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Analog Devices Inc. LTC7880EUKG#PBF
- Part No.:
- LTC7880EUKG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC7880EUKG#PBF.pdf
- Description:
- 60V DUAL STEP-UP CONTROLLER WITH
- Quantity:
- Payment:
- Shipping:
Inventory:4,294
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Product details
Overview
LTC7880EUKG#PBF from Analog Devices is a dual-output, 60V synchronous step-up DC/DC controller with PMBus/I²C digital power system management, constant-frequency current-mode control, and independent programmable loop compensation for each channel. It supports up to 6-phase PolyPhase® operation, delivers ±0.5% output voltage accuracy over temperature, and integrates 16-bit ADCs and 12-bit DACs for telemetry readback in industrial and automotive start-stop power systems.
For engineers reviewing the LTC7880EUKG#PBF datasheet, LTC7880EUKG#PBF pinout, LTC7880EUKG#PBF application, or LTC7880EUKG#PBF equivalent, key selection considerations include its 52-lead QFN package, dual 5V–40V input / up-to-60V output capability, I²C/PMBus telemetry (input/output voltage/current, temperature, faults), programmable gate drive (6.3V–9V), and EEPROM-based fault logging with ECC.
Technical Context
The LTC7880EUKG#PBF implements analog current-mode control with independent error amplifiers per channel (gm range 1.00–5.76 mmho, 3-bit resolution), enabling precise regulation across wide VIN (5V–40V) and VOUT (up to 60V) ranges. Its dual-channel architecture supports asynchronous or synchronized operation via external SYNC, with phase offsets configurable from 0° to 300° in 30° steps.
Digital power management is realized through a PMBus-compliant interface supporting full telemetry (16-bit VOUT, 10-bit IIN/IOUT, 0.25°C TSENSE), programmable soft-start/stop, sequencing, margining, OV/UV/OC protection, and real-time loop compensation tuning. Internal EEPROM stores configuration, fault logs, and calibration data with ECC and 10-year retention at TJ ≤ 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 40V continuous; operates down to 2.5V after startup when VBIAS is powered from VOUT - enables cold-crank support in automotive systems. |
| Output Voltage Range | Up to 60V per channel (Range 0: 12–58V; Range 1: 6–28V) with ±0.5% total unadjusted error - ensures stable high-voltage bias for sensors or RF stages. |
| Switching Frequency | 50kHz to 500kHz, programmable via resistor or PMBus - allows optimization of efficiency vs. size for 6.8µH inductors and ceramic output capacitors. |
| PolyPhase® Support | Accurate current sharing across up to 6 phases (50kHz–500kHz) - enables scalable high-current boost designs without external current-sharing circuitry. |
| Digital Interface | PMBus v1.3/I²C compliant with 400kHz max clock, integrated 16-bit ADC and 12-bit DAC - provides real-time telemetry and closed-loop digital servo control. |
| Package & Thermal | 52-lead 7mm × 8mm QFN with exposed GND pad (θJC = 2°C/W); rated for –40°C to 125°C junction - supports high-power density layouts with direct thermal path to PCB. |
| Gate Drive | Programmable 6.3V–9V N-channel MOSFET drivers (TG/BG), 50ns dead-time control - maximizes efficiency by optimizing RDS(on) conduction vs. switching losses. |
Pinout & Package
52-lead plastic QFN (7mm × 8mm, UKG package), exposed thermal pad (Pin 53) soldered to PCB ground plane for optimal thermal performance (θJA = 31°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW0, SW1 | Power switch node | Connects to source of bottom MOSFET; withstands –5V to 65V transient - requires careful layout to minimize ringing in high-dV/dt boost topologies. |
| TG0, TG1 | Top-gate driver output | Drives gate of high-side N-MOSFET; rated –0.3V to 74.8V - enables use of standard logic-level MOSFETs in high-VOUT configurations. |
| BOOST0, BOOST1 | Bootstrap supply | Charges bootstrap capacitor for high-side gate drive; rated –0.3V to 76V - supports >95% duty cycle operation near VIN ≈ VOUT. |
| ISENSE0+, ISENSE0– ISENSE1+, ISENSE1– |
Current sense differential inputs | Accepts 0–100mV differential signals (±1.5% TUE) - enables precision DCR or shunt-based current monitoring per channel. |
| VSENSE0+, VSENSE1+ | Output voltage feedback | High-impedance inputs for resistive divider feedback; ±0.5% VOUT accuracy - eliminates need for external error amplifier in most applications. |
| PGOOD0, PGOOD1 | Power-good open-drain outputs | Assert low when VOUT within ±7.5% of setpoint; 60µs digital filtering - provides reliable sequencing signal for downstream rails. |
