My Inquiry
My Account
Analog Devices Inc. LT8580HMS8E#TRPBF
- Part No.:
- LT8580HMS8E#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8580HMS8E#TRPBF.pdf
- Description:
- IC REG BOOST CUK ADJ 1.2A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,737
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT8580HMS8E#TRPBF from Analog Devices is a PWM DC/DC converter with an integrated 1A, 65V NPN power switch, configurable as boost, SEPIC, or inverting topology. It operates from 2.55V to 40V input, delivers up to 1.2A output current, supports 200kHz–1.5MHz switching frequency, and features soft-start, synchronization, and adjustable UVLO - used in TFT-LCD bias supplies and GPS receivers.
For engineers reviewing the LT8580HMS8E#TRPBF datasheet, LT8580HMS8E#TRPBF pinout, LT8580HMS8E#TRPBF application, or LT8580HMS8E#TRPBF equivalent, key selection criteria include its 65V switch rating, thermally enhanced MSOP-8 package rated for –40°C to 150°C, AEC-Q100 qualification, 400mV VCE(SAT) at 0.75A, and dual feedback architecture supporting both positive and negative output regulation.
Technical Context
The LT8580HMS8E#TRPBF uses constant-frequency current-mode control with internal slope compensation to ensure stability at duty cycles >50%. Its dual-amplifier FBX architecture enables seamless reconfiguration between noninverting (boost/SEPIC) and inverting topologies by changing only external resistor connections - no layout or IC replacement required.
It integrates frequency foldback during soft-start to reduce minimum on-time and improve startup control, plus high-gain SHDN circuitry accepting slowly ramping enable signals. The VC pin provides direct access to the error amplifier output for custom loop compensation using RC networks tied to GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.55V to 40V - supports wide-input industrial and automotive rails without pre-regulation. |
| Switch Rating | 1A, 65V NPN - enables high-voltage boost and SEPIC designs up to 60V output with margin. |
| Switch VCE(SAT) | 400mV at 0.75A - reduces conduction loss and thermal stress in high-current operation. |
| Switching Frequency | 200kHz to 1.5MHz - adjustable via RT resistor or external SYNC clock for EMI optimization. |
| Feedback Reference | 1.204V (noninverting) or 3mV (inverting) - enables precise output regulation in both polarity configurations. |
| Operating Temp Range | –40°C to +150°C - qualified per AEC-Q100 Grade H for under-hood automotive use. |
| Quiescent Current | 1.2mA typical - minimizes standby power in always-on systems like GPS receivers. |
| Soft-Start Charging | 6µA typical - sets controlled ramp rate with external SS capacitor (100nF–1µF). |
Pinout & Package
LT8580HMS8E#TRPBF is housed in an 8-lead plastic MSOP package (MS8E) with exposed pad (Pin 9 = GND), θJA = 35°C/W to 40°C/W. The exposed pad must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FBX (Pin 1) | Positive/Negative Feedback Input | Accepts either 1.204V reference (boost/SEPIC) or 3mV reference (inverting); sets output voltage via single RFBX. |
| VC (Pin 2) | Error Amplifier Output | Provides access to compensation node; requires RC network to GND for loop stability. |
| VIN (Pin 3) | Main Power Input | Supplies internal circuitry and switch driver; requires local ceramic bypass (≥1µF). |
| SW (Pin 4) | Switch Collector Node | Connects to external inductor/diode; high di/dt node - minimize trace area to reduce EMI. |
| SHDN (Pin 5) | Enable/UVLO Control | High-gain input enabling slow-ramping enable signals; 1.21V–1.40V hysteresis window. |
| RT (Pin 6) | Oscillator Timing | Resistor-to-ground sets free-running frequency; also accepts external SYNC clock (Pin 8). |
| SS (Pin 7) | Soft-Start Control | Charged by 280k internal resistor; external capacitor sets startup ramp time and inrush control. |
| SYNC (Pin 8) | External Clock Input | Accepts 0.4V–1.3V logic-level clock; overrides internal oscillator when driven above threshold. |
