My Inquiry
My Account
Analog Devices Inc. LTC3315AMPV#TRMPBF
- Part No.:
- LTC3315AMPV#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3315AMPV#TRMPBF.pdf
- Description:
- IC REG BUCK 0.5V 2A DL 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:736
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3315AMPV#TRMPBF from Analog Devices is a dual-channel monolithic synchronous step-down DC/DC converter delivering 2A per channel from a 2.25V–5.5V input, operating at 2MHz fixed frequency with 25ns minimum on-time and ±1% output voltage accuracy. It integrates two independent buck regulators in a single 2mm × 2mm LQFN package with precision enable thresholds (400mV), PGOOD, overvoltage protection, and thermal shutdown-designed for FPGA core supplies and space-constrained POL applications.
For engineers reviewing the LTC3315AMPV#TRMPBF datasheet, LTC3315AMPV#TRMPBF pinout, LTC3315AMPV#TRMPBF application, or LTC3315AMPV#TRMPBF equivalent, key selection criteria include its –55°C to 150°C extended temperature grade, dual-phase 180° out-of-phase switching, forced continuous/pulse-skipping/Burst Mode® operation, and support for external synchronization from 1MHz to 3MHz.
Technical Context
The LTC3315AMPV#TRMPBF implements peak current mode control with internal compensation and dual independent feedback loops (FB1/FB2), each regulating to 500mV reference. Its 180° phase interleaving reduces input ripple and eases EMI filtering requirements while maintaining high efficiency across load ranges.
It features integrated 19mΩ NMOS and 75mΩ PMOS power switches, supports up to 100% duty cycle for low-dropout operation, and includes robust protection: output short-circuit, overtemperature (165°C shutdown), output overvoltage (110% VOUT), and safe handling of inductor saturation during overload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - supports single-cell Li-ion, USB PD, and intermediate bus rails without pre-regulation. |
| VOUT Range | 0.5V to VIN - enables direct regulation down to sub-1V FPGA/ASIC core voltages. |
| Output Accuracy | ±1% - ensures stable logic supply margins under line/load/temperature variation. |
| Switching Frequency | 2MHz (default), synchronizable 1–3MHz - enables compact 880nH inductors and low-profile ceramic capacitors. |
| Min On-Time | 25ns - allows high step-down ratios (e.g., 5.5V→0.8V at 2MHz) without pulse skipping. |
| Quiescent Current | 1.2µA in shutdown - preserves battery life in always-on systems. |
| Enable Threshold | 400mV rising - enables precise power sequencing via resistor dividers from upstream rails. |
Pinout & Package
Package: 12-lead 2mm × 2mm × 0.74mm LQFN with exposed thermal pad (Pin 13 = GND). Thermally enhanced for high-power density operation in industrial and automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 / EN2 | Independent enable inputs | Active-high with 400mV precision threshold; supports event-driven sequencing of dual outputs. |
| FB1 / FB2 | Feedback inputs | Regulate to 500mV reference; connect to resistor divider mid-point for programmable VOUT. |
| SW1 / SW2 | Switch nodes | Connect to external inductors; pins 6 & 11 are paralleled internally (C1/C2 and C3/C4 balls) for low-inductance routing. |
| VIN (Pins 7,10) | Input supply | Dual VIN pins reduce IR drop and improve high-current delivery to internal PMOS switches. |
| GND (Pins 8,9,13) | Ground terminals | Exposed pad (Pin 13) must be soldered to PCB ground plane for θJB = 12°C/W thermal performance. |
| PGOOD | Open-drain status output | Asserts low if either enabled output falls below 98% or rises above 110% of target VOUT. |
| MODE/SYNC | Mode control & sync input | Selects Burst Mode® (VIN), pulse-skip (GND), or forced continuous (floating); accepts 1–3MHz external clock. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 2A synchronous bucks | Enables compact dual-rail power for SoC+FPGA or dual-core processors without discrete controllers. |
| 180° phase interleaving | Halves input RMS current and reduces required bulk capacitance by ~30% vs. in-phase operation. |
| Burst Mode® operation | Achieves >85% efficiency at 1mA load while maintaining <10mVpp output ripple for ultra-low-power standby. |
| Internal soft-start | Controls inrush current with 0.25–3ms ramp time; prevents system brownout during power-up. |
| AEC-Q100 qualified | Rated for –55°C to 150°C junction temperature - validated for under-hood automotive and harsh industrial use. |
Applications
| FPGA Core Supply | Automotive ADAS Processor |
|---|---|
Use Scenario: Powering Xilinx Artix-7 or Intel Cyclone V FPGA core (0.85–1.2V) and auxiliary I/O banks (1.8V, 2.5V) from a 3.3V or 5V intermediate rail. IC Role / Device Role / Timing Role: Dual-output buck regulator providing tightly regulated, low-noise, sequenced core and I/O voltages with PGOOD monitoring. Use Value: Eliminates need for two discrete converters; 25ns min-on-time supports 5.5V→0.8V conversion at 2MHz for minimal BOM size. | Use Scenario: Supplying NVIDIA DRIVE Orin SoC core (0.75V) and memory interface (1.1V) in radar/ECS modules operating at –40°C to 125°C ambient. IC Role / Device Role / Timing Role: High-reliability dual-buck regulator with AEC-Q100 Grade 1 qualification and extended –55°C startup capability. Use Value: –55°C to 150°C rating ensures cold-cranking functionality; PGOOD and overvoltage protection meet ISO 26262 ASIL-B requirements. |
| Industrial PLC CPU Module | Optical Network Line Card |
