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Analog Devices Inc. LT8336JV#PBF
- Part No.:
- LT8336JV#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
LT8336JV#PBF.pdf
- Description:
- IC REG BOOST ADJ 2.5A 16LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:521
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Product details
Overview
LT8336JV#PBF from Analog Devices is a 40V, 2.5A synchronous step-up DC/DC converter with Silent Switcher architecture, 300kHz–3MHz programmable switching frequency, 0.3µA shutdown IQ, and PassThru™ mode for VIN ≥ VOUT operation. It integrates dual 40V MOSFETs and supports automotive preboost and industrial general-purpose boost applications requiring low EMI and high efficiency across 2.7V–40V input.
For engineers reviewing the LT8336JV#PBF datasheet, LT8336JV#PBF pinout, LT8336JV#PBF application, or LT8336JV#PBF equivalent, key selection criteria include its AEC-Q100 qualified –40°C to 150°C junction temperature rating, spread-spectrum EMI reduction, 100% duty cycle capability in PassThru mode, and dual-VOUT-pin Silent Switcher layout configuration for CISPR 25 Class 5 compliance.
Technical Context
The LT8336JV#PBF employs fixed-frequency current-mode control with internal slope compensation and dual 40V/2.5A synchronous power switches. Its PassThru™ mode activates when VIN ≥ VOUT (threshold ±0.6V), disabling the top switch and holding the bottom switch fully on to minimize conduction loss.
EMI suppression combines Silent Switcher topology-requiring two matched 1µF capacitors between VOUT pins (6,7) and adjacent GND pins (5,8)-with optional spread-spectrum modulation (±0.45% center frequency deviation, ±20% range) and selectable Burst Mode® (4µA light-load IQ) or pulse-skipping operation via SYNC/MODE pin configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 40V - supports wide-range battery and automotive supply inputs including cold-crank scenarios. |
| Output Current | 2.5A continuous - enables high-power boost conversion without external MOSFETs. |
| Switching Frequency | 300kHz to 3MHz programmable - balances inductor size vs. efficiency; 2MHz typical for AM-band avoidance. |
| Quiescent Current | 4µA in Burst Mode - sustains >10-year battery life in always-on sensor nodes. |
| PassThru Threshold | VIN – VOUT ≤ 0V (rising), ≤ –0.6V (falling) - ensures seamless transition into low-loss direct conduction mode. |
| FB Regulation Voltage | 0.985V (J-grade, –40°C to 150°C) - sets output voltage accuracy for stable 1% regulation over full temp range. |
| Thermal Rating | Junction temp –40°C to 150°C - AEC-Q100 qualified for under-hood automotive use. |
Pinout & Package
LT8336JV#PBF uses a 16-lead 3mm × 3mm LQFN package with exposed thermal pad (Pin 17 = GND). The package matches standard QFN footprints and requires soldering the exposed pad to PCB ground for θJCbottom = 8.2°C/W thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SYNC/MODE (1) | Mode selection & sync input | Configures Burst/Pulse-Skipping/SSFM/Sync modes; ignored during PassThru or startup. |
| RT (2) | Frequency programming | Resistor-to-GND sets fSW from 300kHz–3MHz; open circuit prohibited. |
| GND (3,5,8,17) | Power & signal ground | Multiple GND pins + exposed pad ensure low-impedance return path for SW and VOUT loops. |
| FB (4) | Feedback input | Monitors resistive divider output; 0.985V reference enables precise VOUT regulation. |
| VOUT (6,7) | Boost output terminals | Dual pins enable Silent Switcher capacitor placement: one 1µF cap per pin to adjacent GND for EMI cancellation. |
| SW (9,10,11) | Switch node | Three paralleled pins reduce parasitic inductance for high di/dt switching and EMI control. |
| BST (12) | Bootstrap supply | 0.1µF BST capacitor enables top MOSFET gate drive above VOUT. |
| VIN (13) | Main input supply | Accepts 2.7V–40V; powers INTVCC LDO and internal logic. |
| EN/UVLO (14) | Enable & undervoltage lockout | 1.0V threshold with 100mV hysteresis; draws only 0.3µA in shutdown. |
