My Inquiry
My Account
Analog Devices Inc. LTC3807MPUDC#TRPBF
- Part No.:
- LTC3807MPUDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
LTC3807MPUDC#TRPBF.pdf
- Description:
- IC REG CTRLR BUCK 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,190
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3807MPUDC#TRPBF from Analog Devices (formerly Linear Technology) is a high-performance, low-quiescent-current synchronous step-down DC/DC controller designed for wide-input intermediate bus and battery-powered systems. It drives all-N-channel MOSFETs, supports 4V–38V input, regulates output from 0.8V to 24V, delivers up to 10A with external FETs, and operates in Burst Mode® at light loads to achieve 50μA no-load IQ - critical for automotive always-on and portable digital applications.
For engineers reviewing the LTC3807MPUDC#TRPBF datasheet, LTC3807MPUDC#TRPBF pinout, LTC3807MPUDC#TRPBF application, or LTC3807MPUDC#TRPBF equivalent, key selection considerations include its –55°C to 150°C extended temperature rating, phase-lockable 75kHz–750kHz switching frequency, OPTI-LOOP® compensation for broad capacitor/ESR compatibility, precision 0.8V reference, and programmable current limit via ILIM pin.
Technical Context
The LTC3807MPUDC#TRPBF implements a constant-frequency current-mode control architecture with dual gate drivers (TG/BG), internal 5.1V LDO (INTVCC), and selectable light-load operation modes (Burst Mode®, pulse-skipping, or forced continuous) via the PLLIN/MODE pin. Its differential current sensing supports both RSENSE and DCR methods, with three programmable current-limit thresholds set by ILIM pin state (GND/FLOAT/INTVCC).
It features precision feedback regulation (±0.8% over temperature), power-good monitoring (PGOOD), soft-start/tracking via TRACK/SS pin with 10µA pull-up, and robust protection including output overvoltage detection, current foldback during short-circuit, and dropout recovery with BOOST capacitor recharge management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 38V - supports 12V/24V/36V battery chemistries and industrial intermediate buses. |
| Output Voltage Range | 0.8V to 24V - programmable via external resistor divider; enables single-controller multi-rail designs. |
| No-Load Quiescent Current | 50µA - extends runtime in battery-backed systems without sacrificing transient response. |
| Switching Frequency Range | 75kHz to 750kHz - phase-lockable to external clock or programmable via FREQ pin resistor. |
| Reference Voltage Accuracy | ±0.8% over –55°C to 150°C - ensures stable output regulation across extreme automotive environments. |
| Current Sense Threshold Options | 22mV / 43mV / 64mV - selectable via ILIM pin to match MOSFET RDS(on) or sense resistor value. |
| Shutdown Current | 14µA - ultra-low standby draw when RUN pin < 0.7V, suitable for always-on vehicle modules. |
Pinout & Package
Package: 20-pin 3mm × 4mm QFN (UDC) with exposed thermal pad (Pin 21 = SGND), rated for –55°C to 150°C junction temperature (θJA = 43°C/W). Requires soldering of exposed pad to PCB ground for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TRACK/SS) | Soft-start & tracking input | Internal 10µA pull-up charges external capacitor for linear VOUT ramp; accepts external voltage divider for supply tracking. |
| 2 (FREQ) | Oscillator frequency control | 20µA pull-up sets VCO voltage; resistor to GND programs 50kHz–900kHz; INTVCC/GND selects fixed 535kHz/350kHz. |
| 3 (PLLIN/MODE) | Light-load mode & sync input | GND = Burst Mode®; INTVCC = forced continuous; 1.2V–(INTVCC–1.3V) = pulse-skipping; external clock = PLL sync. |
| 4 (RUN) | Enable/shutdown control | <1.16V disables regulation; <0.7V shuts down entire IC (14µA IQ); internal 7µA pull-up allows floating for always-on use. |
| 5 (SENSE–) | Current sense negative input | Differential input to current comparator; powers comparator when > INTVCC – 0.5V. |
| 6 (SENSE+) | Current sense positive input | Connects to RSENSE or DCR network; trip threshold set by ITH voltage and ILIM pin state. |
| 7 (VFB) | Feedback input | Compares output voltage (via resistive divider) to 0.8V reference; PGOOD asserts when within ±10%. |
| 8 (ITH) | Error amplifier output | Controls peak inductor current; voltage directly sets current comparator threshold in servo loop. |
| 9 (PGOOD) | Power-good indicator | Open-drain output pulled low if VFB deviates >±10% from target; 25µs fault delay prevents false triggering. |
| 10 (TG) | Top N-MOSFET gate driver | Floating driver with 2.5Ω pull-up / 1.5Ω pull-down; swing = INTVCC superimposed on SW node. |
| 11 (SW) | Switch node connection | Connects to inductor and source of bottom FET; referenced for BOOST capacitor charging path. |
| 12 (BOOST) | Bootstrap supply | Capacitor between BOOST and SW provides floating bias for TG; diode from BOOST to INTVCC maintains charge. |
| 13 (BG) | Bottom N-MOSFET gate driver | Ground-referenced driver with 2.4Ω pull-up / 1.1Ω pull-down; 0–5.1V swing for synchronous rectification. |
| 14 (INTVCC) | Internal LDO output | 5.1V ±3%, powers drivers and logic; decoupled with ≥2.2µF ceramic to PGND; sourced from VIN or EXTVCC. |
