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Renesas RAA230142GSB#HA0
- Part No.:
- RAA230142GSB#HA0
- Manufacturer:
- Renesas
- Package:
- 16-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
RAA230142GSB#HA0.pdf
- Description:
- IC REG BUCK 5V 3A 16LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,197
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Product details
Overview
RAA230142GSB#HA0 from Renesas Electronics is a single-channel synchronous step-down DC/DC converter with integrated battery backup circuitry, designed for lithium primary cell–based backup systems. It operates from 7V to 28V input, delivers a fixed 5.0V output at up to 3A, and features Auto PFM mode for high light-load efficiency-enabling low-power operation in smart meter and security device power rails.
For engineers reviewing the RAA230142GSB#HA0 datasheet, RAA230142GSB#HA0 pinout, RAA230142GSB#HA0 application, or RAA230142GSB#HA0 equivalent, key selection considerations include its 16-pin HTSSOP package, built-in VBB_IN/VBB_OUT battery switchover logic, 1.1MHz fixed switching frequency, 2ms soft-start, and latch-type short-circuit protection.
Technical Context
The RAA230142GSB#HA0 integrates high- and low-side MOSFETs (220mΩ and 170mΩ typical RDS(on)) and an internal phase compensator, enabling stable regulation without external compensation components. Its Auto PFM mode dynamically switches between pulse-frequency modulation (light load) and pulse-width modulation (heavy load), with reverse-current detection triggering PFM entry when inductor ripple bottom crosses 0A.
Battery backup functionality is implemented via dedicated VBB_IN and VBB_OUT pins, supporting seamless switchover from main DC/DC output to lithium primary cell (2.7V–3.7V) during VIN loss. The device includes a discharge circuit (100–200Ω on-resistance) that actively sinks VOUT capacitance upon shutdown, and thermal shutdown activates at 165°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7V to 28V - supports wide industrial input rails including 12V/24V systems and battery-backed supplies. |
| Output Voltage | Fixed 5.0V - eliminates external feedback resistor network; optimized for USB-peripheral or microcontroller I/O rail compatibility. |
| Max Output Current | 3A - sufficient for powering SoCs, sensors, and communication ICs in gateways and surveillance cameras. |
| Switching Frequency | 1.1MHz (fixed) - enables use of compact 3.3–4.7µH inductors and reduces output capacitor size requirements. |
| Shutdown Current | 1µA (typ.) - ensures minimal battery drain during system standby in backup mode. |
| Soft Start Time | 2ms (fixed) - prevents inrush current and output overshoot without requiring external timing components. |
| Protection Features | Latch-type short-circuit protection, thermal shutdown (165°C), and auto-recovery UVLO (3.9V start / 3.7V stop). |
Pinout & Package
RAA230142GSB#HA0 is housed in a 16-pin HTSSOP package with exposed thermal pad, optimized for high-power density and thermal dissipation in space-constrained industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Feedback sense node | Connects to output rail for closed-loop regulation; internally referenced to 0.7V E/A threshold. |
| 2 (FB) | Feedback input | Accepts voltage divider signal for adjustable variants; open for RAA230142 fixed-5V operation. |
| 3 (VBB_IN) | Battery input | Accepts 2.7–3.7V lithium primary cell; enables automatic backup switchover when main supply fails. |
| 4 (VBB_OUT) | Battery backup output | Provides seamless backup power path; sourced from VOUT during normal operation or VBB_IN during failure. |
| 5 (EN) | Enable control | Active-high logic; drives device into shutdown (1µA IDD) when pulled low. |
| 6 (x_AutoPFM) | Mode select | Low = Auto PFM (PFM/PWM auto-switch); High = forced PWM mode only. |
| 7 (VREG) | Internal LDO output | 5.0V ±3% regulated supply for internal circuitry; requires 1µF ceramic decoupling to GND. |
| 8–11, 15–16 (GND) | Power/Signal ground | Multiple GND pins reduce impedance; exposed pad must be soldered to PCB ground plane for thermal performance. |
| 12 (LX) | Switch node | Connects to inductor; carries high di/dt switching current; requires tight layout to minimize EMI. |
| 13 (Boost) | Bootstrap supply | Connects 0.1µF ceramic capacitor to LX to drive high-side MOSFET gate above VIN. |