| FAULT0, FAULT1 | Fault indicator outputs | Open-drain, 3µs digital filtered - reports OV/UV/OC/OT events independently per channel for rapid system-level fault isolation. |
| SDA, SCL, ALERT | PMBus/I²C interface | 400kHz max, 10pF input capacitance, ±5µA leakage - compatible with standard SMBus controllers and LTpowerPlay GUI. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent boost controllers | Each channel fully programmable (VOUT, fSW, soft-start, current limit) via PMBus or resistors - enables asymmetric rail generation (e.g., 24V + 48V) from single input. |
| Integrated telemetry ADC/DAC | 16-bit VOUT/VIN, 10-bit IIN/IOUT, 0.25°C TSENSE with auto-zeroing - eliminates external monitoring ICs and reduces BOM count in digitally managed power systems. |
| EEPROM with ECC and fault logging | 10,000 write cycles, 10-year data retention at TJ ≤ 125°C, CRC-protected storage - retains critical configuration and fault history across power cycles for field diagnostics. |
| Programmable gate drive voltage | 6.3V–9V per channel (DRVSET pins), adjustable dead time - optimizes trade-off between RDS(on) loss and switching loss for diverse MOSFET selections. |
| PolyPhase® current sharing | Accurate <±1% phase current matching at 50–500kHz with SHARE_CLK synchronization - enables seamless scaling to >50A output using multiple LTC7880s. |
Applications
| Automotive Start-Stop Systems | Industrial High-Voltage Bias Rails |
|---|---|
|
Use Scenario: Maintaining stable 24V/48V auxiliary rails during engine cranking (VIN drops to 2.5V) in 12V/48V dual-battery vehicles. IC Role / Device Role / Timing Role: Dual-channel synchronous boost controller with cold-crank operation, independent soft-start, and PMBus telemetry for battery health monitoring. Use Value: Enables uninterrupted operation of ADAS cameras and radar modules during ignition, with real-time current/voltage telemetry for predictive maintenance. |
Use Scenario: Generating isolated 60V bias for photomultiplier tubes or high-voltage op-amps in test equipment and medical imaging systems. IC Role / Device Role / Timing Role: Precision step-up controller with ±0.5% VOUT accuracy, programmable loop compensation, and overvoltage lockout. Use Value: Replaces discrete boost+linear regulator stacks with single-chip solution, reducing footprint by 40% while maintaining <10mV ripple under dynamic load. |
| Telecom Point-of-Load Conversion | Programmable Lab Power Supplies |
|
Use Scenario: Providing regulated 36V/48V intermediate bus from 12V backplane in modular telecom line cards with hot-swap capability. IC Role / Device Role / Timing Role: Dual-output PMBus-managed controller with event-based sequencing, margining, and fault propagation via FAULT pins. Use Value: Supports remote firmware updates and dynamic voltage scaling via PMBus commands, eliminating need for manual potentiometer adjustments. |
Use Scenario: Building benchtop power supplies with programmable voltage/current limits, ramp rates, and overvoltage protection for R&D validation. IC Role / Device Role / Timing Role: Digital power controller with internal DACs, EEPROM-stored profiles, and USB-I²C adapter compatibility via LTpowerPlay GUI. Use Value: Delivers lab-grade accuracy (±0.5% VOUT, ±1.5% IIN) with zero external calibration, reducing development time for custom PSU designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC7881EUKG#PBF | Same pinout and feature set, but rated for –40°C to 150°C junction temperature (vs. 125°C for LTC7880EUKG#PBF) and includes enhanced thermal shutdown hysteresis. | Required for under-hood automotive applications exceeding 125°C ambient; not drop-in for standard industrial use due to tighter thermal specs. | Select LTC7881EUKG#PBF only when extended temperature qualification is mandatory; otherwise LTC7880EUKG#PBF offers identical functionality at lower cost. |
| TPS546D24RTQR | Single-channel 60V synchronous boost controller with PMBus, no PolyPhase® support, lower integration (no internal EEPROM, 12-bit ADC only). | Suitable for simpler single-rail systems; lacks dual-channel independence, fault logging, and multi-phase scalability of LTC7880EUKG#PBF. | Choose TPS546D24RTQR for cost-sensitive, single-output applications where telemetry depth and phase scalability are not required. |
Compared with LTC7881EUKG#PBF and TPS546D24RTQR, the LTC7880EUKG#PBF uniquely balances dual-channel flexibility, 6-phase PolyPhase® scalability, and full PMBus telemetry with EEPROM-based fault persistence - making it optimal for complex, field-deployable digital power systems requiring long-term reliability and remote diagnostics.
