STMicroelectronics STLQ020J30R

Overview

STLQ020J30R from STMicroelectronics is a 3.0 V fixed-output, 200 mA ultra-low-quiescent-current LDO voltage regulator in Flip-Chip4 package, operating from 2 V to 5.5 V input, delivering 160 mV dropout at full load and 300 nA typical quiescent current at no load - designed for battery-powered image sensors and wearable healthcare devices requiring multi-year standby life.

For engineers reviewing the STLQ020J30R datasheet, STLQ020J30R pinout, STLQ020J30R application, or STLQ020J30R equivalent, key selection criteria include its 3% output accuracy over –40 °C to +125 °C, logic-controlled shutdown (5 nA off-state), integrated thermal/overcurrent protection, and support for 1 µF ceramic input/output capacitors without external compensation.

Technical Context

The STLQ020J30R employs an adaptive biasing circuit that maintains ultra-low I_q while enabling fast transient response and 52 dB PSRR at 100 Hz (V_OUT = 2.5 V, 10 mA load). Its internal bandgap reference and CMOS-compatible enable input (VEN low = 0.4 V max, high = 1.2 V min) allow precise on/off control without pull-up resistors.

Dropout behavior is actively managed: quiescent current remains controlled even in dropout (VIN < V_OUT + V_DROP), and thermal shutdown activates at 160 °C with 20 °C hysteresis only when load exceeds 1 mA - ensuring reliability in thermally constrained wearables and metering enclosures.

Key Specifications

Pinout & Package

STLQ020J30R uses the Flip-Chip4 package (0.773 mm × 0.773 mm, 0.26 mm height), featuring solder bumps on bottom side for direct die-to-PCB interconnect and an exposed thermal pad requiring GND connection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with STLQ020J30R, XC6210B302MR-G offers higher current headroom but occupies 3× more PCB area, while RT9013-30GB trades 8× higher no-load I_q for lower unit cost - making STLQ020J30R optimal for miniaturized, long-life medical and imaging systems.

Availability

STLQ020J30R is available at Aetrix Electronics and suitable for smartphone image sensor power, wearable ECG front-end biasing, and portable gas meter reference applications requiring stable component supply, guaranteed long-term sourcing, and full traceability.

Supply support for STLQ020J30R 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog chips for industrial, automotive, and consumer markets.

The STLQ020 series belongs to ST's ultra-low-I_q LDO product line, engineered specifically for energy-harvesting and battery-powered edge devices where multi-year operational lifetime and thermal efficiency in confined spaces are primary design constraints.

FAQ

What is the minimum input voltage required for STLQ020J30R to maintain 3.0 V output at 200 mA?

The minimum input is 3.16 V, calculated as V_OUT + V_DROP = 3.0 V + 0.16 V. Below this, the device enters dropout and output voltage declines linearly with input. The 2 V absolute minimum rating applies only to non-regulating states (e.g., shutdown or no-load).

Can STLQ020J30R be used with ceramic capacitors smaller than 1 µF?

No - the datasheet mandates ≥1 µF low-ESR ceramic capacitors on both input and output for guaranteed stability. Using smaller values risks oscillation or load-transient overshoot, as the control loop is optimized for ≥1 µF capacitance and 3–500 mΩ ESR.

Is the exposed thermal pad on the Flip-Chip4 package electrically connected?

Yes - the exposed pad is internally connected to GND and must be soldered to a PCB GND plane using ≥4 thermal vias. Leaving it unconnected degrades thermal resistance by >100 °C/W and violates absolute maximum ratings for junction temperature.

Does STLQ020J30R support remote sensing of the output voltage?

No - the STLQ020J30R is a fixed-output variant. Remote sensing is only available on adjustable versions (e.g., STLQ020PUR) with ADJ pin, which use external resistor dividers. This part has NC on pin 4 and no internal feedback divider tap.