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Renesas RAA230232GSB#HA0
- Part No.:
- RAA230232GSB#HA0
- Manufacturer:
- Renesas
- Package:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
RAA230232GSB#HA0.pdf
- Description:
- IC REG BUCK 3.3V/5V 3A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,264
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Product details
Overview
RAA230232GSB#HA0 from Renesas Electronics is a dual synchronous step-down DC/DC converter with fixed 3.3V CH1 and 5.0V CH2 outputs, 4.5–16V input range, 3A per channel output current, 1.1MHz fixed switching frequency, and integrated power MOSFETs. It delivers high-efficiency power conversion for multi-rail embedded systems requiring stable low-noise voltage rails in space-constrained industrial and communications equipment.
For engineers reviewing the RAA230232GSB#HA0 datasheet, RAA230232GSB#HA0 pinout, RAA230232GSB#HA0 application, or RAA230232GSB#HA0 equivalent, this page provides verified technical context, validated pin functions, confirmed dual-channel fixed-output behavior (no battery backup), real-world application mappings, and two rigorously cross-checked alternative parts for design flexibility.
Technical Context
The RAA230232GSB#HA0 implements two independent PWM-controlled buck regulators sharing a common 1.1MHz oscillator and internal phase compensator. Each channel features synchronous rectification, soft-start (2ms typ.), and auto PFM/PWM mode switching based on load current to maintain efficiency across 10μA–3A.
It integrates protection including 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. Unlike RAA23022x variants, it omits battery backup circuitry - pins 11 (VBB_IN) and 12 (VBB_OUT) are grounded per RAA23023x pinout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 16V - supports wide-input industrial and telecom supplies without external pre-regulation. |
| Output Voltages | CH1: fixed 3.3V; CH2: fixed 5.0V - eliminates external feedback resistors and simplifies layout for dual-rail MCU/peripheral systems. |
| Max Output Current | 3A per channel - enables direct powering of FPGA I/O banks, ARM SoC cores, or multi-sensor modules. |
| Switching Frequency | 1.1MHz fixed - allows compact 2.2–3.3μH inductors and reduces EMI filtering burden vs. lower-frequency converters. |
| Shutdown Current | 1μA typ. - preserves battery life in always-on monitoring nodes during deep sleep states. |
| Soft Start Time | 2ms fixed - prevents inrush current damage to input capacitors and avoids brown-out on shared supply rails. |
| Thermal Shutdown | 165°C with 20°C hysteresis - protects against sustained overload or poor heatsinking in sealed enclosures. |
Pinout & Package
RAA230232GSB#HA0 uses a 20-pin HTSSOP package (Renesas code PTSP0020JF-A) with exposed thermal pad connected to PGND for enhanced thermal dissipation. Pin functions align with RAA23023x series - pins 11 and 12 (VBB_IN/VBB_OUT) are unused and must be grounded.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 20 | PGND1 / PGND2 | Separate power ground returns for CH1/CH2 - minimize ground bounce coupling between channels. |
| 2, 19 | LX1 / LX2 | Switch-node connections to external inductors - require tight layout with low-inductance paths to reduce EMI. |
| 3, 18 | Boost1 / Boost2 | Bootstrap inputs for high-side FET gate drive - each requires 0.1μF ceramic capacitor to LX. |
| 4, 17 | VIN1 / VIN2 | Independent input supplies per channel - must be tied together per datasheet requirement. |
| 5, 16 | VOUT1 / VOUT2 | Fixed-output voltage terminals - CH1 = 3.3V, CH2 = 5.0V; connect output capacitors ≥22μF ceramic. |
| 6, 15 | FB1 / FB2 | Feedback inputs - internally tied to fixed 0.7V reference; leave open for fixed-output operation. |
| 7 | GND | Analog ground reference - isolate from PGND with single-point connection near VREG decoupling. |
| 8 | VREG | 5.0V internal LDO output - powers control circuitry; requires 1μF ceramic capacitor to AGND. |
| 9 | PGOOD | Open-drain power-good indicator - pulled up to VOUT1/VOUT2/VREG; asserts HiZ when either channel is active. |
| 10 | x_AutoPFM | Mode control input - logic low enables auto PFM/PWM transition; logic high forces fixed PWM mode. |
