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Analog Devices Inc. LTC7130IY#PBF
- Part No.:
- LTC7130IY#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 63-FBGA
- Datasheet:
-
LTC7130IY#PBF.pdf
- Description:
- IC REG BUCK ADJ 20A 63BGA
- Quantity:
- Payment:
- Shipping:
Inventory:219
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Product details
Overview
LTC7130IY#PBF from Analog Devices is a monolithic synchronous step-down DC/DC converter delivering up to 20A continuous output current with ultralow-DCR inductor sensing, ±0.5% output voltage regulation accuracy at 0.6V reference, and programmable current limit from 10mV to 30mV. It operates across 4.5V–20V input and supports 0.6V–3.5V output, targeting high-density power rails for FPGAs and telecom processors.
For engineers reviewing the LTC7130IY#PBF datasheet, LTC7130IY#PBF pinout, LTC7130IY#PBF application, or LTC7130IY#PBF equivalent, key selection considerations include its differential remote sense amplifier, DCR temperature compensation, 250kHz–770kHz programmable switching frequency, and 63-pin 6.25mm × 7.5mm BGA package with SnPb/RoHS-compliant finish.
Technical Context
The LTC7130IY#PBF implements Analog Devices' proprietary current-mode architecture with dual-sense inputs (SNSD+, SNSA+) to enhance signal-to-noise ratio for sub-1mΩ DCR inductors, reducing switching jitter and enabling high-efficiency operation at light loads. Its error amplifier drives the ITH pin to control peak inductor current, while the VFB pin compares feedback against a precision 0.6V reference.
It integrates a high-speed differential remote sense amplifier (gain = 1.0 V/V, ±0.3% gain error), programmable ILIM threshold (10–30mV in 5mV steps), and temperature-compensated current limiting via ITEMP pin connected to an NTC thermistor near the output inductor. The MODE/PLLIN pin selects Burst Mode®, pulse-skipping, or forced CCM operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 20V - supports wide-range bus voltages including 5V, 12V, and 20V systems without external regulators. |
| Output Current | Up to 20A continuous - enables single-chip solutions for high-power FPGA, ASIC, and DSP core rails. |
| Output Voltage Accuracy | ±0.5% over –40°C to 125°C - ensures stable core voltage under thermal stress and load transients. |
| Switching Frequency | 250kHz to 770kHz, programmable via FREQ pin - allows optimization of size vs. efficiency and EMI performance. |
| Current Sense Threshold | 10mV to 30mV, set by ILIM voltage - enables precise, temperature-compensated overcurrent protection with low-DCR inductors. |
| Package | 63-pin BGA, 6.25mm × 7.5mm × 2.22mm - compact footprint for high-density PCB layouts with thermal vias to SGND/GND planes. |
| Operating Junction Temp | –40°C to 125°C - qualified for industrial and telecom environments with full performance guarantee. |
Pinout & Package
Package: 63-ball BGA (6.25mm × 7.5mm × 2.22mm), RoHS-compliant SAC305 finish, MSL Level 3, –40°C to 125°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (E4–E7, F4–F7, G7) | Main power input supply | Connects directly to internal high-side and low-side NMOS drains; requires local ceramic decoupling to PGND. |
| SW (G1–G3, H1–H3, J1–J3) | Switch node | Drives external inductor; swings from ~–0.3V (Schottky drop) to VIN; critical for layout EMI and thermal management. |
| INTVCC (D1) | Internal 5.5V regulator output | Powers gate drivers and control logic; must be decoupled with ≥4.7µF low-ESR capacitor to PGND. |
| FREQ (B7) | Oscillator frequency programming | 10µA current source; resistor to GND sets nominal frequency (250–770kHz); voltage drive also supported. |
| ILIM (C2) | Current limit threshold control | DC voltage input (0V to INTVCC) sets max sense threshold from 10mV to 30mV in 5mV steps. |
| DIFFP / DIFFN (A3 / A2) | Differential remote sense inputs | Connect directly to load side of output rail; enable accurate regulation despite PCB IR drop. |
