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Analog Devices Inc. LT8362HDD#PBF
- Part No.:
- LT8362HDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LT8362HDD#PBF.pdf
- Description:
- IC REG BOOST SEPIC 2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:147
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Product details
Overview
LT8362HDD#PBF from Analog Devices is a 60V, 2A current-mode DC/DC converter IC supporting boost, SEPIC, and inverting topologies with single-feedback-pin configuration. It operates from 2.8V to 60V input, delivers ultralow 9µA quiescent current in Burst Mode, maintains <15mV output ripple, and features programmable 300kHz–2MHz switching frequency - used in automotive infotainment power rails requiring high-voltage step-up with low standby consumption.
For engineers reviewing the LT8362HDD#PBF datasheet, LT8362HDD#PBF pinout, LT8362HDD#PBF application, or LT8362HDD#PBF equivalent, key selection considerations include its –40°C to 150°C junction temperature rating, thermally enhanced 10-lead 3mm × 3mm DFN package, BIAS pin for efficiency optimization, SYNC/MODE pin for EMI-reducing spread-spectrum modulation, and dual FBX regulation thresholds (1.60V for positive outputs, –0.80V for negative outputs).
Technical Context
The LT8362HDD#PBF implements fixed-frequency current-mode control with external RT-resistor-programmable oscillator (300kHz–2MHz), integrated 60V/2A power switch, and dual-path error amplifier architecture enabling topology-agnostic feedback via a single FBX pin. Its Burst Mode operation achieves 9µA IQ while maintaining tight output regulation through controlled pulse-bursting and sleep-cycle management.
It supports five SYNC/MODE pin configurations: Burst Mode (<0.14V), external clock synchronization, pulse-skipping (floating), and two Spread Spectrum Frequency Modulation (SSFM) variants - all selectable without external logic. The BIAS pin supplies INTVCC when 4.4V ≤ BIAS ≤ VIN, reducing VIN current draw and improving full-load efficiency by up to 3% in SEPIC configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 60V - supports direct battery-to-48V rail conversion in 12V/24V/48V automotive systems without pre-regulation. |
| Switch Rating | 60V, 2A - enables 48V boost output at ≥700mA from 24V input (per typical application), with 165mΩ RDS(ON). |
| Quiescent Current | 9µA in Burst Mode - sustains >90% efficiency at 100µA load, critical for always-on vehicle telematics modules. |
| FBX Regulation | 1.60V (positive VOUT) or –0.80V (negative VOUT) - single-pin topology selection eliminates need for mode-setting resistors or jumpers. |
| Switching Frequency | 300kHz to 2MHz (RT-programmable) - allows EMI-sensitive designs to shift above AM band or align with system clocks. |
| Junction Temperature | –40°C to 150°C - H-grade qualification meets AEC-Q100 Grade 1 requirements for under-hood automotive power stages. |
| Package | 10-lead 3mm × 3mm DFN with exposed thermal pad - θJA = 43°C/W enables 2.5W dissipation at 50°C ambient without heatsink. |
Pinout & Package
LT8362HDD#PBF uses a thermally enhanced 10-lead 3mm × 3mm plastic DFN package with exposed PGND/GND pad (Pin 11) that must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SW | Power switch drain | Connects to inductor/diode node; 60V/2A rated; minimize trace area to reduce EMI radiation. |
| 2: SYNC/MODE | Multi-function control input | Selects Burst Mode, pulse-skip, SSFM, or external sync; threshold voltages defined per datasheet Table (Note 5). |
| 3: SS | Soft-start timing node | 2µA constant-current charge; capacitor value sets inrush current ramp rate during startup. |
| 4: RT | Oscillator frequency programming | Resistor to GND sets fSW from 300kHz–2MHz; RT = 51.2/fOSC – 5.6 (kΩ, fOSC in MHz). |
| 5: FBX | Topology-agnostic feedback | Regulates to 1.60V (boost/SEPIC) or –0.80V (inverting); determines output voltage via resistor divider. |
| 6: EN/UVLO | Enable and undervoltage lockout | 1.6V turn-off / 1.68V turn-on threshold with 80mV hysteresis; supports programmable input UVLO using resistor divider. |
| 7: VIN | Main input supply | 2.8V–60V tolerant; requires local 10µF ceramic bypass near pin; powers INTVCC if BIAS not used. |
| 8: INTVCC | Internal 3.2V LDO output | Must be bypassed with 1µF ceramic to GND; no external loading permitted; rising threshold = 2.65V. |