| 11, 12 | GND / GND | No-connect (NC) for RAA23023x - must be grounded per pinout table on Page 7. |
| 13, 14 | EN1 / EN2 | Independent enable inputs - high = channel active; no internal pull-downs, so external tie-high/low required. |
Key Features
| Feature | Design Value |
|---|---|
| Auto PFM/PWM Mode Switching | Automatically transitions between PFM (light load) and PWM (heavy load) to maintain >85% efficiency from 10μA to 3A per channel. |
| Synchronous Rectification | Integrated high-side (180mΩ) and low-side (130mΩ) MOSFETs eliminate external diodes and reduce conduction losses by ~40% vs. asynchronous designs. |
| Discharge Circuit | Internal discharge switches rapidly bleed output capacitance when EN is deasserted - eliminates need for external bleed resistors or FETs. |
| Power Good Monitoring | Open-drain PGOOD signal indicates regulation status of either channel - enables safe power sequencing with downstream devices. |
| Robust Protection Suite | Latch-type short-circuit protection, thermal shutdown (165°C), and UVLO (3.7V–3.9V window) prevent damage under fault conditions without external components. |
Applications
| Industrial Surveillance Camera | Smart Home Gateway |
|---|---|
Use Scenario: Dual-rail power for image sensor (3.3V) and baseband processor (5.0V) in outdoor IP cameras with wide temperature (-40°C to +85°C) operation. IC Role / Device Role / Timing Role: Primary DC/DC converter delivering regulated, low-noise rails with fast transient response to handle burst-mode video encoding. Use Value: Integrated discharge circuit ensures clean power-down of volatile memory during unexpected power loss; 1.1MHz switching enables small 3.3μH inductors for compact PCB area. |
Use Scenario: Power management for Wi-Fi 6 router SoC (3.3V I/O, 5.0V USB ports) and Zigbee co-processor in energy-efficient smart home hubs. IC Role / Device Role / Timing Role: Dual-channel buck regulator providing independent enable control for subsystem power gating and dynamic voltage scaling. Use Value: Auto PFM mode achieves <15μA quiescent current at light load, extending standby time; PGOOD enables synchronized reset sequencing across multiple ICs. |
| Building Security Panel | Smart Meter Data Logger |
Use Scenario: Reliable power for microcontroller (3.3V), RS-485 transceiver (5.0V), and tamper-detection circuitry in fire alarm control panels operating 24/7. IC Role / Device Role / Timing Role: Main system power IC with thermal shutdown and latch-type SCP to withstand sustained overloads during fault reporting. Use Value: 165°C thermal shutdown with 20°C hysteresis prevents nuisance tripping in hot enclosures while ensuring fail-safe shutdown; UVLO prevents brown-out resets during AC line sags. |
Use Scenario: Powering metrology ASIC (3.3V) and cellular modem (5.0V) in battery-backed utility meters requiring ultra-low shutdown current. IC Role / Device Role / Timing Role: Primary DC/DC converter enabling long-term battery operation via 1μA shutdown current and precise enable control. Use Value: Fixed 3.3V/5.0V outputs eliminate resistor networks and calibration drift; soft-start prevents inrush-induced voltage droop on shared battery supply. |
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 2A channel, 4.5–17V input, adjustable output; no integrated discharge circuit or PGOOD. | Requires two separate ICs for dual-rail; lacks power-good signaling and automatic mode switching. | Select when cost sensitivity outweighs integration benefits and discrete sequencing is acceptable. |
| MP2451DT-LF-Z | Single 0.6A channel, 3.3–36V input, adjustable output; no dual-channel capability or fixed-voltage variants. | Cannot replace RAA230232GSB#HA0 directly - needs two units plus external feedback and sequencing logic. | Choose only for single-rail, high-input-voltage (>16V) applications where footprint is secondary to input range. |
Compared with TPS54202DDCR and MP2451DT-LF-Z, the RAA230232GSB#HA0 provides true dual-channel integration with fixed outputs, built-in power sequencing support via PGOOD, and autonomous efficiency optimization - reducing BOM count by ≥30% and eliminating external compensation components.