| GND (Pin 9) | Power & Signal Ground | Exposed thermal pad - must be soldered to PCB ground plane for thermal dissipation and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Topology Support | Single IC supports boost, SEPIC, and inverting converters via FBX connection - eliminates BOM variants. |
| Adjustable UVLO Threshold | User-programmable via resistor divider on SHDN pin - enables system-level brown-out protection. |
| Frequency Foldback During Start-up | Reduces fSW to 1/6 nominal when FBX is between 300mV–920mV - improves controllability at light loads. |
| Thermally Enhanced MSOP-8 | θJA ≤ 40°C/W with exposed pad soldered - enables 1.2A operation at 150°C junction temperature. |
| AEC-Q100 Qualified | Grade H (–40°C to +150°C) - validated for automotive power supply applications including infotainment and ADAS sensors. |
| Single Resistor Output Setting | RFBX = |VOUT − VFBX| / 83.3µA - simplifies design across all three topologies with no additional components. |
Applications
| TFT-LCD Bias Supply | GPS Receiver Power |
|---|---|
Use Scenario: Generating ±15V bias rails from a 3.3V or 5V battery source for LCD column/row drivers in automotive displays. IC Role / Device Role / Timing Role: LT8580HMS8E#TRPBF operates in inverting configuration to generate negative rail and boost mode for positive rail - dual-output capability from one IC. Use Value: Eliminates need for separate inverting and boost ICs; 65V switch rating ensures margin against load dump transients in vehicle environments. | Use Scenario: Providing stable 3.3V or 5V local supply to GPS RF front-end and baseband ICs in portable navigation devices. IC Role / Device Role / Timing Role: LT8580HMS8E#TRPBF functions as a high-efficiency boost converter with tight line/load regulation and low quiescent current. Use Value: 1.2mA quiescent current extends battery life; 200kHz–1.5MHz frequency range allows EMI filtering around sensitive GNSS bands. |
| DSL Modem Local Supply | VFD Bias Supply |
Use Scenario: Generating isolated 12V–24V rails for DSL line drivers and PHY interfaces in residential gateways. IC Role / Device Role / Timing Role: LT8580HMS8E#TRPBF configured as SEPIC to maintain regulation during input dips (e.g., PoE brownouts) while providing inherent input-output isolation. Use Value: Input can span output voltage (VIN = VOUT possible); no DC path between input and output prevents fault propagation. | Use Scenario: Delivering high-voltage bias (up to 40V) to vacuum fluorescent display segments in industrial HMIs and instrumentation panels. IC Role / Device Role / Timing Role: LT8580HMS8E#TRPBF operates in boost mode with external diode and capacitor multiplier to achieve >30V outputs from 5V–12V inputs. Use Value: 65V switch rating and 1.2A current limit support high-impedance VFD segment driving with minimal external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3789EMSE#PBF | 4-switch synchronous buck-boost controller; requires external MOSFETs; no integrated switch. | Supports higher efficiency (>95%) and higher power (>10W); not pin-compatible. | Select when efficiency >92% and >3A output are required; adds complexity and cost. |
| LT8330EMSE#TRPBF | 60V, 1.5A monolithic boost/SEPIC/inverting converter; 2.7V–40V input; different pinout and compensation scheme. | Higher current rating and lower quiescent current (25µA); lacks SYNC and frequency foldback. | Prefer for ultra-low-IQ battery-powered systems where 1.5A output is needed and SYNC is unnecessary. |
Compared with LTC3789EMSE#PBF and LT8330EMSE#TRPBF, the LT8580HMS8E#TRPBF offers integrated 65V/1A switching with AEC-Q100 qualification and dual-feedback flexibility - making it optimal for space-constrained, high-reliability automotive and industrial bias supplies where moderate power and configurability outweigh peak efficiency needs.
