STMicroelectronics LD56020J110R

Overview

LD56020J110R from STMicroelectronics is a high-accuracy, ultra-low-noise low-dropout (LDO) voltage regulator delivering 200 mA output current with 1.1 V fixed output voltage in Flip-chip4 (0.65 × 0.65 mm²) package. It features 190 mV max dropout at 200 mA, ±2% output tolerance over temperature, and 8.8 µVRMS noise (10 Hz–100 kHz), targeting power-sensitive RF and imaging circuits.

For engineers reviewing the LD56020J110R datasheet, LD56020J110R pinout, LD56020J110R application, or LD56020J110R equivalent, key selection criteria include input voltage range (1.1–5.5 V), enable-controlled shutdown (<0.1 µA off-state current), active output discharge, thermal shutdown (160 °C), and compatibility with 0.7–1 µF ceramic input/output capacitors.

Technical Context

The LD56020J110R employs a PMOS pass transistor architecture enabling ultra-low dropout and near-zero quiescent current dependency on load. Its internal bandgap reference and error amplifier deliver ±2% output accuracy across –40 °C to 125 °C junction temperature, with line regulation of 0.01–0.1 %/V and load regulation ≤5 mV (CSP) or ≤20 mV (SOT23-5L) over 1–200 mA.

It integrates logic-controlled enable (VEN low = shutdown, internal 1 MΩ pull-down), active output discharge during disable, short-circuit foldback limiting (ISC ≈100 mA), and thermal shutdown with 20 °C hysteresis. The device is stable with 0.7–1 µF ceramic capacitors and supports 50 mV output voltage steps (0.6–4.0 V) in custom configurations.

Key Specifications

Pinout & Package

LD56020J110R is packaged in Flip-chip4 (0.65 × 0.65 mm², 0.41 mm typical height), requiring solder connection of the exposed pad to GND for thermal and electrical integrity. This ultra-compact package targets space-constrained mobile and wearable applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6210B112MR-G and RT9080AL-11PU5, LD56020J110R delivers the smallest footprint (0.65 × 0.65 mm²), lowest noise (8.8 µVRMS), and integrated active discharge-making it optimal for space- and noise-constrained mobile RF and imaging subsystems.

Availability

LD56020J110R is available at Aetrix Electronics and suitable for smartphone camera modules, VCO power supplies, wearable health sensors, and low-power IoT edge nodes requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for LD56020J110R 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, analog chips, and MEMS sensors for automotive, industrial, and consumer markets.

LD56020 belongs to ST's ultra-low-noise LDO family targeting battery-powered portable electronics where power integrity, miniaturization, and thermal efficiency are critical design constraints.

FAQ

What is the minimum input voltage required for LD56020J110R to regulate 1.1 V output at 200 mA?

The maximum dropout voltage is 190 mV at 200 mA load and 125 °C junction temperature. Therefore, minimum valid input is 1.1 V + 0.19 V = 1.29 V. Operation below this causes output collapse or unregulated behavior, confirmed in Table 4 dropout specifications and Figure 10.

Can LD56020J110R be used with 0.47 µF output capacitors?

No - ST specifies 0.7–1 µF minimum COUT in Table 5. Using 0.47 µF risks instability, as verified by stability plane analysis in Figure 23 and application note AN4422. Deviation may cause oscillation or excessive overshoot during load transients.

Is the NC pin on LD56020J110R required to be grounded?

No - the NC pin is not internally connected (Table 1). It may be left floating or tied to GND per PCB routing convenience, but grounding provides no functional benefit and is not required for thermal or electrical performance.

Does LD56020J110R support adjustable output voltages?

No - LD56020J110R is factory-trimmed to fixed 1.1 V output. Adjustable versions (e.g., LD56020JxxxA) exist but require external feedback resistors and are not offered in the J110R marking. Output voltage steps (50 mV) are only available via custom order codes per Table 9.