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Diodes Incorporated ZXCL300H5TA
- Part No.:
- ZXCL300H5TA
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
ZXCL300H5TA.pdf
- Description:
- IC REG LINEAR 3V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,418
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Product details
Overview
ZXCL300H5TA from Diodes Incorporated is a 3.0V fixed-output, micropower low-dropout linear regulator in SC70-5/SOT353 package, featuring 85mV dropout at 50mA load, 50µA ground current at 150mA, and active-high enable control with <10nA shutdown current. It delivers stable regulation for space-constrained battery-powered systems such as handheld instruments and portable cameras.
For engineers reviewing the ZXCL300H5TA datasheet, ZXCL300H5TA pinout, ZXCL300H5TA application, or ZXCL300H5TA equivalent, key selection criteria include ultra-low quiescent current, no-load stability, SC70-5 footprint compatibility, and thermal/overcurrent protection - all critical for energy-sensitive embedded designs.
Technical Context
The ZXCL300H5TA uses a PMOS pass transistor architecture enabling low dropout voltage proportional to load current and maintaining regulation down to VIN = VOUT + 0.5V. Its internal bandgap reference (1.25V) and error amplifier provide ±2% output voltage accuracy over temperature and line/load variations.
It integrates TTL/CMOS-compatible enable logic with 150mV hysteresis, thermal shutdown activation at 125°C, and current limiting with typical 230mA trip point. The device operates stably with 1µF ceramic output capacitors and exhibits 50µVRMS output noise (10Hz–100kHz) without bypass capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0V ±2% - tightly regulated nominal rail for logic and analog subsystems |
| Dropout Voltage | 85mV at 50mA - enables operation with minimal input–output differential, extending battery life |
| Ground Current | 50µA at 150mA load - ultra-low quiescent consumption preserves battery capacity in standby |
| Shutdown Current | <10nA - near-zero power draw during system sleep modes |
| Enable Threshold | VENH = 2.2V min, VENL = 0.8V max - compatible with 3.3V and 5V logic families |
| Thermal Shutdown | 125°C activation - self-protecting under sustained overload or high ambient conditions |
| Output Stability | No-load stable with ≥1µF ceramic capacitor - eliminates need for minimum load resistor |
Pinout & Package
SC70-5/SOT353 (H5) package: 1.3mm × 2.1mm × 0.95mm body, 0.65mm pitch, surface-mount, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 2.0V–5.5V input; must exceed VOUT + 0.5V for regulation |
| GND | Power ground reference | Low-impedance return path for load and bias currents; critical for noise performance |
| EN | Active-high enable input | Drives internal regulator circuitry; <0.8V disables output, >2.2V enables normal operation |
| N/C | No connection | Must be left open or tied to GND (not VIN); floating or misconnected may cause instability |
| VO | Regulated output terminal | Delivers 3.0V ±2% to load; requires ≥1µF ceramic capacitor for stability across full operating range |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 85mV @ 50mA enables use with depleting Li-ion cells (down to ~3.05V input) |
| Micropower operation | 50µA ground current at full 150mA load minimizes battery drain in active mode |
| No-load stability | Regulates reliably with zero load - essential for CMOS RAM backup and sensor wake-up circuits |
| Low-noise output | 50µVRMS (10Hz–100kHz) without external bypass - suitable for ADC references and RF front-ends |
| Integrated protection | Thermal shutdown and current limit prevent damage during fault conditions without external components |
Applications
| Handheld Medical Instrument | Wireless Sensor Node |
|---|---|
|
Use Scenario: Portable blood glucose meter with LCD, microcontroller, and electrochemical sensor requiring clean 3.0V rail during intermittent measurement cycles. IC Role / Device Role / Timing Role: Primary LDO supplying MCU core and analog front-end; enables fast wake-from-sleep with <10µs start-up time. Use Value: 50µA quiescent current extends battery life to >12 months on coin cell; no-load stability avoids need for dummy load. |
Use Scenario: Battery-powered Zigbee node monitoring temperature/humidity, transmitting data every 5 minutes. IC Role / Device Role / Timing Role: Power management IC delivering regulated 3.0V to RF transceiver and MCU during brief active bursts. Use Value: 85mV dropout allows operation until battery reaches 3.05V; <10nA shutdown current ensures multi-year shelf life. |
| Digital Camera Module | Industrial Handheld Scanner |
|
Use Scenario: Compact camera module in barcode scanner with image sensor, ISP, and flash LED driver sharing 3.0V supply. IC Role / Device Role / Timing Role: Low-noise voltage source for analog signal chain; decoupled via 2.2µF ceramic capacitor per datasheet recommendation. Use Value: 50µVRMS noise prevents quantization errors in 12-bit image processing; SC70-5 footprint saves PCB area. |
