My Inquiry
My Account
Analog Devices Inc. LTC3307AHV#TRPBF
- Part No.:
- LTC3307AHV#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 12-VFQFN Exposed Pad
- Datasheet:
-
LTC3307AHV#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 3A 12LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,522
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3307AHV#TRPBF from Analog Devices is a monolithic synchronous step-down DC/DC converter delivering up to 3A output current, operating from 2.25V to 5.5V input, regulating down to 0.5V with ±1% feedback accuracy, and featuring Silent Switcher® architecture for ultralow EMI - deployed in automotive power supplies, FPGA core rails, and compact POL systems.
For engineers reviewing the LTC3307AHV#TRPBF datasheet, LTC3307AHV#TRPBF pinout, LTC3307AHV#TRPBF application, or LTC3307AHV#TRPBF equivalent, key selection criteria include its 22ns minimum on-time, 1–3MHz programmable switching frequency, forced continuous/pulse-skipping/Burst Mode™ operation, AEC-Q100 qualification (–40°C to +150°C), and thermally enhanced 12-lead 2mm × 2mm LQFN package with exposed PGND pad.
Technical Context
The LTC3307AHV#TRPBF employs peak current mode control with internal compensation, enabling fast transient response and stable regulation across wide load and line variations. Its architecture supports three distinct operating modes - forced continuous (fixed-frequency, low-ripple), pulse-skipping (light-load efficiency), and Burst Mode™ (40µA IQ, low-noise sleep cycles) - selected via the MODE/SYNC pin voltage level.
It integrates dual MOSFETs with 8mΩ NMOS and 31mΩ PMOS RDS(ON), supports clock synchronization from 1MHz to 3MHz, tolerates inductor saturation under overload, and delivers up to 100% duty cycle for ultra-low dropout operation - all while maintaining output overvoltage protection, short-circuit protection, thermal shutdown, and precise 400mV enable threshold with hysteresis.
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 for sub-1V FPGA/ASIC cores and configurable logic supplies. |
| Output Accuracy | ±1% over temperature - ensures tight voltage margining for high-performance digital loads. |
| Switching Frequency | 1MHz to 3MHz (RT-programmable or SYNC-driven) - allows optimization of size vs. efficiency and EMI filtering requirements. |
| Minimum On-Time | 22ns - enables high step-down ratios (e.g., 5V→0.5V at 2MHz) with practical inductor values. |
| Quiescent Current | 40µA in Burst Mode sleep - extends battery life in always-on sensor or telematics modules. |
| Thermal Rating | Junction temp range –40°C to +150°C - qualified per AEC-Q100 Grade H for under-hood automotive use. |
Pinout & Package
Package: 12-lead 2mm × 2mm × 0.74mm LQFN with exposed PGND pad (Pin 13), optimized for thermal dissipation (θJA = 51°C/W) and low EMI layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Remote sense return for FB; must connect directly to output capacitor negative terminal at load to reject PCB IR drop. |
| EN (Pin 2) | Enable control input | 400mV precision threshold with hysteresis - enables accurate power sequencing with resistor dividers from upstream rails. |
| VIN (Pins 3, 8) | Main input power supply | Dual high-current paths for internal circuitry and top switch; requires parallel low-ESR ceramic bypass to PGND/AGND. |
| PGND (Pins 4, 7, Exposed Pad 13) | Power ground return | Primary return for bottom switch; exposed pad must be soldered to large PCB ground plane with multiple vias for thermal and EMI performance. |
| SW (Pins 5, 6) | Switch node | High dv/dt node connecting internal FETs to external inductor; requires short, wide trace to minimize parasitic inductance and EMI. |
| MODE/SYNC (Pin 9) | Mode selection / clock sync | Configures light-load behavior (low = pulse-skip, float = forced continuous, high = Burst Mode) or accepts 1–3MHz external clock. |
| RT (Pin 10) | Frequency programming | Resistor-to-AGND sets oscillator frequency; ignored when external clock applied to MODE/SYNC. |
| PGOOD (Pin 11) | Power good indicator | Open-drain output asserting high when VOUT is within –2%/+10% window; includes 120µs delay and OV/UV fault detection. |
