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Diodes Incorporated ZXCL300E5TA
- Part No.:
- ZXCL300E5TA
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ZXCL300E5TA.pdf
- Description:
- IC REG LINEAR 3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,263
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Product details
Overview
ZXCL300E5TA from Diodes Incorporated is a 3.0V fixed-output, micropower low-dropout linear regulator in SOT25 (5-pin) package, featuring 85mV dropout at 50mA, 50µA ground current at full 150mA load, and active-high TTL/CMOS-compatible enable control. It delivers stable regulation for battery-powered portable electronics requiring ultra-low quiescent current and no-load stability.
For engineers reviewing the ZXCL300E5TA datasheet, ZXCL300E5TA pinout, ZXCL300E5TA application, or ZXCL300E5TA equivalent, key selection criteria include dropout voltage under load, shutdown current (<1µA), thermal overload protection (125°C trip), output noise performance (50µVRMS), and compatibility with 1µF ceramic output capacitors without external compensation.
Technical Context
The ZXCL300E5TA employs a PMOS pass transistor architecture enabling low dropout and minimal ground current across operating conditions-including startup, dropout, and full load. Its bandgap reference and error amplifier deliver ±2% output voltage accuracy over temperature and line/load variations.
It integrates logic-level enable control with 150mV hysteresis, thermal shutdown (125°C activation), and current limiting (160–800mA range). The device operates stably with 1µF ceramic output capacitors (X7R dielectric recommended) and requires no bypass capacitor for low-noise operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0V ±2% - tightly regulated nominal output for powering 3.3V-tolerant logic rails or analog subsystems |
| Dropout Voltage | 85mV at 50mA - enables operation with VIN as low as 3.085V while maintaining regulation |
| Ground Current | 50µA at 150mA load - minimizes total system power draw in high-current battery modes |
| Shutdown Current | 1µA max - ensures near-zero battery drain during system sleep states |
| Enable Threshold | VENH = 2.2V min, VENL = 0.8V max - compatible with 3.3V and 5V logic without level-shifting |
| PSRR | 70dB @ 1kHz - suppresses supply ripple from noisy DC-DC converters feeding the LDO input |
| Output Noise | 50µVRMS (10Hz–100kHz) - suitable for noise-sensitive analog circuits without external bypass |
Pinout & Package
SOT25 (5-pin) package: 2.8mm × 1.6mm × 1.1mm body, gull-wing leads, JEDEC standard footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Supply | Primary power input; accepts 2.0V to 5.5V; internal diode anode connects to VO |
| GND | Ground Reference | Power and signal return path; low-impedance connection critical for noise and stability |
| EN | Enable Control | Active-HIGH logic input; drives internal bias circuitry; no clamp diode to VIN |
| N/C | No Connection | Pin 2 is unconnected internally; must be left floating or tied to GND per layout guidelines |
| VO | Regulated Output | Stable 3.0V source; supports 150mA continuous; stable with ≥1µF X7R ceramic capacitor |
Key Features
| Feature | Design Value |
|---|---|
| No-load stability | Maintains regulation with zero output current-enables direct use in CMOS RAM backup circuits |
| Ultra-low noise | 50µVRMS without bypass capacitor-eliminates need for secondary filtering in audio/sensor paths |
| Thermal & current protection | Auto-cycling thermal shutdown (125°C) and wide-range current limit (160–800mA)-ensures robustness under fault conditions |
| Capacitor flexibility | Stable with 1µF ceramic (X7R), tantalum, or electrolytic-reduces BOM count and board space vs. legacy LDOs |
| Fast start-up delay control | RC network on EN pin enables precise power sequencing-supports multi-rail system timing requirements |
Applications
| Cellular Phone Power Management | Handheld Instrument Core Supply |
|---|---|
Use Scenario: Powers baseband processor I/O banks and RF front-end bias rails in compact GSM/UMTS handsets. IC Role / Device Role / Timing Role: Primary 3.0V LDO delivering clean, sequenced power with EN-controlled wake-up from deep sleep. Use Value: 50µA ground current extends talk time; 85mV dropout preserves battery runtime down to 3.085V cell voltage. |
Use Scenario: Supplies microcontroller core and precision ADC reference in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Low-noise, no-load-stable regulator for analog measurement subsystems requiring zero standby drain. Use Value: 50µVRMS output noise avoids signal corruption; 1µA shutdown current enables >1-year shelf life on coin-cell backup. |
| PC Card Interface Voltage | Digital Camera Sensor Bias |
Use Scenario: Generates 3.0V for PCMCIA/CardBus interface logic and hot-swap control circuitry. IC Role / Device Role / Timing Role: Enable-controlled LDO ensuring safe power ramp-up during card insertion and removal. Use Value: EN hysteresis prevents chatter during marginal supply transitions; thermal protection guards against connector short faults. |
