My Inquiry
My Account
Analog Devices Inc. LT8630EFE#TRPBF
- Part No.:
- LT8630EFE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width), 16 Leads, Exposed Pad
- Datasheet:
-
LT8630EFE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 600MA 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,748
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT8630EFE#TRPBF from Analog Devices is a 100V, 0.6A synchronous step-down DC/DC regulator with boundary-mode PWM control, 0.808V feedback reference, and 16µA quiescent current at 12VIN→5VOUT. It operates across 3V–100V input, delivers regulated output from 0.8V to 60V, and integrates top/bottom MOSFETs in a thermally enhanced 20-lead TSSOP package - used in telecom power supplies and industrial distributed regulation.
For engineers reviewing the LT8630EFE#TRPBF datasheet, LT8630EFE#TRPBF pinout, LT8630EFE#TRPBF application, or LT8630EFE#TRPBF equivalent, key selection criteria include ultra-wide VIN range (3–100V), Burst Mode® operation for sub-20µA no-load IQ, programmable UVLO via EN/UV pin, and ±7.5% power-good flag accuracy with 1.9% hysteresis.
Technical Context
The LT8630EFE#TRPBF employs peak current mode control with variable-frequency boundary-mode switching to minimize switching losses across wide input/output combinations. Its internal VC node regulates per-cycle peak inductor current, while soft-start and tracking are implemented via a 4.5µA constant-current source on TR/SS.
It features dual supply sourcing: internal bias is drawn from VOUT when ≥3.5V (reducing VIN IQ), otherwise from VIN. The device tolerates open/short faults on EN/UV, FB, TR/SS, and PG pins, and includes overtemperature protection activating above 150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 100V - supports automotive cold-crank, 48V/72V telecom, and industrial unregulated rails without pre-regulation. |
| Max Output Current | 0.6A at 50VIN→5VOUT - guaranteed minimum with 15µH inductor; up to 0.9A possible under optimized conditions. |
| Feedback Reference | 0.808V ±12mV - precise regulation point enabling accurate output programming with standard resistor dividers. |
| Quiescent Current | 16µA at 12VIN→5VOUT - enables multi-year battery life in always-on IoT and remote sensor applications. |
| Power Good Accuracy | ±7.5% of VFBREF - provides reliable system-level sequencing and fault detection without external monitoring. |
| Switching Architecture | Boundary-mode PWM - eliminates fixed-frequency switching losses, maximizing efficiency across light-to-full load. |
| Shutdown Current | <5µA - ensures negligible battery drain during system sleep or standby modes. |
Pinout & Package
LT8630EFE#TRPBF is housed in a 20-lead plastic TSSOP package (FE20 variant) with exposed thermal pad (Pin 21 = GND). High-voltage lead spacing meets reinforced isolation requirements for 100V systems. The exposed pad must be soldered to PCB ground plane for thermal performance (θJA = 40°C/W, θJC(PAD) = 10°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Main power input & switch drain | Supplies internal circuitry and connects to top MOSFET drain; requires local 2.2µF ceramic decoupling. |
| EN/UV (3) | Enable & UVLO programming | Active-high enable with 1.19V threshold; external resistor divider sets custom undervoltage lockout point. |
| PG (5) | Open-drain power-good flag | Sinks current when VOUT deviates >±7.5% from regulation; 1.9% hysteresis prevents chatter during transients. |
| RT (8) | Frequency setting | Connect 8.66kΩ to GND to set internal oscillator reference; determines boundary-mode timing behavior. |
| TR/SS (10) | Soft-start & tracking control | 4.5µA constant-current source charges external capacitor; enables controlled ramp-up and output voltage tracking. |
| FB (11) | Feedback input | Negative input to error amplifier; regulated to 0.808V; sets output voltage via external resistor divider. |
| VOUT (12) | Output sense node | Connects to internal current-sense resistor; ties directly to output capacitor for accurate current sensing. |
| IND (14) | Inductor connection | High-side inductor terminal; carries full switched current; requires low-inductance PCB layout. |
| INTVCC (16) | Internal LDO bypass | Bypass with 2.2µF ceramic capacitor; powers internal 3V rail; must not be loaded externally. |
| BST (18) | Bootstrap drive | Drives top MOSFET gate above VIN; requires 0.1µF capacitor between BST and SW pins. |
| SW (20) | Switch node | Connection point of internal top/bottom switches; high dI/dt node requiring minimal loop area. |
| GND (21) | Thermal & signal ground | Exposed pad - sole ground connection; must be soldered to large copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Burst Mode® Operation | Reduces input quiescent current to 16µA at no load while maintaining <5mV output ripple - critical for battery-powered systems. |
| Programmable Undervoltage Lockout | EN/UV pin accepts external resistor divider to set custom VIN turn-on threshold - enables flexible system-level brownout protection. | Flexible Output Tracking | TR/SS pin supports both soft-start ramping and coordinated voltage sequencing with other regulators via external voltage source. |
| Short-Circuit & Overload Protection | Automatic foldback via TR/SS discharge during overload; recovers with full soft-start after fault removal - avoids latch-up. |
| High-Voltage Lead Spacing | TSSOP package maintains creepage/clearance for 100V operation - eliminates need for custom isolation spacing on PCB. |
Applications
| Telecom Power Supply | Distributed Industrial Regulation |
|---|---|
|
Use Scenario: Regulating 48V or 72V backplane supplies to 12V/5V/3.3V for line cards and baseband units. IC Role / Device Role / Timing Role: Primary non-isolated buck converter delivering stable, low-noise intermediate bus voltage. Use Value: 94% peak efficiency at 48V→12V/600mA eliminates heatsinking; 100V rating withstands telecom surge transients. |
Use Scenario: Local point-of-load conversion in PLC I/O modules, motor drives, and factory automation controllers. IC Role / Device Role / Timing Role: Synchronous step-down regulator powering microcontrollers, ADCs, and isolated gate drivers. Use Value: 0.808V reference enables tight tolerance output; PG flag synchronizes firmware boot sequence with power rail stability. |
