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Analog Devices Inc. LTC3307BHV#TRPBF
- Part No.:
- LTC3307BHV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307BHV#TRPBF.pdf
- Description:
- IC REG BUCK 3A
- Quantity:
- Payment:
- Shipping:
Inventory:3,624
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Product details
Overview
LTC3307BHV#TRPBF from Analog Devices is a monolithic synchronous step-down DC/DC converter delivering up to 3A output at 500mV–VIN, operating from 2.25V–5.5V input with 6.6MHz default switching frequency, 22ns minimum on-time, and ±1% output voltage accuracy over temperature. It integrates 8mΩ NMOS and 31mΩ PMOS power switches in a thermally enhanced 2mm × 2mm LQFN package and supports automotive-grade operation up to +150°C junction temperature.
For engineers reviewing the LTC3307BHV#TRPBF datasheet, LTC3307BHV#TRPBF pinout, LTC3307BHV#TRPBF application, or LTC3307BHV#TRPBF equivalent, key selection criteria include its Silent Switcher® EMI performance, programmable 3–10MHz frequency via RT pin, low-quiescent-current Burst Mode® (40µA), forced continuous/pulse-skipping mode flexibility, and AEC-Q100 qualification for automotive power rails.
Technical Context
The LTC3307BHV#TRPBF employs constant-frequency peak current mode control with internal compensation, enabling fast transient response without external loop components. Its 22ns minimum on-time supports high VIN/VOUT ratios (e.g., 5.5V→1.8V at 6.6MHz), while slope compensation adapts automatically during external clock synchronization on MODE/SYNC.
Silent Switcher® architecture uses dual-phase, symmetrical SW node routing and integrated input capacitors to suppress common-mode EMI. The device implements forward/reverse inductor current limiting (4.8A peak / 3.9A valley), output overvoltage protection (110% VOUT), and thermal shutdown at 165°C with hysteresis-critical for unattended automotive and industrial POL applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.25V to 5.5V - supports single-cell Li-ion, USB PD, and automotive 3.3V/5V rails with UVLO at 2.1V |
| VOUT Range | 0.5V to VIN - enables core supplies for FPGAs, ASICs, and microprocessors down to 500mV |
| Output Accuracy | ±1% over –40°C to +150°C - ensures stable regulation under extreme automotive thermal cycling |
| Switching Frequency | Programmable 3MHz–10MHz via RT resistor or external SYNC - allows optimization of inductor size vs. efficiency |
| Quiescent Current | 40µA in Burst Mode® sleep - extends battery life in always-on telematics and sensor nodes |
| Thermal Rating | Junction temp range –40°C to +150°C - qualified per AEC-Q100 Grade H for under-hood automotive use |
| Power Switch RDS(ON) | 8mΩ (NMOS) / 31mΩ (PMOS) - minimizes conduction loss at 3A load, enabling >90% efficiency at 1.8V/3A |
Pinout & Package
The LTC3307BHV#TRPBF is housed in a thermally optimized 12-lead 2mm × 2mm × 0.74mm LQFN package with exposed PGND pad (Pin 13) requiring solder connection to PCB ground plane for thermal and electrical integrity. θJA = 51°C/W, θJB = 12°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (1) | Analog ground reference | Remote sense return for FB; must connect directly to output capacitor negative terminal to reject PCB IR drop |
| EN (2) | Enable control input | 400mV precision threshold with hysteresis; enables sequencing with upstream regulators via resistor divider |
| VIN (3,8) | Main power input | Dual pins reduce trace inductance; bypass separately to PGND and AGND with low-ESR ceramics |
| PGND (4,7,13) | Power ground return | Exposed pad (13) is primary thermal path; requires ≥6 vias to inner ground plane for <12°C/W θJB |
| SW (5,6) | Switch node output | Dual pins minimize switching loop area; connect together and route short/wide to inductor |
| MODE/SYNC (9) | Mode select & sync input | Configures Burst Mode® (high), pulse-skip (low), forced continuous (float), or external clock sync (3–10MHz square wave) |
| RT (10) | Frequency programming | Resistor to AGND sets fSW from 3–10MHz; open or tied to VIN selects default 6.6MHz |
