My Inquiry
My Account
Analog Devices Inc. LTM8008HV#PBF
- Part No.:
- LTM8008HV#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Converters
- Package:
- 121-BLGA Module
- Datasheet:
-
LTM8008HV#PBF.pdf
- Description:
- DC DC CONVERTER 5V 5V 5V 5V
- Quantity:
- Payment:
- Shipping:
Inventory:4,375
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTM8008HV#PBF from Analog Devices (formerly Linear Technology) is a 72V-input, six-output µModule SEPIC DC/DC regulator with integrated high-performance linear post-regulators: one 5V/500mA, one 3.3V/300mA, and four 5V/150mA outputs. Its internal 5.6V SEPIC output powers all LDOs, enabling stable operation across 3V–72V input range in automotive and industrial power systems requiring multiple isolated low-noise rails.
For engineers reviewing the LTM8008HV#PBF datasheet, LTM8008HV#PBF pinout, LTM8008HV#PBF application, or LTM8008HV#PBF equivalent, key selection considerations include its –40°C to 150°C H-grade operating temperature, programmable 100kHz–1MHz switching frequency via RT resistor, synchronized clock input capability, and thermal lockout protection at 165°C.
Technical Context
The LTM8008HV#PBF integrates a fixed-frequency current-mode SEPIC controller with six independent linear post-regulators. Its 8.2A internal MOSFET switch current limit and 220ns minimum on/off times support robust transient response across wide input (3V–72V) and load conditions, while the VC compensation pin enables loop stability tuning for varying topologies and component values.
Control architecture includes RUN pin with 1.21V falling threshold and programmable hysteresis, SS pin with 10µA pull-up for soft-start timing control, and SYNC pin accepting external clocks up to 1MHz. The device uses SPV as both internal SEPIC feedback node and LDO input rail, eliminating external intermediate regulation stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 72V - supports wide-range industrial and automotive battery inputs, including cold-crank and load-dump scenarios. |
| SEPIC Output (SPV) | 5.6V fixed - optimized voltage for efficiency and ripple rejection across all six LDOs. |
| VOUT1 | 5V ±1% at 500mA - primary high-current rail with 20µVRMS noise (100Hz–100kHz). |
| VOUT2–VOUT5 | 5V ±1% at 150mA each - four auxiliary rails with individual overcurrent and reverse-voltage protection. |
| VOUT6 | 3.3V ±1% at 300mA - dedicated low-voltage rail with 20µVRMS noise and 320mA current limit. |
| Switching Frequency | 100kHz to 1MHz - set by single RT resistor; supports synchronization to external clock for EMI reduction. |
| Operating Temperature | –40°C to 150°C (H-grade) - qualified for under-hood automotive and high-temperature industrial environments. |
Pinout & Package
The LTM8008HV#PBF is housed in a thermally enhanced 121-lead LGA package (15mm × 15mm × 2.82mm) with exposed GND pads for bottom-side heat dissipation. Thermal resistance θJCbottom = 0.5°C/W enables high-power operation when mounted on multilayer PCBs with thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (K4, L4) | Main input supply | Accepts 3V–72V; requires ≥0.22µF local bypass; powers INTVCC during startup before SPV is established. |
| SPV (A1, B1, A11, B11) | SEPIC regulated output | Internal 5.6V rail powering all six LDOs; must be bypassed with ≥22µF per pin group. |
| VOUT1 (Bank 2) | Primary LDO output | 5V/500mA rail with 520mA current limit; requires ≥22µF local capacitance. |
| VOUT2–VOUT5 (A10/B10, A8/B8, A6/B6, A5/B5) | Auxiliary LDO outputs | Four independent 5V/150mA rails, each with 160mA current limit and ≥10µF bypass. |
| VOUT6 (A2, A3, B2) | Secondary LDO output | 3.3V/300mA rail with 320mA current limit; requires ≥10µF local capacitance. |
| RUN (F1, F2) | Enable/UVLO control | 1.21V falling threshold with external hysteresis; pulls <70µA when disabled. |
| RT (J1, J2) | Frequency programming | Resistor-to-GND sets switching frequency from 100kHz to 1MHz; no operation without RT. |
| SYNC (K3, L3) | External clock sync | Accepts digital clock up to 1MHz; RT must be set 20% lower than SYNC frequency. |
| SS (H1, H2) | Soft-start control | 10µA pull-up to 2.5V; controls VC clamp to limit inrush current during startup or fault recovery. |
| VC (G1, G2) | Error amplifier compensation | Connect RC network (2.5k–50kΩ + 1nF–47nF) for loop stability; critical for transient response. |
| SW (Bank 3) | SEPIC switch node | Drain of internal 8.2A MOSFET; connects to coupled inductor and flying capacitor. |
| GND (Bank 1) | Power and thermal ground | Primary heat path; requires direct connection to large copper plane with thermal vias. |
| INTVCC (E1, E2) | Internal bias supply | Regulated rail derived from VIN/SPV; requires ≥4.7µF ceramic bypass adjacent to pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated SEPIC + Six LDOs | Eliminates need for discrete intermediate buck stage and six external regulators - reduces BOM count and layout area. |
