LTC3370IUH#PBF - 4-Ch 8A Configurable Buck DC/DC | Analog Devices
MPN: LTC3370IUH#PBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.12 | $3,060.00 |
| 1,000 | $5.5 | $5,500.00 |
Drop-in alternatives for LTC3370IUH#PBF β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
LTC3370IUH#TRPBF
β Drop-Inβ In Stock
$3.94 / Unit
View Datasheet βLTC3370IUH
β Drop-Inπ Reference alternative (not in catalog)
LTC3375EUK
β Drop-Inπ Reference alternative (not in catalog)
TPS65270RGER
β Drop-Inπ Reference alternative (not in catalog)
TPS65261RGER
β Drop-Inπ Reference alternative (not in catalog)
LTC3370IUH#PBF Maximum Ratings & Electrical Characteristics
| Output Type | Adjustable |
| Output Voltage Range | 0.8V to 5.5V |
| Number of Outputs | 4 |
| Maximum Output Current | 8A (total) |
| Input Voltage Range | 2.25V to 5.5V |
| Switching Frequency | 1MHz to 3MHz (programmable) |
| Synchronous Rectification | Yes |
| Package | 32-WFQFN Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40Β°C to +125Β°C (junction) |
| RoHS Status | Compliant |
| REACH Status | Compliant |
| MSL Level | [DATA_NEEDED: MSL Level] |
| Quiescent Current | [DATA_NEEDED: Quiescent Current] |
| Efficiency | [DATA_NEEDED: Efficiency] |
LTC3370IUH#PBF Pin Configuration
| Pin 1 | SW1 β Switch node for buck converter 1 |
| Pin 2 | SW1 β Switch node for buck converter 1 |
| Pin 3 | VIN1 β Input supply for buck converter 1 |
| Pin 4 | VIN1 β Input supply for buck converter 1 |
| Pin 5 | GND β Ground |
| Pin 6 | GND β Ground |
| Pin 7 | SW2 β Switch node for buck converter 2 |
| Pin 8 | SW2 β Switch node for buck converter 2 |
| Pin 9 | VIN2 β Input supply for buck converter 2 |
| Pin 10 | VIN2 β Input supply for buck converter 2 |
| Pin 11 | GND β Ground |
| Pin 12 | GND β Ground |
| Pin 13 | SW3 β Switch node for buck converter 3 |
| Pin 14 | SW3 β Switch node for buck converter 3 |
| Pin 15 | VIN3 β Input supply for buck converter 3 |
| Pin 16 | VIN3 β Input supply for buck converter 3 |
| Pin 17 | GND β Ground |
| Pin 18 | GND β Ground |
| Pin 19 | SW4 β Switch node for buck converter 4 |
| Pin 20 | SW4 β Switch node for buck converter 4 |
| Pin 21 | VIN4 β Input supply for buck converter 4 |
| Pin 22 | VIN4 β Input supply for buck converter 4 |
| Pin 23 | GND β Ground |
| Pin 24 | GND β Ground |
| Pin 25 | C1 β Configuration pin 1 |
| Pin 26 | C2 β Configuration pin 2 |
| Pin 27 | C3 β Configuration pin 3 |
| Pin 28 | RT β Switching frequency programming pin |
| Pin 29 | RUN β Enable pin for all converters |
| Pin 30 | VOUT1 β Output voltage sense for converter 1 |
| Pin 31 | VOUT2 β Output voltage sense for converter 2 |
| Pin 32 | VOUT3 β Output voltage sense for converter 3 |
| Pin 33 | VOUT4 β Output voltage sense for converter 4 |
| Pin 34 | GND β 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
LTC3370IUH#PBF is suitable for 6 applications: Portable Electronics, Industrial Equipment, Automotive Electronics, FPGA Power Supplies, Networking Equipment, Medical Devices.
Portable Electronics
The LTC3370IUH#PBF is ideal for portable devices like smartphones, tablets, and wearables, where multiple low-voltage rails are needed. Its 2.25V to 5.5V input range matches Li-ion battery voltages, and its high efficiency extends battery life. The configurable outputs allow powering a processor core, memory, and I/O from a single IC, saving board space. With up to 8A total current, it can handle demanding loads while maintaining small footprint.
