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Analog Devices Inc. LT8337JV-1#PBF
- Part No.:
- LT8337JV-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
LT8337JV-1#PBF.pdf
- Description:
- IC REG BOOST PROG 5A 16LQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LT8337JV-1#PBF from Analog Devices is a low-quiescent-current, synchronous step-up DC/DC converter with Silent Switcher architecture and external compensation capability. It integrates 28V/5A power switches, operates from 2.7V to 28V input, delivers up to 26V output, supports 300kHz–3MHz programmable switching frequency, and enables PassThru mode for VIN > VOUT battery backup systems.
For engineers reviewing the LT8337JV-1#PBF datasheet, LT8337JV-1#PBF pinout, LT8337JV-1#PBF application, or LT8337JV-1#PBF equivalent, key selection criteria include its 150°C junction-rated LQFN package, VC-pin-based loop compensation for fast transient response, ultralow EMI performance per CISPR25 Class 5, and PassThru operation enabling seamless input-to-output conduction in portable medical monitors and industrial handhelds.
Technical Context
The LT8337JV-1#PBF implements fixed-frequency current-mode control with slope compensation and an integrated error amplifier whose output (VC pin) drives external RC compensation networks. Its Silent Switcher architecture uses dual, symmetric VOUT/GND capacitor paths to cancel magnetic fields and suppress radiated EMI.
PassThru mode activates when VIN exceeds VOUT by >0 V (rising) or >−0.6 V (falling), forcing 100% duty cycle on the synchronous MOSFET while disabling the top switch-enabling direct conduction without regulation loss. Spread spectrum frequency modulation (SSFM) reduces peak EMI emissions by ±0.45% of fSW over a ±20% range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 28V - supports single-cell Li-ion through 24V industrial rails without pre-regulation. |
| Output Voltage Range | Up to 26V - programmable via FB resistor divider; enables 12V/15V/19V system rails from low-voltage batteries. |
| Switching Frequency | 300kHz to 3MHz - set by RT resistor; higher frequencies allow smaller inductors (e.g., 2.2µH at 2MHz). |
| Quiescent Current (Burst) | 23µA typical - enables multi-year battery life in always-on IoT sensors with light-load operation. |
| PassThru Threshold | VIN − VOUT ≥ 0V (rising) - eliminates regulation overhead during battery switchover in backup power systems. |
| EMI Performance | CISPR25 Class 5 compliant - meets automotive EMC requirements without added shielding or ferrites. |
| Junction Temperature | −40°C to +150°C - qualified for under-hood and industrial edge computing environments. |
Pinout & Package
LT8337JV-1#PBF is housed in a thermally enhanced 16-lead (3mm × 3mm) LQFN package with exposed thermal pad (Pin 17 = GND). The package supports θJCbottom = 8.2°C/W for efficient PCB heat extraction in high-power-density designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SYNC/MODE (1) | Mode selection & sync input | Selects Burst, Pulse-Skipping, SSFM, or external clock sync; ignored during PassThru or startup. |
| RT (2) | Frequency programming | Resistor to GND sets fSW from 300kHz–3MHz; open-circuit not allowed. |
| GND (3,5,8,17) | Power & signal ground | Exposed pad (17) must be soldered to PCB ground plane for thermal and EMI performance. |
| FB (4) | Feedback voltage input | Senses output via resistor divider; regulates VOUT to 1.000V (J-grade) reference. |
| VOUT (6,7) | Output power terminals | Each connects to dedicated 1µF ceramic capacitor for Silent Switcher EMI cancellation. |
| SW (9,10,11) | Switch node outputs | Internal bottom/top MOSFET drains; tied together externally to inductor and BST capacitor. |
| BST (12) | Bootstrap supply | 0.1µF capacitor between BST and SW powers top gate driver; critical for 28V operation. |
| VIN (13) | Main input supply | Accepts 2.7V–28V; powers internal LDO (INTVCC) and high-side driver circuitry. |
