My Inquiry
My Account
Analog Devices Inc. LTC7810HLXE#PBF
- Part No.:
- LTC7810HLXE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 48-LQFP Exposed Pad
- Datasheet:
-
LTC7810HLXE#PBF.pdf
- Description:
- 150V LOW IQ, DUAL, 2-PHASE SYNCH
- Quantity:
- Payment:
- Shipping:
Inventory:4,041
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC7810HLXE#PBF from Analog Devices is a high-performance dual synchronous step-down DC/DC controller driving all-N-channel MOSFET stages, supporting input voltages up to 140V and output voltages from 1V to 60V. It features 16μA no-load quiescent current, phase-lockable switching frequency up to 720kHz, and spread spectrum operation for EMI reduction-used in automotive 12V/5V dual-output power supplies.
For engineers reviewing the LTC7810HLXE#PBF datasheet, LTC7810HLXE#PBF pinout, LTC7810HLXE#PBF application, or LTC7810HLXE#PBF equivalent, key selection criteria include its AEC-Q100 qualification, 150V absolute max input rating, dual-phase interleaved operation, low-IQ dropout capability (78µA), and programmable gate drive voltage (6V/8V/10V) for logic- or standard-threshold FET optimization.
Technical Context
The LTC7810HLXE#PBF implements two independent constant-frequency current-mode controllers with interleaved 180° phase shift, reducing input ripple and capacitor stress. Each channel supports RSENSE or DCR current sensing, selectable light-load modes (Burst Mode®, pulse-skipping, or forced continuous), and precision 1V feedback reference with ±1.5% regulation accuracy over temperature.
Its dual LDO architecture includes an internal 4.5V INTVCC regulator and configurable DRVCC regulation (6V/8V/10V via DRVSET), plus EXTVCC switchover (4.55–8.8V range) and NDRV-driven external NMOS pass device support. The phase-locked loop accepts external clocks from 75kHz to 720kHz and enables spread spectrum dithering when PLLIN/SPREAD = INTVCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 140V - supports wide-range industrial and automotive battery inputs including 48V, 72V, and 120V systems. |
| Output Voltage Range | 1V to 60V - enables flexible buck conversion for core, I/O, and auxiliary rails across diverse applications. |
| No-Load Quiescent Current | 16μA at 48VIN → 12V/3.3V - extends battery runtime in always-on automotive modules and remote sensors. |
| Switching Frequency Range | 75kHz to 720kHz - allows optimization of size vs. efficiency; phase-lockable for noise-sensitive systems. |
| Junction Temperature Range | –40°C to +150°C - qualified per AEC-Q100 Grade H for under-hood automotive use without derating. |
| Gate Drive Voltage Options | 6V / 8V / 10V - selectable via DRVSET pin to match logic-level (e.g., SiC/GaN) or standard-threshold MOSFETs. |
| Current Sensing Method | RSENSE or inductor DCR - eliminates need for dedicated sense resistors in cost- or space-constrained designs. |
Pinout & Package
Package: 48-lead (7mm × 7mm) eLQFP with exposed thermal pad (Pin 49 = SGND), θJA = 20°C/W. Designed for high-power density and automotive thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SENSE1–, SENSE2– (Pins 1, 12) | Differential current sense negative input | Accepts common-mode voltage up to 65V; bias current drops to 16–30μA above 3.2V to reduce input-referred IQ in sleep mode. |
| VFB1, VFB2 (Pins 47, 14) | Feedback voltage input for each channel | 1V precision reference enables accurate output regulation; VFB2 tied to INTVCC enables two-phase single-output configuration. |
| DRVSET (Pin 2) | DRVCC regulation programming pin | Selects 6V (INTVCC), 8V (GND), or 10V (open) DRVCC output - directly sets gate drive strength and UVLO thresholds. |
| PLLIN/SPREAD (Pin 4) | External sync input / spread spectrum enable | Tied to INTVCC enables ±15% frequency dithering; tied to external clock enables precise multi-controller synchronization. |
| MODE (Pin 8) | Light-load operating mode selector | GND = Burst Mode® (25% clamp); INTVCC = forced continuous; 0.5–1.0V = adjustable burst clamp; >1.4V = pulse-skipping. |
| OVLO (Pin 9) | Overvoltage lockout input | Threshold = 1.22V rising edge; disables switching while maintaining DRVCC/INTVCC regulation - critical for transient protection in 120V+ systems. |
Key Features
| Feature | Design Value |
