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Renesas RAA230223GSB#HA0
- Part No.:
- RAA230223GSB#HA0
- Manufacturer:
- Renesas
- Package:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
RAA230223GSB#HA0.pdf
- Description:
- IC REG BUCK ADJ 3A DL 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,964
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Product details
Overview
RAA230223GSB#HA0 from Renesas Electronics is a dual synchronous step-down DC/DC converter with integrated power MOSFETs, 4.5V–16V input range, 3A per channel output capability, fixed 1.1MHz switching frequency, and built-in battery backup circuit for lithium primary cell support. It delivers regulated outputs from 0.8V to 6.0V (adjustable via external resistors) and operates in Auto PFM mode for high light-load efficiency-ideal for smart meter and security device power rails.
For engineers reviewing the RAA230223GSB#HA0 datasheet, RAA230223GSB#HA0 pinout, RAA230223GSB#HA0 application, or RAA230223GSB#HA0 equivalent, key selection considerations include its dual-channel adjustable-output architecture, battery backup functionality (VBB_IN/VBB_OUT), 20-pin HTSSOP package with exposed thermal pad, and latch-type short-circuit protection with thermal shutdown at 165°C.
Technical Context
The RAA230223GSB#HA0 integrates two independent buck regulators sharing control logic but with separate power paths, feedback networks, and enable inputs (EN1/EN2). Each channel uses synchronous rectification with internal high-side (180 mΩ typ.) and low-side (130 mΩ typ.) MOSFETs, fixed 1.1MHz oscillator, and digital soft-start (2ms typ.). The battery backup circuit enables seamless switchover between main supply (VOUT1) and backup source (VBB_IN) without external diodes.
Control features include Auto PFM/PWM mode selection via x_AutoPFM pin, open-drain PGOOD output tied to VREG-based monitoring, and integrated discharge circuits on both VOUT pins. Protection includes latch-type short-circuit detection (triggered at FB < 0.35V), thermal shutdown (165°C auto-recovery), and under-voltage lockout (UVLO start at 3.9V, stop at 3.7V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 16V - supports wide industrial input rails including 12V systems and battery-backed 5V/3.3V domains. |
| Output Current (per Channel) | 3A continuous - sufficient to power microcontrollers, sensors, and communication ICs without external current boosting. |
| Switching Frequency | 1.1MHz fixed - enables compact external components (e.g., 2.2–4.7µH inductors, 22µF ceramic output caps) and reduces audible noise. |
| Output Voltage Range | 0.8V to 6.0V adjustable - set via external resistor divider (VOUT = 0.7V × (1 + R1/R2)), covering core logic, I/O, and analog supply needs. |
| Battery Backup Support | VBB_IN (2.7–3.7V) → VBB_OUT with 400Ω typ. on-resistance - provides uninterrupted power to real-time clocks or SRAM during main supply failure. |
| Shutdown Current | 1µA typ. - minimizes standby drain in battery-critical applications like smart meters and emergency devices. |
| Soft Start Time | 2ms fixed - prevents inrush current and output overshoot without requiring external timing components. |
Pinout & Package
RAA230223GSB#HA0 is housed in a 20-pin HTSSOP package (Renesas code PTSP0020JF-A) with exposed thermal pad for enhanced thermal dissipation. The package measures 6.5mm × 4.4mm × 1.2mm and requires connection of the exposed pad to PGND/GND for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 20 | PGND1 / PGND2 | Power ground return for CH1 and CH2 inductor paths - must be routed separately from analog ground to minimize noise coupling. |
| 2, 19 | LX1 / LX2 | Switch node connections to external inductors - high dv/dt nodes requiring tight layout and short traces to reduce EMI. |
| 3, 18 | Boost1 / Boost2 | Bootstrap inputs for high-side gate drive - require 0.1µF ceramic capacitors connected directly to respective LX pins. |
| 4, 17 | VIN1 / VIN2 | Main input supplies for each channel - must be decoupled with ≥10µF capacitors placed near pins. |
| 5, 16 | VOUT1 / VOUT2 | Feedback sense points - connect directly to output capacitor anode; used with external resistor dividers for adjustable regulation. |
| 6, 15 | FB1 / FB2 | Feedback inputs - reference 0.700V internal threshold; accuracy ±2.5% over temperature and line/load conditions. |
| 7 | GND | Analog ground reference - tie to system AGND and connect exposed pad to this net or PGND for stability. |
| 8 | VREG | 5.0V internal LDO output - powers internal circuitry and requires 1µF ceramic capacitor to AGND. |
| 9 | PGOOD | Open-drain power-good indicator - pulled high via 100kΩ resistor; goes HiZ when either channel is active, low when both outputs fall below 80% of target. |
