My Inquiry
My Account
Analog Devices Inc. LTC3315BIV#TRPBF
- Part No.:
- LTC3315BIV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3315BIV#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 2A/2A DL 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,458
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3315BIV#TRPBF 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, regulating outputs as low as 0.5V with ±1% feedback accuracy and 6MHz switching frequency in a thermally enhanced 2mm × 2mm LQFN-12 package. It integrates two independent 2A buck regulators with shared oscillator, 180° phase interleaving, and precision enable thresholds for FPGA core supplies and POL applications.
For engineers reviewing the LTC3315BIV#TRPBF datasheet, LTC3315BIV#TRPBF pinout, LTC3315BIV#TRPBF application, or LTC3315BIV#TRPBF equivalent, key selection criteria include its 25ns minimum on-time, 19mΩ NMOS / 75mΩ PMOS RDS(ON), Burst Mode® operation for <1.2µA shutdown current, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The LTC3315BIV#TRPBF employs peak current mode control with internal compensation and fixed 6MHz nominal switching frequency-synchronizable from 3MHz to 10MHz via MODE/SYNC pin. Its dual bucks operate 180° out of phase to reduce input ripple and improve transient response.
Each regulator features independent EN/FB/SW pins, precision 400mV enable threshold with hysteresis, 500mV feedback reference, and integrated overvoltage (110% VOUT), overtemperature (165°C), and short-circuit protection. The device supports forced continuous, pulse-skip, and Burst Mode® operation with automatic mode adaptation during synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.25V to 5.5V - supports single-cell Li-ion, USB PD, and intermediate bus rails without pre-regulation |
| Output Voltage Range | 0.5V to VIN - enables direct regulation for sub-1V FPGA/ASIC cores |
| Max Output Current | 2A per channel - sustained delivery with thermal derating up to 125°C junction temperature |
| Switching Frequency | 6MHz nominal, 3–10MHz syncable - enables ultra-small 240nH–330nH inductors and <10µF ceramic output caps |
| Feedback Accuracy | ±1% over –40°C to 125°C - ensures stable core voltage under thermal stress in automotive and industrial environments |
| Min On-Time | 25ns - supports high VIN-to-VOUT ratios (e.g., 5.5V→1.8V) at 6MHz without pulse skipping |
| Shutdown Current | 1.2µA - minimizes battery drain in always-on systems requiring deep sleep states |
| RDS(ON) | 19mΩ NMOS / 75mΩ PMOS - reduces conduction loss and thermal rise at full 2A load |
Pinout & Package
Package: 12-lead LQFN (2mm × 2mm × 0.74mm) with exposed thermal pad (Pin 13 = GND). Pin pitch: 0.5mm. MSL Level 3. RoHS-compliant e4 finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 (Pin 1) | Enable input for Buck 1 | Active-high with 400mV precision threshold; supports resistor-divider sequencing from upstream rail |
| FB1 (Pin 2) | Feedback input for Buck 1 | Regulates to 500mV; sets VOUT1 = 0.5V × (1 + R1/R2); accepts phase-lead capacitor for stability |
| FB2 (Pin 3) | Feedback input for Buck 2 | Independent 500mV reference; enables asymmetric dual-output configurations (e.g., 1.8V + 2.0V) |
| EN2 (Pin 4) | Enable input for Buck 2 | Independent sequencing control; allows staggered power-up for voltage-ramped SoC supplies |
| PGOOD (Pin 5) | Open-drain power-good indicator | Asserts high only when both enabled bucks are within 97–99% of target; includes 120µs fault filtering |
| SW2 (Pin 6) | Switch node for Buck 2 | Connects to inductor; requires short, wide PCB trace to minimize EMI and switching losses |
| VIN (Pins 7, 10) | Input supply connections | Dual VIN pins reduce IR drop and improve current sharing; must be bypassed locally with low-ESR capacitors |
| GND (Pins 8, 9, 13) | Ground terminals | Three GND connections including exposed pad - mandatory soldering to internal ground plane for θJA = 51°C/W |
| SW1 (Pin 11) | Switch node for Buck 1 | Phase-interleaved with SW2; enables 180° out-of-phase operation to halve input ripple current |