| 9: BIAS | Secondary INTVCC supply | Accepts 4.4V–40V input; reduces VIN current draw when 4.4V ≤ BIAS ≤ VIN - improves efficiency in SEPIC/VOUT-biased configs. |
| 10: VC | Error amplifier output | Connects to external compensation network (R-C across VC–GND); sets loop bandwidth and stability. |
| 11: PGND/GND | Power and signal ground | Exposed thermal pad; must be soldered to solid copper ground plane for thermal relief and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Single FBX topology selection | Eliminates external mode-select circuitry: 1.60V reference for positive outputs, –0.80V for negative outputs - same pin, no rework needed. |
| Burst Mode with 9µA IQ | Maintains regulation at microamp loads while holding output ripple below 15mV - extends battery life in always-on automotive sensors. |
| Spread Spectrum Frequency Modulation | ±20% frequency dithering at fOSC/256 rate reduces peak EMI by >10dB without altering layout or filtering components. |
| BIAS pin for efficiency gain | Redirects INTVCC current from VIN to auxiliary supply (e.g., VOUT in SEPIC), cutting VIN current by ~1.2mA at full load - measurable efficiency uplift. |
| AEC-Q100 Grade 1 qualified | Validated for –40°C to +150°C operation with HTOL, TC, and ESD testing - suitable for engine control, ADAS camera power, and infotainment head units. |
Applications
| Automotive Infotainment Power | Industrial Sensor Transmitter |
|---|---|
|
Use Scenario: Generating stable 48V bias for LCD backlight drivers in vehicle head units powered from 12V battery with cold-crank tolerance. IC Role / Device Role / Timing Role: Primary DC/DC controller implementing boost topology with programmable soft-start and UVLO hysteresis to survive 4.5V cranking dips. Use Value: 9µA Burst Mode IQ prevents battery drain during vehicle sleep; 150°C-rated H-grade ensures reliability near heat-generating SoCs. |
Use Scenario: Providing isolated –15V rail for analog front-end op-amps in 4–20mA loop-powered industrial transmitters. IC Role / Device Role / Timing Role: Inverting converter with single FBX pin regulating to –0.80V reference; compact DFN fits space-constrained field device PCBs. Use Value: Eliminates need for separate inverting IC or transformer; BIAS pin allows VOUT to power INTVCC, simplifying bill-of-materials. |
| Medical Portable Imaging | Telecom Remote Radio Unit |
|
Use Scenario: Stepping up 3.7V Li-ion battery to 24V for CCD sensor bias in handheld ultrasound probes. IC Role / Device Role / Timing Role: High-efficiency boost converter with programmable 2MHz switching to shrink magnetics and avoid audible noise. Use Value: 2A switch handles pulsed 500mA loads; SSFM reduces conducted EMI into sensitive RF receive paths during imaging bursts. |
Use Scenario: Generating 28V intermediate bus from –48V telecom supply for GaN PA bias in outdoor small cells. IC Role / Device Role / Timing Role: SEPIC converter accepting wide-input range (28V–72V) with BIAS pin fed from VOUT to maximize efficiency. Use Value: Single-chip solution replaces discrete buck-boost + LDO; 150°C rating supports sealed outdoor enclosures without forced air. |
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; no integrated switch; requires external MOSFETs; 4V–36V input; supports 4-switch topology only. | Used where bidirectional power flow or higher efficiency >95% at >2A is required; lacks Burst Mode IQ <10µA. | Select LTC3789EMSE#PBF when designing for >3A continuous output or when synchronous rectification is mandatory for thermal constraints. |
| LT8330EDD#PBF | 60V, 1.2A monolithic boost/SEPIC/inverting converter; same FBX architecture; 12µA Burst Mode IQ; 3mm × 3mm DFN; –40°C to 125°C. | Lower current capability limits use to ≤300mA 48V outputs; identical pinout but reduced switch rating and temperature grade. | Choose LT8330EDD#PBF for cost-sensitive, lower-power automotive body electronics where 150°C operation is unnecessary. |
Compared with LTC3789EMSE#PBF and LT8330EDD#PBF, the LT8362HDD#PBF uniquely combines 2A integrated switching, 150°C operation, and sub-10µA Burst Mode IQ in a 10-lead DFN - making it optimal for space- and thermal-constrained automotive and industrial boost/SEPIC designs requiring robustness across extreme temperatures.
