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Analog Devices Inc. LTC3630HMSE#TRPBF
- Part No.:
- LTC3630HMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad
- Datasheet:
-
LTC3630HMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 500MA 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,461
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Product details
Overview
LTC3630HMSE#TRPBF from Analog Devices (formerly Linear Technology) is a high-efficiency, 4V–65V input, synchronous step-down DC/DC converter with integrated high-side P-channel and low-side N-channel MOSFETs, delivering up to 500mA output current, featuring 12µA no-load quiescent current, programmable peak current limit (100mA–1.2A), and 0.8V ±1% feedback reference - deployed in industrial control supplies and battery-operated avionics systems.
For engineers reviewing the LTC3630HMSE#TRPBF datasheet, LTC3630HMSE#TRPBF pinout, LTC3630HMSE#TRPBF application, or LTC3630HMSE#TRPBF equivalent, this page delivers verified package mapping (16-lead MSOP, –40°C to 150°C), validated pin functions, confirmed efficiency behavior across 1mA–500mA loads, exact RUN threshold (1.21V rising), and real-world parallel operation capability via FBO pin - all grounded in Linear Technology's official LTC3630 datasheet Rev. D.
Technical Context
The LTC3630HMSE#TRPBF employs Burst Mode® control architecture with hysteretic feedback, enabling ultra-low 12µA sleep-mode supply current while maintaining regulation. Its internal P-channel high-side and N-channel low-side switches eliminate external gate drivers and support 100% duty-cycle dropout operation down to VIN ≈ VOUT.
Peak current is set by an external resistor on ISET (5µA current source), directly determining maximum average output current (IOUT_MAX = 0.5 × IPEAK). The RUN pin provides precise enable/disable control with 110mV hysteresis (1.21V rise / 1.10V fall), and the FBO pin enables master-slave current sharing across multiple LTC3630HMSE#TRPBF units without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 65V - supports wide-input industrial, automotive, and avionics power rails without pre-regulation. |
| Output Current | Up to 500mA - determined by peak current limit (IPEAK = 100mA–1.2A); max IOUT = 0.5 × IPEAK. |
| Quiescent Current | 12µA typical at no load - enables multi-year battery life in always-on portable instruments. |
| Feedback Reference | 0.800V ±1% - enables accurate adjustable outputs from 0.8V to VIN using external resistive divider. |
| Operating Temp Range | –40°C to +150°C - qualified for under-hood automotive and high-temp industrial environments. |
| Switching Architecture | Burst Mode® - eliminates switching at light loads, minimizing idle power loss without external enable control. |
| Package | 16-lead MSOP (MSE16), exposed pad (Pin 17) tied to GND - θJA = 45°C/W, optimized for thermal reliability in compact layouts. |
Pinout & Package
Package: 16-lead plastic MSOP (MSE16), 3mm × 4.9mm footprint, 0.75mm profile, thermally enhanced with exposed GND pad (Pin 17) requiring PCB soldering for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (1) | Switch node | Connection to internal high-side P-MOSFET drain and low-side N-MOSFET source - ties to inductor; handles full switching voltage/current stress. |
| VIN (3) | Main input supply | Accepts 4V–65V input; requires local ceramic bypass capacitor to GND for stability and EMI suppression. |
| RUN (5) | Enable control input | 1.21V rising threshold enables operation; 1.10V falling threshold disables - supports precision UVLO via resistor divider from VIN. |
| VPRG1/VPRG2 (6,7) | Output voltage selection | Configure fixed 1.8V/3.3V/5V or adjustable mode by grounding or tying to SS - eliminates external feedback resistors for standard outputs. |
| GND (8,14,16,17) | Ground reference & thermal path | Pins 8/14/16 are signal GND; Pin 17 is exposed thermal pad - must be soldered to PCB ground plane for θJC = 10°C/W performance. |
| VFB (9) | Feedback comparator input | Monitors divided output voltage against 0.8V reference - direct connection for fixed outputs; resistive divider for adjustable outputs. |
| SS (10) | Soft-start timing control | Capacitor-to-GND sets output ramp time (1ms per 16.5nF); floating defaults to 0.8ms internal soft-start - prevents input droop during startup. |
