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Analog Devices Inc. LTC7813MPUH#TRPBF
- Part No.:
- LTC7813MPUH#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC7813MPUH#TRPBF.pdf
- Description:
- IC REG CTRLR BUCK/BOOST
- Quantity:
- Payment:
- Shipping:
Inventory:1,294
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Product details
Overview
LTC7813MPUH#TRPBF from Analog Devices (formerly Linear Technology) is a high-performance, dual-channel synchronous Boost+Buck DC/DC controller driving all-N-channel MOSFET stages. It integrates independent boost and buck controllers supporting cascaded operation for VIN above, below, or equal to VOUT up to 60V; operates from 4.5V–60V bias input (or down to 2.2V post-startup); delivers 34µA no-load IQ with both channels active; and features phase-lockable 75kHz–850kHz switching frequency - used in automotive cold-crank power systems and high-reliability industrial battery supplies.
For engineers reviewing the LTC7813MPUH#TRPBF datasheet, LTC7813MPUH#TRPBF pinout, LTC7813MPUH#TRPBF application, or LTC7813MPUH#TRPBF equivalent, key selection considerations include its –55°C to 150°C extended temperature grade, independent current-sense loop compensation per channel, OPTI-DRIVE gate voltage programmability (5V–10V), RSENSE/DCR sensing flexibility, and continuous non-pulsating input/output current topology that reduces EMI and ripple versus conventional buck-boost regulators.
Technical Context
The LTC7813MPUH#TRPBF implements a cascaded two-stage architecture: Channel 2 (boost) regulates first, feeding Channel 1 (buck) to deliver tightly regulated output. Each channel has dedicated error amplifiers (ITH1/ITH2), feedback inputs (VFB1/VFB2), and current-sense comparators (SENSE1±/SENSE2±) enabling independent loop optimization and fast transient response. The boost stage supports up to 60V output; buck stage supports 0.8V–60V output.
Its control logic includes programmable UVLO thresholds (via DRVUV), selectable light-load modes (Burst Mode®, pulse-skipping, forced continuous via PLLIN/MODE), and synchronized operation via external clock input. Gate drivers support 97.5% max duty cycle (buck) and 99% (boost), with TG/BG rise/fall times under 25ns and <85ns synchronous switch timing delays - critical for high-efficiency, low-noise power conversion in wide-input industrial and automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V–60V bias supply; supports 2.2V minimum after startup when biased from boost output - enables cold-crank operation in 12V/24V automotive systems. |
| Output Voltage Range | Buck: 0.8V–60V; Boost: up to 60V - allows flexible rail generation across industrial and transportation applications. |
| Quiescent Current | 34µA (both channels active, sleep mode); 3.6µA (shutdown) - extends runtime in battery-backed or energy-constrained systems. |
| Switching Frequency | 75kHz–850kHz, phase-lockable - permits EMI-sensitive designs and synchronization with system clocks. |
| Operating Temperature | –55°C to +150°C junction - qualified for extended-temperature automotive (AEC-Q100 Grade 1) and harsh-environment industrial use. |
| Package | 32-pin 5mm × 5mm QFN (UH) with exposed thermal pad - provides low θJA (44°C/W) for high-power density layouts. |
| Current Sensing | RSENSE or lossless DCR sensing supported - enables accurate overcurrent protection without added resistive losses. |
Pinout & Package
Package: 32-lead (5mm × 5mm) plastic QFN (UH), exposed pad (Pin 33) soldered to PCB ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW1, SW2 (Pins 1, 30) | Switch node connections | Direct connection points to buck and boost inductor switches - require low-inductance layout and ceramic decoupling near each node. |
| TG1, TG2 (Pins 2, 29) | Top-gate drivers | Floating N-channel gate drives referenced to SW nodes - require bootstrap capacitors between BOOSTx and SWx pins. |
| BG1, BG2 (Pins 27, 31) | Bottom-gate drivers | GND-referenced N-channel gate drives - drive synchronous rectifiers with 1.0Ω pull-down resistance for fast turn-off. |
| VFB1, VFB2 (Pins 6, 19) | Buck/boost feedback inputs | High-impedance inputs (±50nA/±7µA) sensing output divider voltage - enable precise regulation with minimal loading error. |
| SENSE1+, SENSE1– (Pins 7, 8) SENSE2+, SENSE2– (Pins 12, 13) | Differential current sense inputs | Support bidirectional sensing; SENSE2+ sources current - allow accurate peak-current-mode control with RSENSE or DCR networks. |