| PGOOD (11) | Open-drain status flag | Pulls low if VOUT <98% or >110% nominal, EN low, VIN UVLO, or thermal shutdown; 120µs delay filters noise |
| FB (12) | Feedback input | Regulates to 500mV; connects to resistor divider from VOUT to AGND; optional CFF improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® architecture | Reduces radiated EMI by >20dB vs. conventional buck converters-enables compliance with CISPR 25 Class 5 in compact layouts |
| Low-ripple Burst Mode® | Maintains <10mVpp output ripple at light loads while drawing only 40µA IQ-ideal for always-on automotive domain controllers |
| 100% duty-cycle operation | Supports dropout down to (VOUT + ILOAD × RDS(ON)_PMOS); enables 5.5V→5.0V conversion with minimal voltage loss |
| Internal compensation | Eliminates need for external compensation network-reduces BOM count and layout sensitivity across 0.5V–5.5V VOUT range |
| AEC-Q100 Grade H qualification | Validated for –40°C to +150°C operation with extended lifetime testing-meets automotive functional safety requirements for power supply ICs |
Applications
| Automotive ADAS Power Rail | Industrial FPGA Core Supply |
|---|---|
Use Scenario: Powering image signal processors and radar SoCs in camera modules operating under hood temperatures up to 125°C ambient. IC Role / Device Role / Timing Role: Primary 1.2V/3A POL regulator with AEC-Q100 qualification, synchronized to system clock via MODE/SYNC pin. Use Value: Silent Switcher® EMI suppression prevents interference with millimeter-wave radar receivers; 150°C junction rating ensures reliability in sealed enclosures. | Use Scenario: Delivering tightly regulated 0.85V core voltage to Xilinx Artix-7 FPGA in factory automation PLCs with wide input voltage variation. IC Role / Device Role / Timing Role: High-efficiency, fast-transient buck converter with internal compensation and soft-start for cold-start robustness. Use Value: 22ns minimum on-time enables stable 0.85V output from 3.3V rail at 6.6MHz; ±1% accuracy maintains FPGA timing margins across temperature. |
| Optical Networking Transceiver Bias | Medical Imaging Sensor Array |
Use Scenario: Generating low-noise 3.3V bias for SFP+ optical transceivers in telecom line cards where EMI must not disrupt 25Gbps serial links. IC Role / Device Role / Timing Role: Low-EMI, low-ripple POL converter operating in forced continuous mode to eliminate switching frequency sidebands near data lanes. Use Value: Dual-SW-pin layout and integrated input caps cut peak EMI by 25dB; 6.6MHz switching avoids critical SerDes clock harmonics. | Use Scenario: Powering CMOS image sensor arrays in portable ultrasound devices requiring ultra-low standby power and rapid wake-up. IC Role / Device Role / Timing Role: Always-on 1.8V/1A supply using Burst Mode® with 40µA IQ and 250ms soft-start to prevent sensor reset glitches. Use Value: 40µA quiescent current extends battery runtime; PGOOD flag sequences sensor initialization after power-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2164GQ-Z | 4A rated, 2.5–5.5V input, fixed 3MHz fSW, no SYNC pin, 12µA IQ in shutdown only | Lacks Burst Mode® and external sync; lower EMI suppression; not AEC-Q100 qualified | Choose for cost-sensitive non-automotive apps needing higher current but accepting higher EMI and no thermal grade H |
| TPS6286418RRLR | 3A, 2.7–6V input, 1.8V fixed output, 4MHz fSW, 1.2µA IQ in deep sleep, no Silent Switcher | Fixed-output variant only; no adjustable VOUT or RT programming; lower thermal rating (–40°C to +125°C) | Choose for space-constrained consumer apps where fixed 1.8V and ultra-low IQ outweigh EMI and automotive requirements |
Compared with MP2164GQ-Z and TPS6286418RRLR, the LTC3307BHV#TRPBF uniquely combines AEC-Q100 Grade H qualification, programmable 3–10MHz switching, Silent Switcher® EMI reduction, and true 0.5V–VIN adjustable output-making it the only option qualified for high-reliability automotive and industrial POL where EMI, thermal margin, and design flexibility are co-critical.
