LTC3370MPUH#PBF - 4-Ch 8A Configurable Buck | Analog Devices
MPN: LTC3370MPUH#PBF ✓ פעילLTC3370MPUH#PBF סקירה
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.
חלופות תחליף ישיר עבור LTC3370MPUH#PBF — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם LTC3370MPUH#PBF (אותו גורם צורה וטביעת רגל) — שונים ב Maximum Output Current, Package, Operating Temperature Range, Output Voltage Range, Switching Frequency.
LTC3370IUH#PBF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC3370EUH#PBF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←TPS65251RHAR
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
TPS65254RHAR
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
TPS65253RHAR
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
LTC3370MPUH#PBF דירוגים מרביים ומאפיינים חשמליים
| סוג פלט | Adjustable |
| טווח מתח פלט | 0.8V to 5.5V |
| זרם מוצא מקסימלי | 8A (total, configurable up to 4A per channel) |
| טווח מתח כניסה | 2.25V to 5.5V |
| מספר יציאות | 4 |
| תדר מיתוג | Programmable via external resistor |
| יישור סינכרוני | Yes |
| טווח טמפרטורת פעולה | -40°C to 125°C (junction) |
| מארז | 32-WFQFN Exposed Pad |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant |
| REACH Status | Compliant |
| Control Architecture | Current Mode |
תצורת פינים של LTC3370MPUH#PBF
| פין 1 | SW1 — Switch node for buck 1 |
| פין 2 | VIN1 — Input supply for buck 1 |
| פין 3 | GND — Ground |
| פין 4 | SW2 — Switch node for buck 2 |
| פין 5 | VIN2 — Input supply for buck 2 |
| פין 6 | GND — Ground |
| פין 7 | SW3 — Switch node for buck 3 |
| פין 8 | VIN3 — Input supply for buck 3 |
| פין 9 | GND — Ground |
| פין 10 | SW4 — Switch node for buck 4 |
| פין 11 | VIN4 — Input supply for buck 4 |
| פין 12 | GND — Ground |
| פין 13 | C1 — Configuration pin 1 |
| פין 14 | C2 — Configuration pin 2 |
| פין 15 | C3 — Configuration pin 3 |
| פין 16 | RT — Switching frequency programming |
| פין 17 | RUN — Enable control |
| פין 18 | VOUT1 — Output voltage sense for buck 1 |
| פין 19 | VOUT2 — Output voltage sense for buck 2 |
| פין 20 | VOUT3 — Output voltage sense for buck 3 |
| פין 21 | VOUT4 — Output voltage sense for buck 4 |
| פין 22 | FB1 — Feedback for buck 1 |
| פין 23 | FB2 — Feedback for buck 2 |
| פין 24 | FB3 — Feedback for buck 3 |
| פין 25 | FB4 — Feedback for buck 4 |
| פין 26 | GND — Ground |
| פין 27 | GND — Ground |
| פין 28 | GND — Ground |
| פין 29 | GND — Ground |
| פין 30 | GND — Ground |
| פין 31 | GND — Ground |
| פין 32 | GND — Ground |
יישומים טיפוסיים
LTC3370MPUH#PBF מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור LTC3370MPUH#PBF — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Higher temperature grade (M) for -40°C to 125°C operation (לעומתLTC3370IUH#PBF)
- Configurable 8A total output with up to 4A per channel (לעומתTPS65251RHAR)
- Wide input voltage range of 2.25V to 5.5V (לעומתTPS65251RHAR)
הערות תכנון
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.
מידע על תאימות
RoHS and REACH compliant per Analog Devices. Not AEC-Q100 qualified.