| FB (Pin 12) | Feedback input | Regulates to 500mV reference; connects to resistor divider from VOUT to AGND - phase-lead cap optional for transient tuning. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® architecture | Minimizes magnetic and electric field EMI emissions without shielding or complex layout - meets CISPR 22 Class B limits with standard 2-layer PCB. |
| Burst Mode™ operation | Delivers 90%+ efficiency at 1mA load with 40µA quiescent current - critical for always-on automotive infotainment and ADAS subsystems. |
| 22ns minimum on-time | Enables 5V-to-0.5V conversion at 2MHz using 470nH inductors - reduces solution size versus legacy controllers requiring larger inductors or lower frequencies. |
| AEC-Q100 Grade H qualification | Validated for –40°C to +150°C operation with full electrical characterization - suitable for engine control units, transmission modules, and body electronics. |
| Integrated 8mΩ/31mΩ MOSFETs | Reduces conduction loss and eliminates external gate drivers - achieves >92% efficiency at 3A/1.2V out from 3.3V input in forced continuous mode. |
Applications
| Automotive ADAS Power Supply | FPGA Core Voltage Rail |
|---|---|
Use Scenario: Powers image signal processor (ISP) and radar SoC in forward-facing camera module with strict EMI limits and extended temperature operation. IC Role / Device Role / Timing Role: Primary 1.2V/3A POL regulator delivering low-noise, ripple-controlled power with fast load transient response to handle burst-mode imaging workloads. Use Value: Silent Switcher® architecture eliminates need for metal shields; AEC-Q100 H-grade rating ensures reliability at 150°C junction temperature under hood. |
Use Scenario: Supplies configurable logic core (VCCINT) for Xilinx Artix-7 FPGA in industrial PLC with dynamic voltage scaling and tight regulation tolerance. IC Role / Device Role / Timing Role: High-accuracy, digitally programmable point-of-load converter supporting 0.5V–1.2V outputs with ±1% setpoint stability over temperature and load. Use Value: 22ns min on-time enables direct 5V-to-0.75V conversion at 2MHz, reducing inductor size by 40% versus 1MHz alternatives. |
| Optical Network Line Card | Battery-Powered Telematics Unit |
Use Scenario: Generates 3.3V/2A and 1.2V/3A rails from 5V backplane in compact SFP+ transceiver module with stringent thermal constraints. IC Role / Device Role / Timing Role: Dual-rail capable (with second LTC3307A) synchronous buck providing low-EMI, high-efficiency conversion in space-constrained 25mm × 18mm footprint. Use Value: 12-lead 2mm × 2mm LQFN package fits dense optical layouts; programmable 1–3MHz frequency avoids sensitive 2.5G/10G data band interference. |
Use Scenario: Powers LTE modem, GNSS receiver, and CAN controller in vehicle tracking device powered by single-cell Li-ion (3.0–4.2V). IC Role / Device Role / Timing Role: Primary system regulator operating in Burst Mode™ during GPS cold-start sleep cycles to extend battery runtime beyond 72 hours. Use Value: 40µA IQ in Burst Mode sleep reduces standby power to <120µW - enabling multi-year operation on 1,000mAh cell without recharge. |
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 |
|---|---|---|---|
| MP2145GQ-Z | 4A rated, 2.5V–6V input, fixed 2.2MHz fSW, no SYNC, no Burst Mode, 12-pin QFN (3mm × 3mm) | Larger footprint, higher IQ (50µA), lacks AEC-Q100 qualification and Silent Switcher EMI suppression | Choose for cost-sensitive non-automotive apps where 4A headroom and fixed frequency simplify design. |
| TPS6286418RTER | 3A, 2.7V–6V input, 1.8V fixed output, 2.25MHz fSW, integrated inductor option, no MODE/SYNC pin | Fixed-output only, no programmable VOUT or light-load mode selection, smaller 1.2mm × 0.8mm WSON but no thermal pad | Choose for space-constrained, fixed-voltage applications where simplified BOM outweighs flexibility needs. |
Compared with MP2145GQ-Z and TPS6286418RTER, the LTC3307AHV#TRPBF offers superior EMI performance, automotive-grade reliability, and granular light-load mode control - making it optimal for safety-critical, thermally constrained, or noise-sensitive designs despite its higher unit cost.