| 15 (EXTVCC) | External bias input | Enables EXTVCC LDO (4.7V switchover) to power INTVCC from efficient external rail (e.g., regulated output). |
| 16 (PGND) | Power ground | Return for BG driver and bottom FET source; must be separate from SGND but tied at single point near CIN. |
| 17 (VIN) | Main input supply | Bypassed to SGND with ceramic capacitor; powers internal VIN LDO when EXTVCC inactive. |
| 18 (ILIM) | Current limit select | GND/FLOAT/INTVCC selects max sense threshold: 22mV/43mV/64mV - matches RSENSE or MOSFET VDS. |
| 19 (SGND) | Small-signal ground | Reference for VFB, ITH, TRACK/SS, etc.; routed separately from PGND to minimize noise coupling. |
| 20 (SGND) | Small-signal ground | Dual SGND pins ensure low-impedance analog reference path; both must connect to system SGND. |
| 21 (Exposed Pad) | Thermal & signal ground | Electrically connected to SGND; mandatory soldering to PCB thermal plane for θJA = 43°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| OPTI-LOOP® compensation | Allows stable loop response across wide range of output capacitor values (10µF–1000µF) and ESR (0.5mΩ–100mΩ), eliminating need for custom compensation networks. |
| 99% maximum duty cycle | Enables ultra-low dropout operation (e.g., 24VIN → 24VOUT), critical for battery backup and hold-up applications where input may sag near output voltage. |
| Programmable light-load mode | Three distinct operating modes (Burst Mode®, pulse-skipping, forced continuous) selected via single pin, enabling optimal efficiency vs. ripple trade-off per load condition. |
| Robust current foldback | Reduces MOSFET power dissipation during short-circuit by lowering peak current limit - prevents thermal runaway without disabling regulation. |
| Wide temperature grade | –55°C to 150°C guaranteed operation (LTC3807MP grade) meets AEC-Q100 stress requirements for under-hood automotive electronics. |
Applications
| Automotive Infotainment Power | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Powering 3.3V/5V rails for SoC, display controllers, and CAN transceivers in head units operating from 9V–16V battery with cold-crank down to 4.5V. IC Role / Device Role / Timing Role: Primary step-down controller managing high-efficiency conversion with Burst Mode® to maintain <50µA standby IQ during sleep states. Use Value: Enables 15-year battery drain compliance and seamless wake-from-sleep response due to fast start-up and precise 0.8V reference stability over –40°C to 125°C ambient. |
Use Scenario: Generating isolated 12V/24V auxiliary supplies for sensor excitation and analog front-end circuitry in factory-floor PLCs exposed to 85°C ambient and EMI. IC Role / Device Role / Timing Role: High-reliability synchronous buck controller with programmable frequency (350kHz/535kHz) to avoid noise-sensitive bands and support compact magnetics. Use Value: Delivers 94% efficiency at full load while maintaining <±1% output regulation across line/load/temperature - reducing thermal design burden in sealed enclosures. |
| Medical Portable Monitor | Telecom Remote Radio Unit |
|
Use Scenario: Converting 12V battery to tightly regulated 1.2V/1.8V/3.3V rails for FPGA, ADCs, and wireless comms in handheld diagnostic devices requiring 72-hour runtime. IC Role / Device Role / Timing Role: Low-IQ controller with TRACK/SS pin enabling coordinated soft-start across multiple outputs to prevent inrush current tripping battery protection circuits. Use Value: 50µA quiescent current extends battery life; OPTI-LOOP® ensures stable regulation with polymer capacitors used for space-constrained layouts. |
Use Scenario: Providing 28V bias for GaN PA stages and 5V logic rails in outdoor 5G RRUs powered from 48V PoE or solar-charged batteries with wide input variation. IC Role / Device Role / Timing Role: Wide-input (4V–38V) controller supporting brownout resilience and programmable current limit to protect expensive RF power transistors during fault conditions. Use Value: 24V output capability and 750kHz max frequency enable compact, high-density power stages meeting ETSI EN 301 489-1 EMC requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3891MPUDC#TRPBF | Dual-output controller with integrated 5V/3.3V bias LDOs; higher IQ (75µA); same 4V–38V input and –55°C to 150°C rating. | Eliminates need for external bias supplies in multi-rail systems; adds complexity for single-output designs. | Choose LTC3891MPUDC#TRPBF when powering multiple independent rails with shared input and requiring integrated auxiliary supplies. |
| LM5116MHX/NOPB | Single-output controller with 6V–100V input; 100µA IQ; no Burst Mode®; requires external bootstrap diode; different pinout and compensation scheme. | Targets high-voltage industrial inputs (e.g., 48V telecom); lacks low-IQ optimization for battery systems. | Choose LM5116MHX/NOPB only for >38V input applications where LTC3807MPUDC#TRPBF's voltage range is insufficient. |
Compared with LTC3891MPUDC#TRPBF, the LTC3807MPUDC#TRPBF offers lower quiescent current and simpler layout for single-rail designs; compared with LM5116MHX/NOPB, it provides superior light-load efficiency and integrated features for battery-critical systems but lacks high-voltage input capability.