|---|---|
| Spread spectrum operation | ±15% frequency modulation at 4.5kHz - reduces peak conducted/EMI by >10dB, easing CISPR 25 Class 5 compliance. |
| 100% duty cycle capability | Enables ultra-low dropout operation down to VIN – VOUT < 100mV - supports hold-up during cold-crank or brownout conditions. |
| Low-IQ dropout mode | 78µA total supply current with one channel active - maintains system wakefulness during extended low-power states. |
| Interleaved dual-phase control | 180° phase offset cuts input RMS ripple current by ~70% - reduces required CIN volume and ESR heating. |
| AEC-Q100 Grade H qualification | Rated for –40°C to +150°C junction operation - validated for engine control units, ADAS cameras, and traction inverters. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial 48V Telecom Power System |
|---|---|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interfaces in diesel/gasoline engine management modules exposed to 120V load-dump transients. IC Role / Device Role / Timing Role: Dual-channel controller generating isolated 5V (digital) and 3.3V (analog) rails from 12V/24V battery with spread spectrum EMI suppression. Use Value: 150V abs max rating withstands ISO 7637-2 Pulse 5a; 78µA dropout IQ preserves CAN bus wakeup capability during ignition-off sleep. | Use Scenario: Supplies FPGA, SERDES, and optical module bias in 48V intermediate bus telecom infrastructure with strict ripple and thermal constraints. IC Role / Device Role / Timing Role: Interleaved dual-phase buck controller delivering 12V@10A and 3.3V@6A from 48V input with phase-locked synchronization to system clock. Use Value: 720kHz max fSW enables compact 22µH inductors; DCR sensing eliminates sense resistor losses in high-current paths. |
| Military Vehicle Power Distribution | Electric Vehicle Onboard Charger (OBC) Auxiliary Supply |
Use Scenario: Generates 15V and 5V rails for mission-critical avionics displays and navigation processors in 28V/270V aircraft/military platforms. IC Role / Device Role / Timing Role: High-voltage dual controller operating from 270V nominal input with programmable OVLO and soft-start tracking for fault-tolerant startup. Use Value: 140V operating VIN range covers MIL-STD-704F Category A/B transients; AEC-Q100 H-grade ensures reliability at +125°C ambient. | Use Scenario: Provides isolated 12V and 5V auxiliary power for OBC control logic, gate drivers, and communication ICs during AC/DC conversion. IC Role / Device Role / Timing Role: Dual synchronous buck controller deriving rails from 400V DC-link via isolated flyback pre-regulator, using EXTVCC switchover for efficiency. Use Value: EXTVCC LDO powered from secondary-side output improves overall system efficiency by >2% vs. VIN-derived DRVCC; 100% duty cycle sustains output during AC line dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2918GL-Z | Single-channel, 100V max VIN, no spread spectrum, lower IQ (25μA), QFN-32 package | Not suitable for dual-rail or >100V systems; lacks AEC-Q100 qualification and phase-lock capability | Select only for cost-sensitive, single-output 48V applications where EMI headroom exists. |
| LTC3892EFE#PBF | Dual-channel, 60V max VIN, 100μA no-load IQ, no spread spectrum, 32-pin TSSOP | Lower voltage rating limits use to 48V systems; higher IQ increases battery drain in always-on nodes | Prefer for legacy 48V designs requiring pin compatibility with older LTC389x family; not recommended for new 72V+ automotive designs. |
Compared with MP2918GL-Z and LTC3892EFE#PBF, the LTC7810HLXE#PBF uniquely combines 140V operation, AEC-Q100 H-grade, spread spectrum, and dual-phase interleaving - making it the only option for next-generation 72V/120V automotive and industrial power systems demanding low EMI and high thermal resilience.
Availability
LTC7810HLXE#PBF is available at Aetrix Electronics and suitable for automotive ECU power supplies, industrial 48V telecom systems, military vehicle electronics, and electric vehicle onboard charger auxiliary supplies requiring stable component supply and long-term lifecycle support.
Supply support for LTC7810HLXE#PBF 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 defense markets with precision power, timing, and interface solutions.
