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Renesas RAA230233GSB#HA0
- Part No.:
- RAA230233GSB#HA0
- Manufacturer:
- Renesas
- Package:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
RAA230233GSB#HA0.pdf
- Description:
- IC REG BUCK ADJ 3A DL 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,807
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Product details
Overview
RAA230233GSB#HA0 from Renesas Electronics is a dual synchronous step-down DC/DC converter IC supporting 4.5V–16V input, 0.8V–6.0V adjustable dual-channel output (CH1 & CH2), 3A per channel, 1.1MHz fixed switching frequency, and integrated power MOSFETs. It delivers high-efficiency power conversion for multi-rail embedded systems requiring independent voltage regulation - such as industrial controllers and smart metering platforms.
For engineers reviewing the RAA230233GSB#HA0 datasheet, RAA230233GSB#HA0 pinout, RAA230233GSB#HA0 application, or RAA230233GSB#HA0 equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters, real-world application mappings, and two rigorously cross-checked alternative parts for design-in flexibility.
Technical Context
The RAA230233GSB#HA0 implements two independent current-mode PWM controllers with auto PFM mode selection via the x_AutoPFM pin, enabling seamless transition between pulse-frequency modulation (light load) and fixed-frequency PWM (heavy load). Each channel integrates high-side and low-side N-channel MOSFETs with 180mΩ and 130mΩ typical on-resistance respectively.
It features internal phase compensation, fixed 2ms soft-start, open-drain PGOOD monitoring, and dedicated discharge circuits per output that actively sink current when EN is deasserted. Protection includes latch-type short-circuit detection (triggered at FB < 0.35V), thermal shutdown at 165°C (auto-recovery), and UVLO with 3.9V turn-on / 3.7V turn-off thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 16V - supports wide-input industrial and telecom power rails without external pre-regulation. |
| Output Voltage Range | 0.8V to 6.0V per channel - adjustable via external resistor divider; enables precise core I/O rail generation. |
| Max Output Current | 3A per channel - sufficient for powering FPGA I/O banks, microcontroller cores, or sensor subsystems. |
| Switching Frequency | 1.1MHz fixed - allows compact external LC filter design with standard 2.2–4.7µH inductors. |
| Shutdown Current | 1µA typical - ensures ultra-low system standby power in battery-backed or energy-harvesting applications. |
| Soft Start Time | 2ms typical - limits inrush current and prevents output overshoot during power-up sequencing. |
| Thermal Shutdown | 165°C detect temperature - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
RAA230233GSB#HA0 is housed in a 20-pin HTSSOP package (Renesas code PTSP0020JF-A) with exposed thermal pad connected to PGND. The package supports high-power dissipation in compact industrial layouts and requires 4-layer board routing with dedicated ground planes for noise-sensitive analog sections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND1, PGND2 | Power Ground (CH1 & CH2) | Separate high-current return paths minimize coupling between channels; must be tied to exposed pad. |
| LX1, LX2 | Switch Node Output | Connects to inductor; carries high di/dt switching current - requires short, low-inductance layout. |
| Boost1, Boost2 | Bootstrap Supply Input | Accepts 0.1µF ceramic capacitor between LX and Boost to drive high-side MOSFET gate. |
| VIN1, VIN2 | Main Power Input | Independent inputs allow separate supply domains; must be equal per datasheet requirement. |
| FB1, FB2 | Feedback Input | Resistor-divider connection point for output voltage regulation; referenced to 0.700V internal reference. |
| EN1, EN2 | Channel Enable | Active-high logic; no internal pull-down - must be hard-wired to GND or VIN for stable operation. |
| x_AutoPFM | Mode Control | Low = auto PFM/PWM switching; High = forced PWM - enables deterministic efficiency vs. load trade-offs. |
| PGOOD | Open-Drain Status | HiZ when either channel is active; pulled low only when both outputs fall below 80% of setpoint. |
| VREG | Internal LDO Output | 5.0V ±3% regulated supply for internal circuitry; requires 1µF ceramic decoupling to AGND. |
| GND | Analog Ground | Reference for feedback, control logic, and internal regulators - isolated from PGND in layout. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Rectification | Integrated high-side/low-side MOSFETs eliminate external diode losses, achieving >90% peak efficiency at 12V→3.3V/2A. |
| Auto PFM Mode | Dynamically switches between PFM (light load) and PWM (heavy load) to maintain >85% efficiency from 1mA to 3A per channel. |
| Dual Independent Discharge Circuits | On-chip NMOS switches rapidly discharge output capacitors when EN is deasserted - eliminates need for external bleed resistors. |
| Fixed-Frequency 1.1MHz Operation | Enables use of small, low-profile inductors (e.g., 2.2µH) and ceramic output caps ≥22µF for stable regulation. |
| Comprehensive Protection Suite | Latch-type SCP, auto-recovery TSD (165°C), and UVLO (3.7V stop / 3.9V restart) ensure robust field operation without external supervision. |
Applications
| Industrial Controller Power | Smart Meter Dual-Rail Supply |
|---|---|
|
Use Scenario: Powering ARM Cortex-M7 MCU core (1.2V), I/O peripherals (3.3V), and RTC backup domain (3.0V) in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-channel DC/DC regulator providing isolated, sequenced, and monitored voltage rails. Use Value: Eliminates discrete buck converters and external discharge FETs - reduces BOM count by ≥4 components while improving transient response. |
Use Scenario: Generating 3.3V for metrology SoC and 1.8V for secure element in ANSI C12.19-compliant electricity meters. IC Role / Device Role / Timing Role: Primary power management IC delivering tightly regulated, low-noise supplies with PGOOD sequencing. Use Value: Internal 0.7V reference and ±2.5% output accuracy ensure ADC reference stability and cryptographic module reliability. |
| Surveillance Camera Imaging Chain | Home Gateway Baseband Processing |
|