Availability
LTC3807MPUDC#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC power modules, and medical portable monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC3807MPUDC#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 continues its legacy of high-performance analog and power management ICs, emphasizing precision, reliability, and ruggedized operation for demanding applications.
The LTC3807MPUDC#TRPBF belongs to Linear's high-efficiency synchronous controller product line, engineered specifically for automotive, industrial, and portable systems requiring ultra-low quiescent current, wide input range, and extended temperature operation.
FAQ
What is the operating temperature range of the LTC3807MPUDC#TRPBF?
The LTC3807MPUDC#TRPBF is specified for operation from –55°C to 150°C junction temperature, making it suitable for under-hood automotive, industrial, and aerospace applications where extreme thermal environments are encountered. This extended grade exceeds standard commercial and industrial temperature ranges and is validated per Linear Technology's MP (Military/High-Reliability) qualification standards.
How does the LTC3807MPUDC#TRPBF achieve 50µA quiescent current?
The LTC3807MPUDC#TRPBF achieves 50µA no-load quiescent current through optimized internal biasing, selective circuit shutdown in Burst Mode®, and low-leakage process technology. When the ITH voltage drops below 0.425V, the controller enters sleep mode - disabling gate drivers, oscillator, and most analog blocks while retaining core regulation capability and fast wake-up response.
Can the LTC3807MPUDC#TRPBF drive high-side and low-side N-channel MOSFETs simultaneously?
Yes, the LTC3807MPUDC#TRPBF integrates dedicated high-current drivers for both top (TG) and bottom (BG) N-channel MOSFETs. The TG driver uses a floating bootstrap architecture (with BOOST pin) to provide gate voltage above the switch node, while BG drives from ground to INTVCC, enabling fully synchronous rectification and high efficiency across load conditions.
What protection features are built into the LTC3807MPUDC#TRPBF?
The LTC3807MPUDC#TRPBF includes output overvoltage protection (OVP) triggered at ±10% deviation from the regulated VFB voltage, current foldback limiting during short-circuit events, undervoltage lockout (UVLO) on INTVCC, and thermal shutdown. Its PGOOD output provides system-level fault signaling with 25µs delay to reject transient disturbances.
Is the LTC3807MPUDC#TRPBF pin-compatible with other members of the LTC3807 family?
Yes, the LTC3807MPUDC#TRPBF shares identical pinout and package (20-pin 3mm × 4mm QFN) with all UDC-package variants of the LTC3807 family (e.g., LTC3807EUDC#TRPBF, LTC3807HUDC#TRPBF), enabling drop-in replacement across temperature grades without PCB redesign. Functional behavior differs only in guaranteed temperature range and certain parameter limits.
LTC3807MPUDC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4V ~ 38V
- Frequency - Switching:
- 50kHz ~ 900kHz
- Duty Cycle (Max):
- 99%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Current Limit, Enable, Frequency Control, Soft Start, Tracking
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x4)
LTC3807MPUDC#TRPBF FAQ
1.How can I place an order for LTC3807MPUDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3807MPUDC#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 LTC3807MPUDC#TRPBF reliable?
The price and inventory of LTC3807MPUDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3807MPUDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3807MPUDC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3807MPUDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3807MPUDC#TRPBF?
LTC3807MPUDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3807MPUDC#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 LTC3807MPUDC#TRPBF?
For technical support, including LTC3807MPUDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3807MPUDC#TRPBF requirements.
6.How does Aetrix verify that LTC3807MPUDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3807MPUDC#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 LTC3807MPUDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3807MPUDC#TRPBF?
All LTC3807MPUDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3807MPUDC#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 LTC3807MPUDC#TRPBF part is unused and in its original packaging.
Return procedure for LTC3807MPUDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3807MPUDC#TRPBF Tags
-
UCC28C45DR
Texas Instruments
-
UCC28C40DR
Texas Instruments
-
UCC28C43DR
Texas Instruments
-
ZXSC410E6TA
Diodes Incorporated
-
LM3524DMX/NOPB
Texas Instruments
-
LM3489MMX/NOPB
Texas Instruments
-
MIC2102YML-TR
Microchip Technology
-
LM5148RGYR
Texas Instruments
-
TL598CDR
Texas Instruments
-
LM5155DSSR
Texas Instruments
-
LM25085MYX/NOPB
Texas Instruments
-
UCC2813DTR-0
Texas Instruments
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…