| INTVCC (15) | Internal 3.5V regulator bypass | Requires ≥1µF ceramic cap; supplies gate drivers and control circuits. |
| PG (16) | Power good flag | Open-drain output pulled low if VOUT deviates >±8%, EN/UVLO <1V, or thermal shutdown occurs. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher® Architecture | Dual-VOUT-pin layout with matched 1µF caps enables CISPR 25 Class 5 peak/average EMI compliance without shielding. |
| PassThru™ Mode | 100% bottom-switch duty cycle eliminates switching loss when VIN ≥ VOUT, reducing heat and improving efficiency at high input voltages. |
| Low-IQ Burst Mode® | 4µA VIN quiescent current at light load extends battery life while maintaining low output ripple via controlled pulse delivery. |
| Spread Spectrum Modulation | ±0.45% center frequency deviation over ±20% range reduces EMI peak amplitudes by spreading energy across spectrum. |
| AEC-Q100 Grade J | Qualified for automotive applications with guaranteed operation from –40°C to 150°C junction temperature. |
Applications
| Automotive Preboost Converter | Industrial 24V Rail Generator |
|---|---|
Use Scenario: Boosting 9V–16V automotive battery to stable 24V for ADAS cameras and radar modules during cold-crank transients. IC Role / Device Role / Timing Role: Primary step-up regulator with PassThru mode enabling seamless 16V→24V transition and Burst Mode for low-power parking-mode operation. Use Value: Maintains 24V output with <±1% regulation across –40°C to 150°C, meeting AEC-Q100 requirements while reducing EMI below CISPR 25 Class 5 limits. |
Use Scenario: Generating isolated 24V from 12V factory floor power for PLC I/O modules and fieldbus interfaces. IC Role / Device Role / Timing Role: High-efficiency boost controller delivering 2.5A continuous output with programmable 2MHz switching to minimize inductor size. Use Value: Achieves >92% efficiency at 1A load with Silent Switcher layout, eliminating need for EMI filters and reducing BOM cost by 15% versus discrete solutions. |
| Always-On Sensor Node Power | Portable Medical Device Boost |
Use Scenario: Powering ultra-low-power gas sensors and wireless transceivers from coin-cell batteries with multi-year runtime. IC Role / Device Role / Timing Role: Low-IQ boost converter operating in Burst Mode with 4µA quiescent current and soft-start to prevent brownout during wake-up. Use Value: Enables >10-year battery life at 10µA average load while maintaining regulated 3.3V output via accurate 0.985V FB reference. |
Use Scenario: Stepping up single-cell Li-ion (3.0V–4.2V) to 5V for USB-powered diagnostic peripherals in handheld medical tools. IC Role / Device Role / Timing Role: Synchronous boost IC with integrated 40V switches and 100% PassThru capability for direct battery-to-load conduction above 4.2V. Use Value: Eliminates external pass FET and reduces solution footprint by 30% while supporting 2.5A peak loads during ECG acquisition bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8337JV#PBF | Higher 5A output current, same 40V rating and Silent Switcher architecture; wider 200kHz–4MHz fSW range. | Required for >2.5A loads; larger inductor and PCB area needed; identical thermal and EMI performance envelope. | Select LT8337JV#PBF when output current exceeds 2.5A but same automotive qualification and low-EMI requirements apply. |
| TPS61088RHLR | 2.5A, 22V max input, no PassThru mode, no spread spectrum, non-AEC-Q100, 16-pin WQFN (same 3×3mm footprint). | Limited to 22V input; unsuitable for 24V+ automotive systems; higher EMI without Silent Switcher; lower thermal rating (–40°C to 125°C). | Choose TPS61088RHLR only for cost-sensitive industrial applications below 22V input where AEC-Q100 and CISPR 25 compliance are not required. |
Compared with LT8337JV#PBF and TPS61088RHLR, the LT8336JV#PBF uniquely delivers AEC-Q100 qualification, PassThru mode for high-input-voltage efficiency, and certified CISPR 25 Class 5 EMI performance in a compact 3mm × 3mm package-making it optimal for space-constrained automotive and industrial boost designs demanding reliability and regulatory compliance.
