My Inquiry
My Account
Analog Devices Inc. LTC3315BIV#TRMPBF
- Part No.:
- LTC3315BIV#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3315BIV#TRMPBF.pdf
- Description:
- IC REG BUCK ADJ 2A/2A DL 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,144
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3315BIV#TRMPBF from Analog Devices is a dual monolithic synchronous step-down DC/DC converter IC delivering two independent 2A outputs from a 2.25V–5.5V input, operating at 6MHz with 25ns minimum on-time and ±1% output voltage accuracy. It integrates two 19mΩ NMOS and 75mΩ PMOS power switches in a thermally enhanced 2mm × 2mm LQFN package, targeting FPGA core supplies and space-constrained POL applications.
For engineers reviewing the LTC3315BIV#TRMPBF datasheet, LTC3315BIV#TRMPBF pinout, LTC3315BIV#TRMPBF application, or LTC3315BIV#TRMPBF equivalent, key selection criteria include dual-output synchronization capability, 180° phase interleaving for ripple reduction, Burst Mode® operation for <1.2µA shutdown current, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The LTC3315BIV#TRMPBF implements peak current mode control with internal compensation and fixed 180° phase offset between its two buck regulators. Its MODE/SYNC pin supports three operating modes-forced continuous (low ripple), pulse-skip (noise-sensitive), and Burst Mode® (light-load efficiency)-with automatic adaptation of slope compensation during external clock synchronization from 3MHz to 10MHz.
Each regulator features independent EN/FB/SW pins, precision 400mV enable thresholds for sequencing, and integrated protection including output overvoltage detection (110% VOUT), thermal shutdown at 165°C, and short-circuit recovery with soft-start restart. The device regulates down to 0.5V with 500mV feedback reference and supports up to 100% duty cycle for low-dropout operation.
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 and configurable I/O supplies. |
| Max Output Current | 2A per channel - sufficient for high-performance digital loads with margin for transient peaks. |
| Switching Frequency | 6MHz typical (3–10MHz syncable) - allows use of 240nH–330nH inductors and compact 10µF ceramic output caps. |
| Feedback Accuracy | ±1% over temperature - ensures stable core voltage under thermal stress in industrial/automotive environments. |
| Shutdown Current | 1.2µA - minimizes battery drain in always-on systems requiring deep sleep states. |
| RDS(ON) NMOS/PMOS | 19mΩ / 75mΩ - reduces conduction loss and thermal rise at full 2A load in compact 2mm × 2mm footprint. |
Pinout & Package
Package: 12-lead 2mm × 2mm × 0.74mm LQFN with exposed thermal pad (Pin 13 = GND). Requires soldering of exposed pad to PCB ground plane for rated θJA = 51°C/W and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2 (Pins 1, 4) | Independent enable inputs | 400mV precision threshold enables power-up sequencing via resistor dividers from upstream rails. |
| FB1, FB2 (Pins 2, 3) | Feedback inputs | Regulates to 500mV reference; sets output voltage via external resistor divider (e.g., 33.2k/86.6k for 1.8V). |
| VIN (Pins 7, 10) | Input supply connections | Dual VIN pins reduce IR drop and improve current sharing; require local low-ESR bypass capacitors. |
| SW1, SW2 (Pins 11, 6) | Switch node outputs | Connect directly to inductor; phase-interleaved switching reduces input/output ripple and EMI. |
| PGOOD (Pin 5) | Open-drain power-good indicator | Asserts high only when both enabled outputs are within 97–99% of target; includes 120µs fault filtering. |
| MODE/SYNC (Pin 12) | Mode control & sync input | Selects Burst/Pulse-Skip/Forced Continuous mode or accepts 3–10MHz external clock for system-wide timing alignment. |
| GND (Pins 8, 9, 13) | Ground terminals | Three GND connections including exposed pad ensure low-impedance return path and optimal thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 2A synchronous buck regulators | Integrated 19mΩ NMOS and 75mΩ PMOS switches eliminate external MOSFETs and gate drivers, reducing BOM count and layout area. |
| 180° phase interleaving | Halves input ripple current and cuts output capacitor RMS current, enabling smaller input/output capacitance and lower EMI. |
| Burst Mode® operation | Delivers >85% efficiency at 1mA load while maintaining <10mVpp output ripple, ideal for battery-powered standby circuits. |
| Robust protection suite | Includes output overvoltage lockout (110% VOUT), thermal shutdown (165°C), short-circuit recovery with soft-start, and UVLO hysteresis (150mV). |
| AEC-Q100 qualified | Rated for –40°C to 125°C junction temperature with automotive-grade process controls and reliability testing per JESD47. |
Applications
| FPGA Core Supply | Automotive ADAS Processor Rail |
|---|---|
Use Scenario: Powering Xilinx Zynq UltraScale+ MPSoC core voltage (VCCINT) requiring tight regulation and fast load transient response. IC Role / Device Role / Timing Role: Dual-output DC/DC controller providing independent 1.0V@2A and 0.85V@2A rails with synchronized 6MHz switching and 180° phase offset. Use Value: Achieves <100mV undershoot during 2A/µs load steps while maintaining ±1% accuracy across –40°C to 125°C ambient. |
Use Scenario: Generating clean 1.8V and 2.0V supplies for NVIDIA DRIVE Orin SoC I/O and memory interfaces in camera ECU modules. IC Role / Device Role / Timing Role: AEC-Q100 qualified dual buck delivering isolated, sequenced power with PGOOD monitoring for ASIL-B functional safety compliance. Use Value: Enables single-chip solution replacing two discrete converters, reducing PCB area by 45% and eliminating inter-rail coupling noise. |
| Optical Transceiver Module | Industrial PLC I/O Controller |
Use Scenario: Powering 100G QSFP-DD transceiver ASICs with strict low-noise requirements and thermal constraints in confined front-panel space. IC Role / Device Role / Timing Role: High-frequency (6MHz) dual regulator supplying 3.3V bias and 1.2V core rails using miniature 240nH inductors and 10µF ceramic caps. Use Value: Minimizes conducted EMI through phase interleaving and Burst Mode® operation, meeting CISPR 32 Class B limits without shielding. |
