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Renesas RAA230409GFT#AA0
- Part No.:
- RAA230409GFT#AA0
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 32-TQFP Exposed Pad
- Datasheet:
-
RAA230409GFT#AA0.pdf
- Description:
- IC REG QD BUCK/LNR SYNC 32TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,570
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Product details
Overview
RAA230409GFT#AA0 from Renesas Electronics is a 3-channel synchronous step-down switching regulator with integrated power MOSFETs and one LDO channel, designed for multi-rail power management in space-constrained embedded systems. It delivers 500 mA on ch1, 100 mA on ch2 (LDO), and 1500 mA each on ch3 and ch4, with adjustable output voltages via external resistors and 1.3–2 MHz programmable switching frequency.
For engineers reviewing the RAA230409GFT#AA0 datasheet, RAA230409GFT#AA0 pinout, RAA230409GFT#AA0 application, or RAA230409GFT#AA0 equivalent, key selection criteria include independent per-channel ON/OFF control, thermal shutdown (150°C), timer-latch short-circuit protection, low-power mode (SAVE pin), and soft-start timing adjustability via external resistor.
Technical Context
The RAA230409GFT#AA0 integrates four independent regulated outputs: three current-mode synchronous buck converters (ch1, ch3, ch4) and one LDO (ch2). Each buck channel features internal phase compensation, digital soft-start, and discharge circuitry; ch1 includes a dedicated open-drain power-good (PG1) signal. The LDO uses foldback-current limiting and shares analog ground (AGND) and reference voltage (VREF) resources with the switching regulators.
Control logic is centralized but channel-isolated: SHDNB0 enables/disables the entire IC, while SHDNB1–SHDNB4 provide per-channel enable/disable. Output voltage configuration is flexible-ch1, ch3, and ch4 support external resistor feedback (0.8 V reference), and ch4's mode (internal 1.2 V vs. adjustable) is selected via CTL4. Oscillation frequency is set by RT pin resistance (10 kΩ typical = 2 MHz), and soft-start time is configured via SS pin resistance (1000 kΩ typical = 2.0–4.0 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 3 synchronous buck + 1 LDO; ch1: 500 mA, ch2: 100 mA, ch3/ch4: 1500 mA each |
| Switching Frequency | 1.3–2 MHz (programmable via RT pin); supports noise-sensitive and EMI-constrained designs |
| Output Voltage Flexibility | ch1/ch3/ch4: externally adjustable (0.8 V reference); ch4 mode selected by CTL4 pin (L = external, H = 1.2 V internal) |
| Protection Features | Timer-latch thermal shutdown (≥150°C), timer-latch short-circuit protection (SCP pin), UVLO (1.9–2.3 V start), foldback OCP on ch2 |
| Soft-Start & Control | Digital soft-start (adjustable 2–4 ms via SS pin), independent ON/OFF per channel (SHDNB0–SHDNB4), low-power mode (SAVE pin reduces fSW to 15%) |
| Accuracy & Stability | VOUT accuracy: ±2% (buck), ±1% (LDO); VREF = 1.00 V ±2%; internal compensation eliminates external compensation components |
Pinout & Package
RAA230409GFT#AA0 is housed in a 32-pin TQFP package (7 mm × 7 mm, 0.8 mm pitch) with exposed thermal pad. Pin assignment follows standard Renesas power management layout: VPINx pins supply input power per channel; LOUTx pins connect to inductors; IIx pins serve as error amplifier inverted inputs for feedback; SHDNBx pins control channel enable; PG1 provides ch1 power-good status; SCP enables shared short-circuit/thermal protection latching.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VPIN1–VPIN4 | Power input for ch1–ch4 | Accept 2.5–5.5 V input; ch2 (LDO) requires ≥0.5 V headroom over VOUT |
| LOUT1, LOUT3, LOUT4 | Buck inductor connection | High-current switched node; must route with low-inductance, high-current PCB traces |
| OUT2 | LDO output | Low-noise, fixed or adjustable rail; requires ≥2.2 µF ceramic output capacitor |
| II1–II4 | Error amplifier inverting input | Connect to feedback divider; 0.8 V threshold enables precise external VOUT setting |
| SHDNB0–SHDNB4 | Enable/disable control | Active-high; internal 400 kΩ pull-down; level must exceed 1.4 V to assert |
