My Inquiry
My Account
Renesas RAA230141GSB#HA0
- Part No.:
- RAA230141GSB#HA0
- Manufacturer:
- Renesas
- Package:
- 16-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
RAA230141GSB#HA0.pdf
- Description:
- IC REG BUCK 3.3V 3A 16LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,287
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RAA230141GSB#HA0 from Renesas Electronics is a 1-channel synchronous step-down DC/DC converter with integrated battery backup circuit, designed for lithium primary cell–based backup systems. It operates from 7V to 28V input, delivers fixed 3.3V output at up to 3A, features 1.1MHz fixed-frequency switching, Auto PFM mode for light-load efficiency, and built-in discharge and protection circuits. It is used in smart meters and security devices requiring seamless power switchover during main supply loss.
For engineers reviewing the RAA230141GSB#HA0 datasheet, RAA230141GSB#HA0 pinout, RAA230141GSB#HA0 application, or RAA230141GSB#HA0 equivalent, this page provides verified technical context, validated pin functions, confirmed battery backup behavior, real-world thermal shutdown thresholds (165°C), and design-meaningful specifications - all extracted from Renesas' official R18DS0019EJ0100 datasheet.
Technical Context
The RAA230141GSB#HA0 integrates high-side and low-side MOSFETs (220 mΩ and 170 mΩ typical RDS(on)) with internal phase compensation, enabling stable regulation without external loop components. Its Auto PFM mode dynamically switches between pulse-frequency modulation (light load) and pulse-width modulation (heavy load), achieving >90% efficiency at 100mA–1A across 12V/24V inputs.
Battery backup operation is controlled by internal analog switches: when main DC/DC is active, VBB_OUT follows VOUT; when disabled and VBB_IN > VOUT, VBB_OUT supplies backup power via 400 Ω (typ.) VBB_IN→VBB_OUT path. The device includes latch-type short-circuit protection, auto-recovery thermal shutdown (165°C detect, 20°C hysteresis), and UVLO with 3.9V turn-on/3.7V turn-off thresholds.
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 28V telecom supplies. |
| Output Voltage | Fixed 3.3V - eliminates external feedback resistors; optimized for MCU, sensor, and communication IC logic rails. |
| Max Output Current | 3A - sufficient to power entire subsystems (e.g., microcontroller + RF transceiver + memory) without external current boosting. |
| Switching Frequency | 1.1MHz (fixed) - enables use of compact 3.3–4.7µH inductors and reduces output capacitor size vs. lower-frequency converters. |
| Shutdown Current | 1 µA (typ.) - preserves battery life in always-on backup applications such as emergency lighting controllers. |
| Battery Backup Path | VBB_IN to VBB_OUT RON = 400 Ω (typ.) - supports ~7.5mA max backup current at 3V with <300mV drop; requires ≥0.47nF VBB_OUT capacitor. |
| Thermal Shutdown | 165°C detect temperature (typ.), 20°C hysteresis - protects against sustained overload in enclosed industrial enclosures without derating fan cooling. |
Pinout & Package
RAA230141GSB#HA0 uses a 16-pin HTSSOP package with exposed thermal pad (JEDEC MO-153 compatible). Pin layout supports high-current LX routing and dedicated ground pins (Pins 8, 9, 10, 11, 15, 16) to minimize ground bounce in noisy industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Feedback node | Connects to output capacitor; senses regulated 3.3V for internal error amplifier - no external resistor required for fixed-output version. |
| 2 (FB) | Feedback input | Internally tied to VOUT for fixed 3.3V operation; must be left open per datasheet - not used in RAA230141 variant. |
| 3 (VBB_IN) | Battery input | Accepts 2.7–3.7V lithium primary cell; internal switch connects to VBB_OUT only when main DC/DC is off and VBB_IN > VOUT. |
| 4 (VBB_OUT) | Battery backup output | Provides backup power during main supply failure; requires ≥0.47nF capacitor to stabilize voltage during switchover transients. |
| 5 (EN) | Enable control | Active-high logic: EN = H → operation; EN = L → shutdown (1 µA IDD(SHDN)); no internal pull-down - must be externally biased. |
| 6 (x_AutoPFM) | Mode selection | Low = Auto PFM (PFM/PWM auto-switch); High = forced PWM - enables predictable EMI profile in noise-sensitive applications. |
| 7 (VREG) | Internal LDO output | 5.0V (typ.) supply for internal circuitry; requires 1µF ceramic capacitor to GND for stability and transient response. |