The LTC7810 product line delivers high-voltage dual synchronous buck controllers optimized for automotive under-hood and industrial high-input-voltage applications, emphasizing low quiescent current, EMI robustness, and AEC-Q100 reliability.
FAQ
What is the maximum input voltage rating for the LTC7810HLXE#PBF?
The LTC7810HLXE#PBF has an absolute maximum input voltage rating of 150V and a specified operating input range of 4.5V to 140V. This makes it suitable for harsh environments such as automotive load-dump transients (ISO 7637-2 Pulse 5a) and industrial 120VDC systems. Exceeding 140V during normal operation is not recommended, though the 150V abs max provides margin against short-duration spikes.
Does the LTC7810HLXE#PBF support spread spectrum operation, and how is it enabled?
Yes, the LTC7810HLXE#PBF supports spread spectrum operation to reduce peak EMI emissions. It is enabled by tying the PLLIN/SPREAD pin (Pin 4) to INTVCC, which activates ±15% frequency dithering at 4.5kHz. When disabled (PLLIN/SPREAD = GND), the device operates at a fixed frequency set by the FREQ pin or external synchronization source.
How does the LTC7810HLXE#PBF achieve low quiescent current in dropout conditions?
The LTC7810HLXE#PBF achieves 78µA total supply current in dropout with one channel active by routing SENSE1– bias current through the SENSE– pin instead of VIN when VSENSE– ≥ 3.2V, and by optimizing internal LDO biasing. This design significantly extends battery life in automotive keep-alive and telematics applications where the input voltage may dip near the output level.
What package type and thermal characteristics does the LTC7810HLXE#PBF use?
The LTC7810HLXE#PBF uses a 48-lead 7mm × 7mm eLQFP package with an exposed thermal pad (Pin 49 = SGND). Its thermal resistance is θJA = 20°C/W under standard JEDEC 2-layer board conditions. The exposed pad must be soldered to PCB ground to achieve rated thermal performance and support continuous operation at +150°C junction temperature.
Can the LTC7810HLXE#PBF be configured for two-phase single-output operation?
Yes, the LTC7810HLXE#PBF supports two-phase single-output operation by connecting VFB2 to INTVCC, which forces both channels to regulate to the same feedback node (VFB1). In this configuration, TRACK/SS1 and ITH1 control both phases, enabling interleaved operation with reduced output ripple and improved transient response for high-current single-rail applications like FPGA core supplies.
LTC7810HLXE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-LQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 2
- Output Phases:
- 2
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 140V
- Frequency - Switching:
- 105kHz ~ 780kHz
- Duty Cycle (Max):
- 100%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Current Limit, Frequency Control, Soft Start
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-eLQFP (7x7)
LTC7810HLXE#PBF FAQ
1.How can I place an order for LTC7810HLXE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC7810HLXE#PBF 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 LTC7810HLXE#PBF reliable?
The price and inventory of LTC7810HLXE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC7810HLXE#PBF is usually 5 days.
3.What payment methods are accepted for LTC7810HLXE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC7810HLXE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC7810HLXE#PBF?
LTC7810HLXE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC7810HLXE#PBF 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 LTC7810HLXE#PBF?
For technical support, including LTC7810HLXE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC7810HLXE#PBF requirements.
6.How does Aetrix verify that LTC7810HLXE#PBF is sourced from the original manufacturer or authorized distributors?
All LTC7810HLXE#PBF 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 LTC7810HLXE#PBF meets industry standards.
7.What is the process for return or replacement of LTC7810HLXE#PBF?
All LTC7810HLXE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC7810HLXE#PBF, 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 LTC7810HLXE#PBF part is unused and in its original packaging.
Return procedure for LTC7810HLXE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC7810HLXE#PBF Tags
-
UCC28C45DR
Texas Instruments
-
UCC28C40DR
Texas Instruments
-
UCC28C43DR
Texas Instruments
-
ZXSC410E6TA
Diodes Incorporated
-
LM3524DMX/NOPB
Texas Instruments
-
LM3489MMX/NOPB
Texas Instruments
-
MIC2102YML-TR
Microchip Technology
-
LM5148RGYR
Texas Instruments
-
TL598CDR
Texas Instruments
-
LM5155DSSR
Texas Instruments
-
LM25085MYX/NOPB
Texas Instruments
-
UCC2813DTR-0
Texas Instruments
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…