Availability
LTC7880EUKG#PBF is available at Aetrix Electronics and suitable for automotive start-stop systems, industrial high-voltage bias rails, and telecom point-of-load conversion requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for LTC7880EUKG#PBF 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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LTC7880EUKG#PBF belongs to ADI's Power by Linear™ family of digital power management ICs, designed specifically for high-reliability, software-configurable DC/DC conversion in mission-critical embedded systems.
FAQ
What is the maximum output voltage supported by the LTC7880EUKG#PBF?
The LTC7880EUKG#PBF supports up to 60V output per channel: Range 0 (12V–58V) and Range 1 (6V–28V), with ±0.5% total unadjusted error over temperature. This is confirmed in the Electrical Characteristics table (VOUTR0 MAX = 60V) and Absolute Maximum Ratings (VSENSE0+/1+ up to 65V). The LTC7880EUKG#PBF achieves this using high-voltage gate drivers and robust internal charge pump circuitry.
Does the LTC7880EUKG#PBF require external components for basic operation?
Yes - the LTC7880EUKG#PBF requires external MOSFETs, inductors, input/output capacitors, and feedback resistors for each channel. It integrates gate drivers, PWM controllers, ADC/DAC, EEPROM, and PMBus interface, but relies on external power stage components. Typical application schematics show 6.8µH inductors, 3mΩ sense resistors, and 220µF output capacitors for 24V/10A operation.
Can the LTC7880EUKG#PBF operate with input voltage below 5V?
Yes - the LTC7880EUKG#PBF operates down to 2.5V after startup when VBIAS is powered from VOUT, though the specified continuous input range is 5V–40V. This cold-crank capability is explicitly stated in the FEATURES section and validated in Typical Application circuits. Below 5V, VBIAS must be externally supplied or derived from VOUT to maintain regulation.
How does the LTC7880EUKG#PBF handle fault conditions like overvoltage or overtemperature?
The LTC7880EUKG#PBF features dedicated FAULT0/FAULT1 open-drain outputs that assert low within 35µs of OV/UV/OC detection, plus internal overtemperature protection that disables switching above 125°C. Fault events are logged in EEPROM with timestamps, and responses (e.g., latch-off vs. retry) are programmable via PMBus commands like MFR_VOUT_OV_FAULT_RESPONSE.
Is LTpowerPlay software required to configure the LTC7880EUKG#PBF?
No - the LTC7880EUKG#PBF can be configured entirely via external resistors (RCONFIG pins) for voltage, frequency, phase, and address. LTpowerPlay is optional GUI software that leverages the PMBus interface for real-time telemetry, EEPROM programming, and graphical loop compensation tuning - enhancing debug efficiency but not required for basic operation.
LTC7880EUKG#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 52-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Number of Outputs:
- 2
- Output Phases:
- 2
- Voltage - Supply (Vcc/Vdd):
- 5V ~ 40V
- Frequency - Switching:
- 50kHz ~ 500kHz
- Duty Cycle (Max):
- 92%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- I2C, PMBus
- Control Features:
- Current Limit, Enable, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-QFN (7x8)
LTC7880EUKG#PBF FAQ
1.How can I place an order for LTC7880EUKG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC7880EUKG#PBF 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 LTC7880EUKG#PBF reliable?
The price and inventory of LTC7880EUKG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC7880EUKG#PBF is usually 5 days.
3.What payment methods are accepted for LTC7880EUKG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC7880EUKG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC7880EUKG#PBF?
LTC7880EUKG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC7880EUKG#PBF 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 LTC7880EUKG#PBF?
For technical support, including LTC7880EUKG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC7880EUKG#PBF requirements.
6.How does Aetrix verify that LTC7880EUKG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC7880EUKG#PBF 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 LTC7880EUKG#PBF meets industry standards.
7.What is the process for return or replacement of LTC7880EUKG#PBF?
All LTC7880EUKG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC7880EUKG#PBF, 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 LTC7880EUKG#PBF part is unused and in its original packaging.
Return procedure for LTC7880EUKG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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