Renesas RAA230214GSB#HA0

Overview

RAA230214GSB#HA0 from Renesas is a monolithic 5.5V-input, 3A synchronous step-down DC/DC converter with integrated 500mA LDO, preset to 3.3V outputs on both channels, fixed 1 MHz switching frequency, and ultra-low-power mode consuming 25 µA typical. It delivers regulated power to MCU, FPGA, and ASIC core/logic rails in industrial and smart meter applications.

For engineers reviewing the RAA230214GSB#HA0 datasheet, RAA230214GSB#HA0 pinout, RAA230214GSB#HA0 application, or RAA230214GSB#HA0 equivalent, key selection considerations include dual-rail sequencing control, 100% duty-cycle operation for low dropout, internal soft-start (2 ms), power-good signaling, and thermal/short-circuit latch protection.

Technical Context

The RAA230214GSB#HA0 integrates two independent regulation paths: a current-mode synchronous buck converter (ch1) with integrated high- and low-side MOSFETs (R_on-p1/R_on-n1 ≤ 0.3 Ω each), and a foldback-current-limited LDO (ch2) supporting 500 mA output. Both channels share a common analog supply (AVDD) and ground (AGND), with independent enable pins (SHDNB1/SHDNB2) enabling three programmable startup sequences.

Its protection architecture includes timer-latch short-circuit protection (10 ms delay) on ch1, thermal shutdown (>150°C), auto-recovery UVLO (2.9 V start / 2.8 V stop), and discharge circuits on both outputs. The DSTB pin selects between normal mode (both channels active) and ultra-low-power mode (ch1 disabled, ch2 active at 25 µA I_Q).

Key Specifications

Pinout & Package

RAA230214GSB#HA0 is housed in a thermally enhanced 20-pin HTSSOP package with exposed pad for PCB heat dissipation. Pin functions are validated per Renesas R18DS0013EJ0102 Rev.1.02 datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output regulator applications.

Compared with TPS65023RGZR and MAX20006ATPA/VY+, the RAA230214GSB#HA0 uniquely combines fixed 3.3 V/3.3 V dual output, 25 µA ultra-low-power mode, and internal sequencing-making it optimal for space-constrained, battery-backed industrial and metering systems where rail count and standby current are critical.

Availability

RAA230214GSB#HA0 is available at Aetrix Electronics and suitable for industrial PLC modules, smart electricity meters, communications baseband units, and FPGA development platforms requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for RAA230214GSB#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 embedded solutions for industrial, automotive, and infrastructure markets.

The RAA23021x product line delivers highly integrated, low-quiescent-power dual-output regulators targeting space- and power-constrained applications such as smart meters, PLCs, and edge IoT nodes.

FAQ

What output voltages does the RAA230214GSB#HA0 provide?

The RAA230214GSB#HA0 provides fixed 3.3 V output on both channels: ch1 is a synchronous step-down DC/DC converter capable of 3 A, and ch2 is a 500 mA LDO. These preset values eliminate the need for external feedback resistors in standard configurations, simplifying design and improving accuracy to ±2.5% (ch1) and ±1% (ch2).

How does the RAA230214GSB#HA0 manage power sequencing between its two channels?

The RAA230214GSB#HA0 supports three sequencing modes via SHDNB1 and SHDNB2 logic levels: ch1 before ch2, ch2 before ch1, or simultaneous startup. Each mode uses an internal 2 ms digital soft-start timer per channel, and the power-good (PG) signal asserts only after both outputs reach 90% of their nominal voltage-ensuring reliable system-level reset coordination in the RAA230214GSB#HA0.

What is the purpose and behavior of the DSTB pin on the RAA230214GSB#HA0?

The DSTB pin on the RAA230214GSB#HA0 selects operating mode: logic low enables normal operation (both ch1 and ch2 active), while logic high activates ultra-low-power mode (ch1 disabled, ch2 active at 25 µA typical quiescent current). In this mode, ch2 continues delivering 3.3 V to critical circuits like RTC or sensors, making the RAA230214GSB#HA0 ideal for battery-backed metering applications.

Does the RAA230214GSB#HA0 include protection features, and how do they operate?

Yes, the RAA230214GSB#HA0 includes timer-latch short-circuit protection (10 ms delay) on ch1, thermal shutdown (>150°C), auto-recovery UVLO (2.9 V start), and foldback overcurrent protection on ch2. All protections remain active in normal mode but are disabled in ultra-low-power mode. Fault recovery requires toggling SHDNB pins or cycling AVDD-ensuring robust operation in the RAA230214GSB#HA0 without external supervision.

What package type and thermal characteristics apply to the RAA230214GSB#HA0?

The RAA230214GSB#HA0 uses a 20-pin HTSSOP package with exposed thermal pad, rated for –40°C to +85°C ambient operation and junction temperatures up to +125°C continuous. Its thermal resistance (θ_JA) is optimized for 4-layer PCBs with 50% copper coverage; derating begins at +25°C (34 mW/°C), enabling 3 A ch1 output at full load within industrial temperature limits for the RAA230214GSB#HA0.