| 14 (VIN) | Main power input | Accepts 7–28V; requires ≥10µF input capacitance placed near pin to suppress ripple and transients. |
Key Features
| Feature | Design Value |
|---|---|
| Battery backup switchover logic | Automatic VOUT-to-VBB_IN transition without external diodes; supports 2.7–3.7V Li-primary cells with ≤400Ω VBB_IN→VBB_OUT on-resistance. |
| Integrated discharge circuit | Active VOUT sink (100–200Ω) discharges output capacitance rapidly upon EN deactivation-eliminates need for external bleed resistors or FETs. |
| Synchronous rectification | On-chip high- and low-side MOSFETs (220mΩ/170mΩ) maximize conversion efficiency across 1mA–3A load range, especially critical in battery-limited applications. |
| Auto PFM/PWM mode control | Dynamic switching between PFM (high efficiency at <100mA) and PWM (stable regulation at >500mA) based on real-time inductor current zero-crossing detection. |
| Robust protection suite | Latch-type SCP resets only via EN toggle or UVLO recovery; thermal shutdown halts switching at 165°C with auto-restart after cooldown; UVLO prevents brownout operation. |
Applications
| Smart Meter Power Management | Surveillance Camera Backup Supply |
|---|---|
Use Scenario: Maintaining real-time clock, memory retention, and secure boot during AC mains failure in AMI smart meters. IC Role / Device Role / Timing Role: Primary 5V DC/DC regulator with autonomous battery switchover; provides uninterrupted 5V rail to MCU and RTC during grid outage. Use Value: Eliminates external diode-OR circuitry and reduces BOM count by integrating backup path control, discharge, and regulation in one 16-pin HTSSOP device. |
Use Scenario: Powering image sensor and video processor in outdoor IP cameras during temporary PoE interruption or battery backup activation. IC Role / Device Role / Timing Role: Main 5V power source with fast VBB switchover (<1ms) and active VOUT discharge to prevent brownout-induced firmware corruption. Use Value: Ensures continuous operation through transient power loss using lithium primary cell; 3A capability supports high-resolution sensor bursts without voltage droop. |
| Home Gateway Router Power | Emergency Lighting Control Unit |
Use Scenario: Delivering stable 5V to Wi-Fi SoC, Ethernet PHY, and USB peripherals in residential gateways with optional battery backup for VoIP continuity. IC Role / Device Role / Timing Role: Synchronous buck converter with Auto PFM for ultra-low idle power (<1µA shutdown) and rapid wake-up from backup mode. Use Value: Achieves >85% efficiency at 10mA load (PFM) and >92% at 1A (PWM), extending battery life while meeting Energy Star standby requirements. |
Use Scenario: Providing regulated 5V to microcontroller and LED driver ICs in emergency exit sign controllers during AC failure. IC Role / Device Role / Timing Role: Dual-role power IC: main regulator during AC operation and battery-backed keeper during outage; includes programmable discharge to reset state before restart. Use Value: Guarantees fail-safe behavior-discharges VOUT before re-enabling backup to prevent latch-up; thermal shutdown protects against enclosure overheating in sealed fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC/DC converter with battery backup applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RAA230143GSB#HA0 | Adjustable output (0.8–6.0V via external resistors); identical pinout, package, and backup functionality. | Used where variable VOUT or future design flexibility is required; not drop-in for fixed-5V systems without resistor changes. | Select RAA230143GSB#HA0 only if output voltage tuning or multi-rail support is needed; RAA230142GSB#HA0 offers lower BOM cost and simpler layout for 5V-only designs. |
| TPS63020DSJR | Single-inductor dual-output (buck-boost); no integrated battery backup; 2.5–5.5V input; 3A max; 2.5MHz switching. | Targets wider input ranges (e.g., single-cell Li-ion) but lacks VBB_IN/VBB_OUT switchover logic and discharge circuit. | Choose TPS63020DSJR for battery-powered portable devices needing buck-boost; RAA230142GSB#HA0 remains superior for industrial 7–28V systems requiring seamless lithium-primary backup. |
Compared with RAA230143GSB#HA0, the RAA230142GSB#HA0 reduces design complexity and component count for fixed-5V applications, while versus TPS63020DSJR it delivers purpose-built battery switchover and discharge functionality essential for infrastructure-grade backup systems-without requiring external diodes, FETs, or control logic.