| 10 | x_AutoPFM | Mode control input - low = Auto PFM (PFM at light load, PWM at heavy load); high = forced PWM only. |
| 11 | VBB_IN | Battery input terminal - accepts 2.7–3.7V lithium primary cells; leakage <0.5µA ensures long shelf life. |
| 12 | VBB_OUT | Backup voltage output - automatically sourced from VOUT1 (during normal operation) or VBB_IN (during backup), with 100Ω/400Ω typical path resistances. |
| 13, 14 | EN1 / EN2 | Independent channel enable inputs - TTL-compatible; no internal pull-downs, so must be hard-wired to GND or VIN for defined state. |
Key Features
| Feature | Design Value |
|---|---|
| Dual adjustable-output buck regulation | Two independent 3A channels with 0.8–6.0V output range, enabling single-chip power for multi-rail systems (e.g., MCU core + I/O + analog). |
| Integrated battery backup circuit | Eliminates need for external diodes or OR-ing controllers; automatic switchover between VOUT1 and VBB_IN with <10µs response during main supply loss. |
| Auto PFM/PWM mode switching | Delivers >85% efficiency at 1mA load and >92% at 1A load (12V→3.3V), extending battery runtime in always-on edge devices. |
| Comprehensive protection suite | Latch-type short-circuit protection, thermal shutdown (165°C), UVLO (3.9V start), and integrated VOUT discharge circuits prevent damage and simplify system-level fault recovery. |
| Fixed 2ms soft-start and internal compensation | Guarantees monotonic startup without external components; phase-compensated loop eliminates need for feedback capacitor in most designs. |
Applications
| Smart Meter Power Management | Security System Backup Supply |
|---|---|
Use Scenario: Primary power for metrology MCU, RTC, and RF transceiver in utility smart meters with lithium thionyl chloride backup battery. IC Role / Device Role / Timing Role: Dual-channel DC/DC regulator providing isolated 3.3V (MCU core) and 1.8V (sensor interface) rails while managing seamless transition to VBB_IN during AC mains failure. Use Value: 1µA shutdown current extends 10-year battery life; battery backup circuit maintains RTC and memory integrity without external diode drop or leakage. | Use Scenario: Power subsystem for door access controller with tamper-detection circuitry and non-volatile event logging. IC Role / Device Role / Timing Role: Supplies 5.0V to solenoid driver and 3.3V to secure element, with VBB_OUT powering SRAM and real-time clock during AC outage or physical intrusion. Use Value: Integrated discharge circuit clears output capacitance within 10ms upon disable, preventing false wake-up; latch-type SCP avoids nuisance tripping during motor surge loads. |
| Industrial Surveillance Camera | Home Gateway Router |
Use Scenario: Compact power solution for IP camera modules requiring multiple voltage rails and reliable operation in unattended outdoor enclosures. IC Role / Device Role / Timing Role: Generates 1.1V (image sensor core), 2.8V (ISP), and 3.3V (Wi-Fi SoC) from 12V PoE input; thermal shutdown protects against enclosure overheating. Use Value: 1.1MHz switching allows use of small 2.2µH inductors; Auto PFM maintains >80% efficiency at standby video streaming current (20mA). | Use Scenario: Centralized power management in residential gateway handling Zigbee, Thread, and Wi-Fi radios alongside application processor. IC Role / Device Role / Timing Role: Delivers 1.2V (CPU), 3.3V (PHY), and 5.0V (USB port) from 12V adapter; PGOOD sequencing ensures orderly boot of baseband and radio subsystems. Use Value: Independent EN1/EN2 enables dynamic rail shutdown during sleep modes; VREG output powers auxiliary LDOs for low-noise analog supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-step-down DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65263-1RGER | 3.0V–16V input, 3A/2A dual output, no battery backup, 2.2MHz switching, QFN-24 package | Lacks VBB_IN/VBB_OUT functionality; higher switching frequency reduces inductor size but increases EMI sensitivity | Select when battery backup is unnecessary and board space favors QFN over HTSSOP. |
| MP2491DS-LF-Z | 4.5V–18V input, 3A dual output, no battery backup, 500kHz–2.2MHz programmable frequency, SOIC-16 | No integrated battery switchover; lower pin count but no VREG, PGOOD, or discharge circuit | Choose for cost-sensitive designs where external backup diodes are acceptable and thermal performance is less critical. |
Compared with TPS65263-1RGER and MP2491DS-LF-Z, the RAA230223GSB#HA0 uniquely integrates lithium-cell-ready battery backup, fixed 1.1MHz operation for predictable EMI filtering, and dual-channel discharge control-making it optimal for safety-critical, battery-backed infrastructure endpoints where reliability and feature integration outweigh footprint or frequency flexibility.
