My Inquiry
My Account
Analog Devices Inc. LT8606IDC#TRPBF
- Part No.:
- LT8606IDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8606IDC#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 350MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT8606IDC#TRPBF from Analog Devices is a 42V, 350mA synchronous step-down regulator in an 8-pin 2mm × 2mm DFN package, featuring 1.7µA non-switching quiescent current, 35ns minimum on-time, and peak current mode control for fast transient response. It delivers regulated 3.3V or 5V output in automotive infotainment power rails where ultralow IQ and low EMI are critical.
For engineers reviewing the LT8606IDC#TRPBF datasheet, LT8606IDC#TRPBF pinout, LT8606IDC#TRPBF application, or LT8606IDC#TRPBF equivalent, key selection criteria include input voltage range (3.0V–42V), Burst Mode efficiency at microamp loads, ±8.5% power-good accuracy, internal compensation, and AEC-Q100 qualification for automotive use.
Technical Context
The LT8606IDC#TRPBF implements a monolithic peak current mode architecture with internal 0.778V reference and fixed-frequency PWM control. Its 35ns minimum on-time enables high VIN/VOUT ratios (e.g., 42V→3.3V) without frequency foldback, while internal compensation eliminates external loop components.
As a DFN variant of the LT8606 family, LT8606IDC#TRPBF omits SYNC and TR/SS pins-internally tying SYNC to ground-locking it into low-ripple Burst Mode operation only. It lacks soft-start/tracking capability but retains EN/UV threshold hysteresis (50mV), PG open-drain signaling, and thermal shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 42V - supports direct battery connection in 12V/24V automotive systems without pre-regulation |
| Quiescent Current | 1.7µA (non-switching) - enables >10-year battery life in always-on vehicle modules |
| Max Output Current | 350mA continuous - sufficient for powering MCU cores, CAN transceivers, and sensor interfaces |
| Min On-Time | 35ns - allows 42V-to-3.3V conversion at 2MHz without duty-cycle limitation |
| Feedback Reference | 0.778V ±12mV - sets output accuracy; enables precise 3.3V/5V regulation via resistor divider |
| Power Good Threshold | ±8.5% of VOUT - provides reliable rail monitoring for system sequencing and fault detection |
| Switching Frequency | 200kHz to 2.2MHz (RT-programmable) - permits small 2.2µH–10µH inductors and EMI optimization |
Pinout & Package
LT8606IDC#TRPBF uses an 8-pin, 2mm × 2mm plastic DFN package with exposed thermal pad (Pin 9 = GND). The package has θJA = 102°C/W and requires soldering the exposed pad to PCB ground for thermal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply for high-side NMOS gate drive | Requires 0.1µF ceramic capacitor to SW; no series resistor allowed |
| SW | Switch node connecting internal top/bottom FETs to inductor | High dv/dt node; must be minimized on PCB to reduce EMI |
| INTVCC | Internal 3.5V regulator output | Bypass with ≥1µF low-ESR ceramic; not for external loading |
| RT | Resistor-based oscillator frequency programming | RT-to-GND sets fSW from 200kHz to 2.2MHz; no SYNC pin present |
| EN/UV | Enable and input undervoltage lockout input | 1.05V rising threshold with 50mV hysteresis; ties to VIN if unused |
| VIN | Main input power supply | Must be locally bypassed; connects to input capacitor positive terminal |
| PG | Open-drain power-good status output | Pulled low when VOUT within ±8.5%; high-impedance below 3.2V VIN |
| FB | Feedback input for output voltage regulation | Regulated to 0.778V; resistor divider determines VOUT; 1% resistors recommended |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 1.7µA non-switching current enables >10-year battery standby in always-on automotive modules |
| Low-Ripple Regulation | Output ripple <10mVP-P in Burst Mode - avoids noise-sensitive analog circuit interference |
| AEC-Q100 Qualified | Rated for –40°C to 125°C junction temperature - validated for under-hood automotive deployment |
| Internal Compensation | Eliminates external compensation network - reduces BOM count and layout sensitivity |
| Fast Minimum On-Time | 35ns enables high-step-down ratios at 2MHz - avoids bulky low-frequency magnetics |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC I/O rails and audio codecs in head units with cold-cranking (5.5V min) and load-dump (42V max) tolerance. IC Role / Device Role / Timing Role: Primary 3.3V/5V buck converter delivering 350mA with Burst Mode IQ <3µA during display-off state. Use Value: Enables >15-year battery drain life in parked vehicle mode while maintaining fast wake-up response. | Use Scenario: Supplies image sensor and ISP in rear-view camera modules mounted near exhaust or engine bay. IC Role / Device Role / Timing Role: Single-chip 5V regulator with AEC-Q100 Grade I rating and thermal shutdown at 150°C junction. Use Value: Eliminates need for external thermal monitoring; maintains stable output across –40°C to +125°C ambient. |
| Telematics Control Unit (TCU) | Vehicle-to-Everything (V2X) Radio Supply |
