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Analog Devices Inc. LTC7804HMSE#TRPBF
- Part No.:
- LTC7804HMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC7804HMSE#TRPBF.pdf
- Description:
- LOW IQ SYNCH BOOST CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:1,508
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Product details
Overview
LTC7804HMSE#TRPBF from Analog Devices is a high-performance synchronous boost DC/DC controller driving all-N-channel MOSFET stages, supporting 4.5V–40V input and up to 40V output with 14μA no-load quiescent current, spread spectrum EMI reduction, and 100kHz–3MHz programmable switching frequency - used in automotive infotainment power supplies requiring high efficiency and low EMI.
For engineers reviewing the LTC7804HMSE#TRPBF datasheet, LTC7804HMSE#TRPBF pinout, LTC7804HMSE#TRPBF application, or LTC7804HMSE#TRPBF equivalent, key selection criteria include its AEC-Q100 qualification, 150°C junction rating, Pass-Thru™ 100% duty cycle capability, RSENSE/DCR current sensing flexibility, and phase-lockable architecture for synchronized multi-rail systems.
Technical Context
The LTC7804HMSE#TRPBF implements a constant-frequency peak-current-mode control architecture with dual gate drivers (TG/BG), integrated 5.15V INTVCC LDO, and selectable light-load operation modes (Burst Mode®, pulse-skipping, or forced continuous conduction). Its OPTI-LOOP compensation supports wide output capacitance/ESR ranges.
Spread spectrum dithering is enabled via PLLIN/SPREAD pin tied to INTVCC, reducing peak conducted/radiated noise; frequency synchronization is achieved by applying an external clock to PLLIN/SPREAD, locking BG edge timing. The controller supports VIN as low as 1V post-startup when biased from VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 40V operating; starts from 1V after startup when VBIAS supplied from VOUT - enables ultra-low-input battery backup operation. |
| Output Voltage Range | Up to 40V regulated output - supports high-voltage LED drivers and industrial sensor interfaces. |
| No-Load Quiescent Current | 14μA typical - extends runtime in always-on automotive modules and IoT edge nodes. |
| Switching Frequency | Programmable 100kHz–3MHz; phase-lockable - allows EMI band avoidance and multi-phase synchronization. |
| Junction Temperature Range | −40°C to +150°C - qualified per AEC-Q100 Grade H for under-hood automotive applications. |
| Current Sensing | RSENSE or inductor DCR - provides design flexibility for loss vs. accuracy trade-offs in cost-sensitive layouts. |
| Light-Load Modes | Burst Mode®, pulse-skipping, or forced continuous - enables optimal efficiency across 0.01mA–6A load range without external circuitry. |
Pinout & Package
16-pin MSOP package with exposed thermal pad (Pin 17 = GND), optimized for high-power density and thermal performance in automotive and industrial PCBs. Pin pitch: 0.5mm; body size: 3mm × 4.9mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SS (Pin 1) | Soft-Start Control Input | Internal 12.5μA pull-up charges external capacitor to ramp VFB reference linearly - prevents inrush current during power-up. |
| SENSE− (Pin 2) | Negative Current Sense Input | Differential input to current comparator; referenced to SENSE+ - enables accurate current limiting with RSENSE or DCR sensing. |
| SENSE+ (Pin 3) | Positive Current Sense Input | Supplies bias current to comparator when > INTVCC - supports high-side sensing and wide common-mode range (up to 40V). |
| VFB (Pin 4) | Feedback Voltage Input | Compares output divider voltage to 1.200V internal reference - sets regulated output with ±1% accuracy over temperature. |
| ITH (Pin 5) | Error Amplifier Output / Compensation Node | Controls peak inductor current threshold; connects to RC network for loop stability - enables OPTI-LOOP tuning for diverse output caps. |
| RUN (Pin 6) | Enable/Shutdown Control | 1.2V threshold disables switching; <0.7V forces 1.2μA shutdown - supports UVLO implementation and system-level power sequencing. |
| FREQ (Pin 7) | Frequency Programming Input | Resistor-to-GND sets 100kHz–3MHz; tie to INTVCC for 2.25MHz fixed - eliminates external oscillator while enabling precise EMI management. |
| PLLIN/SPREAD (Pin 8) | Synchronization & Spread Spectrum Control | Tie to INTVCC for spread spectrum; apply external clock for phase-lock - reduces peak EMI by >10dB without filter redesign. |
| MODE (Pin 9) | Light-Load Operation Mode Select | GND = Burst Mode®; INTVCC = forced CCM; 100k-to-INTVCC = pulse-skipping - selects efficiency vs. output ripple trade-off autonomously. |
| INTVCC (Pin 10) | Internal 5.15V LDO Output | Powers gate drivers and analog circuits; requires ≥4.7μF ceramic decoupling - ensures stable operation independent of VBIAS transients. |
| EXTVCC (Pin 11) | External Bias Input for INTVCC LDO | Enables bypass of VBIAS LDO when >4.7V - improves efficiency by sourcing INTVCC from downstream converter output. |