| DRVCC (Pin 24) | Gate driver supply output | Programmable 5V–10V LDO output (via DRVSET) - sets MOSFET VGS level to optimize conduction loss vs. switching loss trade-off. |
| PLLIN/MODE (Pin 10) | Synchronization & light-load mode control | Accepts external clock (75kHz–850kHz) for forced continuous mode or configures Burst Mode®/pulse-skipping - eliminates low-load efficiency dropouts. |
Key Features
| Feature | Design Value |
|---|---|
| Cascaded Boost+Buck topology | Delivers continuous, non-pulsating input and output currents - reduces EMI filter size by >50% and lowers RMS input capacitor stress versus single-stage buck-boost. |
| Independent loop compensation | Separate ITH1/ITH2 pins and VFB1/VFB2 feedback paths - enable optimized transient response for each stage without cross-coupling. |
| OPTI-DRIVE gate voltage control | DRVSET pin programs DRVCC from 5V to 10V - allows matching of gate drive to specific MOSFET Qg/Vth for peak efficiency at target load. |
| Extended temperature qualification | –55°C to +150°C operation (MP grade) - meets requirements for under-hood automotive, downhole, and military-grade power subsystems. |
| No external bootstrap diodes | Integrated charge pump for BOOST2 - eliminates discrete diode and associated board space, reliability risk, and forward-voltage drop loss. |
Applications
| Automotive Cold-Crank Power Supply | Industrial Dual-Rail Power System |
|---|---|
Use Scenario: Maintaining stable 5V/12V outputs during engine start when battery dips to 2.2V for 100ms. IC Role / Device Role / Timing Role: LTC7813MPUH#TRPBF operates in cascaded mode: boost stage sustains buck input above dropout while regulating output against deep input transients. Use Value: Eliminates need for backup supercapacitors or secondary hold-up converters - reduces BOM count and improves system reliability. | Use Scenario: Generating isolated 24V and 5V rails from a 12–48V industrial bus for PLC I/O and microcontroller domains. IC Role / Device Role / Timing Role: LTC7813MPUH#TRPBF uses independent buck and boost controllers to regulate each rail with separate feedback and compensation. Use Value: Enables simultaneous, ripple-isolated outputs without inter-stage coupling - simplifies EMC compliance and avoids cross-regulation issues. |
| High-Power Battery-Operated Equipment | Aerospace Avionics Power Module |
Use Scenario: Powering motor drives and sensors from 24V Li-ion packs with >10-hour standby life requirement. IC Role / Device Role / Timing Role: LTC7813MPUH#TRPBF leverages 34µA sleep-mode IQ and programmable light-load modes to minimize quiescent loss during idle periods. Use Value: Extends usable battery capacity by >15% versus standard controllers - directly increases equipment operational time between charges. | Use Scenario: Providing fault-tolerant 28V and 5V supplies in avionics boxes where radiation-hardened components are impractical. IC Role / Device Role / Timing Role: LTC7813MPUH#TRPBF's –55°C to +150°C rating and robust UVLO/overvoltage protection meet DO-160 Section 22 environmental test requirements. Use Value: Qualifies for Class E (extended temperature) avionics without derating - avoids costly custom qualification cycles for commercial-grade alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-stage synchronous controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC7810MPUH#TRPBF | Single-channel synchronous buck controller; no boost stage; 3.5V–40V input; 25µA IQ (one channel) | Only suitable for step-down-only applications; cannot support VIN-above-VOUT or cold-crank scenarios | Select only when output is always lower than input and cascade topology is unnecessary |
| LTC7804HUH#TRPBF | Single-stage, wide-VIN (4.5V–60V) buck-boost controller; 40µA IQ; fixed 4-switch topology; no independent loop control | Provides simpler integration but lacks independent optimization per stage and exhibits pulsed input current | Choose for cost-sensitive, space-constrained designs where EMI filtering budget allows higher ripple |
Compared with LTC7810MPUH#TRPBF and LTC7804HUH#TRPBF, the LTC7813MPUH#TRPBF uniquely delivers cascaded boost+buck operation with fully independent regulation loops, enabling superior transient response, lower EMI, and true wide-range input-to-output flexibility - essential for mission-critical automotive and aerospace power systems.
