STMicroelectronics LD56020J120R

Overview

LD56020J120R from STMicroelectronics is a 1.2 V, 200 mA ultra-low-noise LDO voltage regulator in Flip-chip4 (0.65 × 0.65 mm²) package, featuring 190 mV max dropout at full load, ±2% output accuracy over temperature, and 8.8 µVRMS noise (10 Hz–100 kHz). It delivers stable power to noise-sensitive RF modules and image sensors in space-constrained portable devices.

For engineers reviewing the LD56020J120R datasheet, LD56020J120R pinout, LD56020J120R application, or LD56020J120R equivalent, key selection criteria include ultra-low dropout under 200 mA load, sub-20 µA quiescent current at no load, logic-controlled shutdown with <0.1 µA off-state current, and compatibility with 0.7–1 µF ceramic input/output capacitors.

Technical Context

The LD56020J120R employs a PMOS pass transistor architecture enabling ultra-low dropout and near-zero reverse current during shutdown. Its internal bandgap reference and error amplifier maintain ±2% output regulation across –40 °C to 125 °C junction temperature.

It integrates thermal shutdown (160 °C trip, 20 °C hysteresis), short-circuit foldback limiting (100 mA typical ISC), and active output discharge via internal NMOS switch-enabling rapid VOUT ramp-down when disabled. The EN pin features an internal 1 MΩ pull-down for default-off operation.

Key Specifications

Pinout & Package

LD56020J120R is packaged in Flip-chip4 (0.65 × 0.65 mm², 0.41 mm typical height), with an exposed die pad requiring connection to GND for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6210B122MR-G and RT9080AL-12PU5, LD56020J120R offers the smallest footprint (0.42 mm²), lowest dropout (190 mV), and integrated active discharge-making it optimal for miniaturized, battery-sensitive RF and imaging applications where board area and transient behavior are constrained.

Availability

LD56020J120R is available at Aetrix Electronics and suitable for smartphone camera modules, 5G mmWave front-ends, and wearable biometric sensors requiring stable component supply with guaranteed long-term availability.

Supply support for LD56020J120R 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.

LD56020 belongs to ST's ultra-low-noise, low-dropout LDO family targeting battery-powered portable electronics-specifically engineered to replace legacy regulators in space- and noise-constrained RF and imaging subsystems.

FAQ

What is the minimum input voltage required for LD56020J120R to regulate 1.2 V at 200 mA?

The minimum input voltage is determined by dropout: VIN(MIN) = VOUT + VDROP = 1.2 V + 0.19 V = 1.39 V. At 200 mA load and TJ = 25 °C, typical dropout is 110–140 mV, but design must accommodate 190 mV maximum across temperature and process variation.

Can LD56020J120R be used with ceramic capacitors smaller than 1 µF?

Yes-ST specifies minimum CIN and COUT as 0.7 µF. The device remains stable with 0.7–1 µF X5R/X7R ceramics (5–500 mΩ ESR). Using <0.7 µF risks instability; larger values (up to 10 µF) are acceptable but offer diminishing returns on transient response.

Does LD56020J120R require an external resistor on the EN pin?

No. The EN pin has an internal 1 MΩ pull-down resistor, ensuring reliable OFF-state at power-up. An external pull-down is unnecessary; an external pull-up to VIN or logic rail is only needed if the host controller cannot actively drive EN high.

Is the exposed 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 for both thermal dissipation (RθJA = 210 °C/W) and electrical stability. Omitting this connection degrades thermal performance and may cause regulation drift or oscillation.