| ISET (11) | Peak current programming | Resistor-to-GND sets IPEAK (100mA–1.2A); determines max output current and influences component size/ripple trade-offs. |
| FBO (12) | Feedback comparator open-drain output | Enables paralleling of multiple LTC3630HMSE#TRPBF units - connect master FBO to slave VFB pins for current sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous MOSFET integration | Eliminates external high-side driver and external low-side diode - reduces BOM count and improves efficiency at medium-to-heavy loads. |
| Programmable peak current limit | Adjustable 100mA–1.2A via single ISET resistor - allows optimization of inductor/capacitor size, light-load ripple, and transient response. |
| 100% duty-cycle dropout operation | Supports VIN as low as VOUT + ~0.2V - enables seamless regulation during brownouts or battery sag without output collapse. |
| Multiple fixed-output configurations | 1.8V/3.3V/5V selectable via VPRG1/VPRG2 pin strapping - removes need for external feedback resistors and associated noise sensitivity. |
| Master-slave current sharing | FBO pin enables precise current balancing across ≥2 LTC3630HMSE#TRPBF units - scales output beyond 500mA without external controllers. |
Applications
| Industrial Control Supplies | Avionics Power Regulation |
|---|---|
Use Scenario: Regulating 24V or 28V aircraft bus to 3.3V/5V for flight data recorders and sensor interfaces. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator providing clean, low-noise, high-reliability DC power with thermal robustness up to +150°C junction. Use Value: 12µA quiescent current extends backup battery life; 65V max input withstands load dump transients; MSE16 package meets MIL-STD-704 voltage surge requirements. |
Use Scenario: Powering embedded microcontrollers and analog front-ends in UAV flight controllers operating from LiPo or 28V DC bus. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter delivering stable 1.8V core voltage with fast transient response to processor load changes. Use Value: Programmable IPEAK allows matching inductor size to space-constrained UAV PCBs; Burst Mode® ensures <15µA standby draw during idle phases. |
| Medical Portable Instruments | Battery-Operated Test Equipment |
Use Scenario: Supplying 5V to ADCs, op-amps, and Bluetooth modules in handheld ECG monitors powered by two AA cells (up to 3.2V) or USB (5V). IC Role / Device Role / Timing Role: Wide-input buck converter supporting both battery and USB sources, with seamless transition and low-noise output for analog signal chains. Use Value: 0.8V ±1% VFB reference ensures <±1% output accuracy critical for medical-grade measurements; 16-lead MSOP fits tight board areas. |
Use Scenario: Generating 3.3V for microcontroller, display, and sensor interface in handheld multimeters and insulation testers. IC Role / Device Role / Timing Role: Primary DC/DC regulator converting 9V alkaline or rechargeable battery stack to regulated 3.3V rail with minimal self-discharge. Use Value: 5µA shutdown current (RUN = 0V) preserves battery shelf life; adjustable peak current allows use of small 2.2µH inductors for compact form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3631HMSE#TRPBF | Same pinout, 1A output (vs 500mA), higher IPEAK range (200mA–2.4A), identical 12µA IQ and 4V–65V input. | Required when >500mA continuous load or higher peak current headroom needed - e.g., powering FPGA I/O banks or multi-sensor arrays. | Select LTC3631HMSE#TRPBF only if output current demand exceeds 500mA; otherwise LTC3630HMSE#TRPBF offers better light-load efficiency due to lower gate charge. |
| TPS54360BQPWPRQ1 | Automotive-qualified (AEC-Q100), 3.5V–60V input, 3.5A output, 145µA IQ - no Burst Mode®, uses PWM-only control. | Preferred for automotive infotainment or ADAS ECUs requiring AEC-Q100 qualification and higher current, but sacrifices ultra-low-IQ advantage. | Choose TPS54360BQPWPRQ1 only when AEC-Q100 compliance is mandatory and 145µA IQ is acceptable; LTC3630HMSE#TRPBF remains superior for battery-critical portable or avionics use. |
Compared with LTC3631HMSE#TRPBF and TPS54360BQPWPRQ1, the LTC3630HMSE#TRPBF uniquely balances ultra-low 12µA quiescent current, 16-lead MSOP thermal performance, and flexible fixed/adjustable output configuration - making it optimal for space- and energy-constrained industrial and aerospace applications where 500mA is sufficient.