| 150°C Junction Temperature Rating | Enables continuous operation in under-hood automotive and high-ambient industrial environments without derating. |
| Programmable Soft-Start | SS pin allows precise control of output ramp time using external capacitor - prevents inrush damage to downstream loads. |
| Thermal Lockout Protection | Shuts down at 165°C (typical); restarts after 5°C cooldown - prevents permanent die damage during sustained overload. |
| Synchronization Capability | SYNC pin accepts external clock signals to align switching edges - essential for multi-rail systems requiring EMI coherence. |
Applications
| Automotive Power Distribution | Industrial Sensor Hub |
|---|---|
Use Scenario: Centralized power management for ADAS camera modules, radar units, and infotainment displays in vehicles with 12V/24V battery systems experiencing cold-crank (down to 3V) and load-dump transients (up to 72V). IC Role / Device Role / Timing Role: Primary power subsystem delivering six independent, low-noise rails - VOUT1 powers image signal processors, VOUT6 supplies microcontrollers, and VOUT2–VOUT5 feed sensor interfaces and communication ICs. Use Value: Single-package solution eliminates discrete DC/DC + LDO combinations, reducing board space by >40% and improving thermal coupling between regulators for consistent voltage accuracy. | Use Scenario: Powering distributed I/O modules in factory automation systems where ambient temperatures reach 85°C and EMI-sensitive analog sensors require ultra-low-noise supplies. IC Role / Device Role / Timing Role: High-integration power module generating clean 5V and 3.3V rails for precision ADCs, isolated RS-485 transceivers, and ARM Cortex-M microcontrollers. Use Value: 20µVRMS output noise and internal thermal monitoring ensure stable sensor readings and prevent firmware crashes due to undervoltage resets. |
| Telecom Remote Radio Unit | Avionics Data Acquisition |
Use Scenario: Compact base station remote radio head requiring multiple isolated rails from a 48V backplane, with strict EMI compliance and thermal constraints in sealed enclosures. IC Role / Device Role / Timing Role: Core power converter supplying 5V for FPGA configuration, 3.3V for RF front-end biasing, and four 5V rails for digital isolators and DACs. Use Value: Synchronization capability allows alignment of switching edges across multiple LTM8008HV#PBF units - reducing peak current draw and easing filter design. | Use Scenario: Flight data recorder and inertial measurement unit (IMU) electronics operating in extended temperature ranges (–40°C to +85°C) with stringent reliability requirements. IC Role / Device Role / Timing Role: Radiation-tolerant (by design heritage) power manager delivering fault-isolated 5V and 3.3V rails to MEMS accelerometers, gyroscopes, and non-volatile memory. Use Value: Individual overcurrent and reverse-voltage protection per LDO prevents single-point failure propagation - meeting DO-160 lightning-induced transient immunity standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail DC/DC regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTM8008IV#PBF | H-grade (–40°C to 150°C) vs. I-grade (–40°C to 125°C); identical electrical specs and pinout. | Required for under-hood automotive or high-temperature industrial use where junction exceeds 125°C. | Select LTM8008HV#PBF when full H-grade thermal rating is mandatory; LTM8008IV#PBF suffices for less demanding thermal environments. |
| LTM4644IY#PBF | Quad 3A buck µModule (no SEPIC topology); 40V max input; no integrated LDOs - requires external post-regulation. | Better suited for high-current, low-noise applications where input stays below 40V and discrete LDOs are acceptable. | Choose LTM4644IY#PBF only if input voltage never exceeds 40V and system can accommodate separate LDOs for noise-sensitive rails. |
Compared with LTM8008IV#PBF, the LTM8008HV#PBF offers identical functionality but guarantees operation up to 150°C internal temperature - critical for automotive engine compartments. Against LTM4644IY#PBF, it provides integrated SEPIC + LDO architecture enabling true 72V input tolerance and lower system-level noise without external regulators.
Availability
LTM8008HV#PBF is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor hubs, telecom remote radio units, and avionics data acquisition systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for LTM8008HV#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 acquired Linear Technology in 2017 and maintains the µModule product line as high-integration power solutions combining magnetics, MOSFETs, controllers, and support circuitry in compact packages.
