LTC3633EUFD#TRPBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
LTC3633EUFD#TRPBF is a dual 3 A monolithic synchronous step-down regulator from Analog Devices with 3.6 V to 15 V input range, 4 MHz switching frequency, current-mode control, and LDO fallback operation. Ideal for point-of-load regulation in communications, industrial, and processor power supply designs.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- LTC3633EUFD#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.8300(MOQ 1)
- Temp Range
- ?°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual 3 A output channels for two independent point-of-load rails in one IC
- Wide 3.6 V to 15 V input voltage range covering 5 V, 12 V, and intermediate bus architectures
- 4 MHz switching frequency enabling ultra-compact inductor and capacitor selection
- Current-mode control with burst mode for high efficiency at light loads
- Also operates as an LDO regulator providing design flexibility in low-dropout scenarios
Applications
LTC3633EUFD#TRPBF is designed for high-density point-of-load power conversion in servers, networking equipment, and FPGAs requiring dual regulated outputs from a 12 V bus. Its 4 MHz switching frequency and monolithic integration reduce external component size, making it suitable for space-constrained industrial controllers, test instruments, and communication modules.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1712 |
| YTEOL | 10 |
| Additional Feature | ALSO OPERATES AS LDO REGULATOR |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | BURST MODE |
| Input Voltage-Max | 15V |
| Input Voltage-Min | 3.6V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PQCC-N28 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 4.5A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 4600kHz |
| Technology | CMOS |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## LTC3633EUFD#TRPBF Alternates Showing results | Image |
| 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 | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LTC3633EUFD#TRPBF:
suggested
Frequently Asked Questions
Can LTC3633EUFD#TRPBF power both 1.8 V and 3.3 V rails simultaneously from a 12 V input bus?
Yes. LTC3633EUFD#TRPBF provides 2 independent output channels each rated at 3 A, operating from a 3.6 V to 15 V input. With a nominal 12 V input, both channels can be independently programmed to deliver 1.8 V and 3.3 V outputs simultaneously, covering typical FPGA core and I/O rail requirements.
How does the 4 MHz switching frequency of LTC3633EUFD#TRPBF benefit PCB size and filter design compared to lower-frequency regulators?
Operating at 4 MHz allows LTC3633EUFD#TRPBF to use inductors smaller than 1 µH and ceramic capacitors in the nF range, dramatically reducing the PCB footprint compared to a 300 kHz regulator requiring much larger magnetics. This is critical for high-density server blades and communications hardware.
What happens to LTC3633EUFD#TRPBF efficiency when the load current drops below rated levels, such as in standby mode?
LTC3633EUFD#TRPBF uses burst mode control technique, which reduces switching losses by skipping pulses at light loads. This maintains high efficiency when current demand drops well below the 3 A rated output, extending battery life in portable systems or reducing heat dissipation in server idle states.
Is LTC3633EUFD#TRPBF RoHS-compliant, and what packaging options are available for automated production?
LTC3633EUFD#TRPBF carries a Pbfree Code of No, indicating this specific variant is not fully RoHS lead-free. The TRPBF suffix confirms tape-and-reel packaging for automated SMT assembly. Engineers requiring a RoHS-compliant version should verify an alternate Analog Devices suffix that meets lead-free requirements for their region.
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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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