Use Scenario: Providing isolated 5V and 3.3V rails for ARM Cortex-M7 microcontroller and analog sensor interface in DIN-rail mounted automation controllers. IC Role / Device Role / Timing Role: Dual buck converter with forced continuous mode and external clock sync to align switching with real-time Ethernet traffic bursts. Use Value: Reduces input ripple by 60% versus single-phase design, preventing noise coupling into precision ADC reference paths. |
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 4A buck + dual 2A bucks; 2.7–5.5V input; 1.2MHz max frequency; no Burst Mode®; 12-bit telemetry interface. | Targeted at multi-rail PMIC applications with telemetry; lacks 6MHz high-frequency operation and phase interleaving. | Choose for systems requiring voltage/current telemetry and higher integration, not for ultra-compact 6MHz POL designs. |
| ISL8026IRTAJZ | Dual 3A bucks; 2.7–5.5V input; 500kHz–4MHz sync range; ±2% FB accuracy; no AEC-Q100 rating; larger 4mm × 4mm QFN. | Suitable for industrial non-automotive applications where size and light-load efficiency are secondary to cost. | Choose when 3A per rail is required and AEC-Q100 qualification is unnecessary; avoid for space-constrained automotive designs. |
Compared with TPS6521905RGER and ISL8026IRTAJZ, the LTC3315BIV#TRMPBF uniquely combines 6MHz operation, 2mm × 2mm footprint, AEC-Q100 qualification, and Burst Mode® efficiency below 1mA - making it optimal for next-generation automotive and optical networking point-of-load systems where size, noise, and light-load performance are critical.
Availability
LTC3315BIV#TRMPBF is available at Aetrix Electronics and suitable for FPGA core supplies, automotive ADAS processors, and optical transceiver modules requiring stable component supply with automotive-grade reliability and long-term production support.
Supply support for LTC3315BIV#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3315BIV#TRMPBF belongs to Analog Devices' Power by Linear™ family of high-efficiency, high-density DC/DC converters designed specifically for demanding point-of-load applications in space-constrained and thermally challenging environments.
FAQ
What is the maximum supported switching frequency for LTC3315BIV#TRMPBF?
The LTC3315BIV#TRMPBF supports an internal oscillator frequency of 6MHz (typical) and can be synchronized to an external clock from 3MHz to 10MHz via the MODE/SYNC pin. At 10MHz, it enables use of sub-240nH inductors and further reduces output capacitor requirements while maintaining stable regulation and fast transient response in the LTC3315BIV#TRMPBF.
Does LTC3315BIV#TRMPBF support independent enable and feedback for each buck channel?
Yes, the LTC3315BIV#TRMPBF provides fully independent EN1/EN2 and FB1/FB2 pins, allowing separate power-up sequencing, different output voltages (e.g., 1.0V and 1.8V), and individual loop compensation. Each feedback pin regulates to a precise 500mV reference, and the enable pins feature 400mV thresholds with 50mV hysteresis for robust noise immunity in the LTC3315BIV#TRMPBF.
How does the PGOOD pin function in LTC3315BIV#TRMPBF?
The PGOOD pin in the LTC3315BIV#TRMPBF is an open-drain output that goes high only when both enabled buck regulators maintain output voltage within 97–99% of their programmed value for >120µs. It also pulls low during overvoltage (>110% VOUT), thermal shutdown, UVLO, or when either buck is disabled - providing comprehensive power-fault reporting for system monitoring in the LTC3315BIV#TRMPBF.
What thermal performance can be expected from LTC3315BIV#TRMPBF in a standard 4-layer PCB?
With the exposed thermal pad (Pin 13) soldered to a solid 1-in² internal ground plane on a standard 4-layer PCB, the LTC3315BIV#TRMPBF achieves θJA = 51°C/W. At 2A per channel and 3.3V input, typical power dissipation is ~0.45W, resulting in ~23°C temperature rise above ambient - well within the –40°C to 125°C operating junction range specified for the LTC3315BIV#TRMPBF.
Is LTC3315BIV#TRMPBF pin-compatible with earlier LTC3315 versions?
Yes, the LTC3315BIV#TRMPBF shares identical pinout, package dimensions, and electrical characteristics with other variants in the LTC3315B family (e.g., LTC3315BEV#TRMPBF, LTC3315BJV#TRMPBF). The "I" grade denotes –40°C to 125°C operation, and the #TRMPBF suffix indicates 500-piece tape-and-reel packaging - all mechanically and electrically compatible with existing LTC3315BIV#TRMPBF footprints and layouts.
LTC3315BIV#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:
- 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#TRMPBF FAQ
1.How can I place an order for LTC3315BIV#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3315BIV#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 LTC3315BIV#TRMPBF reliable?
The price and inventory of LTC3315BIV#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3315BIV#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3315BIV#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3315BIV#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3315BIV#TRMPBF?
LTC3315BIV#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3315BIV#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 LTC3315BIV#TRMPBF?
For technical support, including LTC3315BIV#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3315BIV#TRMPBF requirements.
6.How does Aetrix verify that LTC3315BIV#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3315BIV#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 LTC3315BIV#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3315BIV#TRMPBF?
All LTC3315BIV#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3315BIV#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 LTC3315BIV#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3315BIV#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3315BIV#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…
