LTC3370MPUH#TRPBF - 4-Ch 8A Configurable Buck | Analog Devices
MPN: LTC3370MPUH#TRPBF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.23 | $5.23 |
| 10 | $4.85 | $48.50 |
| 100 | $4.2 | $420.00 |
| 500 | $3.8 | $1,900.00 |
| 1,000 | $3.5 | $3,500.00 |
Drop-in alternatives for LTC3370MPUH#TRPBF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTC3370EUH#TRPBF
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →LTC3370IUH#TRPBF
✅ Drop-In✓ In Stock
$3.94 / Unit
View Datasheet →LTC3370EUH#PBF
✅ Drop-In✓ In Stock
$7.15 / Unit
View Datasheet →LTC3370IUH#PBF
✅ Drop-In✓ In Stock
$5.5 / Unit
View Datasheet →LTC3370MPUH#PBF
✅ Drop-In✓ In Stock
$5.5 / Unit
View Datasheet →LTC3370MPUH#TRPBF Maximum Ratings & Electrical Characteristics
| Output Type | Adjustable |
| Number of Outputs | 4 |
| Output Voltage Range | 0.8V to 5V (per channel) |
| Maximum Output Current | 4A per channel (configurable) |
| Input Voltage Range | 2.25V to 5.5V |
| Switching Frequency | Programmable via external resistor |
| Number of Power Stages | 8 x 1A |
| Configurations | 8 unique output configurations |
| No-Load Supply Current | Low (typical value [DATA_NEEDED: no-load supply current]) |
| Operating Junction Temperature | -40°C to 125°C |
| Package | 32-WFQFN Exposed Pad (UH) |
| Mounting Type | Surface Mount |
| Synchronous Rectification | Yes |
| RoHS Status | Compliant |
| MSL Level | [DATA_NEEDED: MSL level] |
LTC3370MPUH#TRPBF Pin Configuration
| Pin 1 | SW1 — Switch node for channel 1 |
| Pin 2 | PVIN1 — Power input for channel 1 |
| Pin 3 | VIN1 — Analog input for channel 1 |
| Pin 4 | RUN1 — Enable for channel 1 |
| Pin 5 | C1 — Configuration pin 1 |
| Pin 6 | C2 — Configuration pin 2 |
| Pin 7 | C3 — Configuration pin 3 |
| Pin 8 | RT — Switching frequency set resistor |
| Pin 9 | GND — Ground |
| Pin 10 | VOUT1 — Output voltage sense for channel 1 |
| Pin 11 | FB1 — Feedback for channel 1 |
| Pin 12 | VOUT2 — Output voltage sense for channel 2 |
| Pin 13 | FB2 — Feedback for channel 2 |
| Pin 14 | VOUT3 — Output voltage sense for channel 3 |
| Pin 15 | FB3 — Feedback for channel 3 |
| Pin 16 | VOUT4 — Output voltage sense for channel 4 |
| Pin 17 | FB4 — Feedback for channel 4 |
| Pin 18 | RUN2 — Enable for channel 2 |
| Pin 19 | RUN3 — Enable for channel 3 |
| Pin 20 | RUN4 — Enable for channel 4 |
| Pin 21 | VIN2 — Analog input for channel 2 |
| Pin 22 | PVIN2 — Power input for channel 2 |
| Pin 23 | SW2 — Switch node for channel 2 |
| Pin 24 | SW3 — Switch node for channel 3 |
| Pin 25 | PVIN3 — Power input for channel 3 |
| Pin 26 | VIN3 — Analog input for channel 3 |
| Pin 27 | SW4 — Switch node for channel 4 |
| Pin 28 | PVIN4 — Power input for channel 4 |
| Pin 29 | VIN4 — Analog input for channel 4 |
| Pin 30 | MODE — Mode selection (light load operation) |
| Pin 31 | PLLIN — External clock synchronization input |
| Pin 32 | EXTVCC — External bias supply input |
| Pin 33 | GND — Exposed pad, ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
LTC3370MPUH#TRPBF is suitable for 6 applications: FPGA and DSP Power Supplies, Battery-Powered Portable Devices, Industrial Instrumentation, Automotive Infotainment, Networking Equipment, Medical Devices.
FPGA and DSP Power Supplies
The LTC3370MPUH#TRPBF provides multiple regulated rails for FPGAs and DSPs, which often require 1.0V, 1.8V, 2.5V, and 3.3V supplies. Its four configurable buck converters can be set to deliver up to 4A per channel, meeting the core and I/O voltage requirements. The wide input range of 2.25V to 5.5V allows direct operation from a 5V or 3.3V bus, and the high efficiency reduces thermal stress in dense designs. The pin-programmable configurations simplify board layout by eliminating external components for voltage selection.