| CTL4 | ch4 output mode select | Low = external resistor feedback; High = internal 1.2 V preset |
| SCP | Short-circuit/thermal latch capacitor | 0.1 µF capacitor sets delay time (~0.09 s); connects to AGND if protection unused |
| PG1 | ch1 power-good indicator | Open-drain; asserts HiZ when ch1 output reaches ≥90% of target; must tie to ch1 output |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck architecture | Integrated high-side/low-side MOSFETs eliminate external FETs and reduce BOM count and board area |
| Per-channel independent control | Four SHDNB pins + global SHDNB0 allow sequenced startup, dynamic rail disabling, and fault isolation |
| Programmable soft-start | Adjustable 2–4 ms ramp via SS pin resistor prevents inrush current and stabilizes sequencing |
| Shared protection latching | Single SCP pin coordinates timer-latch response across all channels for coordinated fault recovery |
| Low-power operating mode | SAVE pin reduces switching frequency to 15% of nominal, cutting quiescent current to 0.7–1.0 mA |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Powering isolated sensor interfaces, CAN transceivers, and microcontroller peripherals requiring tightly regulated 3.3 V, 2.5 V, and 1.2 V rails. IC Role / Device Role / Timing Role: Multi-rail PMIC delivering sequenced, independently controlled outputs with thermal and short-circuit protection. Use Value: Eliminates discrete DC/DC + LDO combinations; reduces component count by >60% and improves system-level reliability under load transients. | Use Scenario: Supplying MCU core (1.2 V), I/O (3.3 V), CAN PHY (3.3 V), and LIN interface (5 V derived from ch2 LDO) in compact body electronics modules. IC Role / Device Role / Timing Role: Primary power management IC enabling rail sequencing, low-quiescent operation, and fail-safe shutdown during battery brownout. Use Value: Meets automotive cold-crank (2.5 V min AVDD) and thermal derating requirements; SAVE mode extends battery life in sleep states. |
| Medical Point-of-Care Monitor | Network Edge Router SFP+ Module |
Use Scenario: Generating clean, low-noise bias for analog front-end (AFE) circuits, ADC references, and display backlight drivers in portable diagnostics equipment. IC Role / Device Role / Timing Role: Mixed-signal power source combining low-ripple LDO (ch2) with efficient, low-EMI buck converters (ch1/ch3/ch4). Use Value: VREF (1.00 V ±2%) and internal compensation ensure stable AFE performance without external tuning; PG1 enables safe system boot verification. | Use Scenario: Providing 1.2 V core, 3.3 V auxiliary, and 1.8 V SerDes rails for SFP+ optical transceiver modules with strict thermal and transient response constraints. IC Role / Device Role / Timing Role: High-current, thermally robust power solution supporting rapid load steps (1500 mA in <100 µs) and continuous 85°C ambient operation. Use Value: 1500 mA per buck channel and 150°C thermal shutdown enable reliable operation in dense, fanless enclosures; SCP latching prevents cascading failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-output PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65218D0RSLR | 4-buck + 2-LDO; fixed 1.8/3.3 V outputs; no external VOUT adjustment; 2.2 MHz fixed fSW | Best for cost-sensitive, fixed-rail industrial HMIs where flexibility is secondary to integration density | Select if design uses only standard voltages and requires smaller footprint (32-pin QFN vs. TQFP) |
| ISL9305IRTNZ-T | 3-buck + 1-LDO; supports external VOUT on all channels; 2.5 MHz max fSW; no shared SCP latch | Suitable for portable devices needing ultra-low IQ (<1 µA shutdown) and higher-frequency operation | Choose when lowest standby current and faster transient response outweigh need for coordinated fault latching |
Compared with TPS65218D0RSLR and ISL9305IRTNZ-T, RAA230409GFT#AA0 uniquely combines full external VOUT adjustability across three buck channels, shared timer-latch protection, and configurable low-power mode-making it optimal for custom-rail, thermally demanding embedded systems requiring field-upgradable voltage configurations.
