LTC3370EUH#TRPBF - 4-Ch 8A Configurable Buck DC/DC | Analog Devices
MPN: LTC3370EUH#TRPBF ✓ نشطLTC3370EUH#TRPBF نظرة عامة
A configurable buck converter is a type of DC-DC step-down regulator that uses multiple internal power stages that can be combined to deliver higher current on fewer outputs. In the hierarchy of power management ICs, it sits above fixed-output regulators, offering flexibility in output count and current allocation. The LTC3370's architecture allows one to four outputs, each with up to 8A total, making it a versatile building block for systems requiring multiple low-voltage rails.
Key features include four synchronous buck converters with up to 8A total output current, 2.25V to 5.5V input range, adjustable output voltage down to 0.8V, and pin-configurable output current sharing. The device achieves high efficiency (up to 95%) by integrating low RDS(ON) switches and supports Burst Mode operation for light-load efficiency. It also includes soft-start, short-circuit protection, and thermal shutdown.
Technically, the LTC3370 uses a current-mode control architecture with a programmable switching frequency from 1MHz to 3MHz, allowing designers to trade off efficiency vs. component size. The C1-C3 pins set the configuration, and the MODE/SYNC pin allows external synchronization or Burst Mode. The device is available in a 32-lead WFQFN package with exposed pad for thermal management.
Typical applications include solid-state drives, FPGA/ASIC power supplies, optical modules, and industrial equipment where multiple low-voltage rails are needed. Its wide input range and high efficiency make it suitable for battery-powered devices and point-of-load regulation.
When designing with the LTC3370, ensure proper decoupling with 10µF ceramic capacitors on each input and output, and use the exposed pad for heat sinking. The switching frequency should be chosen to optimize efficiency and component size, and the C1-C3 pins must be set correctly for the desired output configuration.
بدائل مباشرة لـ LTC3370EUH#TRPBF — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع LTC3370EUH#TRPBF (نفس عامل الشكل والبصمة) — يختلف في Package, Output Voltage Range, Switching Frequency, Maximum Output Current, Operating Temperature Range.
LTC3370EUH#PBF
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←LTC3370EUH
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
LTC3370IUKG#TRPBF
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
TPS65270
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
TPS65270
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
LTC3370EUH#TRPBF الحدود القصوى والخصائص الكهربائية
| الوظيفة | Step-Down (Buck) |
| تكوين الخرج | Positive, Adjustable |
| البنية الطوبولوجية | Synchronous Buck |
| عدد المخارج | 4 |
| Output Current per Channel | 2A (max, configurable) |
| Total Output Current | 8A |
| نطاق جهد الدخل | 2.25V to 5.5V |
| نطاق جهد الخرج | 0.8V to 5.5V |
| تردد التبديل | 1MHz to 3MHz (programmable) |
| مقوّم متزامن | Yes |
| Control Architecture | Current Mode |
| العلبة | 32-WFQFN Exposed Pad (5mm x 5mm) |
| نطاق درجة حرارة التشغيل | -40°C to 125°C (junction) |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
تكوين أطراف LTC3370EUH#TRPBF
| دبوس 1 | SW1 — Switch node for buck 1 |
| دبوس 2 | PVIN1 — Power input for buck 1 |
| دبوس 3 | PVIN2 — Power input for buck 2 |
| دبوس 4 | SW2 — Switch node for buck 2 |
| دبوس 5 | GND — Ground |
| دبوس 6 | SW3 — Switch node for buck 3 |
| دبوس 7 | PVIN3 — Power input for buck 3 |
| دبوس 8 | PVIN4 — Power input for buck 4 |
| دبوس 9 | SW4 — Switch node for buck 4 |
| دبوس 10 | GND — Ground |
| دبوس 11 | C1 — Configuration pin 1 |
| دبوس 12 | C2 — Configuration pin 2 |
| دبوس 13 | C3 — Configuration pin 3 |
| دبوس 14 | MODE/SYNC — Mode select / external sync |
| دبوس 15 | RT — Switching frequency set resistor |
| دبوس 16 | RUN — Enable (active high) |
| دبوس 17 | VIN — Input supply |
| دبوس 18 | VOUT1 — Output voltage sense for buck 1 |
| دبوس 19 | VOUT2 — Output voltage sense for buck 2 |
| دبوس 20 | VOUT3 — Output voltage sense for buck 3 |
| دبوس 21 | VOUT4 — Output voltage sense for buck 4 |
| دبوس 22 | FB1 — Feedback for buck 1 |
| دبوس 23 | FB2 — Feedback for buck 2 |
| دبوس 24 | FB3 — Feedback for buck 3 |
| دبوس 25 | FB4 — Feedback for buck 4 |
| دبوس 26 | SS — Soft-start |
| دبوس 27 | PGOOD — Power good indicator |
| دبوس 28 | GND — Ground |
| دبوس 29 | GND — Ground |
| دبوس 30 | GND — Ground |
| دبوس 31 | GND — Ground |
| دبوس 32 | GND — Ground |
التطبيقات النموذجية
LTC3370EUH#TRPBF مناسب لـ 6 التطبيقs: FPGA/ASIC Power Supplies, Solid-State Drives (SSD), Optical Modules, Industrial Equipment, Battery-Powered Devices, Point-of-Load (POL) Regulation.