| MODE/SYNC (Pin 12) | Mode selection & clock sync | Configures Burst Mode® (VIN), pulse-skip (GND), or forced continuous (float); accepts 3–10MHz external clock |
Key Features
| Feature | Design Value |
|---|---|
| 180° phase interleaving | Reduces input RMS current by ~30% and cuts required input capacitance vs. non-interleaved dual bucks |
| Burst Mode® operation | Enables >85% efficiency at 1mA load while maintaining <10mVPP output ripple - ideal for standby power domains |
| Integrated soft-start | 1ms typical ramp time prevents inrush current; restarts automatically after UVLO or thermal fault recovery |
| Overvoltage protection | Shuts off PMOS within nanoseconds if FB exceeds 110% VOUT - safeguards sensitive downstream logic |
| AEC-Q100 Grade I | Qualified for –40°C to 125°C operation with production testing and failure analysis per automotive standards |
| Thermally enhanced LQFN | θJC(BOTTOM) = 8.6°C/W enables 2A/channel operation without heatsink in compact 4mm² footprint |
Applications
| FPGA Core Supply | Automotive ADAS Processor |
|---|---|
Use Scenario: Powering Xilinx Zynq UltraScale+ MPSoC core rails (VCCINT, VCCAUX) requiring tightly regulated 0.85V/1.0V at up to 2A each. IC Role / Device Role / Timing Role: Dual-channel point-of-load regulator providing independent, sequenced, and monitored core voltages with PGOOD assertion for boot validation. Use Value: 25ns min-on-time enables 5.5V→0.85V conversion at 6MHz, reducing inductor size by 40% vs. 2MHz alternatives while maintaining ±1% regulation across temperature. |
Use Scenario: Supplying NVIDIA DRIVE Orin SoC CPU/GPU clusters in camera ECU with strict automotive reliability requirements. IC Role / Device Role / Timing Role: AEC-Q100 qualified dual buck delivering 1.8V@2A (CPU) and 1.2V@2A (GPU) with synchronized switching to meet CISPR-25 EMI limits. Use Value: 180° phase interleaving cuts input ripple amplitude by 50%, easing compliance with automotive conducted emissions standards without added LC filters. |
| Optical Transceiver Module | Industrial PLC I/O Controller |
Use Scenario: Generating 3.3V and 2.5V rails for SFP+ DSP and laser driver ICs in compact pluggable modules. IC Role / Device Role / Timing Role: Space-constrained dual regulator with 2mm × 2mm footprint enabling full functionality in 1×2-inch module form factor. Use Value: 6MHz switching allows use of 0402-size 330nH inductors and 10µF 0402 MLCCs, achieving <12mm² total solution area per channel. |
Use Scenario: Providing isolated 5V and 3.3V auxiliary supplies for ARM-based controller and fieldbus interface ICs in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: High-efficiency dual buck operating from 12–24V intermediate bus with Burst Mode® for <100µA no-load consumption. Use Value: 1.2µA shutdown current extends backup battery life to >1 year in fail-safe monitoring circuits during mains outage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6521905RGER | Single-chip PMIC with 3 buck + 3 LDO; 4A total output; 2.7–5.5V input; no Burst Mode®; 2.2MHz max fSW | Targets multi-rail SoC power with integrated LDOs; lacks 6MHz capability and 25ns min-on-time for high-ratio conversion | Select when needing >2 rails or LDOs; avoid for high-frequency, space-constrained POL where LTC3315BIV#TRPBF's 2mm × 2mm size and 6MHz operation are critical |
| MP2451DT-LF-Z | Single 2A buck; 4.5–18V input; 340kHz fSW; no sync; no PGOOD; SOIC-8 package (3×4mm) | Requires two separate ICs for dual output; larger footprint; unsuitable for low-VIN or high-density designs | Select for cost-sensitive, non-automotive 12V-input applications where size and frequency are secondary; LTC3315BIV#TRPBF preferred for integrated dual 2A, AEC-Q100, and miniaturization |
Compared with TPS6521905RGER and MP2451DT-LF-Z, the LTC3315BIV#TRPBF uniquely delivers dual 2A channels in a 4mm² package with 6MHz operation, 25ns min-on-time, and AEC-Q100 qualification - making it optimal for space- and performance-constrained automotive and FPGA power delivery where discrete solutions increase BOM count and layout complexity.
