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Analog Devices Inc. LT7200SAV#PBF
- Part No.:
- LT7200SAV#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 48-PowerTFQFN
- Datasheet:
-
LT7200SAV#PBF.pdf
- Description:
- IC REG BUCK ADJ QUAD 48LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:177
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Product details
Overview
LT7200SAV#PBF from Analog Devices is a quad-channel monolithic synchronous buck regulator with Silent Switcher®2 architecture, delivering ±5A per channel (±20A total) across 0.5V–0.9×VIN output range. It operates from 2.9V–18V SVIN and 1.5V–18V PVIN inputs, supports programmable 400kHz–3MHz switching frequency, and features individual tracking, soft-start, and power-good outputs for FPGA/ASIC point-of-load applications.
For engineers reviewing the LT7200SAV#PBF datasheet, LT7200SAV#PBF pinout, LT7200SAV#PBF application, or LT7200SAV#PBF equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive-grade AEC-Q100 qualification, and real-world multi-phase layout advantages including reduced input/output capacitance requirements via PHMODE-controlled phase staggering.
Technical Context
The LT7200SAV#PBF implements a constant-frequency, current-mode control architecture with phase-lockable on-time regulation-enabling stable 12ns minimum on-time operation at 12V-to-1V conversion in 2MHz mode. Its four independent channels share a single oscillator but support out-of-phase timing via PHMODE pin selection (90° for 4-phase, 120° for 3-phase), reducing input ripple and capacitor stress.
Each channel integrates top/bottom NMOS switches (37mΩ/12mΩ RDS(ON)), internal 5V INTVCC regulator, and dedicated ITH compensation nodes enabling flexible internal or external loop tuning. MODE/SYNC pin selects Discontinuous Mode (DCM) for light-load efficiency or Forced Continuous Mode (FCM) for low-noise operation, with external clock synchronization capability within ±30% of programmed frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | ±5A per channel (±20A total); enables high-density multi-rail power delivery to ASICs/FPGAs without external current sharing. |
| Input Voltage Range | SVIN: 2.9V–18V; PVIN: 1.5V–18V; supports direct connection to 3.3V, 5V, and 12V system rails. |
| Output Voltage Range | 0.5V–0.9×VIN; allows precise sub-1V core supply generation with 0.5V ±0.8% reference accuracy over –40°C to 125°C. |
| Switching Frequency | 400kHz–3MHz (RRT-programmable); enables use of compact 0.6µH inductors and ceramic capacitors in space-constrained designs. |
| Efficiency | Up to 96%; achieved via low RDS(ON) integrated FETs and optimized gate drive, minimizing conduction and switching losses. |
| EMI Performance | Ultralow radiated emissions via Silent Switcher®2 architecture with internal bypass capacitors and PCB layout insensitivity. |
| Thermal Rating | Rated for –40°C to 125°C junction temperature; qualified to AEC-Q100 Grade 1 for automotive under-hood applications. |
Pinout & Package
LT7200SAV#PBF uses a low-profile 5mm × 6mm 48-lead LQFN package with exposed thermal pad for enhanced thermal performance in high-power density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PHMODE | Phase configuration control | Selects 4-phase (GND tie) or 3-phase (INTVCC tie) operation to reduce input/output capacitor requirements. |
| PVIN1–PVIN4 | Per-channel power input | Independent high-side MOSFET supply pins; allow separate input rail sourcing per channel for noise isolation. |
| SW1–SW4 | Per-channel switch node | Connects to external inductor; voltage swing spans ground to PVINx; requires tight layout for EMI control. |
| FB1–FB4 | Per-channel feedback input | Regulates to 0.5V reference; enables resistor-divider programming of VOUT = 0.5V × (1 + R2/R1). |
| TRACK1–TRACK4 | Per-channel soft-start/tracking | Controls output rise time; internal 5µA pull-up enables capacitor-based soft-start or external voltage tracking. |
| PGOOD1–PGOOD4 | Per-channel power-good indicator | Open-drain output pulled low if FBx deviates >±7.5% from 0.5V; supports sequenced system startup. |
| RUN1–RUN4 | Per-channel enable input | Logic-high active; 1.2V threshold with 100mV hysteresis ensures robust start-up sequencing. |
| MODE/SYNC | Mode selection & sync input | DCM (GND), FCM (floating or >1V), or external clock sync (±30% capture range). |
| RT | Oscillator frequency set | Resistor-to-GND (33.2kΩ–249kΩ) programs 400kHz–3MHz; enables precise EMI frequency placement. |