| EN/UVLO (14) | Enable & undervoltage lockout | Shuts down IC below 0.94V; 90mV hysteresis prevents chatter near threshold. |
| INTVCC (15) | Internal 3.5V regulator bypass | Requires ≥1µF ceramic cap to ground; supplies gate drivers and bias circuits. |
| VC (16) | Error amp output & compensation | Connects to external RC network for loop stability tuning; enables fast load transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher Architecture | Dual symmetric VOUT/GND capacitor paths reduce radiated EMI by >30dB vs conventional boost converters. |
| External Compensation (VC Pin) | Enables custom loop bandwidth and phase margin tuning for dynamic loads like motor drivers or RF transceivers. |
| PassThru Mode | 100% duty cycle operation eliminates switching losses when VIN ≥ VOUT, extending battery runtime in portable equipment. |
| Ultralow Quiescent Current | 23µA in Burst Mode ensures <1µA system standby draw in battery-powered IoT nodes. |
| Spread Spectrum Modulation | ±0.45% fSW dithering spreads EMI energy across spectrum, easing compliance with strict automotive EMC limits. |
Applications
| Portable Medical Monitors | Industrial Handheld Scanners |
|---|---|
Use Scenario: Battery-powered ECG monitor operating from single 3.7V Li-ion cell requiring stable 12V rail for analog front-end and display backlight. IC Role / Device Role / Timing Role: Synchronous boost converter providing regulated 12V output with PassThru fallback when battery voltage drops near 12V. Use Value: 23µA Burst Mode IQ extends battery life to >72 hours; Silent Switcher ensures clean analog measurements without EMI-induced noise. | Use Scenario: Rugged barcode scanner powered by 2S Li-ion (7.4V nominal) needing 15V for laser diode driver and 5V for logic via secondary LDO. IC Role / Device Role / Timing Role: Primary step-up regulator delivering 15V at up to 1.2A with SSFM-enabled CISPR25 Class 5 compliance. Use Value: 150°C-rated package survives hot industrial environments; external VC compensation maintains regulation during rapid laser pulsing. |
| Automotive Telematics Units | Smart Building Sensors |
Use Scenario: Cellular-connected telematics control unit (TCU) drawing bursty 500mA loads from 12V vehicle bus with cold-crank immunity down to 4.5V. IC Role / Device Role / Timing Role: Input-rail booster maintaining 12V system rail during cranking dips, using PassThru to sustain output when input falls below 12V. Use Value: 2.7V minimum VIN allows operation during deep cranking events; 3MHz max fSW enables compact 1.5µH inductor footprint. | Use Scenario: Wireless occupancy sensor node powered by coin cell (3V) requiring 3.3V MCU rail and 5V radio interface, operating for 10+ years on single battery. IC Role / Device Role / Timing Role: Ultra-low-IQ boost converter supplying regulated 3.3V/5V with programmable soft-start to prevent brownout during wake-up. Use Value: 23µA Burst Mode IQ minimizes average current draw; 16-lead LQFN fits tight 12mm² PCB area constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8337JV#PBF | Lacks VC pin; includes PG flag instead; same 150°C rating and package. | Requires internal compensation; unsuitable where fast transient response is critical. | Choose LT8337JV#PBF if power-good monitoring is needed and loop tuning is unnecessary. |
| TPS61088RHLR | 20V max output, 12A switch, no PassThru, no SSFM, 40V max VIN, QFN-20 package. | Higher current but lower voltage range; lacks EMI-optimized architecture and battery switchover capability. | Choose TPS61088RHLR for high-current 5V/12V rails where EMI is less constrained and PassThru is not required. |
Compared with LT8337JV#PBF, the LT8337JV-1#PBF trades power-good signaling for external loop control-critical for servo-driven loads-while both share identical thermal rating and Silent Switcher EMI suppression. Against TPS61088RHLR, LT8337JV-1#PBF offers superior EMI performance, PassThru functionality, and lower quiescent current at the cost of reduced peak current capability.