Availability
LTC3315BIV#TRPBF is available at Aetrix Electronics and suitable for FPGA core supplies, automotive ADAS processors, and optical transceiver modules requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LTC3315BIV#TRPBF 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LTC3315BIV#TRPBF belongs to Analog Devices' Power by Linear™ family of high-frequency monolithic DC/DC converters, designed specifically for space-constrained, high-efficiency point-of-load applications in automotive, computing, and optical infrastructure.
FAQ
What is the maximum junction temperature rating for the LTC3315BIV#TRPBF?
The LTC3315BIV#TRPBF is rated for operation up to 125°C junction temperature and includes overtemperature shutdown at 165°C (typical). Its thermal design leverages the exposed pad (Pin 13) soldered to a PCB ground plane to achieve θJA = 51°C/W, enabling reliable 2A/channel operation in compact layouts without additional heatsinking. This rating aligns with automotive Grade I requirements.
Does the LTC3315BIV#TRPBF support independent voltage programming for each output?
Yes, the LTC3315BIV#TRPBF supports fully independent voltage programming: FB1 and FB2 each regulate to 500mV, allowing separate resistor dividers to set distinct output voltages (e.g., 1.8V on Channel 1 and 2.0V on Channel 2). The device maintains ±1% accuracy across both channels simultaneously, with no coupling or interference between regulation loops.
How does the MODE/SYNC pin configure operating modes on the LTC3315BIV#TRPBF?
The MODE/SYNC pin configures three modes: tie to GND for pulse-skip mode (low-noise constant frequency), float for forced continuous mode (fixed 6MHz PWM), or connect to VIN for Burst Mode® (ultra-low IQ at light loads). When driven by an external 3–10MHz clock, it synchronizes both bucks in forced continuous mode with 180° phase offset - the LTC3315BIV#TRPBF automatically adapts slope compensation to the applied frequency.
What protection features are integrated into the LTC3315BIV#TRPBF?
The LTC3315BIV#TRPBF integrates output overvoltage protection (shuts off PMOS if FB > 110% VOUT), overtemperature shutdown (165°C trip), output short-circuit protection, and input undervoltage lockout (2.25V). It also provides reverse current limiting (1A into SW), soft-start, and PGOOD fault reporting with 120µs filtering to prevent false triggers during transients - all active per channel independently.
Is the LTC3315BIV#TRPBF pin-compatible with other variants in the LTC3315B family?
Yes, all LTC3315B variants - including LTC3315BEV#TRPBF, LTC3315BJV#TRPBF, and LTC3315BIV#TRPBF - share identical 12-lead LQFN-12 pinout and footprint. The suffix denotes temperature grade (I = –40°C to 125°C) and packaging (TRPBF = tape-and-reel, RoHS, e4 finish), not functional or mechanical differences. Designers may substitute grades based on thermal requirements without layout changes.
LTC3315BIV#TRPBF 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:
- Adjustable
- 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, 2A
- Frequency - Switching:
- 6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3315BIV#TRPBF FAQ
1.How can I place an order for LTC3315BIV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3315BIV#TRPBF 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 LTC3315BIV#TRPBF reliable?
The price and inventory of LTC3315BIV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3315BIV#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3315BIV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3315BIV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3315BIV#TRPBF?
LTC3315BIV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3315BIV#TRPBF 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 LTC3315BIV#TRPBF?
For technical support, including LTC3315BIV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3315BIV#TRPBF requirements.
6.How does Aetrix verify that LTC3315BIV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3315BIV#TRPBF 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 LTC3315BIV#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3315BIV#TRPBF?
All LTC3315BIV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3315BIV#TRPBF, 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 LTC3315BIV#TRPBF part is unused and in its original packaging.
Return procedure for LTC3315BIV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3315BIV#TRPBF 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…