| VBIAS (Pin 12) | Main Bias Supply | Accepts 4.5V–40V; powers internal LDOs and logic - allows flexible supply routing (VIN, VOUT, or auxiliary rail). |
| BG (Pin 13) | Bottom N-MOSFET Gate Driver | 0V to INTVCC swing; 1.5Ω pull-down - drives low-side FET with fast turn-off for minimal shoot-through risk. |
| BOOST (Pin 14) | Bootstrap Supply for Top-Side Driver | Connects to SW via capacitor; Schottky diode to INTVCC - sustains TG drive during high-duty-cycle operation. |
| TG (Pin 15) | Top N-MOSFET Gate Driver | Floating output with INTVCC swing superimposed on SW node - enables 100% duty cycle (Pass-Thru™) for VIN > VOUT scenarios. |
| SW (Pin 16) | Switch Node Connection | Connects to inductor and BOOST capacitor - high dv/dt node requiring tight layout and Kelvin sensing for stability. |
| GND (Pin 17) | Power & Signal Ground | Exposed thermal pad; must be soldered to PCB plane - provides primary thermal path and low-impedance return for high-frequency currents. |
Key Features
| Feature | Design Value |
|---|---|
| Spread Spectrum Modulation | Reduces peak radiated/conducted EMI by spreading energy across 0–20% bandwidth - simplifies EMC certification for automotive Tier-1 modules. |
| Pass-Thru™ 100% Duty Cycle | Enables seamless transition when VIN exceeds VOUT - eliminates dropout in battery-powered systems during charge/discharge cycles. |
| AEC-Q100 Grade H Qualification | Validated for −40°C to +150°C operation with lifetime reliability testing - meets functional safety requirements for ASIL-B power domains. |
| OPTI-LOOP Compensation | Allows stable loop response with ceramic, polymer, or electrolytic output capacitors - eliminates need for custom compensation per cap type. |
| Low Shutdown IQ (1.2μA) | Minimizes battery drain during vehicle sleep mode - critical for 15-year automotive service life compliance. |
| Programmable Light-Load Modes | Three distinct modes (Burst, pulse-skipping, CCM) selected via single MODE pin - avoids external mode-control logic in space-constrained designs. |
Applications
| Automotive Infotainment Power | Industrial Sensor Interface Supply |
|---|---|
Use Scenario: Powers 24V display backlight and audio amplifier from 12V vehicle battery with strict CISPR 25 Class 5 EMI limits. IC Role / Device Role / Timing Role: Synchronous boost controller managing high-efficiency voltage step-up and EMI-constrained switching. Use Value: Spread spectrum and phase-lock capability meet automotive EMC requirements without added shielding or filtering components. |
Use Scenario: Generates stable 36V bias for piezoelectric sensors in factory automation equipment operating across wide ambient temperatures. IC Role / Device Role / Timing Role: High-voltage, high-reliability boost controller delivering regulated output under variable load and input conditions. Use Value: AEC-Q100 Grade H rating and 150°C junction support uninterrupted operation in uncooled enclosures near motors or drives. |
| Avionics Cockpit Display Supply | Telecom Remote Radio Unit (RRU) |
Use Scenario: Supplies 28V avionics bus from 24V aircraft main power, requiring fault tolerance and rapid transient recovery during engine start transients. IC Role / Device Role / Timing Role: Robust boost controller with fast-loop compensation and wide input range handling brownout conditions. Use Value: OPTI-LOOP and 14μA quiescent current ensure stable regulation and extended hold-up time during 100ms input dips. |
Use Scenario: Provides 40V intermediate rail for GaN PA bias in outdoor 5G RRUs exposed to −40°C to +85°C ambient extremes. IC Role / Device Role / Timing Role: High-efficiency, high-voltage boost controller with thermal robustness and low-noise operation. Use Value: Pass-Thru™ mode maintains output during input surges; spread spectrum minimizes interference with sensitive RF front-end receivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8337EMSE#TRPBF | Fixed 2MHz frequency, no spread spectrum, lower max VIN (30V), no phase-lock capability | Targeted at compact, cost-sensitive consumer power supplies where EMI is less stringent | Choose when board space is critical and EMI requirements are Class B only; not suitable for automotive AEC-Q100 systems. |
| TPS61088RHLR | Integrated MOSFETs (not controller), 12V max VOUT, higher IQ (25μA), no AEC-Q100 qualification | Used in portable electronics with moderate voltage requirements and no automotive qualification needs | Choose for simplified design with fewer external components; avoid where >12V output or automotive reliability is required. |
Compared with LT8337EMSE#TRPBF and TPS61088RHLR, the LTC7804HMSE#TRPBF uniquely combines AEC-Q100 Grade H, spread spectrum, phase-lock, and 40V output capability - making it the only option for high-reliability, high-voltage, EMI-critical automotive and industrial boost applications.
