LTC3370MPUH#TRPBF - 4-Ch 8A Configurable Buck | Analog Devices
料号： LTC3370MPUH#TRPBF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 |
LTC3370MPUH#TRPBF 概述
A multioutput buck converter is a type of DC-DC switching regulator that integrates multiple step-down channels in a single package, allowing designers to generate several regulated voltage rails from a common input supply. This category sits within the broader hierarchy of power management ICs, which include linear regulators, charge pumps, and other switching converters. The LTC3370's configurable architecture enables it to replace multiple discrete regulators, reducing board space and component count.
Key features include a wide input voltage range of 2.25V to 5.5V, eight 1A power stages that can be combined for higher current, and a programmable switching frequency set by an external resistor. The device also offers independent enable pins for each channel, soft-start, and overcurrent protection. Its 32-lead WFQFN package with exposed pad ensures excellent thermal performance, and the MP suffix indicates a -40°C to 125°C operating junction temperature range, suitable for industrial and automotive environments.
The LTC3370 uses a current-mode, constant-frequency architecture with internal synchronous switches, achieving high efficiency across a wide load range. The configurable power stage assignment allows designers to optimize the number of channels and current capability for their specific application, reducing power loss and improving transient response. The device also includes a low quiescent current mode for light-load efficiency.
Typical applications include point-of-load regulation in FPGA, DSP, and ASIC power supplies, as well as battery-powered portable devices, industrial instrumentation, and automotive infotainment systems. The flexible configuration and high integration make it an excellent choice for multi-rail systems where PCB space is at a premium.
When designing with the LTC3370, ensure proper decoupling on each input supply and place the external frequency-setting resistor close to the RT pin. The exposed pad should be soldered to a large copper area for optimal heat dissipation, especially when operating at high output currents.
直接替换替代料： LTC3370MPUH#TRPBF ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LTC3370MPUH#TRPBF （相同外形与封装尺寸） ——差异在于 Package, Maximum Output Current, Operating Temperature Range, Output Voltage Range, Switching Frequency.
快速对比工具——选择替代料号进行并排对比：
LTC3370EUH#TRPBF
✅ 直接替换✓ 有现货
$3.92 / 个
查看数据手册 →LTC3370IUH#TRPBF
✅ 直接替换✓ 有现货
$3.94 / 个
查看数据手册 →LTC3370EUH#PBF
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$7.15 / 个
查看数据手册 →LTC3370IUH#PBF
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.5 / 个
查看数据手册 →LTC3370MPUH#PBF
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.5 / 个
查看数据手册 →LTC3370MPUH#TRPBF 最大额定值与电气特性
| 输出类型 | Adjustable |
| 输出数量 | 4 |
| 输出电压范围 | 0.8V to 5V (per channel) |
| 最大输出电流 | 4A per channel (configurable) |
| 输入电压范围 | 2.25V to 5.5V |
| 开关频率 | Programmable via external resistor |
| Number of Power Stages | 8 x 1A |
| Configurations | 8 unique output configurations |
| 工作结温 | -40°C to 125°C |
| 封装 | 32-WFQFN Exposed Pad (UH) |
| 安装类型 | Surface Mount |
| 同步整流 | Yes |
| RoHS 状态 | Compliant |
LTC3370MPUH#TRPBF 引脚配置
| 引脚 1 | SW1 — Switch node for channel 1 |
| 引脚 2 | PVIN1 — Power input for channel 1 |
| 引脚 3 | VIN1 — Analog input for channel 1 |
| 引脚 4 | RUN1 — Enable for channel 1 |
| 引脚 5 | C1 — Configuration pin 1 |
| 引脚 6 | C2 — Configuration pin 2 |
| 引脚 7 | C3 — Configuration pin 3 |
| 引脚 8 | RT — Switching frequency set resistor |
| 引脚 9 | GND — Ground |
| 引脚 10 | VOUT1 — Output voltage sense for channel 1 |
| 引脚 11 | FB1 — Feedback for channel 1 |
| 引脚 12 | VOUT2 — Output voltage sense for channel 2 |
| 引脚 13 | FB2 — Feedback for channel 2 |
| 引脚 14 | VOUT3 — Output voltage sense for channel 3 |
| 引脚 15 | FB3 — Feedback for channel 3 |
| 引脚 16 | VOUT4 — Output voltage sense for channel 4 |
| 引脚 17 | FB4 — Feedback for channel 4 |
| 引脚 18 | RUN2 — Enable for channel 2 |
| 引脚 19 | RUN3 — Enable for channel 3 |
| 引脚 20 | RUN4 — Enable for channel 4 |
| 引脚 21 | VIN2 — Analog input for channel 2 |
| 引脚 22 | PVIN2 — Power input for channel 2 |
| 引脚 23 | SW2 — Switch node for channel 2 |
| 引脚 24 | SW3 — Switch node for channel 3 |
| 引脚 25 | PVIN3 — Power input for channel 3 |
| 引脚 26 | VIN3 — Analog input for channel 3 |
| 引脚 27 | SW4 — Switch node for channel 4 |
| 引脚 28 | PVIN4 — Power input for channel 4 |
| 引脚 29 | VIN4 — Analog input for channel 4 |
| 引脚 30 | MODE — Mode selection (light load operation) |
| 引脚 31 | PLLIN — External clock synchronization input |
| 引脚 32 | EXTVCC — External bias supply input |
| 引脚 33 | GND — Exposed pad, ground |
典型应用
LTC3370MPUH#TRPBF 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： LTC3370MPUH#TRPBF ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Extended temperature range (-40°C to 125°C) （对比 LTC3370EUH#TRPBF)
- Configurable power stages (8 x 1A) （对比 LTC3370EUH#TRPBF)
- Pin-programmable configurations （对比 LTC3370EUH#TRPBF)
设计说明
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.
合规信息
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free per datasheet.