Use Scenario: Provides stable 3.0V bias for CMOS image sensor analog front-end and timing controller. IC Role / Device Role / Timing Role: Low-ESR-capacitor-compatible regulator supporting fast load transients during frame capture bursts. Use Value: 1µF ceramic stability eliminates bulk capacitance; PSRR >70dB suppresses switching noise from adjacent DC-DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2121AK-3.0TRG1 | Same 3.0V output, 150mA rating, and SOT23-5 pinout; lower typical ground current (35µA @ 150mA) but higher dropout (120mV @ 50mA) | Better suited for ultra-low-IQ systems where dropout margin is >120mV; lacks no-load stability guarantee | Select when minimizing quiescent current dominates over dropout or no-load regulation requirements |
| AP7115-30SEG-7 | 3.0V output, 300mA rating, SOT23-5; includes foldback current limiting and tighter initial accuracy (±1%) but higher ground current (120µA @ 150mA) | Preferred for higher-current peripherals or where tighter output tolerance is required; not no-load stable | Choose when driving >150mA loads or needing ±1% output accuracy at expense of higher IQ and no-load instability |
Compared with ZXCL300E5TA, AP2121AK-3.0TRG1 offers lower ground current but sacrifices dropout and no-load stability, while AP7115-30SEG-7 provides higher current and tighter accuracy at the cost of significantly higher quiescent consumption and loss of no-load regulation capability.
Availability
ZXCL300E5TA is available at Aetrix Electronics and suitable for cellular phones, handheld instruments, PC cards, and digital cameras requiring stable component supply with long-lifecycle support and traceable sourcing.
Supply support for ZXCL300E5TA 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-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The ZXCL series was designed specifically for space-constrained, battery-powered portable electronics demanding micropower operation, ultra-small packaging (SC70-5/SOT25), and guaranteed no-load stability-addressing limitations of earlier SOT23-based LDOs.
FAQ
What is the minimum input voltage required for ZXCL300E5TA to maintain 3.0V regulation?
The minimum input voltage is defined by dropout: VIN(min) = VOUT + VDO. At 50mA load, VDO = 85mV, so VIN must exceed 3.085V. Per datasheet Note 2, for reliable operation VIN should be ≥ VOUT + 0.5V = 3.5V to ensure margin across temperature, line, and load variation.
Can ZXCL300E5TA operate without an output capacitor?
No. Although the device is stable with no load, an output capacitor ≥1µF (X7R ceramic recommended) is mandatory for stability across the full 0–150mA load range and to meet transient response and noise specifications. Omitting it risks oscillation and output overshoot.
Is the N/C pin on ZXCL300E5TA electrically isolated or internally connected?
Pin 2 (N/C) is not connected to any internal circuitry. The datasheet explicitly states it "should be left open circuit or connected to pin 3" (GND). It is not a test pad or thermal pad-tying it to GND improves thermal conduction but does not affect electrical function.
Does ZXCL300E5TA support reverse current protection?
No built-in reverse current protection. An internal diode (anode to VO, cathode to VIN) conducts if VO exceeds VIN by >0.6V, allowing up to 5mA continuous reverse current. For applications prone to back-driving (e.g., hot-swap), an external Schottky diode in series with VIN is required.
ZXCL300E5TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- SOT-23-5
ZXCL300E5TA FAQ
1.How can I place an order for ZXCL300E5TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXCL300E5TA 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 ZXCL300E5TA reliable?
The price and inventory of ZXCL300E5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCL300E5TA is usually 5 days.
3.What payment methods are accepted for ZXCL300E5TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCL300E5TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXCL300E5TA?
ZXCL300E5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXCL300E5TA 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 ZXCL300E5TA?
For technical support, including ZXCL300E5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCL300E5TA requirements.
6.How does Aetrix verify that ZXCL300E5TA is sourced from the original manufacturer or authorized distributors?
All ZXCL300E5TA 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 ZXCL300E5TA meets industry standards.
7.What is the process for return or replacement of ZXCL300E5TA?
All ZXCL300E5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXCL300E5TA, 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 ZXCL300E5TA part is unused and in its original packaging.
Return procedure for ZXCL300E5TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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