Recommended
Battery-Powered Portable Devices
In portable devices, the LTC3370MPUH#TRPBF efficiently converts battery voltage (2.25V to 5.5V) to multiple system rails. Its low no-load supply current extends battery life in standby mode, while the configurable power stages allow optimization for different load profiles. The small 32-WFQFN package saves PCB space, and the synchronous rectification provides high efficiency across the load range. This makes it ideal for smartphones, tablets, and wearables where multiple voltages are needed from a single battery.
Recommended
Industrial Instrumentation
Industrial systems often require multiple isolated or non-isolated rails for sensors, ADCs, and microcontrollers. The LTC3370MPUH#TRPBF's -40°C to 125°C temperature range ensures reliable operation in harsh environments. Its configurable outputs can be tailored to specific voltage and current needs, reducing component count and improving reliability. The external resistor-set switching frequency allows synchronization to avoid interference with sensitive analog circuits, making it suitable for precision measurement equipment.
Recommended
Automotive Infotainment
Automotive infotainment systems need multiple power rails for processors, displays, and audio amplifiers. The LTC3370MPUH#TRPBF's wide input range handles 5V and 3.3V buses, and its extended temperature range meets automotive requirements. The configurable outputs can supply up to 4A per channel for high-current loads like display backlights. Its high efficiency reduces heat generation in the cabin, and the small package fits space-constrained head units. The device is not AEC-Q100 qualified, so additional qualification may be needed.
Recommended
Networking Equipment
Networking devices such as routers and switches require multiple low-voltage rails for ASICs, PHYs, and memory. The LTC3370MPUH#TRPBF provides a compact, efficient solution with four configurable outputs. Its input range of 2.25V to 5.5V allows operation from a 5V supply, and the high output current capability supports power-hungry processors. The programmable switching frequency helps minimize EMI, which is critical in communication equipment. The device's small footprint and high integration reduce BOM cost and board space.
Recommended
Medical Devices
Medical devices often require multiple regulated voltages for sensors, processors, and communication modules. The LTC3370MPUH#TRPBF's low noise and high efficiency make it suitable for battery-powered and line-powered equipment. Its configurable outputs can be tailored to specific requirements, and the wide temperature range ensures reliable operation. The small package is ideal for portable monitors and diagnostic tools. The device's synchronous rectification minimizes power loss, extending battery life in portable medical devices.
Recommended
Recommended Products Summary
Engineering reference data for LTC3370MPUH#TRPBF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTC3370EUH#TRPBF | LTC3370IUH#TRPBF | LTC3370EUH#PBF |
|---|---|---|---|---|
| Package | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Temperature Range | -40°C to 125°C | 0°C to 85°C | -40°C to 125°C | 0°C to 85°C |
| Output Current per Channel | Up to 4A | Up to 4A | Up to 4A | Up to 4A |
| Input Voltage Range | 2.25V to 5.5V | 2.25V to 5.5V | 2.25V to 5.5V | 2.25V to 5.5V |
| Number of Outputs | 4 | 4 | 4 | 4 |
| Switching Frequency | Programmable | Programmable | Programmable | Programmable |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tray |
Key Differentiators
- Extended temperature range (-40°C to 125°C) (vs LTC3370EUH#TRPBF)
- Configurable power stages (8 x 1A) (vs LTC3370EUH#TRPBF)
- Pin-programmable configurations (vs LTC3370EUH#TRPBF)
Design Notes
Place input and output capacitors close to the respective PVIN and SW pins to minimize parasitic inductance. Use low-ESR ceramic capacitors (e.g., 10uF) for each channel. The exposed pad (GND) must be soldered to a large copper area for thermal management and electrical grounding. Ensure adequate via stitching to the ground plane.
The LTC3370MPUH#TRPBF can dissipate significant power at high output currents. The 32-WFQFN package has an exposed pad that must be connected to a thermal relief pattern. For 4A per channel, calculate power dissipation as (VIN - VOUT) * IOUT * (1 - efficiency). Use a 2-layer or 4-layer PCB with thermal vias to keep junction temperature below 125°C.
Do not exceed the absolute maximum input voltage of 5.5V. Ensure the RT pin resistor is placed close to the pin and connected to ground. The C1-C3 pins must be tied to VIN or GND to select the desired configuration; floating these pins can cause undefined behavior. Also, verify that the total output current does not exceed 8A across all channels.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free per datasheet.