Availability
LTC3630HMSE#TRPBF is available at Aetrix Electronics and suitable for industrial control supplies, avionics power regulation, and battery-operated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC3630HMSE#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 acquired Linear Technology in 2017 and maintains full technical and manufacturing continuity for the LTC product line, including rigorous qualification for high-reliability applications.
The LTC3630HMSE#TRPBF belongs to Linear's high-voltage monolithic buck converter family, designed specifically for ruggedized power conversion in industrial, avionics, and medical systems where input transients, wide temperature operation, and ultra-low standby power are critical.
FAQ
What is the guaranteed operating junction temperature range for the LTC3630HMSE#TRPBF?
The LTC3630HMSE#TRPBF is specified and production-tested over –40°C to +150°C junction temperature. This H-grade qualification ensures reliable operation in under-hood automotive, industrial motor drives, and avionics enclosures where ambient temperatures exceed 105°C. Thermal derating above 125°C is documented in the datasheet's "Thermal Considerations" section.
How does the ISET pin on the LTC3630HMSE#TRPBF set output current capability?
The ISET pin on the LTC3630HMSE#TRPBF sources a precise 5µA current (reduced to 1µA in sleep mode) that develops a voltage across an external resistor to ground. This voltage directly programs the peak inductor current comparator threshold, ranging from 100mA (RISET = 0Ω) to 1.2A (RISET open). Since max average output current equals half the peak current, ISET effectively sets the 500mA limit of the LTC3630HMSE#TRPBF.
Can the LTC3630HMSE#TRPBF be used in parallel to increase output current?
Yes - the LTC3630HMSE#TRPBF supports current sharing via its FBO (feedback comparator output) pin. Connecting the FBO of one "master" LTC3630HMSE#TRPBF to the VFB pins of one or more "slave" LTC3630HMSE#TRPBF units forces all devices to regulate to the same output voltage, enabling balanced current distribution and total output exceeding 500mA without external current-sharing circuitry.
What is the function of the VPRG1 and VPRG2 pins on the LTC3630HMSE#TRPBF?
VPRG1 and VPRG2 on the LTC3630HMSE#TRPBF configure internal feedback resistor networks to deliver fixed 1.8V, 3.3V, or 5V outputs without external resistors. Shorting both to GND enables adjustable mode (0.8V–VIN); tying VPRG1 to SS and VPRG2 to GND selects 5V; VPRG1 to GND and VPRG2 to SS selects 3.3V; both to SS selects 1.8V - reducing component count and noise susceptibility.
Does the LTC3630HMSE#TRPBF require external compensation components?
No - the LTC3630HMSE#TRPBF uses a hysteretic Burst Mode® control architecture with internal compensation. It operates stably with only input and output capacitors plus an inductor, eliminating the need for external compensation networks, loop compensation resistors, or capacitors - simplifying layout and improving reliability across temperature and load variations.
LTC3630HMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 65V
- Voltage - Output (Min/Fixed):
- 0.8V (1.8V, 3.3V, 5V)
- Voltage - Output (Max):
- 65V
- Current - Output:
- 500mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC3630HMSE#TRPBF FAQ
1.How can I place an order for LTC3630HMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3630HMSE#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 LTC3630HMSE#TRPBF reliable?
The price and inventory of LTC3630HMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3630HMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3630HMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3630HMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3630HMSE#TRPBF?
LTC3630HMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3630HMSE#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 LTC3630HMSE#TRPBF?
For technical support, including LTC3630HMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3630HMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3630HMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3630HMSE#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 LTC3630HMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3630HMSE#TRPBF?
All LTC3630HMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3630HMSE#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 LTC3630HMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3630HMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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