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Renesas RAA207701GBM#HC0
- Part No.:
- RAA207701GBM#HC0
- Manufacturer:
- Renesas
- Package:
- 30-WFBGA, CSPBGA
- Datasheet:
-
RAA207701GBM#HC0.pdf
- Description:
- IC REG BUCK ADJ 10A 30CSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,951
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Product details
Overview
RAA207701GBM from Renesas Electronics is a monolithic synchronous buck regulator with integrated high- and low-side power MOSFETs in a 30-pin CSP package (2.67 mm × 3.37 mm). It delivers up to 10 A continuous output current, supports 3 V–16 V input, regulates output from 0.8 V to 5 V, and uses Constant-On-Time control for fast transient response-optimized for PC and server point-of-load applications.
For engineers reviewing the RAA207701GBM datasheet, RAA207701GBM pinout, RAA207701GBM application, or RAA207701GBM equivalent, key selection criteria include its 10 A rated output, adjustable 2 MHz switching frequency, remote ON/OFF control, Power Good indicator, and integrated line switch driver for auxiliary power sequencing and discharge functions.
Technical Context
The RAA207701GBM implements a voltage-ripple–based Constant-On-Time (COT) control architecture, where switching cycle initiation depends on output ripple derived from inductor current and capacitor ESR/ESL. Its 1-shot timer sets high-side MOSFET on-time (typ. 210 ns at 12 VIN/1.2 VOUT), while light-load operation switches to diode-emulation mode (ELL) to minimize quiescent current (300 µA typ.) and boost efficiency.
It integrates dual functional blocks: a primary synchronous buck controller with overvoltage (1.00 V FB threshold), overcurrent (14.0 A typ. trip), and thermal shutdown (150 °C) protection; and an independent line switch driver with 25 mA source/sink capability, 300 ns propagation delay, and VIN-referenced LS_OUT output-operable even during regulator shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 10 A continuous - supports high-density CPU/GPU core rail designs without external MOSFETs |
| Input Voltage Range | 3 V to 16 V - compatible with 5 V, 12 V, and wide-range industrial bus supplies |
| Output Voltage Range | 0.8 V to 5 V - programmable via external resistor divider for DDR, ASIC, FPGA, and SoC rails |
| Switching Frequency | Adjustable up to 2 MHz - enables compact magnetics and high-speed load transient response |
| Quiescent Current | 300 µA (typ. at no load) - minimizes standby power loss in always-on system domains |
| Thermal Shutdown | 150 °C trip, 135 °C hysteresis - non-latched recovery ensures automatic restart after cooling |
| Line Switch Driver | 25 mA source/sink, 300 ns propagation - drives discrete MOSFET gates for power sequencing or fast VOUT discharge |
Pinout & Package
CSP 30-pin package, 2.67 mm × 3.37 mm footprint, solder-bump interconnect. Thermal resistance θj-a = 33 °C/W (Renesas reference board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCIN | Controller supply input | +5 V bias for internal logic; must be stable before VIN ramp for proper startup sequence |
| SGND | Analog ground reference | Must be connected to PGND on PCB with low-inductance path to avoid control loop noise |
| FB | Feedback voltage input | Monitors output via resistor divider; internal 0.800 V reference sets regulation accuracy |
| LS_IN / LS_OUT | Line switch control I/O | Independent driver: LS_IN accepts 3.3/5 V logic; LS_OUT sources/sinks 25 mA to drive external MOSFET gate |
| BOOT | Bootstrap supply node | Charged via internal Schottky diode; requires external 0.1 µF/25 V capacitor for high-side gate drive |
| SET | Constant-on-time programming | Tied to SW through resistor (e.g., 30 kΩ) to set on-time and thus switching frequency |
| PGOOD | Open-drain power-good indicator | Pulls low on UVLO/OVP/OCP/TSD; delays 30% of soft-start period before asserting high-Z OK state |