Use Scenario: Provides clean 3.3V for LTE modem, GNSS receiver, and CAN FD controller in cellular-connected ECUs. IC Role / Device Role / Timing Role: Low-EMI step-down regulator using spread-spectrum disabled (DFN default) and 2MHz switching for compact filter design. Use Value: Meets CISPR25 Class 5 radiated emission limits without added ferrite beads or shielding cans. | Use Scenario: Powers DSRC/WAVE or C-V2X radio ICs requiring tightly regulated 5V with fast load transient response. IC Role / Device Role / Timing Role: High-speed synchronous buck with 35ns min on-time supporting 12V→5V conversion during RF burst transmission. Use Value: Maintains <1% output deviation during 100mA–350mA load steps, preventing radio desense or packet loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8606EDC#TRPBF | Same DFN package and Burst Mode operation, but rated for –40°C to 125°C (E-grade) instead of I-grade; FB ref = 0.778V ±0.016V vs ±0.020V | Valid for commercial/industrial environments; not qualified for automotive AEC-Q100 | Select LT8606IDC#TRPBF when AEC-Q100 compliance and extended temperature validation are required. |
| LT8606BIDC#TRPBF | Same DFN package and I-grade temp range, but operates in pulse-skipping mode (no SYNC pin, internally floated); IQ = several mA in no-load regulation | Suitable where faster light-load transient response is prioritized over ultralow IQ; higher EMI than Burst Mode | Choose LT8606IDC#TRPBF when battery life, low-noise operation, and EMI compliance dominate design goals. |
Compared with LT8606EDC#TRPBF, LT8606IDC#TRPBF adds AEC-Q100 qualification and tighter production screening; compared with LT8606BIDC#TRPBF, it trades higher light-load efficiency and lower EMI for reduced transient speed-making it optimal for always-on automotive subsystems.
Availability
LT8606IDC#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, telematics control units, and V2X radio supplies requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for LT8606IDC#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The LT8606 family is designed for high-efficiency, ultralow-quiescent-current DC/DC conversion in space-constrained and battery-sensitive automotive applications-emphasizing reliability under wide VIN, low EMI, and AEC-Q100 compliance.
FAQ
What is the guaranteed operating temperature range for LT8606IDC#TRPBF?
The LT8606IDC#TRPBF is specified for –40°C to +125°C junction temperature and is AEC-Q100 qualified for automotive Grade I applications. Its DFN package features an exposed thermal pad that must be soldered to PCB ground to maintain thermal resistance below 102°C/W and ensure reliable operation across this full range.
Does LT8606IDC#TRPBF support external frequency synchronization?
No. LT8606IDC#TRPBF is the DFN-package variant with no SYNC pin; it is internally configured for Burst Mode operation only. Unlike MSOP versions, it cannot be synchronized to an external clock, nor can it operate in pulse-skipping or spread-spectrum modes. This simplifies layout but fixes its light-load behavior to ultralow-IQ Burst Mode.
What is the feedback reference voltage of LT8606IDC#TRPBF and how does it affect output accuracy?
The LT8606IDC#TRPBF regulates the FB pin to 0.778V with ±12mV (±1.5%) tolerance over temperature. For a 5V output, this yields ±75mV absolute accuracy using 1% resistors. Accuracy degrades slightly at extremes of input voltage and load due to line/load regulation specs (±0.06%/V and ±0.1% respectively), but remains within ±1.2% total error in typical automotive conditions.
How does the power-good (PG) pin of LT8606IDC#TRPBF behave during startup and fault conditions?
The PG pin of LT8606IDC#TRPBF is an open-drain output that remains high-impedance until VIN exceeds 3.2V and EN/UV is high. It pulls low only when VOUT reaches and sustains ±8.5% of the programmed value-signaling valid regulation-and stays low during overcurrent, thermal shutdown, or undervoltage faults. It does not assert during brief start-up overshoot or line transients.
Can LT8606IDC#TRPBF be used in a 42V-to-3.3V conversion at 2MHz without skipping cycles?
Yes. With a 35ns minimum on-time and peak current mode control, LT8606IDC#TRPBF achieves ~8% duty cycle at 42V→3.3V/2MHz, well above its physical limit. No frequency foldback or cycle skipping occurs under normal operation. However, at very light loads (<1mA), Burst Mode reduces effective frequency to maintain regulation while holding IQ at 1.7µA.
LT8606IDC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN 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):
- 3V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 12V
- Current - Output:
- 350mA
- Frequency - Switching:
- 200kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
LT8606IDC#TRPBF FAQ
1.How can I place an order for LT8606IDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8606IDC#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 LT8606IDC#TRPBF reliable?
The price and inventory of LT8606IDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8606IDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8606IDC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8606IDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8606IDC#TRPBF?
LT8606IDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8606IDC#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 LT8606IDC#TRPBF?
For technical support, including LT8606IDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8606IDC#TRPBF requirements.
6.How does Aetrix verify that LT8606IDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8606IDC#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 LT8606IDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8606IDC#TRPBF?
All LT8606IDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8606IDC#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 LT8606IDC#TRPBF part is unused and in its original packaging.
Return procedure for LT8606IDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT8606IDC#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…