Availability
LTC7804HMSE#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and avionics display power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LTC7804HMSE#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 precision, industrial, automotive, and communications markets.
The LTC7804 belongs to Analog Devices' Power by Linear™ controller family, designed specifically for high-efficiency, high-reliability DC/DC conversion in demanding automotive and industrial environments.
FAQ
What is the maximum output voltage supported by the LTC7804HMSE#TRPBF?
The LTC7804HMSE#TRPBF supports regulated output voltages up to 40V. This is achieved through external resistor feedback scaling at the VFB pin and is validated across the full −40°C to +150°C junction temperature range. The controller's internal error amplifier reference remains stable at 1.200V ±1%, enabling precise high-voltage regulation for applications like LED drivers and industrial sensors.
Does the LTC7804HMSE#TRPBF require external MOSFETs, and what are the driver specifications?
Yes, the LTC7804HMSE#TRPBF is a controller-only device and requires external N-channel MOSFETs. Its TG and BG drivers deliver 3.0Ω pull-up and 1.5Ω pull-down resistance, with 25ns rise/15ns fall times into 3300pF loads. These specs enable efficient driving of high-side and low-side FETs in synchronous boost topologies up to 3MHz switching frequency.
How does the spread spectrum feature of the LTC7804HMSE#TRPBF reduce EMI?
The LTC7804HMSE#TRPBF reduces peak conducted and radiated EMI by modulating its switching frequency ±10% around the nominal value when PLLIN/SPREAD is tied to INTVCC. This spreads energy across a wider bandwidth, lowering spectral peaks by up to 10dB - directly easing compliance with CISPR 25 and EN 55022 automotive and industrial EMI standards without added filtering.
Can the LTC7804HMSE#TRPBF operate with input voltage below 4.5V?
Yes - the LTC7804HMSE#TRPBF can operate with input voltage as low as 1V after startup when VBIAS is supplied from the boost output rail. During initial startup, it requires ≥4.5V on VBIAS to bootstrap operation; once running, it sustains regulation down to 1V input, enabling use in battery-powered systems with deep discharge profiles.
What is the purpose of the EXTVCC pin on the LTC7804HMSE#TRPBF?
The EXTVCC pin on the LTC7804HMSE#TRPBF allows an external 4.7V–30V supply to power the internal 5.15V INTVCC LDO, bypassing the VBIAS-based regulator. This improves system efficiency by sourcing gate drive and control power from a downstream high-efficiency converter output rather than dissipating heat in the VBIAS LDO - especially valuable in multi-rail power architectures.
LTC7804HMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 40V
- Frequency - Switching:
- 100kHz ~ 3MHz
- Duty Cycle (Max):
- 100%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC7804HMSE#TRPBF FAQ
1.How can I place an order for LTC7804HMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC7804HMSE#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 LTC7804HMSE#TRPBF reliable?
The price and inventory of LTC7804HMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC7804HMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC7804HMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC7804HMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC7804HMSE#TRPBF?
LTC7804HMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC7804HMSE#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 LTC7804HMSE#TRPBF?
For technical support, including LTC7804HMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC7804HMSE#TRPBF requirements.
6.How does Aetrix verify that LTC7804HMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC7804HMSE#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 LTC7804HMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC7804HMSE#TRPBF?
All LTC7804HMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC7804HMSE#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 LTC7804HMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC7804HMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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