Availability
LT8580HMS8E#TRPBF is available at Aetrix Electronics and suitable for TFT-LCD bias supplies, GPS receiver power management, and DSL modem local supplies requiring stable component supply across automotive and industrial temperature ranges.
Supply support for LT8580HMS8E#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 industrial, automotive, communications, and healthcare markets.
The LT8580 product line delivers robust, thermally optimized DC/DC converters for high-voltage bias generation in automotive displays, precision instrumentation, and telecom infrastructure - emphasizing configurability, reliability, and AEC-Q100 compliance.
FAQ
What topologies does the LT8580HMS8E#TRPBF support?
The LT8580HMS8E#TRPBF supports three distinct DC/DC topologies: boost, SEPIC, and inverting - selected solely by how the external RFBX resistor connects to the FBX pin. In boost and SEPIC modes, FBX is referenced to the 1.204V internal positive reference; in inverting mode, it's referenced to the 3mV negative reference. No hardware changes beyond resistor routing are needed to switch configurations.
What is the maximum output voltage achievable with LT8580HMS8E#TRPBF?
The LT8580HMS8E#TRPBF has a 65V-rated internal NPN switch, allowing output voltages up to approximately 60V in boost configuration (accounting for diode drop and VCE(SAT)). In SEPIC or inverting topologies, output voltage is limited by external component ratings - particularly the output capacitor and diode - but the IC itself supports ≥60V operation when properly designed with margin.
How does the LT8580HMS8E#TRPBF handle thermal management in automotive applications?
The LT8580HMS8E#TRPBF is qualified to AEC-Q100 Grade H (–40°C to +150°C) and uses an MSOP-8 package with an exposed thermal pad (Pin 9 = GND). When soldered to a 2–4 cm² PCB copper pour, its θJA is 35°C/W to 40°C/W - enabling full 1.2A output current at 150°C junction temperature. Internal thermal shutdown activates at ~165°C and resets at ~160°C with full soft-start restart.
Can the LT8580HMS8E#TRPBF synchronize to an external clock, and what are the requirements?
Yes, the LT8580HMS8E#TRPBF accepts external synchronization via the SYNC pin (Pin 8). The clock must have a high level ≥1.3V, low level ≤0.4V, and duty cycle between 35% and 65%. The recommended minimum fSYNC/fOSC ratio is 3/4. Driving SYNC below 0.4V reverts the device to its internal free-running oscillator set by the RT resistor.
What is the purpose of the dual-reference FBX pin in LT8580HMS8E#TRPBF?
The FBX pin in LT8580HMS8E#TRPBF serves two roles: it references either a 1.204V internal positive reference (for boost/SEPIC) or a 3mV internal negative reference (for inverting), depending on external resistor connection. This dual-reference architecture enables single-IC support for both polarities without external op-amps or level shifters - reducing BOM count and board area while maintaining precise regulation in each mode.
LT8580HMS8E#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Boost, Cuk, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.9V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 65V (Switch)
- Current - Output:
- 1.2A (Switch)
- Frequency - Switching:
- 200kHz ~ 1.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP-EP
LT8580HMS8E#TRPBF FAQ
1.How can I place an order for LT8580HMS8E#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8580HMS8E#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 LT8580HMS8E#TRPBF reliable?
The price and inventory of LT8580HMS8E#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8580HMS8E#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8580HMS8E#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8580HMS8E#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8580HMS8E#TRPBF?
LT8580HMS8E#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8580HMS8E#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 LT8580HMS8E#TRPBF?
For technical support, including LT8580HMS8E#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8580HMS8E#TRPBF requirements.
6.How does Aetrix verify that LT8580HMS8E#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8580HMS8E#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 LT8580HMS8E#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8580HMS8E#TRPBF?
All LT8580HMS8E#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8580HMS8E#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 LT8580HMS8E#TRPBF part is unused and in its original packaging.
Return procedure for LT8580HMS8E#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT8580HMS8E#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…
