Renesas RAA230153GSB#YK0

Overview

RAA230153GSB#YK0 from Renesas Electronics is a single-channel synchronous step-down DC/DC converter optimized for industrial and embedded power rails, supporting 7V–28V input and adjustable 0.8V–6.0V output with up to 3A continuous current. It features fixed 1.1MHz switching frequency, 2ms soft start, and Auto PFM mode for high light-load efficiency. Used in smart meters and surveillance cameras where wide VIN and compact footprint are critical.

For engineers reviewing the RAA230153GSB#YK0 datasheet, RAA230153GSB#YK0 pinout, RAA230153GSB#YK0 application, or RAA230153GSB#YK0 equivalent, key selection criteria include its 8-pin HLSOP package, absence of battery backup circuitry (distinguishing it from RAA23014x), integrated MOSFETs, discharge function, and thermal shutdown at 165°C.

Technical Context

The RAA230153GSB#YK0 implements a current-mode PWM controller with internal high-side (220mΩ) and low-side (170mΩ) MOSFETs, operating exclusively in Auto PFM mode-automatically switching between PFM at light load and PWM at heavy load without external control. Its feedback loop uses a 0.700V reference voltage with ±2.5% accuracy over resistor-set outputs.

It integrates protection including latch-type short-circuit protection triggered at FB < 0.35V, auto-recovery thermal shutdown at 165°C (20°C hysteresis), and under-voltage lockout with 3.9V turn-on and 3.7V turn-off thresholds. The device also includes a dedicated discharge circuit (100–200Ω on-resistance) activated on EN deassertion to rapidly collapse VOUT.

Key Specifications

Pinout & Package

RAA230153GSB#YK0 is housed in an 8-pin HLSOP package with exposed thermal pad, optimized for compact PCB layouts and efficient heat dissipation in space-constrained applications like gateways and smart home hubs.

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 MP2332GJ-Z, RAA230153GSB#YK0 uniquely combines Auto PFM for ultra-low standby power, integrated discharge for clean power-loss response, and 8-pin HLSOP packaging for thermal performance - making it optimal for space- and efficiency-constrained industrial edge nodes.

Availability

RAA230153GSB#YK0 is available at Aetrix Electronics and suitable for smart meter power supplies, surveillance camera core rails, and industrial gateway processor rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for RAA230153GSB#YK0 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, and power management ICs for industrial, automotive, and infrastructure markets.

The RAA23015x product line delivers highly integrated, thermally robust DC/DC converters targeting space-constrained embedded systems needing wide-input, high-efficiency, and fault-tolerant power conversion - especially where battery backup is unnecessary.

FAQ

What is the output voltage adjustment range for RAA230153GSB#YK0?

The RAA230153GSB#YK0 supports an adjustable output voltage range of 0.8V to 6.0V, set using an external resistor divider connected to the FB pin. The formula is VOUT = 0.7V × (1 + R1/R2), with output accuracy specified at ±2.5% including resistor tolerance effects. This range accommodates common logic rails (1.2V, 1.8V, 3.3V, 5.0V) and custom analog supply needs.

Does RAA230153GSB#YK0 include battery backup functionality?

No, RAA230153GSB#YK0 does not include battery backup circuitry. That feature is exclusive to the RAA23014x series (e.g., RAA230143). The RAA230153GSB#YK0 is a standalone step-down converter with no VBB_IN or VBB_OUT pins - confirmed by its 8-pin HLSOP pinout and datasheet block diagram. Use RAA230143 for designs requiring seamless switchover to backup power.

How does the Auto PFM mode in RAA230153GSB#YK0 improve system efficiency?

RAA230153GSB#YK0's Auto PFM mode automatically shifts between pulse-frequency modulation (PFM) at light loads and pulse-width modulation (PWM) at heavy loads. At loads below ~200mA, PFM reduces switching losses and quiescent current, achieving >85% efficiency even at 100µA output. At full 3A load, PWM ensures tight regulation and minimal ripple - all without external mode-control signals.

What protection features are built into RAA230153GSB#YK0?

RAA230153GSB#YK0 integrates three key protections: (1) latch-type short-circuit protection that disables output when FB falls below 0.35V; (2) auto-recovery thermal shutdown at 165°C (20°C hysteresis); and (3) under-voltage lockout with 3.9V turn-on and 3.7V turn-off thresholds. All operate independently of EN status and maintain internal VREG supply during faults.

Can RAA230153GSB#YK0 safely discharge its output capacitors when powered down?

Yes, RAA230153GSB#YK0 includes an integrated discharge circuit activated when the EN pin is pulled low. With 100–200Ω on-resistance between VOUT and GND, it rapidly collapses the output voltage - typically within milliseconds - eliminating need for external bleed resistors or MOSFETs. This prevents brownout resets and ensures clean power sequencing in multi-rail systems.