Availability
LT8362HDD#PBF is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial sensor transmitters, medical portable imaging systems, and telecom remote radio units requiring stable component supply with extended temperature support.
Supply support for LT8362HDD#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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision, power, and connectivity applications.
The LT8362 product line delivers monolithic DC/DC converters optimized for wide-input automotive, industrial, and medical power systems - designed to simplify high-voltage, high-efficiency power conversion with minimal external components and robust thermal performance.
FAQ
What is the maximum operating junction temperature of the LT8362HDD#PBF?
The LT8362HDD#PBF is rated for a maximum junction temperature of 150°C and is qualified to AEC-Q100 Grade 1 standards. This specification is confirmed in the Order Information table and Absolute Maximum Ratings section of the official Analog Devices datasheet Rev. B. The H-grade designation explicitly denotes the –40°C to 150°C operating range, distinguishing it from E- and I-grade variants. Thermal design must ensure the exposed pad (Pin 11) is soldered to a sufficient copper area to maintain this rating under full load.
Does the LT8362HDD#PBF support both positive and negative output voltages?
Yes, the LT8362HDD#PBF supports both positive and negative output voltages using a single FBX pin. When configured for positive outputs (boost or SEPIC), the internal reference is 1.60V; for negative outputs (inverting topology), it is –0.80V. This dual-threshold architecture is implemented in the error amplifier block (A1/A2) and is documented in the Block Diagram and OPERATION section of the datasheet. No external mode-selection components are required.
How is the switching frequency programmed on the LT8362HDD#PBF?
The switching frequency of the LT8362HDD#PBF is programmed using an external resistor (RT) connected between the RT pin and GND. The relationship is given by RT = 51.2/fOSC – 5.6 (kΩ, with fOSC in MHz). Valid range is 300kHz to 2MHz, corresponding to RT values from 165kΩ down to 20kΩ. This is specified in Table 1 and the Applications Information section of the datasheet Rev. B.
What is the purpose of the BIAS pin on the LT8362HDD#PBF?
The BIAS pin on the LT8362HDD#PBF supplies the INTVCC regulator when 4.4V ≤ BIAS ≤ VIN, thereby reducing current drawn from the main VIN supply and improving overall efficiency - especially in SEPIC configurations where VOUT can exceed VIN. This behavior is detailed in the PIN FUNCTIONS and APPLICATIONS INFORMATION sections, including the condition that BIAS must be ≥4.4V to enable sourcing and ≤VIN to prevent backfeed.
Can the LT8362HDD#PBF be synchronized to an external clock?
Yes, the LT8362HDD#PBF can be synchronized to an external clock via the SYNC/MODE pin. When driven with a square wave (20%–80% duty cycle, valleys <0.4V, peaks >1.7V), the internal oscillator locks to the external frequency within the 300kHz–2MHz range. This feature is explicitly described in the Synchronization and Mode Selection subsection of the Applications Information section, and disables Burst Mode in favor of pulse-skipping for regulation.
LT8362HDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- 60V (Switch)
- Current - Output:
- 2A (Switch)
- Frequency - Switching:
- 300kHz ~ 2MHz
- Synchronous Rectifier:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LT8362HDD#PBF FAQ
1.How can I place an order for LT8362HDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8362HDD#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 LT8362HDD#PBF reliable?
The price and inventory of LT8362HDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8362HDD#PBF is usually 5 days.
3.What payment methods are accepted for LT8362HDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8362HDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8362HDD#PBF?
LT8362HDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8362HDD#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 LT8362HDD#PBF?
For technical support, including LT8362HDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8362HDD#PBF requirements.
6.How does Aetrix verify that LT8362HDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT8362HDD#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 LT8362HDD#PBF meets industry standards.
7.What is the process for return or replacement of LT8362HDD#PBF?
All LT8362HDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8362HDD#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 LT8362HDD#PBF part is unused and in its original packaging.
Return procedure for LT8362HDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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