Availability
LTC3307BHV#TRPBF is available at Aetrix Electronics and suitable for automotive ADAS modules, industrial FPGA power supplies, optical networking transceivers, and medical imaging systems requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LTC3307BHV#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.
The LTC3307BHV#TRPBF belongs to the Silent Switcher® family of high-frequency DC/DC converters designed specifically for noise-sensitive automotive and industrial point-of-load applications demanding ultra-low EMI, small solution size, and extended temperature reliability.
FAQ
What is the maximum junction temperature rating for LTC3307BHV#TRPBF?
The LTC3307BHV#TRPBF is rated for operation up to +150°C junction temperature and is qualified per AEC-Q100 Grade H. Thermal shutdown activates at 165°C (typical), with hysteresis returning operation at 160°C. This rating enables deployment in under-hood automotive environments and high-ambient industrial settings where standard commercial-grade buck converters would derate or fail.
How does the MODE/SYNC pin configure operating modes on LTC3307BHV#TRPBF?
The MODE/SYNC pin on LTC3307BHV#TRPBF selects three distinct modes: tie to GND for pulse-skipping mode, tie to VIN for low-ripple Burst Mode®, or leave floating for forced continuous conduction. When driven with a 3–10MHz square wave, it synchronizes the internal oscillator in forced continuous mode. Each configuration alters light-load efficiency, output ripple, and EMI profile-giving designers direct control over trade-offs without changing external components.
Can LTC3307BHV#TRPBF support 5.0V output from a 5.5V input?
Yes, LTC3307BHV#TRPBF supports 5.0V output from 5.5V input using 100% duty-cycle operation. Its PMOS top switch enables dropout limited only by ILOAD × RDS(ON)_PMOS (31mΩ max). At 3A load, dropout is ~93mV-delivering 5.0V output with 5.5V input. The device maintains regulation without external components, unlike traditional bucks requiring external LDO post-regulation for such tight VIN–VOUT margins.
What is the purpose of the AGND pin on LTC3307BHV#TRPBF, and how should it be routed?
The AGND pin on LTC3307BHV#TRPBF serves as the remote voltage sense return for the FB network and the analog ground reference for internal error amplifiers and comparators. It must be connected directly to the negative terminal of the output capacitor at the load-not to the local PGND-to reject PCB trace resistance and ensure accurate output regulation. Routing AGND separately from PGND and bypassing VIN to AGND with a 0201 ceramic capacitor minimizes noise coupling into the feedback path.
Does LTC3307BHV#TRPBF require external compensation components?
No, LTC3307BHV#TRPBF features fully internal compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces BOM count, and improves production consistency across the full 0.5V–VIN output range. The internal loop is optimized for stability with standard 220nH inductors and 4.7µF ceramic output capacitors, as validated in the typical application circuit (Figure TA01a).
LTC3307BHV#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Silent Switcher®1
- Package/Case:
- 12-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3307BHV#TRPBF FAQ
1.How can I place an order for LTC3307BHV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307BHV#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 LTC3307BHV#TRPBF reliable?
The price and inventory of LTC3307BHV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307BHV#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3307BHV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307BHV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307BHV#TRPBF?
LTC3307BHV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307BHV#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 LTC3307BHV#TRPBF?
For technical support, including LTC3307BHV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307BHV#TRPBF requirements.
6.How does Aetrix verify that LTC3307BHV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307BHV#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 LTC3307BHV#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3307BHV#TRPBF?
All LTC3307BHV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307BHV#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 LTC3307BHV#TRPBF part is unused and in its original packaging.
Return procedure for LTC3307BHV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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