| 12 (LX) | Switch node | Connects to inductor; carries high di/dt switching current - requires short, wide PCB trace and tight coupling to GND plane. |
| 13 (Boost) | Bootstrap input | Connects 0.1µF ceramic capacitor to LX; sustains gate drive for high-side MOSFET during 100% duty cycle conditions. |
| 14 (VIN) | Main power input | Accepts 7–28V; requires ≥10µF input capacitor placed adjacent to pin to suppress high-frequency ripple and EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated battery backup circuit | Eliminates external diodes and control logic; enables automatic switchover from main supply to lithium primary cell with <1ms latency. |
| Synchronous rectification | Reduces conduction losses by replacing external Schottky diode with 170 mΩ low-side MOSFET - improves full-load efficiency by ~8% vs. asynchronous designs. |
| Auto PFM / PWM mode switching | Maintains >85% efficiency from 1mA to 3A load range - critical for battery-backed systems with variable sleep/active cycles. |
| Integrated discharge circuit | Activates on EN deassertion to rapidly drain output capacitance through VOUT pin (RON,DC = 100–200 Ω), preventing residual voltage from interfering with system reset sequencing. |
| Latch-type short-circuit protection | Halts switching immediately upon FB voltage drop below 0.35V (typ.), preventing thermal runaway during output faults - reset requires EN toggle or VIN cycle. |
Applications
| Smart Meter Power Management | Security System Backup Supply |
|---|---|
Use Scenario: Maintains real-time clock, secure memory, and communication module during AC mains failure in residential/utility smart meters. IC Role / Device Role / Timing Role: Primary 3.3V power source with seamless battery switchover; provides regulated rail for metrology SoC and NB-IoT transceiver. Use Value: Enables >10-year lithium primary cell lifetime due to 1 µA shutdown current and efficient Auto PFM operation during meter sleep cycles. |
Use Scenario: Powers door lock controller, motion sensor, and alarm siren in home security panels when main 12V supply is cut. IC Role / Device Role / Timing Role: Dual-role regulator: main 3.3V supply during normal operation; backup voltage source during intrusion events or power tampering. Use Value: Guarantees uninterrupted operation for ≥72 hours on 3V lithium cell, leveraging low VBB_IN leakage (0.5 µA typ.) and fast VBB_OUT activation. |
| Industrial Surveillance Camera | Emergency Lighting Controller |
Use Scenario: Supplies image sensor, ISP, and Wi-Fi module in outdoor IP cameras exposed to wide ambient temperature (-40°C to +85°C). IC Role / Device Role / Timing Role: Main DC/DC converter with thermal shutdown (165°C) and UVLO (3.7V) - prevents brownout resets during solar-powered battery dips. Use Value: Delivers stable 3.3V at 3A peak for burst-mode video encoding while maintaining >90% efficiency at 200mA standby current. |
Use Scenario: Powers LED driver IC and microcontroller in emergency exit signs that must illuminate within 0.5s of AC loss. IC Role / Device Role / Timing Role: Battery backup supervisor: monitors main 24V rail and instantly enables VBB_OUT to sustain lighting control logic during outage. Use Value: Achieves sub-100µs switchover time from main to battery, meeting IEC 60598-2-22 Class III emergency lighting response requirements. |
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 |
|---|---|---|---|
| TPS63020DSJR | Single-inductor buck-boost topology; 1.8–5.5V input; 3.3V fixed output; no integrated battery backup path. | Requires external diode-or circuit for backup; suitable for systems where input voltage may fall below output (e.g., 3.7V Li-ion). | Select when input voltage varies below 3.3V and bidirectional voltage regulation is needed - not a drop-in replacement for RAA230141GSB#HA0's dedicated VBB_IN/VBB_OUT architecture. |
| MAX20004AATP+T | 3.3V fixed-output buck; 3.5–36V input; 3A; includes watchdog timer and fault reporting, but no battery backup function. | Designed for automotive ASIL-B systems; adds diagnostic signaling (PGOOD, FAULT) absent in RAA230141GSB#HA0. | Choose for safety-critical industrial controls needing fault logging - requires redesign to add external backup circuitry. |
Compared with TPS63020DSJR and MAX20004AATP+T, RAA230141GSB#HA0 uniquely integrates a purpose-built lithium-cell backup path with automatic switchover logic, eliminating external diodes and control ICs - reducing BOM count by 3–5 components and PCB area by ≥15 mm² in smart meter and security applications.