Availability
LT8337JV-1#PBF is available at Aetrix Electronics and suitable for portable medical monitors, industrial handheld scanners, automotive telematics units, and smart building sensors requiring stable component supply across extended temperature ranges and stringent EMI environments.
Supply support for LT8337JV-1#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 industrial, automotive, communications, and healthcare markets.
The LT8337/LT8337-1 product line delivers high-efficiency, low-EMI synchronous boost conversion for battery-critical and noise-sensitive applications, emphasizing thermal robustness and design flexibility through external compensation and PassThru operation.
FAQ
What is the maximum output voltage supported by the LT8337JV-1#PBF?
The LT8337JV-1#PBF supports output voltages up to 26V, set by the feedback resistor divider network connected to the FB pin. Its internal 1.000V (J-grade) reference and ±0.012V regulation accuracy ensure stable output across temperature and load. This makes LT8337JV-1#PBF suitable for generating 12V, 15V, or 19V rails from low-voltage batteries without external post-regulation.
How does PassThru mode operate in the LT8337JV-1#PBF?
PassThru mode activates in the LT8337JV-1#PBF when VIN rises above VOUT by ≥0V (rising threshold), causing the synchronous MOSFET to remain continuously on while the top switch stays off-effectively shorting VIN to VOUT through the inductor and low-RDS(on) FET. This eliminates switching losses and improves efficiency during battery switchover or input-voltage-fall conditions, and is fully automatic without external control signals.
What is the purpose of the VC pin on the LT8337JV-1#PBF?
The VC pin on the LT8337JV-1#PBF is the error amplifier output and compensation node, allowing designers to connect external RC networks for precise loop bandwidth and phase margin tuning. Unlike the LT8337JV#PBF, which uses internal compensation, the VC pin enables optimized transient response for dynamic loads such as motor drivers or pulsed RF amplifiers-making LT8337JV-1#PBF ideal for demanding real-time applications.
What thermal rating does the LT8337JV-1#PBF support, and how is it implemented?
The LT8337JV-1#PBF is rated for operation from −40°C to +150°C junction temperature, verified per Analog Devices' characterization and statistical process controls. This J-grade rating is enabled by its 3mm × 3mm LQFN package with exposed thermal pad (Pin 17), which achieves θJCbottom = 8.2°C/W when soldered to a solid PCB ground plane-ensuring reliable operation in under-hood automotive or high-ambient industrial environments.
Does the LT8337JV-1#PBF support spread spectrum frequency modulation (SSFM), and how is it configured?
Yes, the LT8337JV-1#PBF supports SSFM to reduce peak EMI emissions. It is enabled by connecting the SYNC/MODE pin to INTVCC (via direct tie or resistor), which activates ±0.45% frequency dithering over a ±20% range around the programmed fSW. SSFM operates only in Pulse-Skipping or Burst modes-not during PassThru-and is confirmed in the device's electrical characteristics table and typical performance curves.
LT8337JV-1#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Silent Switcher®1
- Package/Case:
- 16-TFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 26V
- Current - Output:
- 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)
LT8337JV-1#PBF FAQ
1.How can I place an order for LT8337JV-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8337JV-1#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 LT8337JV-1#PBF reliable?
The price and inventory of LT8337JV-1#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8337JV-1#PBF is usually 5 days.
3.What payment methods are accepted for LT8337JV-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8337JV-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8337JV-1#PBF?
LT8337JV-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8337JV-1#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 LT8337JV-1#PBF?
For technical support, including LT8337JV-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8337JV-1#PBF requirements.
6.How does Aetrix verify that LT8337JV-1#PBF is sourced from the original manufacturer or authorized distributors?
All LT8337JV-1#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 LT8337JV-1#PBF meets industry standards.
7.What is the process for return or replacement of LT8337JV-1#PBF?
All LT8337JV-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8337JV-1#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 LT8337JV-1#PBF part is unused and in its original packaging.
Return procedure for LT8337JV-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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