Recommended
Industrial Equipment
In industrial automation and control systems, the LTC3370IUH#PBF provides multiple regulated rails for microcontrollers, sensors, and communication interfaces. Its wide operating temperature range (-40Β°C to +125Β°C) ensures reliability in harsh environments. The programmable switching frequency allows optimization for EMI and efficiency, which is critical in industrial settings. The device's robust protection features, including overcurrent and thermal shutdown, enhance system safety.
Recommended
Automotive Electronics
The LTC3370IUH#PBF is suitable for automotive applications such as infotainment systems, ADAS, and body control modules. It operates from a 5V supply derived from the car battery, providing multiple rails for processors, memory, and peripherals. The device's high efficiency reduces heat generation, which is crucial in enclosed automotive environments. Its small package and configurable outputs make it easy to integrate into space-constrained designs.
Recommended
FPGA Power Supplies
FPGAs require multiple voltage rails (core, I/O, auxiliary) with precise regulation and fast transient response. The LTC3370IUH#PBF can provide up to four outputs, each configurable to meet the current demands of different FPGA rails. Its high switching frequency allows the use of small inductors, reducing board space. The device's synchronous rectification ensures high efficiency, minimizing power loss and heat in dense FPGA designs.
Recommended
Networking Equipment
In networking devices like routers and switches, the LTC3370IUH#PBF provides multiple low-voltage rails for processors, memory, and PHY chips. Its input range of 2.25V to 5.5V is compatible with common 3.3V and 5V supplies. The configurable outputs allow efficient power distribution, and the high switching frequency reduces the size of external components, enabling compact designs. The device's reliability is essential for 24/7 operation.
Recommended
Medical Devices
The LTC3370IUH#PBF is used in medical devices such as patient monitors, diagnostic equipment, and portable medical instruments. It provides clean, regulated power for sensitive analog and digital circuits. Its low noise and high PSRR ensure minimal interference with medical measurements. The device's small size and high efficiency are beneficial for battery-powered portable medical devices, extending operational life.
Recommended
Recommended Products Summary
Engineering reference data for LTC3370IUH#PBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTC3370IUH#TRPBF | LTC3370IUH | LTC3375EUK | TPS65270RGER | TPS65261RGER |
|---|---|---|---|---|---|---|
| Package | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad | 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 | Texas Instruments | Texas Instruments |
| Number of Outputs | 4 | 4 | 4 | 4 | 2 | 3 |
| Maximum Output Current | 8A (total) | 8A (total) | 8A (total) | 8A (total) | 6A (total) | 6A (total) |
| Input Voltage Range | 2.25V to 5.5V | 2.25V to 5.5V | 2.25V to 5.5V | 2.25V to 5.5V | 4.5V to 18V | 4.5V to 18V |
| Switching Frequency | 1MHz to 3MHz (programmable) | 1MHz to 3MHz (programmable) | 1MHz to 3MHz (programmable) | 1MHz to 3MHz (programmable) | 300kHz to 1.4MHz | 300kHz to 1.4MHz |
| Synchronous Rectification | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature Range | -40Β°C to +125Β°C | -40Β°C to +125Β°C | -40Β°C to +125Β°C | -40Β°C to +125Β°C | -40Β°C to +125Β°C | -40Β°C to +125Β°C |
Key Differentiators
- Four configurable outputs with eight 1A power stages (vs TPS65270RGER)
- Wide input voltage range of 2.25V to 5.5V (vs TPS65261RGER)
- Programmable switching frequency up to 3MHz (vs TPS65270RGER)
Design Notes
For optimal thermal performance, solder the exposed pad of the 32-WFQFN package to a large copper area on the PCB. Use multiple vias to connect the pad to inner ground planes. This helps dissipate heat from the device, especially when operating at high output currents. Refer to the Analog Devices datasheet for recommended PCB layout guidelines.
Select input and output capacitors with low ESR and adequate voltage rating. For the LTC3370, a 10Β΅F ceramic capacitor on each input and output is typically sufficient. Place capacitors close to the IC pins to minimize parasitic inductance. The programmable switching frequency allows optimization of capacitor size and ripple performance.
Ensure the C1-C3 configuration pins are set correctly to achieve the desired output current distribution. Incorrect settings can lead to overloading a single output. Also, verify that the total output current does not exceed 8A. Use the RT pin to set the switching frequency within the specified range to avoid instability.
Compliance Information
RoHS compliant per part number suffix #PBF. REACH compliance indicated on distributor pages. Not AEC-Q100 qualified.
