM control for efficient haptic feedback and boost regulation. Suitable for portable and wearable applications with space constraints.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- LT3572EUF#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8100(MOQ 19)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual 500mA piezo driver with integrated 900mA boost converter delivers complete haptic feedback power solution in a single 20-lead QFN IC
- Wide input voltage range of 2.5V to 10V supports single-cell Li-ion and multi-cell battery-powered portable devices
- Current-mode PWM control with 5V nominal operation provides fast transient response and accurate output regulation for piezo actuators
- Compact QFN-20 (S-PQCC-N20) package minimizes PCB area for wearables, smartphones, and handheld instruments requiring haptic feedback
Applications
The LT3572EUF#TRPBF is designed for portable consumer electronics and wearable devices where piezoelectric haptic actuators require a stable boosted voltage and high peak drive current from a 3.7V Li-ion battery. It is also used in industrial handheld instruments, medical wearables, and gaming controllers needing dual-channel piezo excitation with an integrated boost converter to reduce component count and PCB footprint.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1710 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 2.5V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | S-PQCC-N20 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 1.7A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 2600kHz |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| 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 | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output current can the LT3572EUF#TRPBF deliver to piezo actuators and its boost converter simultaneously?
The LT3572EUF#TRPBF provides dual piezo driver outputs each capable of 500mA peak current, and a separate 900mA boost converter output, all operable concurrently from a 2.5V to 10V input. This combination allows designers to drive high-capacitance piezoelectric transducers at full current while simultaneously powering auxiliary circuits from the boosted output, simplifying power architecture in portable haptic feedback systems.
For a wearable device running on a 3.7V Li-ion cell, how does the LT3572EUF#TRPBF supply piezo drive voltage?
With a 3.7V Li-ion input (within its 2.5V to 10V range), the LT3572EUF#TRPBF boost converter steps up the battery voltage to the higher potential required by piezo actuators, typically 10V to 30V depending on actuator characteristics, while the integrated dual 500mA drivers deliver the necessary peak current pulses. This architecture eliminates discrete boost inductors and driver ICs, reducing the wearable's total solution size significantly.
How does current-mode PWM control in the LT3572EUF#TRPBF benefit piezo actuator drive accuracy?
Current-mode PWM control in the LT3572EUF#TRPBF enables cycle-by-cycle peak current limiting for the 900mA boost converter, providing inherent short-circuit protection and fast load transient response. For piezo actuation, this translates to precise charge delivery per PWM cycle, ensuring consistent haptic intensity across varying battery voltages from 2.5V to 10V and temperature conditions, which is critical for repeatable user feedback sensation.
What package does the LT3572EUF#TRPBF use and how does it impact thermal performance in handheld designs?
The LT3572EUF#TRPBF is packaged in a 20-lead QFN (S-PQCC-N20) with an exposed pad that improves thermal dissipation through the PCB. This exposed pad reduces junction-to-board thermal resistance compared to SOIC or TSSOP packages, allowing the IC to sustain the full 500mA dual driver and 900mA boost operation without external heatsinks in most handheld operating environments up to 85°C ambient.
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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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| 1000+ | $3.8100 | $3810.00 |
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