Availability
RAA230232GSB#HA0 is available at Aetrix Electronics and suitable for industrial surveillance cameras, smart home gateways, building security panels, and smart meter data loggers requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for RAA230232GSB#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 timing solutions for industrial, automotive, and infrastructure markets.
The RAA23023x product line delivers highly integrated dual-step-down DC/DC converters targeting space-constrained, multi-rail embedded systems where reliability, efficiency across load range, and simplified design are critical.
FAQ
What is the key functional difference between RAA230232GSB#HA0 and RAA230222GSB#HA0?
The RAA230232GSB#HA0 is a dual step-down DC/DC converter without battery backup circuitry, whereas RAA230222GSB#HA0 includes an integrated battery backup path (VBB_IN/VBB_OUT pins). RAA230232GSB#HA0 grounds pins 11 and 12 per its RAA23023x pinout, disabling backup functionality and simplifying design for mains-powered applications.
Does RAA230232GSB#HA0 require external feedback resistors to set output voltage?
No. The RAA230232GSB#HA0 has factory-trimmed fixed outputs: CH1 delivers 3.3V and CH2 delivers 5.0V. Its FB1 and FB2 pins are internally connected to the 0.7V reference and must remain unconnected (open) - no external resistors or feedback capacitors are needed for nominal operation.
What is the recommended layout practice for the exposed thermal pad on RAA230232GSB#HA0?
The HTSSOP package of RAA230232GSB#HA0 includes an exposed thermal pad that must be soldered to a dedicated PGND copper pour on the PCB. Renesas specifies connecting this pad directly to PGND (not AGND) using multiple thermal vias to inner-layer ground planes to ensure optimal thermal performance and junction temperature control.
How does the discharge circuit in RAA230232GSB#HA0 operate during power-down?
When EN1 or EN2 is pulled low, the RAA230232GSB#HA0 activates internal discharge switches between VOUT1/VOUT2 and PGND, rapidly bleeding stored charge from output capacitors. This eliminates hold-up voltage that could cause undefined logic states or latch-up in downstream ICs, removing the need for external bleed resistors or FETs.
Can RAA230232GSB#HA0 operate with different input voltages on VIN1 and VIN2?
No. The RAA230232GSB#HA0 datasheet explicitly requires VIN1 and VIN2 to be tied together and supplied from the same source. Applying different voltages violates absolute maximum ratings and may cause internal biasing faults, unpredictable regulation, or permanent damage due to unequal current sharing in shared control circuitry.
RAA230232GSB#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:
- Fixed
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 3.3V, 5V
- Voltage - Output (Max):
- -
- 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
RAA230232GSB#HA0 FAQ
1.How can I place an order for RAA230232GSB#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA230232GSB#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 RAA230232GSB#HA0 reliable?
The price and inventory of RAA230232GSB#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA230232GSB#HA0 is usually 5 days.
3.What payment methods are accepted for RAA230232GSB#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA230232GSB#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA230232GSB#HA0?
RAA230232GSB#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA230232GSB#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 RAA230232GSB#HA0?
For technical support, including RAA230232GSB#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA230232GSB#HA0 requirements.
6.How does Aetrix verify that RAA230232GSB#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA230232GSB#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 RAA230232GSB#HA0 meets industry standards.
7.What is the process for return or replacement of RAA230232GSB#HA0?
All RAA230232GSB#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA230232GSB#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 RAA230232GSB#HA0 part is unused and in its original packaging.
Return procedure for RAA230232GSB#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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