The LTM8008HV#PBF belongs to the µModule SEPIC regulator family designed specifically for harsh-environment applications needing wide-input DC/DC conversion with multiple low-noise, thermally robust linear outputs.
FAQ
What is the maximum input voltage rating for the LTM8008HV#PBF?
The LTM8008HV#PBF has an absolute maximum input voltage rating of 80V, with guaranteed operation across 3V to 72V. This wide range supports automotive battery systems during cold-crank (down to 3V) and load-dump events (up to 72V), making the LTM8008HV#PBF suitable for under-hood and industrial power applications where input transients are common.
Does the LTM8008HV#PBF require external components to operate?
Yes, the LTM8008HV#PBF requires several external components: a coupled inductor (e.g., Coilcraft MSD1278T-472ML), flying capacitor, Schottky diode (e.g., SBR3U100LP-7), input/output capacitors, and resistors for RT (frequency setting), RUN (UVLO hysteresis), and SS (soft-start timing). These are specified in the datasheet's typical application circuit and cannot be omitted for functional operation of the LTM8008HV#PBF.
How does thermal management work on the LTM8008HV#PBF?
The LTM8008HV#PBF relies on its exposed GND pads (Bank 1) as the primary thermal path, with θJCbottom = 0.5°C/W. Effective thermal management requires mounting on a PCB with generous copper pour and multiple thermal vias connecting to internal ground planes. The device includes thermal lockout that disables switching at 165°C (typical) and re-enables after a 5°C cooldown - a critical safety feature built into the LTM8008HV#PBF.
Can the LTM8008HV#PBF synchronize its switching frequency to an external clock?
Yes, the LTM8008HV#PBF supports synchronization via its SYNC pin (K3, L3), which accepts digital clock signals up to 1MHz. When using SYNC, the RT resistor must be selected to set the internal oscillator frequency 20% lower than the external clock frequency. This capability allows multiple LTM8008HV#PBF units to operate with aligned switching edges - reducing system-level EMI and simplifying filtering in dense power architectures.
What protection features are integrated into the LTM8008HV#PBF?
The LTM8008HV#PBF integrates comprehensive protection: input undervoltage lockout with programmable hysteresis (via RUN pin), soft-start with fault-triggered reset (SS pin), overvoltage lockout on SPV (8% above setpoint), thermal lockout at 165°C, and individual overcurrent, reverse-voltage, and thermal protection for each of the six LDO outputs. These features ensure robust operation of the LTM8008HV#PBF in mission-critical automotive and industrial systems.
LTM8008HV#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 121-BLGA Module
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 6
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 72V
- Voltage - Output 1:
- 5V
- Voltage - Output 2:
- 5V
- Voltage - Output 3:
- 5V
- Voltage - Output 4:
- 5V
- Current - Output (Max):
- 500mA, 150mA, 150mA, 150mA
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- -
- Operating Temperature:
- -40°C ~ 150°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 121-LGA (15x15)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
LTM8008HV#PBF FAQ
1.How can I place an order for LTM8008HV#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM8008HV#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 LTM8008HV#PBF reliable?
The price and inventory of LTM8008HV#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM8008HV#PBF is usually 5 days.
3.What payment methods are accepted for LTM8008HV#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM8008HV#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM8008HV#PBF?
LTM8008HV#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM8008HV#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 LTM8008HV#PBF?
For technical support, including LTM8008HV#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM8008HV#PBF requirements.
6.How does Aetrix verify that LTM8008HV#PBF is sourced from the original manufacturer or authorized distributors?
All LTM8008HV#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 LTM8008HV#PBF meets industry standards.
7.What is the process for return or replacement of LTM8008HV#PBF?
All LTM8008HV#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM8008HV#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 LTM8008HV#PBF part is unused and in its original packaging.
Return procedure for LTM8008HV#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTM8008HV#PBF Tags
-
1S4E_0505S1.5U
GAPTEC Electronic
-
TPS631000DRLR
Texas Instruments
-
XCL209F083DR
Torex Semiconductor Ltd
-
SC202AMLTRT
Semtech Corporation
-
NME1S0505SC
Murata Power Solutions Inc.
-
XCL101A501ER-G
Torex Semiconductor Ltd
-
RFM-0505S
Recom Power
-
TEA 1-0505E
Traco Power
-
MIC33153YHJ-TR
Microchip Technology
-
TEA 1-0505
Traco Power
-
TPSM863252RDXR
Texas Instruments
-
RFB-0505S
Recom Power
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…