Availability
RAA230142GSB#HA0 is available at Aetrix Electronics and suitable for smart meter, surveillance camera, home gateway, emergency lighting, and industrial controller applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for RAA230142GSB#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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets, with emphasis on reliability and energy efficiency.
The RAA23014x product line targets industrial and infrastructure power management, specifically addressing the need for integrated DC/DC conversion with autonomous battery backup in smart grid, security, and building automation systems.
FAQ
What is the function of the x_AutoPFM pin on the RAA230142GSB#HA0?
The x_AutoPFM pin on the RAA230142GSB#HA0 selects operating mode: logic low enables Auto PFM (automatic switching between PFM at light load and PWM at heavy load), while logic high forces fixed PWM mode. This pin has no internal pull-down, so it must be externally tied to GND or VIN. In RAA230142GSB#HA0, this control allows designers to optimize efficiency versus noise trade-offs depending on system load profile and EMI constraints.
Does the RAA230142GSB#HA0 require external components for battery backup operation?
No, the RAA230142GSB#HA0 integrates all necessary circuitry for lithium primary cell backup, including VBB_IN/VBB_OUT switchover logic, on-resistance paths (≤400Ω VBB_IN→VBB_OUT), and automatic discharge control. Only a 0.47nF minimum capacitor on VBB_OUT and a 3.0–3.7V lithium cell are required-no external diodes, MOSFETs, or control ICs are needed to implement seamless backup functionality in the RAA230142GSB#HA0 design.
How does the RAA230142GSB#HA0 handle output short-circuit conditions?
The RAA230142GSB#HA0 implements latch-type short-circuit protection: if FB voltage drops below 0.35V (typ.), the output shuts down and remains latched off until EN is toggled low-to-high or VIN falls below UVLO stop voltage (3.7V). During latch, internal circuits like VREG remain powered. This behavior prevents thermal runaway and ensures deterministic recovery-critical for safety-critical RAA230142GSB#HA0 deployments in security and emergency systems.
Can the RAA230142GSB#HA0 operate with input voltages below 7V?
No-the RAA230142GSB#HA0 has a specified minimum input voltage of 7V per its Recommended Operating Conditions and Absolute Maximum Ratings. Operation below 7V may cause UVLO activation (output stops at VIN < 3.7V), unstable regulation, or failure to start. The device is engineered for industrial 12V/24V rails and battery-backed 7–28V systems; sub-7V inputs fall outside its validated operating range and are not supported for RAA230142GSB#HA0.
What thermal derating applies to the RAA230142GSB#HA0 in its 16-pin HTSSOP package?
The RAA230142GSB#HA0's 16-pin HTSSOP package has a maximum power dissipation of 2900mW at TA ≤ 25°C, decreasing linearly by −29.0mW/°C above 25°C. On a standard 4-layer board (76.2mm × 114.3mm, 50% copper coverage), this translates to ~2300mW at 45°C ambient. Proper thermal design-including soldering the exposed pad to a large GND plane-is mandatory to sustain 3A output current without exceeding TJ = 125°C in the RAA230142GSB#HA0.
RAA230142GSB#HA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-LSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 7V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 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:
- 16-LSSOP
RAA230142GSB#HA0 FAQ
1.How can I place an order for RAA230142GSB#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA230142GSB#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 RAA230142GSB#HA0 reliable?
The price and inventory of RAA230142GSB#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA230142GSB#HA0 is usually 5 days.
3.What payment methods are accepted for RAA230142GSB#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA230142GSB#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA230142GSB#HA0?
RAA230142GSB#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA230142GSB#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 RAA230142GSB#HA0?
For technical support, including RAA230142GSB#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA230142GSB#HA0 requirements.
6.How does Aetrix verify that RAA230142GSB#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA230142GSB#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 RAA230142GSB#HA0 meets industry standards.
7.What is the process for return or replacement of RAA230142GSB#HA0?
All RAA230142GSB#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA230142GSB#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 RAA230142GSB#HA0 part is unused and in its original packaging.
Return procedure for RAA230142GSB#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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