LTC3370MPUH#PBF - 4-Ch 8A Configurable Buck | Analog Devices
N.º da peça: LTC3370MPUH#PBF ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 |
LTC3370MPUH#PBF Visão geral
A multioutput buck converter is a type of DC-DC switching regulator that provides multiple regulated output voltages from a single input supply. It belongs to the broader category of power management ICs, which manage power distribution and conversion in electronic systems. By integrating multiple converters on one chip, it reduces component count, board area, and cost compared to discrete solutions.
Key features include a wide input voltage range of 2.25V to 5.5V, adjustable output voltage down to 0.8V, and a common switching frequency programmable via an external resistor. The device achieves high efficiency through synchronous rectification and offers low total no-load supply current, making it suitable for battery-powered applications. Its flexible configuration allows designers to allocate power stages dynamically to meet varying load requirements.
Technically, the LTC3370 uses a current-mode control architecture with internal compensation, ensuring stable operation across a wide range of output capacitors. The eight power stages can be combined in various parallel configurations to deliver higher current to a single output or distributed across multiple outputs. The pin-programmable C1-C3 pins simplify configuration without external components, reducing design complexity.
Typical applications include portable devices, industrial equipment, and automotive systems where multiple low-voltage rails are needed. For example, it can power an FPGA core, I/O, and auxiliary circuits from a single 5V supply. Its high efficiency and low quiescent current extend battery life in handheld devices.
When designing with this device, ensure proper input and output capacitor selection to maintain stability and minimize ripple. The exposed pad must be soldered to a large copper area for adequate thermal dissipation, especially at high output currents.
Alternativas drop-in para LTC3370MPUH#PBF — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com LTC3370MPUH#PBF (mesmo formato e footprint) — diferindo em Maximum Output Current, Package, Operating Temperature Range, Output Voltage Range, Switching Frequency.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
LTC3370IUH#PBF
✅ Drop-In✓ Em estoque
$5.5 / unidade
Ver ficha técnica →LTC3370EUH#PBF
✅ Drop-In✓ Em estoque
$7.15 / unidade
Ver ficha técnica →TPS65251RHAR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TPS65254RHAR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TPS65253RHAR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
LTC3370MPUH#PBF Classificações máximas e características elétricas
| Tipo de saída | Adjustable |
| Faixa de tensão de saída | 0.8V to 5.5V |
| Corrente máxima de saída | 8A (total, configurable up to 4A per channel) |
| Faixa de tensão de entrada | 2.25V to 5.5V |
| Número de saídas | 4 |
| Frequência de comutação | Programmable via external resistor |
| Retificação síncrona | Yes |
| Faixa de temperatura de operação | -40°C to 125°C (junction) |
| Encapsulamento | 32-WFQFN Exposed Pad |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| REACH Status | Compliant |
| Control Architecture | Current Mode |
Configuração de pinos do LTC3370MPUH#PBF
| Pino 1 | SW1 — Switch node for buck 1 |
| Pino 2 | VIN1 — Input supply for buck 1 |
| Pino 3 | GND — Ground |
| Pino 4 | SW2 — Switch node for buck 2 |
| Pino 5 | VIN2 — Input supply for buck 2 |
| Pino 6 | GND — Ground |
| Pino 7 | SW3 — Switch node for buck 3 |
| Pino 8 | VIN3 — Input supply for buck 3 |
| Pino 9 | GND — Ground |
| Pino 10 | SW4 — Switch node for buck 4 |
| Pino 11 | VIN4 — Input supply for buck 4 |
| Pino 12 | GND — Ground |
| Pino 13 | C1 — Configuration pin 1 |
| Pino 14 | C2 — Configuration pin 2 |
| Pino 15 | C3 — Configuration pin 3 |
| Pino 16 | RT — Switching frequency programming |
| Pino 17 | RUN — Enable control |
| Pino 18 | VOUT1 — Output voltage sense for buck 1 |
| Pino 19 | VOUT2 — Output voltage sense for buck 2 |
| Pino 20 | VOUT3 — Output voltage sense for buck 3 |
| Pino 21 | VOUT4 — Output voltage sense for buck 4 |
| Pino 22 | FB1 — Feedback for buck 1 |
| Pino 23 | FB2 — Feedback for buck 2 |
| Pino 24 | FB3 — Feedback for buck 3 |
| Pino 25 | FB4 — Feedback for buck 4 |
| Pino 26 | GND — Ground |
| Pino 27 | GND — Ground |
| Pino 28 | GND — Ground |
| Pino 29 | GND — Ground |
| Pino 30 | GND — Ground |
| Pino 31 | GND — Ground |
| Pino 32 | GND — Ground |
Aplicações típicas
LTC3370MPUH#PBF é adequado para 6 aplicaçãos: FPGA Power Supply, Portable Devices, Industrial Automation, Automotive Electronics, Networking Equipment, Medical Devices.
