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Analog Devices Inc. LTC7810ILXE#PBF
- Part No.:
- LTC7810ILXE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 48-LQFP Exposed Pad
- Datasheet:
-
LTC7810ILXE#PBF.pdf
- Description:
- 150V LOW IQ, DUAL, 2-PHASE SYNCH
- Quantity:
- Payment:
- Shipping:
Inventory:4,585
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Product details
Overview
LTC7810ILXE#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-enabling robust 12V/5V dual-rail power supplies in automotive infotainment systems.
For engineers reviewing the LTC7810ILXE#PBF datasheet, LTC7810ILXE#PBF pinout, LTC7810ILXE#PBF application, or LTC7810ILXE#PBF equivalent, key selection criteria include its 48-lead eLQFP package, AEC-Q100 qualification, dual-phase interleaved operation for reduced input ripple, and programmable gate drive (6V/8V/10V) for optimal FET selection in high-voltage industrial converters.
Technical Context
The LTC7810ILXE#PBF implements two independent constant-frequency current-mode controllers with out-of-phase operation (180° shift), reducing input capacitor RMS current and conducted noise. Each channel supports RSENSE or DCR current sensing, with matched ±5mV sense threshold offset and 75mV typical maximum sense voltage.
Its dual LDO architecture includes an internal VIN-based regulator (DRVCC), an external NMOS-driven NDRV path, and an EXTVCC switchover LDO-all programmable via DRVSET pin to set DRVCC at 6V, 8V, or 10V. The PLLIN/SPREAD pin enables either external clock synchronization (75–720kHz) or internal spread spectrum dithering (±15% frequency deviation).
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 bus systems. |
| Output Voltage Range | 1V to 60V - enables direct regulation of logic rails (3.3V, 5V), intermediate buses (12V), and high-voltage analog supplies (up to 60V). |
| No-Load Quiescent Current | 16μA - extends battery runtime in always-on automotive modules and remote sensors. |
| Switching Frequency Range | 75kHz to 720kHz - allows optimization of efficiency vs. size; programmable via resistor on FREQ pin or external sync on PLLIN/SPREAD. |
| Gate Drive Voltage Options | 6V / 8V / 10V - selectable via DRVSET pin to match logic-level or standard-threshold MOSFETs without external level-shifting. |
| Spread Spectrum Modulation | ±15% frequency deviation at 4.5kHz - reduces peak EMI by spreading spectral energy, easing compliance with CISPR 25 Class 5. |
| Operating Junction Temp | –40°C to +125°C - qualified per AEC-Q100 Grade I, suitable for under-hood automotive environments. |
Pinout & Package
Package: 48-lead (7mm × 7mm) eLQFP with exposed thermal pad (Pin 49 = SGND), θJA = 20°C/W. Requires soldering of exposed pad to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SENSE1– / SENSE2– (Pins 1, 12) | Differential current sense reference | Accepts common-mode voltage up to 65V; supplies sleep-mode bias current when >3.2V, lowering input-referred IQ. |
| TG1/TG2, BG1/BG2 (Pins 41, 42, 23, 24, 37, 38) | N-channel MOSFET gate drivers | 100% duty-cycle capable; 2Ω pull-up/pull-down resistance; <90ns minimum on-time for high-VIN/low-VOUT ratios. |
| DRVSET (Pin 2) | DRVCC regulation programming | Selects DRVCC output: GND → 8V, INTVCC → 6V, open → 10V - directly sets gate drive strength and UVLO thresholds. |
| PLLIN/SPREAD (Pin 4) | Sync input / spread spectrum enable | High → enables ±15% dithering; external clock → forces phase alignment; low → fixed-frequency operation. |
| RUN1/RUN2 (Pins 39, 21) | Channel enable with hysteresis | 1.22V threshold with 120mV hysteresis - supports sequenced startup and fault recovery in multi-rail systems. |
| OVLO (Pin 9) | Overvoltage lockout input | 1.22V rising threshold disables both channels while preserving DRVCC/INTVCC - protects downstream loads during transients. |
Key Features
| Feature | Design Value |
|---|---|
| Interleaved dual-phase control | 180° phase shift reduces input ripple current by ~70%, enabling smaller CIN and lower ESR requirements. |
| Low-IQ dropout mode | 78μA total supply current with one channel active in dropout - maintains regulation during brownout without compromising standby power. |
| Programmable light-load operation | Selectable Burst Mode®, pulse-skipping, or forced continuous via MODE pin - balances efficiency vs. output ripple across 0.001–10A load range. |
| Robust protection suite | Integrated overvoltage crowbar, current foldback, and thermal shutdown - eliminates need for external fault-handling circuitry. |
| AEC-Q100 Grade I qualification | Validated for automotive applications including ADAS domain controllers and body electronics - meets stress test requirements for temperature, humidity, and vibration. |
Applications
| Automotive Infotainment Power | Industrial 48V DC-DC Conversion |
|---|---|
Use Scenario: Dual-rail power supply for head unit SoC (12V core, 5V I/O) operating from 9–16V battery with cold-crank tolerance. IC Role / Device Role / Timing Role: Dual synchronous buck controller managing interleaved 12V/5V outputs with soft-start sequencing and OVLO protection. Use Value: 16μA quiescent current prevents battery drain during vehicle sleep; spread spectrum meets CISPR 25 Class 5 radiated emissions limits. | Use Scenario: Step-down converter for PLC backplane powering FPGA, ADCs, and isolated interfaces from 48V telecom bus. IC Role / Device Role / Timing Role: High-efficiency dual controller delivering 12V @ 6A and 5V @ 10A with phase-shifted operation to minimize input capacitance. Use Value: 140V abs max input withstands 48V bus transients; 720kHz max frequency enables compact magnetics and fast transient response. |
| Military Vehicle Power Systems | Telecom Remote Radio Units |