Use Scenario: Generating 1.2V CPU core and 3.3V I/O rails from a 5V backplane in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Compact dual-buck regulator with forced continuous mode for low EMI and stable 1.2V/3.3V outputs under dynamic load steps. Use Value: 180° interleaving reduces input capacitor stress; thermal shutdown and short-circuit protection ensure field reliability. | Use Scenario: Providing 1.8V transceiver bias and 2.5V DSP core supplies in SFP+ and QSFP28 modules with strict thermal limits. IC Role / Device Role / Timing Role: High-efficiency dual buck supporting Burst Mode® for low-idle power and 2MHz switching for small 0402 inductors. Use Value: 70% efficiency at 10mA load extends module uptime; MODE/SYNC pin enables synchronization to system clock for jitter reduction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3315AEV#TRMPBF | Same silicon, rated for –40°C to 125°C junction temperature; lower max operating temp than LTC3315AMPV#TRMPBF. | Suitable for commercial/industrial environments without extended cold-start or high-ambient requirements. | Select when full –55°C operation is unnecessary and cost optimization is prioritized. |
| TPS6521905RGER | TI dual 2A buck with 2.7–5.5V VIN, 0.6–3.6V VOUT, but no Burst Mode®; higher quiescent current (12µA shutdown). | Lacks low-IQ sleep mode and extended temperature range; not AEC-Q100 qualified. | Choose only for non-automotive designs where Analog Devices' low-noise Burst Mode® is not required. |
Compared with LTC3315AEV#TRMPBF, the LTC3315AMPV#TRMPBF adds –55°C cold-start capability and 150°C max junction rating for mission-critical automotive use; versus TPS6521905RGER, it delivers superior light-load efficiency, tighter output accuracy, and integrated AEC-Q100 compliance without external sequencing logic.
Availability
LTC3315AMPV#TRMPBF is available at Aetrix Electronics and suitable for FPGA core supplies, automotive ADAS processors, and industrial PLC CPU modules requiring stable component supply with extended temperature resilience and long-term lifecycle support.
Supply support for LTC3315AMPV#TRMPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3315A product line delivers highly integrated, thermally robust dual-output DC/DC regulators targeting space-constrained, high-reliability power delivery in automotive ADAS, optical networking, and FPGA-based computing systems.
FAQ
What is the operating temperature range of the LTC3315AMPV#TRMPBF?
The LTC3315AMPV#TRMPBF is specified for a junction temperature range of –55°C to 150°C, making it suitable for extreme environments such as automotive under-hood applications and industrial equipment exposed to wide ambient swings. This extended rating exceeds standard industrial grades and aligns with AEC-Q100 Grade 1 requirements.
How does the MODE/SYNC pin configure operating modes on the LTC3315AMPV#TRMPBF?
The MODE/SYNC pin on the LTC3315AMPV#TRMPBF selects between three modes: tie to GND for pulse-skipping, float for forced continuous conduction, or connect to VIN for Burst Mode® operation. When driven by an external 1–3MHz clock, it synchronizes both bucks in forced continuous mode with 180° phase offset-enabling EMI reduction and system-level timing alignment.
Can the LTC3315AMPV#TRMPBF regulate outputs below 1V?
Yes, the LTC3315AMPV#TRMPBF regulates outputs as low as 0.5V using external resistor dividers on FB1 and FB2 pins, with feedback accuracy maintained at ±1% over temperature and line. Its 500mV internal reference and 25ns minimum on-time support stable 0.5V–0.8V core supplies for advanced SoCs and FPGAs.
What protection features are integrated into the LTC3315AMPV#TRMPBF?
The LTC3315AMPV#TRMPBF integrates output overvoltage protection (110% VOUT), output short-circuit protection, thermal shutdown (165°C), and safe inductor saturation handling. It also provides PGOOD monitoring for both channels and supports up to 100% duty cycle for low-dropout operation-ensuring robustness in fault conditions without external components.
Is the LTC3315AMPV#TRMPBF pin-compatible with other variants in the LTC3315A family?
Yes, all LTC3315A variants-including LTC3315AMPV#TRMPBF, LTC3315AEV#TRMPBF, and LTC3315AJV#TRMPBF-share identical 12-lead 2mm × 2mm LQFN packaging and pinout. The differences lie solely in temperature grading and MSL rating; no PCB layout changes are needed when upgrading from AE to AM grade for extended environmental coverage.
LTC3315AMPV#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.25V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 1MHz ~ 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3315AMPV#TRMPBF FAQ
1.How can I place an order for LTC3315AMPV#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3315AMPV#TRMPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC3315AMPV#TRMPBF reliable?
The price and inventory of LTC3315AMPV#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3315AMPV#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3315AMPV#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3315AMPV#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3315AMPV#TRMPBF?
LTC3315AMPV#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3315AMPV#TRMPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC3315AMPV#TRMPBF?
For technical support, including LTC3315AMPV#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3315AMPV#TRMPBF requirements.
6.How does Aetrix verify that LTC3315AMPV#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3315AMPV#TRMPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC3315AMPV#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3315AMPV#TRMPBF?
All LTC3315AMPV#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3315AMPV#TRMPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC3315AMPV#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3315AMPV#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3315AMPV#TRMPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
