Diodes Incorporated ZXCL5213V26H5TA

Overview

ZXCL5213V26H5TA from Diodes Incorporated is a micropower low-dropout linear regulator delivering a fixed 2.6 V output with 85 mV dropout at 50 mA, 50 µA ground current at 150 mA load, and active-high enable control in SC70-5/SOT353 package - designed for space-constrained battery-powered systems such as handheld instruments and portable audio devices.

For engineers reviewing the ZXCL5213V26H5TA datasheet, ZXCL5213V26H5TA pinout, ZXCL5213V26H5TA application, or ZXCL5213V26H5TA equivalent, key selection criteria include ultra-low quiescent current (≤50 µA), no-load stability, thermal shutdown (125 °C), EN logic compatibility (2.2–10 V high, 0–0.8 V low), and SC70-5 footprint compatibility with tight PCB area budgets.

Technical Context

The ZXCL5213V26H5TA employs a PMOS pass transistor architecture enabling low dropout and minimal ground current across load conditions, including dropout and startup. Its internal bandgap reference (1.25 V) and error amplifier drive a buffer stage to regulate VO with ±3% output voltage accuracy over temperature and line/load variations.

Enable functionality uses TTL/CMOS-compatible input with 150 mV hysteresis and <10 nA shutdown current; thermal overload protection cycles the output above 125 °C junction temperature, while overcurrent limiting activates between 160 mA and 800 mA depending on conditions.

Key Specifications

Pinout & Package

SC70-5/SOT353 (H5) package: 1.3 mm × 1.8 mm footprint, 0.65 mm pitch, 0.95 mm height - optimized for ultra-dense portable PCBs.

Key Features

Applications

Availability

ZXCL5213V26H5TA is available at Aetrix Electronics and suitable for handheld medical instruments, wireless sensor nodes, PCMCIA peripherals, and portable audio DACs requiring stable component supply with long-term lifecycle support.

Supply support for ZXCL5213V26H5TA 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for high-volume industrial and consumer applications.

The ZXCL series belongs to Diodes' micropower LDO product line, engineered specifically for space- and energy-constrained portable electronics where ultra-small footprint, sub-100 µA quiescent current, and no-load stability are mandatory.

FAQ

What is the minimum input voltage required for regulation at 2.6 V output?

The datasheet specifies VIN(min) > VOUT(nom) + 0.5 V for normal operation, so minimum input is 3.1 V. However, output begins rising at ~1.3 V VIN, and regulation starts once VIN exceeds VO by sufficient margin to maintain dropout headroom - e.g., 2.685 V at 50 mA load given 85 mV dropout.

Can ZXCL5213V26H5TA operate without an output capacitor?

No - an output capacitor ≥1 µF (ceramic, X7R dielectric) is required for stability across the full operating range, including no-load and full-load conditions. The device is not internally compensated for capacitor-less operation, and omitting CO risks oscillation or poor transient response.

Is the N/C pin electrically isolated or internally connected?

Pin 4 (N/C) is unconnected internally and must be left open-circuit or tied to GND per the datasheet. It is not bonded to any die structure and serves no functional purpose - connecting it to other voltages may cause unpredictable behavior or damage.

Does this part have reverse-voltage protection on the output?

No - the device contains an inherent body diode (anode to VO, cathode to VIN) that conducts if VO exceeds VIN by >0.6 V. This can cause backfeed or damage; external Schottky diode protection is recommended in applications where output may be driven independently, such as hot-swap or backup power scenarios.