LTC3636IUFD-1#PBF Analog Devices Integrated Circuit (Other) In Stock
Analog Devices LTC3636IUFD-1#PBF is a dual-channel 6 A, 20 V input monolithic synchronous step-down regulator delivering output voltages from 1.8 V to 12 V with current-mode control. Its phase-shift control architecture reduces input ripple and supports efficient power conversion from a 3.1 V to 20 V supply. Available from authorized distributors worldwide with in-stock inventory and competitive pricing.
- Manufacturer
- Analog Devices
- Package
- Other
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- LTC3636IUFD-1#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.5400(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC3636IUFD-1#PBF?
- Dual independent 6 A synchronous buck channels from a single IC reduce BOM cost and board area versus two discrete regulators in high-current designs
- 3.1 V to 20 V input voltage range with 1.8 V to 12 V adjustable output covers a wide range of point-of-load conversion scenarios from 12 V and 5 V rails
- Phase-shift control between dual channels reduces peak input current ripple, allowing use of smaller input bulk capacitors and lowering conducted EMI in noise-sensitive systems
What is LTC3636IUFD-1#PBF used for?
The LTC3636IUFD-1#PBF is designed for multi-rail point-of-load power supplies in communications equipment, industrial computers, and high-performance embedded systems that require two independently regulated outputs up to 6 A each from a shared 12 V or 5 V input bus. Its phase-shift architecture and synchronous rectification make it well suited for FPGA core and I/O rail generation, solid-state drive power management, and server blade power distribution where efficiency and low EMI are equally critical.
What are the specifications of LTC3636IUFD-1#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1538 |
| YTEOL | 8.5 |
| Additional Feature | ALSO OPERATES WITH VIN2 1.5V TO 20V; OUTPUT VOLTAGE RANGE FROM 1.8V TO 12V |
| Analog IC - Other Type | DUAL SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PHASE-SHIFT CONTROL |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 3.1V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PQCC-N28 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 6A |
| Output Voltage-Max | 12V |
| Output Voltage-Min | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 4000kHz |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
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 |
Where can I find the LTC3636IUFD-1#PBF datasheet?
LTC3636IUFD-1#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC3636IUFD-1#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output current and voltage range does each channel of the LTC3636IUFD-1 support?
Each of the two channels in the LTC3636IUFD-1#PBF delivers up to 6 A continuous output current with an adjustable output voltage range from 1.8 V to 12 V. This makes each channel capable of powering a 6 A load such as an FPGA core rail at 1.8 V or a PCIe interface rail at 3.3 V, with both channels operating simultaneously from the same 3.1 V to 20 V input supply.
How does the phase-shift control of the LTC3636IUFD-1 reduce input capacitor size requirements?
The LTC3636IUFD-1 uses phase-shift control to offset the switching transitions of its two channels by 180 degrees. When Channel 1 is drawing peak inductor current from the input, Channel 2 is in its freewheeling phase, so the two channels' input current pulses partially cancel. This interleaving reduces the peak-to-peak input ripple current by up to 50%, allowing designers to use input capacitors with half the ripple current rating or reduce total capacitance by roughly 30 to 40%.
Can the LTC3636IUFD-1#PBF operate from a 5 V USB or logic supply rail?
Yes, the LTC3636IUFD-1#PBF accepts input voltages as low as 3.1 V on its primary rail and as low as 1.5 V on its secondary VIN2 input, making it compatible with 5 V USB bus power or 3.3 V logic rails. When powered from a 5 V input, each channel can produce outputs from 1.8 V up to slightly below 5 V, covering common embedded system rails such as 3.3 V, 2.5 V, and 1.8 V core supplies at up to 6 A per channel.
What is the significance of the current-mode control architecture in the LTC3636IUFD-1 for multi-phase power designs?
Current-mode control in the LTC3636IUFD-1 provides inherent cycle-by-cycle current limiting on each 6 A channel, protecting the output inductor and load from fault currents without a separate overcurrent sense circuit. It also improves transient response by directly adjusting duty cycle based on inductor current feedback, achieving output voltage recovery within 10 µs to 20 µs for a 3 A load step — a significant advantage for FPGA and processor core rails with fast digital load transients.
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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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