| ITEMP (D6) | DCR temperature compensation | Accepts NTC thermistor voltage to dynamically scale current limit vs. inductor DCR drift over temperature. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-DCR current sensing | Dual-path (SNSD+/SNSA+) architecture improves SNR by 14dB, enabling use of ≤0.37mΩ inductors without added noise sensitivity. |
| Differential remote sense amplifier | Gain = 1.0 V/V (±0.3%), PSRR = 90dB - rejects common-mode noise and compensates for PCB trace resistance up to 20mΩ. |
| Programmable soft-start & tracking | 1.25µA TK/SS pull-up current enables linear ramp start-up or precise voltage tracking with external supplies. |
| DCR temperature compensation | ITEMP pin interface with NTC thermistor ensures current limit remains accurate across –40°C to 125°C ambient. |
| Three light-load modes | Burst Mode® (floating MODE/PLLIN), pulse-skipping (tied to INTVCC), or forced CCM (tied to SGND) - selectable per system efficiency requirements. |
Applications
| FPGA Core Power Supply | Telecom Datacom Board |
|---|---|
|
Use Scenario: Providing 1.5V/20A core voltage to Xilinx Kintex or Intel Stratix FPGA with tight transient response and <±1% regulation. IC Role / Device Role / Timing Role: Primary buck controller with differential remote sensing and DCR-based current monitoring. Use Value: Eliminates need for external current-sense resistors, reduces board area by 30%, and maintains ±0.5% output accuracy across temperature. |
Use Scenario: Generating 1.2V/18A processor rail in 1RU telecom switch with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: High-efficiency, high-current step-down regulator with programmable frequency and EXTVCC support. Use Value: EXTVCC input reduces power dissipation by 40% vs. internal LDO; 770kHz max frequency enables smaller magnetics. |
| Distributed Power System | Industrial Embedded Controller |
|
Use Scenario: Local point-of-load conversion in modular server backplane where multiple LTC7130IY#PBF units operate in parallel. IC Role / Device Role / Timing Role: Synchronous buck converter with master-slave current sharing enabled via ILIM and ITEMP coordination. Use Value: Parallel operation achieves >40A total with <±3% current mismatch; eliminates external current-sharing ICs. |
Use Scenario: Powering ARM Cortex-A72 SoC in ruggedized factory automation controller requiring -40°C startup and long-term reliability. IC Role / Device Role / Timing Role: Industrial-grade DC/DC controller with guaranteed 125°C junction operation and robust UV/OV fault reporting. Use Value: PGOOD, fault indicator, and undervoltage lockout (3.4V–4.1V) ensure safe boot and graceful shutdown under brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPM3695-25 from Monolithic Power Systems | 18A rated, integrated inductor, fixed 500kHz frequency, no differential remote sense, ±1% output accuracy. | Suitable for space-constrained designs where board area > efficiency; lacks DCR temp compensation and programmable ILIM. | Select when simplified layout and faster time-to-market outweigh need for ultra-precise current limiting and thermal compensation. |
| TPS546D24A from Texas Instruments | 25A rated, PMBus interface, 0.5% output accuracy, supports AVS, but requires external current-sense resistor and has larger QFN package. | Preferred for digitally controlled systems needing telemetry, margining, and dynamic voltage scaling. | Choose when digital monitoring, adaptive voltage scaling, or multi-rail coordination via PMBus are required. |
Compared with MPM3695-25 and TPS546D24A, the LTC7130IY#PBF uniquely combines ultralow-DCR sensing, integrated differential remote sense, and analog-programmable current limit in a compact BGA-making it optimal for analog-controlled, thermally demanding, high-precision power rails where resistor-free sensing and temperature-aware protection are critical.