| SS | Soft-start timing capacitor | 2.5 µA internal current charges external cap; start-up time = CSS × 0.8 V / 2.5 µA |
| ON/OFF | Enable/disable control | Active-high logic; <0.6 V disables regulator and line switch; >2.0 V enables both functions |
| VIN / SW / PGND | Power input/switching node/power ground | High-current paths requiring tight layout: VIN/PGND planes, thermal vias under SW pad, minimal SW trace length |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power MOSFETs | Eliminates external high-/low-side FETs and drivers-reducing BOM count and layout area for 10 A POL rails |
| Enhanced Light Load (ELL) Mode | Reduces IC bias current in discontinuous conduction, enabling >85% efficiency at 10 mA load |
| Built-in Bootstrapping Diode | Removes need for external bootstrap diode-simplifies layout and improves reliability in high-frequency operation |
| Adjustable Soft Start | External capacitor sets monotonic output ramp time-prevents inrush current and enables pre-bias safe startup |
| Independent Line Switch Driver | Operates regardless of regulator state-supports sequenced power-up, fast discharge, or VIN UVLO add-on functionality |
Applications
| Server Core Voltage Regulation | AI Accelerator Board Power |
|---|---|
Use Scenario: Regulating 0.8–1.2 V core supply for multi-core Xeon or AMD EPYC processors in 1U rack servers. IC Role / Device Role / Timing Role: Primary synchronous buck controller delivering 10 A with <50 µs load-step response and ±1% output accuracy. Use Value: Integrated MOSFETs and COT control reduce solution size by 35% vs. controller+discrete-FET alternatives while maintaining tight transient performance. | Use Scenario: Providing configurable 1.0–1.8 V rails for GPU memory and tensor cores on PCIe-based AI inference cards. IC Role / Device Role / Timing Role: High-efficiency POL regulator with programmable VOUT, soft-start, and PGOOD signaling for FPGA-configurable power sequencing. Use Value: Adjustable switching frequency up to 2 MHz allows use of sub-1 µH inductors, enabling ultra-low-profile (<1.5 mm) power solutions. |
| Industrial Edge Compute Module | Network Switch ASIC Supply |
Use Scenario: Powering ARM-based edge compute SoCs (e.g., NXP i.MX93, TI Sitara AM62) in fanless DIN-rail enclosures. IC Role / Device Role / Timing Role: Robust 10 A buck converter with thermal shutdown, OVP, and OCP-operating across –40 °C to +85 °C ambient. Use Value: 33 °C/W thermal resistance and copper-filled PGND vias enable full 10 A output without heatsink in convection-cooled designs. | Use Scenario: Generating 1.2 V/3.3 V supplies for multi-gigabit Ethernet switch ASICs with strict sequencing and fast discharge requirements. IC Role / Device Role / Timing Role: Dual-function device: main regulator + line switch driver for controlled VOUT discharge during hot-swap events. Use Value: LS_OUT sink capability discharges 1000 µF output caps in <5 ms-meeting IEEE 802.3af/bt hot-swap safety timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS544B20RTQR | 40 V max VIN, 15 A rating, external MOSFETs required; uses D-CAP3 control instead of COT | Higher VIN range suits 24 V industrial inputs; larger solution size due to discrete FETs and gate drivers | Select when input exceeds 16 V or when design requires field-replaceable FETs |
| ISL9122AIRAJZ-T7A | Same 3–16 V VIN, 10 A rating, but uses adaptive on-time control; smaller 2.5 mm × 3.0 mm WLCSP | Lacks integrated line switch driver; lower thermal resistance (28 °C/W) but no LS_IN/LS_OUT pins | Select when board space is critical and line switch functionality is not needed |
Compared with TPS544B20RTQR and ISL9122AIRAJZ-T7A, the RAA207701GBM uniquely combines 10 A integration, COT transient response, and a dedicated line switch driver in a thermally optimized CSP-making it optimal for space-constrained, multi-rail server and AI hardware where auxiliary power control is essential.