Availability
LT8336JV#PBF is available at Aetrix Electronics and suitable for automotive preboost, industrial 24V rail generation, and always-on sensor node power applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LT8336JV#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 digital signal processing semiconductors, serving precision instrumentation, industrial automation, and automotive markets since 1965.
The LT8336 product line delivers high-efficiency, low-EMI synchronous boost converters optimized for automotive and industrial applications where input voltage ranges exceed output requirements and regulatory EMI compliance is mandatory.
FAQ
What is the maximum junction temperature rating for LT8336JV#PBF?
The LT8336JV#PBF is rated for operation from –40°C to 150°C junction temperature and is AEC-Q100 qualified for automotive use. This J-grade specification guarantees performance across the full range, unlike the E-grade (–40°C to 125°C) or H-grade variants. Thermal derating applies above 125°C to maintain reliability, and the exposed pad must be soldered to PCB ground for effective heat dissipation via θJCbottom = 8.2°C/W.
How does PassThru™ mode function in LT8336JV#PBF?
PassThru™ mode in LT8336JV#PBF activates when VIN rises to within 0V (rising threshold) or –0.6V (falling threshold) of VOUT, causing the top MOSFET to turn off and the bottom MOSFET to remain fully on. This creates a low-loss conduction path from VIN to VOUT through the inductor and bottom switch, eliminating switching losses and improving efficiency at high input voltages. The LT8336JV#PBF automatically enters this mode without external control.
What capacitor configuration is required for Silent Switcher operation in LT8336JV#PBF?
LT8336JV#PBF requires two 1µF ceramic capacitors placed as close as possible to the IC: one between VOUT (Pin 6) and GND (Pin 5), and another between VOUT (Pin 7) and GND (Pin 8). These form the differential EMI cancellation loop essential for CISPR 25 Class 5 compliance. Additional bulk capacitance (≥2.2µF) must connect directly from VOUT pins to the ground plane, and the BST capacitor (0.1µF) must be placed between BST (Pin 12) and SW (Pins 9–11).
Can LT8336JV#PBF synchronize to an external clock, and what are the requirements?
Yes, LT8336JV#PBF supports external clock synchronization via the SYNC/MODE pin (Pin 1). A digital clock signal with minimum 100ns pulse width and amplitude compatible with TTL/CMOS logic levels (0.4V low, 1.7V high) can be applied. When synchronized, the device operates in pulse-skipping mode at the external frequency, which must fall within the 300kHz–3MHz range. An RT resistor should be selected to match the target sync frequency as closely as possible for stable operation.
What is the quiescent current of LT8336JV#PBF in different operating modes?
The LT8336JV#PBF achieves industry-leading low IQ: 0.3µA in shutdown (EN/UVLO < 0.15V), 4µA in Burst Mode® operation at light load, 15µA in PassThru™ mode, and 0.9–1.5mA in pulse-skipping mode with SYNC/MODE open. These values are specified over the full –40°C to 150°C junction temperature range for the J-grade variant, enabling multi-year battery life in always-on applications while maintaining fast wake-up response.
LT8336JV#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- 40V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 300kHz ~ 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LQFN (3x3)
LT8336JV#PBF FAQ
1.How can I place an order for LT8336JV#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8336JV#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 LT8336JV#PBF reliable?
The price and inventory of LT8336JV#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8336JV#PBF is usually 5 days.
3.What payment methods are accepted for LT8336JV#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8336JV#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8336JV#PBF?
LT8336JV#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8336JV#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 LT8336JV#PBF?
For technical support, including LT8336JV#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8336JV#PBF requirements.
6.How does Aetrix verify that LT8336JV#PBF is sourced from the original manufacturer or authorized distributors?
All LT8336JV#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 LT8336JV#PBF meets industry standards.
7.What is the process for return or replacement of LT8336JV#PBF?
All LT8336JV#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8336JV#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 LT8336JV#PBF part is unused and in its original packaging.
Return procedure for LT8336JV#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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