Use Scenario: Supplying image sensor analog front-end (2.8V), digital ISP core (1.1V), and USB PHY (3.3V) in IP camera modules. IC Role / Device Role / Timing Role: Dual synchronous buck converter with independent enable and soft-start for rail sequencing. Use Value: 2ms fixed soft-start prevents camera boot failure due to output overshoot; discharge circuits clear residual charge before reset. |
Use Scenario: Powering Wi-Fi 6 baseband processor (0.85V), DDR4 memory interface (1.2V), and Ethernet PHY (2.5V) in residential gateways. IC Role / Device Role / Timing Role: Multi-output PMIC delivering clean, efficient, and independently controllable voltage domains. Use Value: Auto PFM mode extends standby time in low-traffic periods; PGOOD enables safe power-up sequence with host SoC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel step-down DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54202DDCR | Single-channel, 4.5–28V input, 2A max, 500kHz–2.5MHz adjustable frequency; no integrated discharge circuit or PGOOD. | Requires two devices for dual-rail designs; lacks built-in sequencing or rail monitoring capability. | Select when higher input voltage (>16V) or adjustable frequency is required; not drop-in for RAA230233GSB#HA0 footprint or feature set. |
| MP2451DT-LF-Z | Single-channel, 4.5–28V input, 0.6A max, fixed 2MHz frequency; no dual output, no PGOOD, no soft-start control. | Only suitable for low-current auxiliary rails; cannot replace RAA230233GSB#HA0's 3A dual-channel capability. | Consider only for cost-sensitive, low-power secondary rails where full feature parity is unnecessary. |
Compared with TPS54202DDCR and MP2451DT-LF-Z, the RAA230233GSB#HA0 provides true dual 3A synchronous regulation in one 20-pin HTSSOP package, with integrated discharge, PGOOD, soft-start, and auto PFM - reducing total solution size by ≥35% and eliminating six external components versus discrete implementations.
Availability
RAA230233GSB#HA0 is available at Aetrix Electronics and suitable for industrial controllers, smart meters, surveillance cameras, and home gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for RAA230233GSB#HA0 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 management, and connectivity solutions for automotive, industrial, and IoT markets.
The RAA23023x product line delivers highly integrated dual-step-down DC/DC converters targeting space-constrained, multi-rail embedded systems where efficiency, reliability, and simplified layout are critical design requirements.
FAQ
What is the maximum input voltage rating for the RAA230233GSB#HA0?
The RAA230233GSB#HA0 has an absolute maximum input voltage rating of +17.6V on VIN1 and VIN2 pins, but its recommended operating range is 4.5V to 16.0V. Exceeding 16.0V continuously may trigger UVLO protection or reduce long-term reliability. The device is designed for nominal 12V industrial bus applications with transient tolerance up to 16V.
Does the RAA230233GSB#HA0 support independent voltage adjustment on both channels?
Yes, the RAA230233GSB#HA0 supports fully independent output voltage configuration: CH1 and CH2 each accept external resistor dividers to set output voltages from 0.8V to 6.0V. The internal 0.700V reference is shared, but feedback networks (FB1/FB2) and output sensing (VOUT1/VOUT2) are physically separated, enabling asymmetric rail generation such as 1.2V + 3.3V.
How does the discharge circuit function on the RAA230233GSB#HA0?
The RAA230233GSB#HA0 integrates dedicated NMOS discharge switches on both VOUT1 and VOUT2 pins. When EN1 or EN2 transitions low, the corresponding switch turns on, sinking current through the output capacitor to ground. This achieves rapid discharge without external components - typical discharge time is under 10ms for 22µF output capacitance with 100Ω on-resistance.
Is the RAA230233GSB#HA0 pin-compatible with other parts in the RAA23023x family?
Yes, all RAA23023x variants - including RAA230231, RAA230232, and RAA230233 - share identical 20-pin HTSSOP packaging, pinout, and electrical interface. The only differences are factory-set output voltage configurations (fixed vs. adjustable); the RAA230233GSB#HA0 supports full adjustability on both channels via external resistors.
What thermal management guidance applies to the RAA230233GSB#HA0?
The RAA230233GSB#HA0 requires connection of its exposed thermal pad to a solid PGND copper plane on a 4-layer PCB. At TA = 85°C, derated power dissipation is 2,500mW (per datasheet derating curve). Layout must minimize thermal resistance: use ≥4 thermal vias (0.3mm diameter) under the pad, connect to inner ground plane, and avoid splitting the PGND plane beneath the IC.
RAA230233GSB#HA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 3A
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
RAA230233GSB#HA0 FAQ
1.How can I place an order for RAA230233GSB#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA230233GSB#HA0 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 RAA230233GSB#HA0 reliable?
The price and inventory of RAA230233GSB#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA230233GSB#HA0 is usually 5 days.
3.What payment methods are accepted for RAA230233GSB#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA230233GSB#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA230233GSB#HA0?
RAA230233GSB#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA230233GSB#HA0 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 RAA230233GSB#HA0?
For technical support, including RAA230233GSB#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA230233GSB#HA0 requirements.
6.How does Aetrix verify that RAA230233GSB#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA230233GSB#HA0 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 RAA230233GSB#HA0 meets industry standards.
7.What is the process for return or replacement of RAA230233GSB#HA0?
All RAA230233GSB#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA230233GSB#HA0, 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 RAA230233GSB#HA0 part is unused and in its original packaging.
Return procedure for RAA230233GSB#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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