My Inquiry
My Account
Analog Devices Inc. LTC3630AEMSE#TRPBF
- Part No.:
- LTC3630AEMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad
- Datasheet:
-
LTC3630AEMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 500MA 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:17,217
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3630AEMSE#TRPBF from Analog Devices (formerly Linear Technology) is a high-efficiency, 4V–76V input, 500mA synchronous step-down DC/DC converter with integrated high-side P-channel and low-side N-channel MOSFETs, 12µA no-load quiescent current, and programmable peak current limit (100mA–1.2A). It delivers regulated output from 0.8V to VIN in adjustable or fixed 1.8V/3.3V/5V configurations and supports parallel operation via FBO pin for higher-current industrial power rails.
For engineers reviewing the LTC3630AEMSE#TRPBF datasheet, LTC3630AEMSE#TRPBF pinout, LTC3630AEMSE#TRPBF application, or LTC3630AEMSE#TRPBF equivalent, this page provides verified technical context, validated pin functions, confirmed thermal package data (MSE16, exposed pad GND), real-world efficiency vs. load curves, and two rigorously cross-checked alternative parts for 4–76V industrial buck conversion.
Technical Context
The LTC3630AEMSE#TRPBF employs Burst Mode® control with hysteretic feedback to achieve ultra-low 12µA quiescent current at no load while maintaining regulation. Its internal P-channel high-side and N-channel low-side MOSFETs eliminate external gate drivers and enable 100% duty-cycle dropout operation down to VIN – 65V (with ≥5mA load).
Peak inductor current is set by a resistor from ISET to GND (100kΩ → 0.6A typical), directly determining maximum average output current (50% of peak), component sizing, and light-load ripple trade-offs. The FBO pin provides open-drain feedback comparator output enabling master-slave paralleling without external current-sharing circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 76V - supports wide-input industrial, automotive, and avionics supplies without pre-regulation |
| Max Output Current | 500mA - determined as half the programmable peak current (max 1.2A), enabling compact inductor selection |
| Quiescent Current | 12µA typical in Burst Mode - enables >1-year battery life in always-on remote sensors |
| Feedback Reference | 0.800V ±1% - sets precise output voltage with external divider or enables fixed 1.8V/3.3V/5V via VPRG pins |
| Package | MSE16 (16-lead MSOP, 3mm × 5mm, 0.75mm height) with exposed thermal pad - θJA = 45°C/W, requires PCB GND soldering |
| Operating Temp | –40°C to 125°C - qualified for industrial control and medical equipment ambient environments |
| Protection Features | UVLO (3.5V typ), overtemperature shutdown (~180°C), reverse-current blocking, and short-circuit limiting via hysteretic control |
Pinout & Package
MSE16 package: 16-lead plastic MSOP with exposed thermal pad (Pin 17) tied to GND. Requires soldering exposed pad to PCB ground plane for thermal performance (θJC = 10°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (1) | Switch node | Connects to inductor; drains of internal high-side P-MOSFET and low-side N-MOSFET |
| VIN (3) | Main input supply | Accepts 4V–76V; requires local ceramic bypass capacitor to GND |
| RUN (5) | Enable/control input | 1.21V threshold enables operation; <0.7V forces 5µA shutdown; supports UVLO via resistor divider |
| VPRG1/VPRG2 (6,7) | Output voltage select | Ground both → adjustable; tie VPRG1 to SS & VPRG2 to GND → 5V; other combos → 3.3V or 1.8V |
| GND (8,14,16,17) | Ground reference | Pins 8/14/16 are signal GND; Pin 17 is exposed thermal pad - must be soldered to PCB GND |
| VFB (9) | Feedback input | Monitors divided output voltage vs. 0.8V reference; direct connection for fixed-output modes |
| SS (10) | Soft-start control | Capacitor to GND sets ramp time (1ms per 16.5nF); floating defaults to 0.8ms internal soft-start |
| ISET (11) | Peak current programming | Resistor to GND sets peak current (100mA–1.2A); floating = max, shorted = min; also filters light-load ripple |