Availability
LTC7813MPUH#TRPBF is available at Aetrix Electronics and suitable for automotive cold-crank systems, industrial dual-rail power supplies, and high-reliability battery-operated equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC7813MPUH#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 high-performance analog and power management portfolio with rigorous automotive and industrial qualification standards.
The LTC7813MPUH#TRPBF belongs to the LTC78xx family of high-voltage synchronous controllers designed specifically for demanding power conversion applications requiring extended temperature operation, ultra-low quiescent current, and flexible multi-topology support.
FAQ
What is the operating temperature range of the LTC7813MPUH#TRPBF?
The LTC7813MPUH#TRPBF is specified for operation from –55°C to +150°C junction temperature - qualifying it for under-hood automotive, downhole, and aerospace applications where extreme thermal environments exist. This MP-grade rating exceeds standard industrial (–40°C to +125°C) and automotive (–40°C to +150°C) grades, and is verified through full characterization and testing across the full range.
How does the LTC7813MPUH#TRPBF achieve low EMI compared to conventional buck-boost controllers?
The LTC7813MPUH#TRPBF achieves low EMI by using a cascaded Boost+Buck architecture that delivers continuous, non-pulsating input and output currents - unlike single-stage 4-switch buck-boost topologies that produce discontinuous current waveforms. This reduces high-frequency harmonic content and eases filtering requirements, resulting in up to 20dB lower conducted EMI in typical 24V-to-12V automotive applications.
Can the LTC7813MPUH#TRPBF operate with only the buck or only the boost channel enabled?
Yes, the LTC7813MPUH#TRPBF supports independent channel enable/disable via RUN1 and RUN2 pins. Either channel can be disabled while the other remains active - for example, disabling the boost stage to use only the buck controller for step-down conversion from a stable high-voltage source, or disabling the buck stage to use only boost for voltage boosting.
What current sensing methods does the LTC7813MPUH#TRPBF support?
The LTC7813MPUH#TRPBF supports both precision shunt resistor (RSENSE) and lossless inductor DCR sensing on both channels. Its differential SENSE1± and SENSE2± inputs accommodate bidirectional sensing, and internal offsets allow accurate current limit setting across temperature - with three programmable threshold levels (43mV/75mV/90mV) selected via the ILIM pin.
Is the LTC7813MPUH#TRPBF pin-compatible with other members of the LTC7813 family?
Yes, the LTC7813MPUH#TRPBF shares identical pinout, package (32-pin 5mm × 5mm QFN), and electrical interface with all LTC7813 variants (E, I, H, MP grades). Only the temperature qualification and screening differ - allowing direct substitution in existing designs when extended temperature operation is required, without PCB or schematic changes.
LTC7813MPUH#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Boost
- Number of Outputs:
- 2
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 60V
- Frequency - Switching:
- 105kHz ~ 835kHz, 350kHz ~ 535kHz
- Duty Cycle (Max):
- 96%, 99%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Enable, Frequency Control, Power Good, Soft Start, Tracking
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (5x5)
LTC7813MPUH#TRPBF FAQ
1.How can I place an order for LTC7813MPUH#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC7813MPUH#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 LTC7813MPUH#TRPBF reliable?
The price and inventory of LTC7813MPUH#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC7813MPUH#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC7813MPUH#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC7813MPUH#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC7813MPUH#TRPBF?
LTC7813MPUH#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC7813MPUH#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 LTC7813MPUH#TRPBF?
For technical support, including LTC7813MPUH#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC7813MPUH#TRPBF requirements.
6.How does Aetrix verify that LTC7813MPUH#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC7813MPUH#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 LTC7813MPUH#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC7813MPUH#TRPBF?
All LTC7813MPUH#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC7813MPUH#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 LTC7813MPUH#TRPBF part is unused and in its original packaging.
Return procedure for LTC7813MPUH#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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