Availability
RAA230409GFT#AA0 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, medical point-of-care monitors, and network edge router SFP+ modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for RAA230409GFT#AA0 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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications, with deep expertise in power management and mixed-signal integration.
The RAA23040x product line was developed to address the demand for highly integrated, configurable, and thermally robust multi-rail power management in space-constrained embedded systems-emphasizing design flexibility, protection coordination, and long-term manufacturability.
FAQ
What is the maximum output current capability of each channel in RAA230409GFT#AA0?
RAA230409GFT#AA0 delivers up to 500 mA on ch1 (buck), 100 mA on ch2 (LDO), and 1500 mA each on ch3 and ch4 (buck). These values are validated under thermal limits (TJ ≤ 125°C) with recommended PCB layout and 5 V input. Ch2's 100 mA rating assumes ≤0.5 V dropout; higher loads trigger foldback current limiting.
How does the CTL4 pin affect the operation of RAA230409GFT#AA0?
The CTL4 pin selects ch4's output voltage configuration: logic low (≤0.8 V) enables external resistor feedback for adjustable output (0.8 V × (1 + R1/R2)), while logic high (≥1.4 V) selects the internal 1.2 V preset. This dual-mode capability allows RAA230409GFT#AA0 to support both fixed and programmable designs without hardware change.
Can RAA230409GFT#AA0 operate with input voltage below 2.5 V?
No-RAA230409GFT#AA0 requires AVDD ≥ 2.5 V per the Recommended Operating Conditions. Below this, the under-voltage lockout (UVLO) circuit disables all outputs. The minimum AVDD start threshold is 1.9–2.3 V, but stable operation is only guaranteed above 2.5 V, especially for ch2 which needs ≥0.5 V headroom over its output.
What is the purpose of the SCP pin in RAA230409GFT#AA0, and how should it be configured?
The SCP pin enables shared timer-latch protection for short-circuit and thermal faults across all channels. A 0.1 µF capacitor between SCP and AGND sets ~90 ms delay before latching all outputs OFF. If protection is not required, connect SCP directly to AGND-but note that thermal shutdown will then be disabled, increasing risk of permanent damage under overload.
Does RAA230409GFT#AA0 support power sequencing between its four output channels?
Yes-RAA230409GFT#AA0 supports precise power sequencing via independent SHDNB1–SHDNB4 pins and soft-start timing. By controlling the assertion order and timing of these enable signals (with typical tSS = 2–4 ms), designers can implement custom startup sequences-for example, powering ch2 (LDO) first to stabilize analog references before enabling ch1–ch4 buck regulators.
RAA230409GFT#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-TQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) Synchronous (3), Linear (LDO) (1)
- Number of Outputs:
- 4
- Frequency - Switching:
- 1.3MHz ~ 2.2MHz
- Voltage/Current - Output 1:
- 0.9V ~ 4.95V, 500mA
- Voltage/Current - Output 2:
- 0.9V ~ 4.95V, 100mA
- Voltage/Current - Output 3:
- 0.9V ~ 4.95V, 1.5A
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFP (7x7)
RAA230409GFT#AA0 FAQ
1.How can I place an order for RAA230409GFT#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA230409GFT#AA0 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 RAA230409GFT#AA0 reliable?
The price and inventory of RAA230409GFT#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA230409GFT#AA0 is usually 5 days.
3.What payment methods are accepted for RAA230409GFT#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA230409GFT#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA230409GFT#AA0?
RAA230409GFT#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA230409GFT#AA0 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 RAA230409GFT#AA0?
For technical support, including RAA230409GFT#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA230409GFT#AA0 requirements.
6.How does Aetrix verify that RAA230409GFT#AA0 is sourced from the original manufacturer or authorized distributors?
All RAA230409GFT#AA0 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 RAA230409GFT#AA0 meets industry standards.
7.What is the process for return or replacement of RAA230409GFT#AA0?
All RAA230409GFT#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA230409GFT#AA0, 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 RAA230409GFT#AA0 part is unused and in its original packaging.
Return procedure for RAA230409GFT#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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