| Automotive ECU Power | Remote Sensor Node Supply |
|
Use Scenario: Powering engine control units and ADAS domain controllers from 12V battery with cold-crank support. IC Role / Device Role / Timing Role: Input-stage buck converter handling 3V–16V (cold crank) to 5V/3.3V for safety-critical logic. Use Value: 3V minimum VIN enables operation during cranking; 5µA shutdown current preserves battery during vehicle sleep. |
Use Scenario: Long-life power for wireless sensor nodes deployed in inaccessible locations (e.g., structural health monitoring). IC Role / Device Role / Timing Role: Primary energy-harvesting or battery-fed DC/DC regulator supplying MCU and RF transceiver. Use Value: 16µA no-load IQ extends 2xAA battery life beyond 10 years; Burst Mode® maintains regulation without wake-up jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8640S-1 | Higher 4A output, 40V max VIN, integrated compensation, lower 2.5µA IQ in Silent Switcher® mode. | Not suitable for >40V inputs; lacks 100V rating and programmable UVLO; optimized for EMI-sensitive applications. | Select LT8640S-1 only when input ≤40V and ultra-low EMI is required; not drop-in for LT8630EFE#TRPBF's 100V use cases. |
| LM5164QPWPRQ1 | 65V max VIN, 0.6A, 13µA IQ, adjustable frequency, no integrated BST capacitor requirement. | Lacks PG flag, no TR/SS tracking, wider VFB tolerance (±1.5%), and no Burst Mode® - higher light-load ripple. | Choose LM5164QPWPRQ1 for AEC-Q100 automotive qualification where 65V suffices; avoid when PG signaling or sub-5mV ripple is mandatory. |
Compared with LT8640S-1 and LM5164QPWPRQ1, the LT8630EFE#TRPBF uniquely combines 100V operation, ±7.5% PG accuracy, and 16µA Burst Mode® IQ - making it irreplaceable in telecom and high-input industrial designs where those three parameters are simultaneously required.
Availability
LT8630EFE#TRPBF is available at Aetrix Electronics and suitable for telecom power supplies, industrial distributed regulation, and automotive ECU power requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT8630EFE#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets.
The LT8630EFE#TRPBF belongs to Analog Devices' µModule®-adjacent monolithic DC/DC regulator family, designed specifically for ultra-wide-input industrial and telecom power conversion where reliability, efficiency, and fault tolerance are critical.
FAQ
What is the maximum input voltage rating for the LT8630EFE#TRPBF?
The LT8630EFE#TRPBF has an absolute maximum input voltage rating of 100V on the VIN pin, with guaranteed operation from 3V to 100V. This enables direct regulation from 48V/72V telecom supplies and automotive battery rails including cold-crank conditions down to 3V. Exceeding 100V risks permanent damage per Absolute Maximum Ratings.
Does the LT8630EFE#TRPBF support output voltage tracking during power-up?
Yes, the LT8630EFE#TRPBF supports output voltage tracking via its TR/SS pin. When an external voltage ramp is applied to TR/SS, the FB node follows that ramp until regulation is achieved - enabling synchronized startup with other rails. The internal 4.5µA current source also allows simple capacitor-based soft-start for single-rail applications.
What is the purpose of the BST pin on the LT8630EFE#TRPBF?
The BST pin on the LT8630EFE#TRPBF provides gate drive voltage for the internal high-side MOSFET. It requires a 0.1µF ceramic capacitor connected between BST and SW pins to generate a bootstrap voltage ~2.4V above SW, ensuring full enhancement of the top switch. Improper BST capacitor placement causes erratic switching or failure to start.
How does the LT8630EFE#TRPBF achieve such low quiescent current?
The LT8630EFE#TRPBF achieves 16µA quiescent current through Burst Mode® operation: it delivers discrete energy packets to the output capacitor, then enters deep sleep where most internal circuitry is disabled. During sleep, only essential bias circuits remain active - minimizing VIN current while maintaining regulation and keeping output ripple below 5mV.
Can the LT8630EFE#TRPBF be used in automotive applications?
Yes, the LT8630EFE#TRPBF is qualified for operation from –40°C to +125°C junction temperature and supports automotive cold-crank (down to 3V VIN). Its 100V rating handles load-dump transients, and the PG flag enables safe MCU boot sequencing. However, it is not AEC-Q200 qualified - for certified automotive use, consider LM5164QPWPRQ1 instead.
LT8630EFE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width), 16 Leads, Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 100V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 60V
- Current - Output:
- 600mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP-EP
LT8630EFE#TRPBF FAQ
1.How can I place an order for LT8630EFE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8630EFE#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 LT8630EFE#TRPBF reliable?
The price and inventory of LT8630EFE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8630EFE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8630EFE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8630EFE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8630EFE#TRPBF?
LT8630EFE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8630EFE#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 LT8630EFE#TRPBF?
For technical support, including LT8630EFE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8630EFE#TRPBF requirements.
6.How does Aetrix verify that LT8630EFE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8630EFE#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 LT8630EFE#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8630EFE#TRPBF?
All LT8630EFE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8630EFE#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 LT8630EFE#TRPBF part is unused and in its original packaging.
Return procedure for LT8630EFE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT8630EFE#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…