Availability
LTC7130IY#PBF is available at Aetrix Electronics and suitable for FPGA core power, telecom datacom boards, and distributed power systems requiring stable component supply, extended temperature operation, and long-term production continuity.
Supply support for LTC7130IY#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 is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving industrial, automotive, communications, and computing markets.
The LTC7130IY#PBF belongs to Analog Devices' Power by Linear™ monolithic DC/DC converter family, engineered specifically for high-current, high-efficiency point-of-load applications demanding precision regulation, thermal resilience, and minimal external components.
FAQ
What is the maximum continuous output current of the LTC7130IY#PBF?
The LTC7130IY#PBF delivers up to 20A continuous output current under specified thermal conditions (e.g., 200LFM airflow, DC2341A demo board). Actual achievable current depends on ambient temperature, PCB copper area, and airflow; thermal derating curves in the datasheet define limits at 0LFM, 200LFM, and 400LFM for VIN = 5V/12V/20V. The LTC7130IY#PBF maintains this rating across its full –40°C to 125°C junction temperature range.
How does the LTC7130IY#PBF achieve ultralow-DCR current sensing?
The LTC7130IY#PBF uses two dedicated sense inputs-SNSD+ for DC current and SNSA+ for AC ripple-to reconstruct a high-SNR current signal from inductor DCR as low as 0.37mΩ. Internal signal processing provides 14dB SNR improvement versus conventional methods, eliminating switching jitter and enabling efficient operation without discrete sense resistors. This architecture is intrinsic to the LTC7130IY#PBF and requires matching RC filter time constants per the datasheet.
Can the LTC7130IY#PBF operate with a 5V input supply?
Yes, the LTC7130IY#PBF supports 4.5V–20V input. When VIN is between 4.5V and 5.5V, the SVIN pin must be tied to INTVCC to ensure proper internal regulator operation. This configuration is explicitly validated in the datasheet (Note 3) and used in typical 5V-input applications. The LTC7130IY#PBF maintains full functionality-including current limit programming and remote sensing-at 5V input.
What is the purpose of the ITEMP pin on the LTC7130IY#PBF?
The ITEMP pin on the LTC7130IY#PBF accepts a voltage from an NTC thermistor placed near the output inductor to compensate for DCR drift over temperature. This enables precise, temperature-invariant current limiting: as inductor DCR increases with heat, the LTC7130IY#PBF automatically scales down the effective current sense threshold to maintain consistent trip points. Leaving ITEMP floating disables this feature.
Does the LTC7130IY#PBF support parallel operation for higher current?
Yes, the LTC7130IY#PBF supports high-current parallel operation through synchronized switching and coordinated current limiting. By connecting MODE/PLLIN pins together and using matched ILIM and ITEMP networks, multiple LTC7130IY#PBF units can share load current with <±3% mismatch. The datasheet confirms this capability under "High Current Parallel Operation" in the FEATURES section and provides layout guidelines for interleaving and thermal balance.
LTC7130IY#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 63-FBGA
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 20A
- Frequency - Switching:
- 250kHz ~ 770kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 63-BGA (7.5x6.25)
LTC7130IY#PBF FAQ
1.How can I place an order for LTC7130IY#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC7130IY#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 LTC7130IY#PBF reliable?
The price and inventory of LTC7130IY#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC7130IY#PBF is usually 5 days.
3.What payment methods are accepted for LTC7130IY#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC7130IY#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC7130IY#PBF?
LTC7130IY#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC7130IY#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 LTC7130IY#PBF?
For technical support, including LTC7130IY#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC7130IY#PBF requirements.
6.How does Aetrix verify that LTC7130IY#PBF is sourced from the original manufacturer or authorized distributors?
All LTC7130IY#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 LTC7130IY#PBF meets industry standards.
7.What is the process for return or replacement of LTC7130IY#PBF?
All LTC7130IY#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC7130IY#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 LTC7130IY#PBF part is unused and in its original packaging.
Return procedure for LTC7130IY#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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