Use Scenario: Ruggedized 28V-to-12V/3.3V converter in armored vehicle communications module exposed to –40°C to +85°C ambient. IC Role / Device Role / Timing Role: AEC-Q100 qualified dual controller with extended temp range, programmable gate drive, and DCR current sensing for reliability. Use Value: –40°C to +125°C junction rating ensures operation under extreme thermal cycling; low-IQ dropout sustains regulation during engine cranking dips. | Use Scenario: Base station RRH power management supplying 24V RF PA bias and 3.3V digital logic from 48V PoE-derived input. IC Role / Device Role / Timing Role: Dual-phase controller with EXTVCC switchover enabling efficient use of regulated 24V rail to power gate drivers. Use Value: EXTVCC LDO reduces driver losses by 30% vs. VIN-based drive; programmable frequency avoids sensitive IF bands in RF front-end. |
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-chip dual controller with integrated 60V MOSFETs; fixed 500kHz frequency; no spread spectrum; 30μA IQ. | Suitable for space-constrained 12V/5V supplies ≤3A/channel but lacks high-voltage capability and EMI mitigation features. | Choose MP2918GL-Z only for cost-sensitive, low-power applications where 140V input and CISPR 25 compliance are not required. |
| LTC3892-2IFE#PBF | Pin-compatible dual controller with identical 48-pin eLQFP; adds PMBus interface and enhanced telemetry; 25μA IQ; same 140V input rating. | Preferred for systems requiring real-time monitoring (VOUT, IOUT, temperature) and dynamic configuration via digital interface. | Select LTC3892-2IFE#PBF when telemetry, fault logging, or adaptive loop tuning are needed - otherwise LTC7810ILXE#PBF offers simpler analog control and lower BOM count. |
Compared with MP2918GL-Z, LTC7810ILXE#PBF delivers superior high-voltage resilience and EMI performance; compared with LTC3892-2IFE#PBF, it provides lower system cost and design simplicity where digital control is unnecessary.
Availability
LTC7810ILXE#PBF is available at Aetrix Electronics and suitable for automotive infotainment, industrial 48V DC-DC conversion, and military vehicle power systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LTC7810ILXE#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 power management semiconductors, serving industrial, automotive, communications, and aerospace markets.
The LTC7810ILXE#PBF belongs to the Power by Linear™ family of high-voltage DC/DC controllers, designed specifically for demanding automotive and industrial applications requiring wide input range, ultra-low quiescent current, and robust EMI performance.
FAQ
What is the absolute maximum input voltage rating for the LTC7810ILXE#PBF?
The LTC7810ILXE#PBF has an absolute maximum input voltage rating of 150V on the VIN pin, with recommended operating range from 4.5V to 140V. This 150V rating ensures robustness against load-dump transients in automotive 24V/48V systems and industrial surge events. Exceeding 150V may cause permanent damage per Absolute Maximum Ratings table.
Does the LTC7810ILXE#PBF support both RSENSE and inductor DCR current sensing?
Yes, the LTC7810ILXE#PBF supports both methods: precision RSENSE sensing with 75mV typical maximum threshold and matched ±5mV channel-to-channel offset, and lossless inductor DCR sensing using the SENSE+ and SENSE– pins with external RC network. Both modes are validated across the full –40°C to +125°C temperature range.
How does the spread spectrum feature of the LTC7810ILXE#PBF reduce EMI?
The LTC7810ILXE#PBF's spread spectrum modulates the switching frequency by ±15% around the center frequency at 4.5kHz, distributing radiated and conducted noise energy across a wider bandwidth. This lowers peak emissions by up to 10dB, helping designs meet CISPR 25 Class 5 limits without additional shielding or filtering components.
Can the LTC7810ILXE#PBF operate with only one channel enabled?
Yes, the LTC7810ILXE#PBF supports single-channel operation: tie RUN2 to GND to disable Channel 2 while maintaining full functionality on Channel 1. In this mode, quiescent current drops to 78μA in dropout and 16μA in regulation - ideal for partial-power states in automotive subsystems.
What is the purpose of the REGSD pin on the LTC7810ILXE#PBF?
The REGSD pin on the LTC7810ILXE#PBF implements a regulator shutdown timer that limits linear regulator conduction time when EXTVCC is below its switchover threshold. A capacitor from REGSD to GND sets the timeout (tREGSD = 1.2·CREGSD/10μA); exceeding 1.2V triggers 29×tREGSD shutdown, enforcing a 3.3% "on" duty cycle to prevent thermal overload.
LTC7810ILXE#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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-eLQFP (7x7)
LTC7810ILXE#PBF FAQ
1.How can I place an order for LTC7810ILXE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC7810ILXE#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 LTC7810ILXE#PBF reliable?
The price and inventory of LTC7810ILXE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC7810ILXE#PBF is usually 5 days.
3.What payment methods are accepted for LTC7810ILXE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC7810ILXE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC7810ILXE#PBF?
LTC7810ILXE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC7810ILXE#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 LTC7810ILXE#PBF?
For technical support, including LTC7810ILXE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC7810ILXE#PBF requirements.
6.How does Aetrix verify that LTC7810ILXE#PBF is sourced from the original manufacturer or authorized distributors?
All LTC7810ILXE#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 LTC7810ILXE#PBF meets industry standards.
7.What is the process for return or replacement of LTC7810ILXE#PBF?
All LTC7810ILXE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC7810ILXE#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 LTC7810ILXE#PBF part is unused and in its original packaging.
Return procedure for LTC7810ILXE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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