| ITH1–ITH4 | Per-channel compensation node | Current-mode error amplifier output; sets valley current limit linearly with voltage (0.3V–1.6V range). |
| INTVCC | Internal 5V regulator output | Powers internal logic and gate drivers; requires ≥4.7µF ceramic decoupling to GND. |
| SVIN | Signal input supply | Filtered input to internal 5V regulator; bypassed with 1µF ceramic capacitor for low-noise biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Switcher®2 Architecture | Integrated bypass capacitors and symmetrical layout reduce radiated EMI by >30dB vs prior-gen buck regulators, eliminating need for shielding cans. |
| Multi-phase Phase Staggering | PHMODE-selectable 90° (4-phase) or 120° (3-phase) timing reduces peak input current by up to 50%, allowing smaller bulk capacitors. |
| Individual Channel Control | Separate RUN, TRACK, PGOOD, and FB pins per channel enable independent sequencing, voltage ramping, fault reporting, and output adjustment. |
| Flexible Compensation | Internal ITH compensation simplifies design; external compensation option supports fast transient response for CPU/GPU dynamic loads. |
| AEC-Q100 Automotive Qualification | Qualified to Grade 1 (–40°C to +125°C), supporting under-hood ADAS domain controllers and infotainment power supplies. |
Applications
| Server Point-of-Load Supply | FPGA Core & I/O Power |
|---|---|
Use Scenario: Delivering tightly regulated 0.85V/12A and 1.2V/8A rails to dual-core server CPUs with dynamic load steps up to 10A/µs. IC Role / Device Role / Timing Role: Quad-channel buck controller providing independent, synchronized, and phase-staggered regulation with <12ns on-time capability for 12V-to-0.85V conversion at 2MHz. Use Value: Eliminates need for multiple discrete regulators; 4-phase operation cuts input ripple current by 75%, reducing bulk capacitor count by 2×. | Use Scenario: Powering Xilinx Versal ACAP with 0.75V core, 0.9V memory, 1.8V I/O, and 3.3V auxiliary rails from a common 12V backplane. IC Role / Device Role / Timing Role: Single-package quad-buck solution with per-rail tracking, soft-start, and power-good signaling for safe FPGA configuration sequence. Use Value: Reduces BOM count by 4× vs discrete solutions; individual TRACK pins enable controlled voltage ramping to meet FPGA VCCINT/VCCAUX sequencing requirements. |
| Automotive ADAS Domain Controller | High-Density Telecom Board |
Use Scenario: Generating 1.0V/6A, 1.8V/4A, 3.3V/3A, and 5.0V/2A rails for NVIDIA Orin-based autonomous driving compute modules in vehicle cabin. IC Role / Device Role / Timing Role: AEC-Q100 qualified quad buck regulator with integrated EMI suppression, supporting ISO 11452-2/4 compliance without added filtering. Use Value: Meets automotive EMI limits at full load without ferrite beads or metal shields; 125°C rating enables placement near SoC heat sources. | Use Scenario: Replacing legacy multi-chip PMICs on 5G baseband cards requiring 0.6V/10A, 1.1V/8A, 1.8V/5A, and 3.3V/4A with minimal board area. IC Role / Device Role / Timing Role: High-efficiency quad buck with 96% peak efficiency and 5mm × 6mm footprint, enabling 40% smaller power stage vs discrete alternatives. Use Value: Cuts thermal footprint by 35% via low RDS(ON) FETs and exposed-pad LQFN; supports 2MHz operation to shrink magnetics volume by 60%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3310S | Single-channel 10A monolithic buck; no multi-phase capability; 2.25V–5.5V VIN range; lacks PHMODE and per-channel PGOOD. | Suitable only for single-rail systems; cannot replace LT7200SAV#PBF's quad-channel functionality without four devices. | Select LTC3310S only when designing single-output, low-input-voltage (≤5.5V) applications where channel integration is not required. |
| MP8859 from Monolithic Power Systems | Quad-channel 4A/channel buck; 2.7V–16V VIN; no AEC-Q100 qualification; no integrated Silent Switcher EMI reduction; 15ns min on-time. | Acceptable for industrial non-automotive use; lacks automotive qualification and EMI performance needed for safety-critical ADAS systems. | Choose MP8859 for cost-sensitive telecom or computing applications where AEC-Q100 and ultralow EMI are not mandatory. |
Compared with LTC3310S and MP8859, the LT7200SAV#PBF uniquely combines quad-channel ±5A capability, AEC-Q100 qualification, Silent Switcher®2 EMI suppression, and 4-phase phase staggering-making it the only option for space-constrained, high-reliability automotive and server point-of-load designs requiring simultaneous multi-rail regulation.
