Renesas RAA230153GSB#HA0

Overview

RAA230153GSB#HA0 from Renesas Electronics is a single-channel synchronous step-down DC/DC converter optimized for industrial and communications systems requiring wide-input, adjustable-output power conversion. It operates from 7V to 28V input, delivers up to 3A output current, features fixed 1.1MHz switching frequency and Auto PFM mode for high light-load efficiency, and supports output voltage adjustment from 0.8V to 6.0V via external resistors - used in smart meters and surveillance cameras.

For engineers reviewing the RAA230153GSB#HA0 datasheet, RAA230153GSB#HA0 pinout, RAA230153GSB#HA0 application, or RAA230153GSB#HA0 equivalent, key selection criteria include its 8-pin HLSOP package, integrated MOSFETs, discharge circuit, thermal shutdown at 165°C, and absence of battery backup functionality compared to RAA23014x variants.

Technical Context

The RAA230153GSB#HA0 implements a current-mode PWM control architecture with automatic transition between PFM (at light load) and PWM (at heavy load) to maintain >90% efficiency across 1mA–3A output range. Its internal 5.0V VREG rail powers control logic and requires a 1µF ceramic capacitor.

It integrates high-side (220mΩ typ.) and low-side (170mΩ typ.) MOSFETs, uses a bootstrap capacitor on the Boost pin for gate drive, and includes a dedicated discharge circuit that actively sinks output capacitance when EN is deasserted - eliminating need for external discharge FETs.

Key Specifications

Pinout & Package

RAA230153GSB#HA0 is housed in an 8-pin HLSOP (Heat Sink Small Outline Package) with exposed thermal pad, optimized for surface-mount assembly and thermal performance in space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down DC/DC converter applications.

Compared with TPS54332DR and MP2332HGTL-Z, RAA230153GSB#HA0 uniquely combines Auto PFM efficiency, integrated discharge, and HLSOP thermal performance - making it optimal for industrial systems needing both low standby power and reliable power-down behavior.

Availability

RAA230153GSB#HA0 is available at Aetrix Electronics and suitable for smart meter deployments, surveillance camera production, and industrial gateway manufacturing requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for RAA230153GSB#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 automotive, industrial, and IoT markets.

The RAA23015x series is designed specifically for high-reliability industrial power conversion - emphasizing wide-input operation, integrated protection, and minimal external component count in harsh environments.

FAQ

What is the recommended output voltage setting network for RAA230153GSB#HA0?

The RAA230153GSB#HA0 uses a resistor divider on the FB pin to set output voltage per VOUT = 0.7 × (1 + R1/R2). For example, 3.3V requires R1 = 820kΩ and R2 = 220kΩ (1% tolerance). The datasheet provides a full table of standard values; total resistor accuracy contributes directly to output voltage error, so 0.5% or better is advised for precision rails. RAA230153GSB#HA0 does not require a feedback capacitor unless instability is observed in PFM mode.

Does RAA230153GSB#HA0 support battery backup functionality?

No, RAA230153GSB#HA0 does not include battery backup circuitry. That feature is exclusive to the RAA23014x family (e.g., RAA230143), which adds VBB_IN and VBB_OUT pins for seamless switchover to backup cells. RAA230153GSB#HA0 is a pure step-down converter with no VBB-related pins or internal backup logic - confirmed by its 8-pin HLSOP pinout and functional block diagram.

What thermal derating applies to RAA230153GSB#HA0 at elevated ambient temperatures?

RAA230153GSB#HA0's maximum power dissipation in the 8-pin HLSOP package is 2600mW at TA ≤ 25°C, decreasing linearly by 26.0mW/°C above that point. At 70°C ambient, usable power drops to ~1430mW - limiting practical 3A output to lower VIN–VOUT differentials (e.g., 12V→3.3V) or requiring forced airflow. The exposed thermal pad must be soldered to a ≥2cm² copper pour for rated performance.

Can RAA230153GSB#HA0 operate with input voltage below 7V?

No - RAA230153GSB#HA0 has a hard under-voltage lockout (UVLO) threshold of 3.9V (typ.) for startup and 3.7V (typ.) for release, but its specified minimum operating input is 7V. Operation below 7V violates the Recommended Operating Conditions and risks unstable regulation, reduced current capability, or undefined behavior per the datasheet. For sub-7V inputs, consider Renesas' RAA2302xx or alternative low-VIN buck families.

How does the discharge circuit in RAA230153GSB#HA0 function during shutdown?

When the EN pin transitions from high to low, RAA230153GSB#HA0 activates an internal NMOS switch between VOUT and GND. With typical on-resistance of 100–200Ω, it discharges output capacitance exponentially (tdischarge ≈ –Rondc × COUT × ln(Vfinal/Vinitial)). For a 100µF output cap discharging from 5V to 0.5V, tdischarge ≈ 23ms - enabling rapid system reset without external components. RAA230153GSB#HA0's VREG rail sustains this function for >100ms after VIN collapse.