FPGA Power Supply
The LTC3370MPUH#PBF provides multiple low-voltage rails (e.g., 1.0V core, 1.8V I/O, 2.5V auxiliary) from a single 5V input. Its configurable power stages allow up to 4A per channel, meeting the dynamic current demands of FPGAs. The high efficiency and low noise help maintain signal integrity in high-speed designs.
Recomendado
Portable Devices
In battery-powered portable devices, the LTC3370MPUH#PBF efficiently converts battery voltage (2.25V-5.5V) to multiple regulated rails for processors, memory, and peripherals. Its low no-load supply current extends standby time, while the small 32-WFQFN package saves board space. The configurable outputs allow optimization for different operating modes.
Recomendado
Industrial Automation
The LTC3370MPUH#PBF is suitable for industrial control systems requiring multiple stable voltage rails from a 5V supply. Its wide temperature range (-40°C to 125°C) ensures reliable operation in harsh environments. The synchronous buck converters provide high efficiency, reducing heat dissipation in sealed enclosures.
Recomendado
Automotive Electronics
For automotive applications, the LTC3370MPUH#PBF can power infotainment systems, ADAS processors, and sensors from a 5V rail. Its high temperature grade supports under-hood environments. However, it is not AEC-Q100 qualified, so for strict automotive compliance, consider alternatives with certification.
Recomendado
Networking Equipment
In networking equipment like routers and switches, the LTC3370MPUH#PBF provides multiple rails for SoCs, PHYs, and memory. Its configurable outputs allow flexible power allocation, and the high efficiency reduces cooling requirements. The small package is ideal for dense PCB layouts.
Recomendado
Medical Devices
The LTC3370MPUH#PBF is used in medical devices requiring multiple low-noise voltage rails, such as patient monitors and diagnostic equipment. Its low output ripple and high efficiency are critical for sensitive analog circuits. The wide temperature range ensures reliable operation in clinical environments.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para LTC3370MPUH#PBF — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | LTC3370IUH#PBF | LTC3370EUH#PBF | TPS65251RHAR |
|---|---|---|---|---|
| Package | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Input Voltage Range | 2.25V to 5.5V | 2.25V to 5.5V | 2.25V to 5.5V | 4.5V to 18V |
| Output Current (Total) | 8A | 8A | 8A | 3A |
| Number of Outputs | 4 | 4 | 4 | 3 |
| Output Voltage Range | 0.8V to 5.5V | 0.8V to 5.5V | 0.8V to 5.5V | 0.8V to 5.5V |
| Switching Frequency | Programmable | Programmable | Programmable | Fixed 500kHz |
| Operating Temperature Range | -40°C to 125°C | -40°C to 85°C | 0°C to 85°C | -40°C to 125°C |
Principais diferenciais
- Higher temperature grade (M) for -40°C to 125°C operation (vs LTC3370IUH#PBF)
- Configurable 8A total output with up to 4A per channel (vs TPS65251RHAR)
- Wide input voltage range of 2.25V to 5.5V (vs TPS65251RHAR)
Notas de projeto
Place input and output capacitors close to the IC pins to minimize parasitic inductance. Use low-ESR ceramic capacitors (e.g., 10uF) for each input and output. The exposed pad must be soldered to a large copper area for thermal dissipation and electrical grounding.
At high output currents, the power dissipation can be significant. Calculate the junction temperature using the package thermal resistance (theta_JA) and ensure it stays below 125°C. Use multiple vias under the exposed pad to conduct heat to the PCB ground plane.
Ensure the C1-C3 pins are set correctly for the desired output configuration. Incorrect settings can lead to improper current sharing. Also, verify the switching frequency programming resistor value to avoid instability or excessive ripple.
Informações de conformidade
RoHS and REACH compliant per Analog Devices. Not AEC-Q100 qualified.