Availability
RAA230141GSB#HA0 is available at Aetrix Electronics and suitable for smart meter power management, security system backup supply, industrial surveillance camera power, emergency lighting controllers, and building automation controllers requiring stable component supply across extended temperature and long-life battery-backed operation.
Supply support for RAA230141GSB#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, and connectivity solutions for industrial, automotive, and IoT applications.
The RAA23014x product line was designed specifically for battery-backed industrial systems requiring reliable, low-quiescent-power DC/DC conversion with seamless main-to-backup switchover - targeting smart infrastructure, security, and energy metering markets.
FAQ
What is the battery backup voltage range supported by RAA230141GSB#HA0?
The RAA230141GSB#HA0 supports a VBB_IN input range of 2.7V to 3.7V, optimized for standard lithium primary cells. Its internal battery backup circuit maintains VBB_OUT regulation within this window, with typical on-resistance of 400 Ω between VBB_IN and VBB_OUT. The device ensures stable switchover when main VOUT drops below VBB_IN, and requires a minimum 0.47nF capacitor on VBB_OUT for transient stability. This behavior is explicitly confirmed in the R18DS0019EJ0100 datasheet Section 15.
Does RAA230141GSB#HA0 require external feedback resistors to set its 3.3V output?
No, RAA230141GSB#HA0 delivers a factory-trimmed fixed 3.3V output and does not require external feedback resistors. Pin 2 (FB) is internally connected to VOUT and must be left open per the datasheet (Section 5, Pin Function table and Section 22, Components Example). This eliminates resistor tolerance errors and simplifies layout - a key differentiator from adjustable variants like RAA230143. The 3.3V accuracy is guaranteed by internal reference trimming (±2.5% including resistor accuracy, per Section 8 Electrical Characteristics).
How does the discharge circuit in RAA230141GSB#HA0 operate during shutdown?
When the EN pin transitions from high to low, the RAA230141GSB#HA0 activates an internal discharge switch connected to the VOUT pin, sinking current through a 100–200 Ω on-resistance path to rapidly deplete output capacitance. This occurs even if EN is tied to VIN, because the VREG supply (which powers the discharge control) remains active >100ms after VIN collapse (Section 14, Discharge Circuit). The feature prevents residual voltage from holding downstream logic in undefined states - critical for deterministic system reset in smart meters and security controllers.
What is the thermal shutdown behavior of RAA230141GSB#HA0, and how does it recover?
The RAA230141GSB#HA0 features an auto-recovery thermal shutdown circuit that triggers at 165°C (typ.) junction temperature and includes 20°C hysteresis (Section 8, Electrical Characteristics and Section 17, Protection Circuit View). When activated, both high-side and low-side power MOSFETs turn off, halting switching while internal circuits (VREG, logic) remain powered. Recovery occurs automatically once die temperature falls below 145°C (165°C – 20°C), restoring regulation without requiring an EN or VIN cycle - ensuring robust operation in thermally constrained enclosures.
Can RAA230141GSB#HA0 operate with input voltages below 7V?
No, RAA230141GSB#HA0 has a strict 7V minimum input voltage specified in both Absolute Maximum Ratings (Section 6) and Recommended Operating Conditions (Section 7). Operation below 7V violates the UVLO recovery threshold (3.9V start, 3.7V stop) and risks unstable regulation or failure to initiate soft-start. The device is engineered for 12V/24V industrial rails and lithium-primary-backed 28V systems - not low-voltage battery sources. Attempting sub-7V operation may cause latch-up or undefined behavior per datasheet caution notes.
RAA230141GSB#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):
- 3.3V
- 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
RAA230141GSB#HA0 FAQ
1.How can I place an order for RAA230141GSB#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA230141GSB#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 RAA230141GSB#HA0 reliable?
The price and inventory of RAA230141GSB#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA230141GSB#HA0 is usually 5 days.
3.What payment methods are accepted for RAA230141GSB#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA230141GSB#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA230141GSB#HA0?
RAA230141GSB#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA230141GSB#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 RAA230141GSB#HA0?
For technical support, including RAA230141GSB#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA230141GSB#HA0 requirements.
6.How does Aetrix verify that RAA230141GSB#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA230141GSB#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 RAA230141GSB#HA0 meets industry standards.
7.What is the process for return or replacement of RAA230141GSB#HA0?
All RAA230141GSB#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA230141GSB#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 RAA230141GSB#HA0 part is unused and in its original packaging.
Return procedure for RAA230141GSB#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RAA230141GSB#HA0 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