Availability
LT7200SAV#PBF is available at Aetrix Electronics and suitable for server power distribution, FPGA point-of-load supply, and automotive ADAS domain controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LT7200SAV#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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The LT7200S product line delivers high-efficiency, low-EMI, multi-phase monolithic buck regulators specifically engineered for demanding point-of-load applications in servers, automotive ADAS, and high-end computing systems.
FAQ
What is the maximum output current per channel for the LT7200SAV#PBF?
The LT7200SAV#PBF delivers ±5A per channel, supporting a total of ±20A across all four channels. Each channel's positive and negative current capability is independently rated at 5A and –6.8A respectively (minimum negative valley current limit), enabling bidirectional energy handling in advanced power architectures. This specification is validated across –40°C to 125°C junction temperature with appropriate thermal management.
Does the LT7200SAV#PBF support automotive qualification?
Yes, the LT7200SAV#PBF is AEC-Q100 qualified for automotive applications (Grade 1, –40°C to +125°C). This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD-ensuring reliability in under-hood ADAS domain controllers and infotainment systems. The LT7200SAV#PBF datasheet Rev. 2 (November 2024) explicitly confirms this qualification in the Features section.
How does the PHMODE pin affect LT7200SAV#PBF operation?
The PHMODE pin configures inter-channel phase relationship: tying PHMODE to GND enables 4-phase (90° staggered) operation, while connecting it to INTVCC selects 3-phase (120° staggered) mode. This reduces input and output capacitor RMS current-cutting required capacitance by up to 50% versus single-phase operation. The LT7200SAV#PBF's PHMODE function is detailed in Table 3 (Pin Descriptions) and Figure 3 of the official datasheet.
Can the LT7200SAV#PBF operate with a 12V input to generate a 1V output?
Yes, the LT7200SAV#PBF supports true 12V-to-1V conversion at 2MHz using its 12ns minimum on-time capability. This is enabled by the "phase lockable, controlled on-time, constant frequency" architecture described in the Theory of Operation section. The datasheet confirms 12ns tON(MIN) (Table 1) and demonstrates 12V-to-1V operation in typical application figures.
What is the purpose of the MODE/SYNC pin on the LT7200SAV#PBF?
The MODE/SYNC pin serves three functions: (1) selecting Discontinuous Mode (DCM) when tied to GND for light-load efficiency, (2) enabling Forced Continuous Mode (FCM) when floating or pulled above 1V for low-noise operation, and (3) synchronizing switching frequency to an external clock within ±30% of the programmed frequency. This dual-role pin is documented in Table 3 and the MODE/SYNC Operation section of the LT7200SAV#PBF datasheet.
LT7200SAV#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Silent Switcher®2
- Package/Case:
- 48-PowerTFQFN
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 4
- Voltage - Input (Min):
- 18V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 16.2V
- Current - Output:
- 5A, 5A, 5A, 5A
- Frequency - Switching:
- 400kHz ~ 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFN (5x6)
LT7200SAV#PBF FAQ
1.How can I place an order for LT7200SAV#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT7200SAV#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 LT7200SAV#PBF reliable?
The price and inventory of LT7200SAV#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT7200SAV#PBF is usually 5 days.
3.What payment methods are accepted for LT7200SAV#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT7200SAV#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT7200SAV#PBF?
LT7200SAV#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT7200SAV#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 LT7200SAV#PBF?
For technical support, including LT7200SAV#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT7200SAV#PBF requirements.
6.How does Aetrix verify that LT7200SAV#PBF is sourced from the original manufacturer or authorized distributors?
All LT7200SAV#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 LT7200SAV#PBF meets industry standards.
7.What is the process for return or replacement of LT7200SAV#PBF?
All LT7200SAV#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT7200SAV#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 LT7200SAV#PBF part is unused and in its original packaging.
Return procedure for LT7200SAV#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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