Use Scenario: Ruggedized industrial scanner using ARM Cortex-M4 MCU, laser diode driver, and serial interface. IC Role / Device Role / Timing Role: System-level LDO providing stable 3.0V to MCU and peripherals; enabled only during scan trigger event. Use Value: Active-high EN pin synchronizes power delivery with host command; thermal shutdown protects against enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7115-30SEG-7 | 3.0V output, 300mA IOUT, 250mV dropout @ 300mA, SOT23-5 package | Higher output current but larger footprint and higher quiescent current (1.2µA vs. 50µA) | Select when >150mA load or higher thermal margin required; not suitable for ultra-low-power sleep states |
| AP2125KS-3.0TRG1 | 3.0V output, 300mA IOUT, 220mV dropout @ 300mA, SOT23-5 package, 65µA IQ | Similar IQ but higher dropout and larger package; lacks no-load stability guarantee | Prefer for cost-sensitive designs where SC70-5 size is not mandatory and 1µA standby is acceptable |
Compared with ZXCL300H5TA, AP7115-30SEG-7 offers higher current headroom at the expense of quiescent current and board area, while AP2125KS-3.0TRG1 trades off dropout and no-load stability for broader availability - making ZXCL300H5TA optimal for space- and energy-critical legacy designs.
Availability
ZXCL300H5TA is available at Aetrix Electronics and suitable for handheld medical instruments, wireless sensor nodes, digital camera modules, and industrial handheld scanners requiring stable component supply with long-term lifecycle support.
Supply support for ZXCL300H5TA 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 high-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The ZXCL series was designed specifically for space-constrained, battery-powered applications demanding micropower operation, ultra-small packaging, and robust performance across temperature and load extremes.
FAQ
What is the minimum input voltage required for regulation at 3.0V output?
The ZXCL300H5TA requires VIN > VOUT + 0.5V for normal regulation, meaning minimum input is 3.5V. However, output begins rising at ~1.3V VIN, and the device remains functional down to 2.0V VIN with reduced headroom - verified by absolute maximum ratings and recommended operating conditions in DS33439 Rev. 10-3.
Can the N/C pin be connected to GND or left floating?
The N/C pin (Pin 4) must be left open-circuit or connected to GND per datasheet Pin Descriptions. Connecting it to VIN or other signals risks instability or malfunction. Diodes Incorporated explicitly states "Should be left open circuit or connected to pin 3" - and pin 3 is EN, not GND - but subsequent context confirms GND is safe and preferred over VIN.
Is an input capacitor required for stable operation?
Yes - a 1µF ceramic or tantalum input capacitor is recommended to filter supply noise and improve ripple rejection, as specified in the Capacitor Selection section of DS33439. Omitting it may degrade PSRR and transient response, especially with noisy or long-trace power sources.
Does ZXCL300H5TA support reverse-voltage protection?
No - the device contains an inherent body diode from VO to VIN that conducts if VOUT exceeds VIN by >0.6V. This can cause backfeed and potential damage. An external Schottky diode is recommended for reverse-polarity or forced-VOUT > VIN conditions, as detailed in Application Information section of DS33439.
ZXCL300H5TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.28V @ 100mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- 120 µA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
ZXCL300H5TA FAQ
1.How can I place an order for ZXCL300H5TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXCL300H5TA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ZXCL300H5TA reliable?
The price and inventory of ZXCL300H5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCL300H5TA is usually 5 days.
3.What payment methods are accepted for ZXCL300H5TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCL300H5TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXCL300H5TA?
ZXCL300H5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXCL300H5TA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ZXCL300H5TA?
For technical support, including ZXCL300H5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCL300H5TA requirements.
6.How does Aetrix verify that ZXCL300H5TA is sourced from the original manufacturer or authorized distributors?
All ZXCL300H5TA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ZXCL300H5TA meets industry standards.
7.What is the process for return or replacement of ZXCL300H5TA?
All ZXCL300H5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXCL300H5TA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ZXCL300H5TA part is unused and in its original packaging.
Return procedure for ZXCL300H5TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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