FPGA/ASIC Power Supplies
The LTC3370EUH#TRPBF provides multiple configurable output rails (e.g., 1.0V core, 1.8V I/O, 2.5V auxiliary) from a single IC. Its 8A total current and adjustable outputs meet the sequencing and accuracy requirements of FPGAs. The high efficiency and small footprint reduce board space and thermal stress, making it ideal for compact designs.
موصى به
Solid-State Drives (SSD)
In SSDs, the LTC3370EUH#TRPBF powers the controller, NAND flash, and DRAM with separate low-voltage rails. Its 2.25V to 5.5V input range suits 3.3V or 5V supplies, and the configurable outputs allow optimal current allocation. The high efficiency extends battery life in portable SSDs, and the small package fits M.2 form factors.
موصى به
Optical Modules
The LTC3370EUH#TRPBF is used in optical transceivers to generate multiple low-noise rails for laser drivers, TIA, and digital control. Its low output ripple and high PSRR ensure clean power for sensitive analog circuits. The programmable switching frequency allows optimization for EMI, and the small package fits QSFP modules.
موصى به
Industrial Equipment
In industrial systems, the LTC3370EUH#TRPBF provides multiple rails for microcontrollers, sensors, and communication interfaces. Its wide input range (2.25V to 5.5V) accommodates 3.3V and 5V buses, and the -40°C to 125°C temperature range ensures reliability in harsh environments. The configurable outputs simplify power tree design.
موصى به
Battery-Powered Devices
The LTC3370EUH#TRPBF is ideal for battery-powered devices like portable instruments and IoT nodes. Its high efficiency (up to 95%) and Burst Mode operation extend battery life. The 2.25V to 5.5V input range supports single-cell Li-Ion or 3.3V/5V rails, and the small package minimizes PCB area.
موصى به
Point-of-Load (POL) Regulation
The LTC3370EUH#TRPBF serves as a POL regulator for digital ICs, providing local, low-noise supply rails close to the load. Its high efficiency reduces heat, and the programmable frequency allows optimization for efficiency or size. The multiple outputs can replace several discrete regulators, saving board space and cost.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ LTC3370EUH#TRPBF — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | LTC3370EUH#PBF | LTC3370EUH | LTC3370IUKG#TRPBF | TPS65270 |
|---|---|---|---|---|---|
| Package | 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 |
| Number of Outputs | 4 | 4 | 4 | 4 | 2 |
| Total Output Current | 8A | 8A | 8A | 8A | 6A |
| 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 |
| Switching Frequency | 1MHz to 3MHz | 1MHz to 3MHz | 1MHz to 3MHz | 1MHz to 3MHz | 300kHz to 2.2MHz |
| Operating Temperature Range | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C |
| Control Architecture | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode |
أبرز الفروقات
- Four configurable outputs with up to 8A total current (مقابلTPS65270)
- Wide input voltage range (2.25V to 5.5V) (مقابلTPS65270)
- Pin-programmable configuration (مقابلTPS65270)
ملاحظات التصميم
Place input and output capacitors close to the IC pins to minimize parasitic inductance. Use 10µF ceramic capacitors for each PVIN and VOUT. The exposed pad must be soldered to a large copper area for thermal dissipation. Follow the layout guidelines in the datasheet for optimal performance.
The LTC3370EUH#TRPBF can dissipate significant power at high output currents. Ensure adequate copper area on the PCB for heat sinking. The thermal resistance from junction to ambient (θJA) is typically 30°C/W with proper layout. For high ambient temperatures, consider airflow or a heatsink.
Set the C1-C3 pins correctly for the desired output configuration. Incorrect settings can lead to improper current sharing or output voltage errors. Also, ensure the RT resistor is within the specified range to set the switching frequency correctly. Do not leave the RUN pin floating; tie it to VIN if always enabled.
معلومات الامتثال
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free packaging.