Availability
RAA207701GBM is available at Aetrix Electronics and suitable for server motherboard development, AI accelerator card production, and industrial edge compute module manufacturing requiring stable component supply and long-term lifecycle support.
Supply support for RAA207701GBM 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
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and datacenter markets.
The RAA207700 series belongs to Renesas' high-density power management portfolio, designed specifically for high-current, low-voltage point-of-load regulation in next-generation computing platforms where integration, efficiency, and auxiliary control intelligence are critical.
FAQ
What is the maximum continuous output current supported by the RAA207701GBM?
The RAA207701GBM supports up to 10 A continuous output current under recommended operating conditions (TA ≤ 85 °C, proper PCB thermal design). This rating is confirmed in the datasheet's Recommended Operating Conditions table and reflects the device's optimized thermal resistance (θj-a = 33 °C/W) and low-RDS(on) integrated MOSFETs. Derating applies above 85 °C ambient.
Does the RAA207701GBM require an external bootstrap diode?
No, the RAA207701GBM includes a built-in bootstrapping diode, eliminating the need for an external component. This internal diode charges the BOOT capacitor from the SW node during low-side conduction, simplifying layout and improving reliability-especially at high switching frequencies up to 2 MHz. An external 0.1 µF/25 V ceramic capacitor remains required between BOOT and SW.
How does the line switch driver function in the RAA207701GBM differ from the main regulator operation?
The line switch driver in the RAA207701GBM operates independently of the buck regulator's state: it remains functional even when the ON/OFF pin is low and the regulator is disabled. LS_IN accepts standard 3.3 V/5 V logic, and LS_OUT delivers up to 25 mA source/sink current with 300 ns propagation delay-enabling use cases like power sequencing, fast VOUT discharge, or adding VIN UVLO that do not rely on regulator activity.
What startup sequence must be followed for reliable operation of the RAA207701GBM?
The RAA207701GBM requires VIN to be present before VCIN and ON/OFF rise-specifically, VIN must reach ≥3 V prior to VCIN reaching 4.3 V (its enable threshold). Violating this (e.g., powering VCIN first) prevents startup. The datasheet defines three valid sequences; the most robust is "VIN → VCIN & ON/OFF", ensuring proper bootstrap capacitor charging and gate driver initialization before regulation begins.
Can the RAA207701GBM operate with ceramic output capacitors having very low ESR?
Yes, but external ripple injection is mandatory. Due to its Constant-On-Time architecture, the RAA207701GBM requires ≥15 mV of ripple on the FB pin for loop stability. With low-ESR MLCCs, a dedicated RC network (e.g., 15 kΩ + 0.01 µF + 1000 pF) must be added between SW and FB to synthesize sufficient AC signal-per equations (9)–(12) in the datasheet. Failure to do so risks subharmonic oscillation.
RAA207701GBM#HC0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 30-WFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 10A
- Frequency - Switching:
- Up to 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 30-CSP (2.67x3.37)
RAA207701GBM#HC0 FAQ
1.How can I place an order for RAA207701GBM#HC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA207701GBM#HC0 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 RAA207701GBM#HC0 reliable?
The price and inventory of RAA207701GBM#HC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA207701GBM#HC0 is usually 5 days.
3.What payment methods are accepted for RAA207701GBM#HC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA207701GBM#HC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA207701GBM#HC0?
RAA207701GBM#HC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA207701GBM#HC0 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 RAA207701GBM#HC0?
For technical support, including RAA207701GBM#HC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA207701GBM#HC0 requirements.
6.How does Aetrix verify that RAA207701GBM#HC0 is sourced from the original manufacturer or authorized distributors?
All RAA207701GBM#HC0 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 RAA207701GBM#HC0 meets industry standards.
7.What is the process for return or replacement of RAA207701GBM#HC0?
All RAA207701GBM#HC0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA207701GBM#HC0, 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 RAA207701GBM#HC0 part is unused and in its original packaging.
Return procedure for RAA207701GBM#HC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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