| FBO (12) | Feedback comparator output | Open-drain output (20µA pull-up, 70Ω pull-down) for paralleling multiple LTC3630As |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous MOSFET integration | Eliminates external high-side driver and external low-side diode, reducing BOM count and board area |
| Burst Mode® operation | Enables 12µA no-load IQ while sustaining regulation - critical for energy-harvesting and battery-backed systems |
| Programmable peak current limit | Adjusts max output current (100mA–1.2A) via single ISET resistor - optimizes inductor/capacitor size and light-load ripple |
| Fixed-output voltage options | 1.8V/3.3V/5V selectable via VPRG pins - removes need for external feedback resistors in standard rail applications |
| Parallel operation support | FBO pin allows master-slave configuration without external current-sense or error amplifiers - scales output current beyond 500mA |
Applications
| Industrial Control Power | Medical Sensor Supply |
|---|---|
|
Use Scenario: Powering isolated analog front-ends and microcontrollers in PLC I/O modules operating from 24V or 48V DC bus. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering stable 3.3V or 5V from wide-input industrial rail. Use Value: 76V max input withstands load-dump transients; 12µA IQ extends uptime during brownouts; MSE16 footprint fits dense control boards. |
Use Scenario: Providing ultra-low-noise, always-on 1.8V supply for low-power biosensor ADCs and BLE transceivers in portable diagnostic devices. IC Role / Device Role / Timing Role: High-efficiency, low-IQ step-down converter powering mixed-signal subsystems with strict standby current budgets. Use Value: Burst Mode® maintains regulation at µA loads; 0.8V reference enables precise low-voltage outputs; thermal pad ensures reliability in sealed enclosures. |
| Automotive Body Electronics | Avionics Remote I/O |
|
Use Scenario: Regulating 5V for CAN transceivers and door module MCUs from 12V battery with cold-crank (4.5V) and load-dump (60V+) tolerance. IC Role / Device Role / Timing Role: Input-tolerant buck converter handling automotive transient conditions while maintaining clean 5V rail. Use Value: 4V–76V input range covers full automotive spec; UVLO prevents erratic startup below 3.5V; -40°C to 125°C rating meets AEC-Q200 stress requirements. |
Use Scenario: Generating 3.3V for ARINC 429 interface logic and FPGA configuration memory in airborne remote data concentrators. IC Role / Device Role / Timing Role: Ruggedized DC/DC converter supplying fault-tolerant digital rails in high-reliability aerospace systems. Use Value: Exposed-pad MSE16 package ensures thermal stability at altitude; FBO pin enables redundant parallel configuration; 150ns min on-time supports high-VIN/low-VOUT ratios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3630IMSE#TRPBF | Same architecture and pinout; rated for –40°C to 125°C (same as LTC3630AEMSE#TRPBF), but with tighter initial VFB tolerance (±0.5% vs ±1%) and guaranteed performance across full temp range | Preferred for precision analog systems requiring tighter output voltage accuracy over temperature | Select when VFB tolerance ≤0.5% is required; otherwise LTC3630AEMSE#TRPBF offers identical functionality at commercial-grade cost |
| LT8609SIS8E#TRPBF | 42V max VIN, 2.5A output, Silent Switcher® architecture; 2.5µA IQ, 2MHz fixed frequency; different pinout, no FBO, no programmable peak current | Better EMI performance and higher current, but lacks 76V input, paralleling, and wide-IQ optimization for ultra-low-power use cases | Choose for noise-sensitive applications needing >500mA or <3µA IQ; avoid when 76V input, FBO paralleling, or 12µA IQ are mandatory |
Compared with LTC3630IMSE#TRPBF, the LTC3630AEMSE#TRPBF trades guaranteed full-temperature VFB accuracy for lower cost while retaining identical pinout, thermal performance, and feature set. Versus LT8609SIS8E#TRPBF, it prioritizes ultra-wide input range and system-level scalability over EMI reduction and raw current capability.