Availability
RAA230223GSB#HA0 is available at Aetrix Electronics and suitable for smart meter, security device, industrial surveillance camera, home gateway router, and building automation applications requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for RAA230223GSB#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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.
The RAA23022x product line targets battery-backed, space-constrained embedded systems requiring dual regulated rails and ultra-low quiescent current-designed specifically for smart energy, security, and industrial connectivity applications.
FAQ
What is the function of the VBB_IN and VBB_OUT pins on the RAA230223GSB#HA0?
The VBB_IN pin accepts a 2.7–3.7V lithium primary cell, while VBB_OUT provides backup power derived either from CH1's VOUT1 (during normal operation) or directly from VBB_IN (during main supply failure). The RAA230223GSB#HA0 automatically selects the higher valid source with typical on-resistances of 100Ω (VOUT1→VBB_OUT) and 400Ω (VBB_IN→VBB_OUT), eliminating external diodes and reducing voltage drop.
Does the RAA230223GSB#HA0 support independent enable control for each channel?
Yes, the RAA230223GSB#HA0 provides fully independent enable inputs: EN1 controls CH1 and EN2 controls CH2. Both are TTL-compatible with no internal pull-downs, requiring hard-wiring to GND (disable) or VIN (enable). This allows flexible power sequencing-for example, powering a microcontroller core before peripherals-or dynamic rail shutdown to reduce system standby current.
How does the Auto PFM mode operate in the RAA230223GSB#HA0, and how is it enabled?
The RAA230223GSB#HA0 enters Auto PFM mode when the x_AutoPFM pin is held low, automatically switching between PFM (for high efficiency at light loads <100mA) and PWM (for stable regulation at heavy loads ≥500mA). At light load, inductor current reverses, triggering PFM; at heavy load, continuous conduction maintains PWM. This behavior is confirmed in the RAA230223GSB#HA0 datasheet Section 16 and enables >85% efficiency across a 1000:1 load range.
What protection features are integrated into the RAA230223GSB#HA0?
The RAA230223GSB#HA0 integrates latch-type short-circuit protection (triggered when FB falls below 0.35V), thermal shutdown at 165°C (auto-recovery), under-voltage lockout (UVLO start at 3.9V, stop at 3.7V), and per-channel discharge circuits activated on EN deassertion. These protections are documented in Sections 22–23 of the RAA230223GSB#HA0 datasheet and ensure robust operation in harsh environments without external supervision circuitry.
Can the RAA230223GSB#HA0 generate different output voltages on each channel?
Yes, the RAA230223GSB#HA0 supports independent output voltage programming on CH1 and CH2 using external resistor dividers connected to FB1/VOUT1 and FB2/VOUT2. The output is calculated as VOUT = 0.7V × (1 + R1/R2), with supported range 0.8V–6.0V. This capability is explicitly stated for RAA230223 in the Product Lineup Table (Page 2) and enables asymmetric rail generation-for instance, 1.2V for a processor core and 3.3V for I/O-within a single IC.
RAA230223GSB#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
RAA230223GSB#HA0 FAQ
1.How can I place an order for RAA230223GSB#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA230223GSB#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 RAA230223GSB#HA0 reliable?
The price and inventory of RAA230223GSB#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA230223GSB#HA0 is usually 5 days.
3.What payment methods are accepted for RAA230223GSB#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA230223GSB#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA230223GSB#HA0?
RAA230223GSB#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA230223GSB#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 RAA230223GSB#HA0?
For technical support, including RAA230223GSB#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA230223GSB#HA0 requirements.
6.How does Aetrix verify that RAA230223GSB#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA230223GSB#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 RAA230223GSB#HA0 meets industry standards.
7.What is the process for return or replacement of RAA230223GSB#HA0?
All RAA230223GSB#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA230223GSB#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 RAA230223GSB#HA0 part is unused and in its original packaging.
Return procedure for RAA230223GSB#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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