Availability
LTC3307AHV#TRPBF is available at Aetrix Electronics and suitable for automotive ADAS modules, FPGA core supplies, optical networking line cards, and battery-powered telematics requiring stable component supply across extended temperature and long production lifecycles.
Supply support for LTC3307AHV#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 LTC3307A product line delivers ultra-compact, high-efficiency, low-EMI DC/DC converters for space- and noise-constrained applications - designed specifically for automotive infotainment, ADAS, and next-generation computing infrastructure where thermal density and electromagnetic compatibility are critical.
FAQ
What is the maximum junction temperature rating for the LTC3307AHV#TRPBF?
The LTC3307AHV#TRPBF is rated for operation from –40°C to +150°C junction temperature and is AEC-Q100 qualified for automotive Grade H applications. Its thermal shutdown activates at ~165°C, with recovery at ~160°C. The 12-lead LQFN package features an exposed PGND pad to achieve θJA = 51°C/W on a standard JEDEC 2S2P board, enabling reliable 3A operation at elevated ambient temperatures when properly mounted.
Does the LTC3307AHV#TRPBF support external clock synchronization?
Yes, the LTC3307AHV#TRPBF supports external clock synchronization via its MODE/SYNC pin, accepting square-wave inputs from 1MHz to 3MHz. When synchronized, the device operates exclusively in forced continuous mode, and slope compensation automatically adapts to the external frequency. The RT pin is ignored during synchronization, and the internal PLL locks to the external clock within microseconds after first edge detection.
How does the MODE/SYNC pin configure operating modes on the LTC3307AHV#TRPBF?
The MODE/SYNC pin selects among three light-load behaviors: grounding enables pulse-skipping mode (low-noise, moderate efficiency), floating enables forced continuous mode (fixed-frequency, lowest ripple), and tying to VIN enables Burst Mode™ (highest light-load efficiency, 40µA IQ). No external components are needed - each state is defined solely by the DC voltage level applied to MODE/SYNC.
What is the purpose of the AGND pin on the LTC3307AHV#TRPBF?
The AGND pin on the LTC3307AHV#TRPBF serves as both the remote output voltage sense return and the analog ground reference for internal circuitry including the error amplifier and FB comparator. It must be connected directly to the negative terminal of the output capacitor at the load to reject PCB trace resistance errors - ensuring ±1% regulation accuracy even with significant board-level IR drop between the IC and load.
Can the LTC3307AHV#TRPBF operate in 100% duty cycle dropout mode?
Yes, the LTC3307AHV#TRPBF supports up to 100% duty cycle operation, allowing it to maintain regulation as the input voltage approaches the output voltage - for example, sustaining 1.2V output from a discharging 1.5V Li-SOCl₂ battery or a 3.3V rail dropping below 3.6V. In dropout, the top switch remains continuously on, minimizing voltage difference and maximizing usable battery capacity in low-VIN scenarios.
LTC3307AHV#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:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.25V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-LQFN (2x2)
LTC3307AHV#TRPBF FAQ
1.How can I place an order for LTC3307AHV#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3307AHV#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 LTC3307AHV#TRPBF reliable?
The price and inventory of LTC3307AHV#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3307AHV#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3307AHV#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3307AHV#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3307AHV#TRPBF?
LTC3307AHV#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3307AHV#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 LTC3307AHV#TRPBF?
For technical support, including LTC3307AHV#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3307AHV#TRPBF requirements.
6.How does Aetrix verify that LTC3307AHV#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3307AHV#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 LTC3307AHV#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3307AHV#TRPBF?
All LTC3307AHV#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3307AHV#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 LTC3307AHV#TRPBF part is unused and in its original packaging.
Return procedure for LTC3307AHV#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3307AHV#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…