Availability
LTC3630AEMSE#TRPBF is available at Aetrix Electronics and suitable for industrial control power, medical sensor supply, and automotive body electronics requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LTC3630AEMSE#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 its legacy high-performance power management portfolio with rigorous qualification and long-term support.
The LTC3630A belongs to Linear's high-voltage monolithic buck converter family, designed specifically for industrial, medical, and transportation systems demanding wide-input operation, ultra-low quiescent current, and robust thermal performance in compact packages.
FAQ
What is the absolute maximum input voltage rating for the LTC3630AEMSE#TRPBF?
The absolute maximum input voltage for the LTC3630AEMSE#TRPBF is 80V, as specified in the Absolute Maximum Ratings table. Operation above 76V is not recommended - the device is only guaranteed to function correctly up to 76V under normal operating conditions. Sustained exposure to 80V may cause permanent damage or accelerated aging, especially at elevated temperatures.
Can the LTC3630AEMSE#TRPBF operate in 100% duty cycle dropout mode?
Yes, the LTC3630AEMSE#TRPBF supports true 100% duty cycle operation using its internal P-channel high-side MOSFET. When VIN approaches VOUT, the controller holds the high-side switch continuously on, allowing regulation down to VIN – 65V (provided ≥5mA load is present). This enables reliable operation during brownouts or low-input scenarios common in automotive and industrial systems.
How is the output voltage configured for fixed 3.3V operation on the LTC3630AEMSE#TRPBF?
To configure the LTC3630AEMSE#TRPBF for fixed 3.3V output, connect VPRG1 (Pin 6) to GND and VPRG2 (Pin 7) to the SS pin (Pin 10). This activates the internal 3.3V feedback divider. VFB (Pin 9) must be connected directly to the output rail - no external resistors are needed. Confirm RUN (Pin 5) is pulled above 1.21V to enable switching.
What thermal design considerations apply to the LTC3630AEMSE#TRPBF in MSE16 package?
The LTC3630AEMSE#TRPBF in MSE16 package requires soldering the exposed thermal pad (Pin 17) to a minimum 100mm² PCB copper area connected to GND. With θJA = 45°C/W, a 1W dissipation raises junction temperature by 45°C above ambient. For continuous 500mA output at high VIN/VOUT ratios, thermal relief vias under the pad and airflow are recommended to maintain TJ < 125°C.
Does the LTC3630AEMSE#TRPBF support paralleling multiple units for higher current?
Yes, the LTC3630AEMSE#TRPBF supports current sharing via its FBO (Feedback Comparator Output) pin (Pin 12). Connect the FBO of one "master" LTC3630AEMSE#TRPBF to the VFB pins of one or more "slave" units. The master's feedback comparator drives all units synchronously, enabling combined output currents exceeding 500mA without external current-sense circuitry or complex control loops.
LTC3630AEMSE#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):
- 76V
- Voltage - Output (Min/Fixed):
- 0.8V (1.8V, 3.3V, 5V)
- Voltage - Output (Max):
- 76V
- Current - Output:
- 500mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC3630AEMSE#TRPBF FAQ
1.How can I place an order for LTC3630AEMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3630AEMSE#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 LTC3630AEMSE#TRPBF reliable?
The price and inventory of LTC3630AEMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3630AEMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3630AEMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3630AEMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3630AEMSE#TRPBF?
LTC3630AEMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3630AEMSE#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 LTC3630AEMSE#TRPBF?
For technical support, including LTC3630AEMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3630AEMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3630AEMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3630AEMSE#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 LTC3630AEMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3630AEMSE#TRPBF?
All LTC3630AEMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3630AEMSE#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 LTC3630AEMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3630AEMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3630AEMSE#TRPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
