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Diodes Incorporated ZXSC410E6TA
- Part No.:
- ZXSC410E6TA
- Manufacturer:
- Diodes Incorporated
- Category:
- DC DC Switching Controllers
- Package:
- SOT-23-6
- Datasheet:
-
ZXSC410E6TA.pdf
- Description:
- IC REG CTRLR BOOST SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:37,412
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Product details
Overview
ZXSC410E6TA from Diodes Incorporated is a DC-DC boost switching controller in SOT26 package, designed to drive external NPN transistors for voltage step-up conversion. It operates from 1.65V–8V input, delivers up to 300mA output current, maintains ±1% output regulation via 300mV internal feedback reference, and supports shutdown control with 4.5µA typical quiescent current - used in battery-powered LCD bias and high-brightness LED driving.
For engineers reviewing the ZXSC410E6TA datasheet, ZXSC410E6TA pinout, ZXSC410E6TA application, or ZXSC410E6TA equivalent, key selection criteria include its external transistor drive capability, 28mV current-sense threshold, 300mV VFB reference, shutdown functionality, and compatibility with low-VCE(SAT) Zetex bipolar transistors in portable power systems.
Technical Context
The ZXSC410E6TA implements a fixed-frequency (≈200kHz) current-mode boost controller using two comparators: one monitors inductor current via a 28mV sense threshold at the SENSE pin, the other regulates output voltage via a 300mV reference at VFB. Drive output delivers up to 5mA peak current with 0–(VCC−0.4V) swing to switch external NPN transistors.
It features a retriggerable monostable timing circuit that enforces a 2µs minimum off-time and initiates new charge cycles based on sensed current and feedback error. Shutdown control (STDN pin) disables drive output and reduces supply current to 4.5µA, enabling PWM dimming in LED applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 1.65V to 8V - supports single Li-Ion (2.5–4.2V) and 2–3 alkaline/NiMH cells without LDO pre-regulation. |
| Feedback Reference | 300mV ±3% - sets regulated output voltage via external resistor divider; enables precise adjustable voltage or constant-current LED operation. |
| Sense Threshold | 28mV typ - determines peak inductor current; allows accurate current limiting with low-power sense resistors (e.g., 0.1Ω yields 280mA IPK). |
| Drive Output | 0 to VCC−0.4V, 3.4mA typ - directly drives base of high-gain NPN transistors (e.g., ZXTN25012EFH) without external buffer. |
| Shutdown Current | 4.5µA typ - enables ultra-low-power sleep mode; STDN pin accepts logic-level or open-drain control signals. |
| Efficiency | 85% typ at 50–300mA - achieved using external low-VCE(SAT) transistor and Schottky rectifier (e.g., ZHCS2000). |
| Operating Frequency | ≈200kHz - balances inductor size, EMI, and efficiency; fixed by internal timing circuit, not user-adjustable. |
Pinout & Package
Package: SOT26 (6-pin, surface-mount, lead-free, RoHS-compliant). Pin assignments are validated per DS33618 Rev. 6-2 (Diodes Inc., Aug 2015).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DRIVE (Pin 6) | Transistor gate/base driver output | Active-high current source (up to 5mA) with fast discharge pulse; connects directly to NPN base or MOSFET gate. |
| VFB (Pin 5) | Feedback voltage input | Compares against 300mV internal reference; external resistor divider sets output voltage or LED current. |
| SENSE (Pin 4) | Current-sense comparator input | Detects voltage across external sense resistor; triggers switch-off when ≥28mV - defines peak inductor current. |
| VCC (Pin 1) | Power supply input | Accepts 1.65–8V; powers internal bandgap reference, comparators, and drive stage; bypass capacitor required. |
| GND (Pin 2) | Ground reference | Analog and power ground; must be low-impedance connection near sense resistor and input capacitor. |
| STDN (Pin 3) | Shutdown enable input | High-impedance (1µA) control pin; <0.7V disables regulator and reduces IQ to 4.5µA; >1V enables operation. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output regulation | Supports both voltage regulation (via VFB divider) and constant-current LED driving (via single RLED to GND), using same 300mV reference. |
| External transistor flexibility | Drives discrete NPN or MOSFET switches - enables optimization for high-voltage boost (>15V) or high-current (>300mA) designs beyond integrated solutions. |
| PWM dimming interface | STDN pin accepts 120Hz+ PWM signal; LED brightness scales linearly with duty cycle - no additional IC or microcontroller needed. |
| Thermal-stable bandgap reference | 0.005%/°C tempco on 300mV VFB ensures consistent regulation across −40°C to +85°C ambient range. |
| Low-noise current sensing | 28mV sense threshold with −15µA max input bias current minimizes error from resistor self-heating and trace parasitics. |
Applications
| Portable LCD Bias Supply | White LED Backlight Driver |
|---|---|
|
Use Scenario: Powering AVDD and VON rails in TFT-LCD modules from single-cell Li-ion battery (2.5–4.2V). IC Role / Device Role / Timing Role: Boost controller generating stable 5V/12V outputs with sequencing control via external RC delay networks. Use Value: Eliminates need for multiple LDOs or dedicated bias ICs; achieves >85% efficiency at 50mA load while maintaining ±1% output accuracy. |
Use Scenario: Driving 3–4 series white LEDs (9–12V forward) from 2.7–4.2V battery in handheld medical or industrial displays. IC Role / Device Role / Timing Role: Constant-current boost controller with analog/PWM dimming support via STDN pin or VFB modulation. Use Value: Enables flicker-free 10–100% brightness control using simple MCU GPIO; maintains LED current stability within ±3% over battery discharge. |
| Battery-Powered Sensor Node Power | Low-Cost Photoflash Charging Circuit |
|
Use Scenario: Providing regulated 3.3V rail for ultra-low-power microcontrollers and RF transceivers in wireless sensor nodes. IC Role / Device Role / Timing Role: High-efficiency boost converter operating down to 1.65V input; synchronized shutdown during sleep modes. Use Value: Extends battery life by reducing quiescent current to 4.5µA in shutdown; supports intermittent wake-up bursts up to 300mA peak load. |
Use Scenario: Charging high-voltage flash capacitors (300V) in compact camera modules using transformer-based topology. IC Role / Device Role / Timing Role: Controller initiating charge cycle via STDN and signaling full charge via external comparator monitoring EOR-equivalent flag (ZXSC440 variant). Use Value: Enables safe end-of-charge detection without secondary sensing IC; leverages internal 28mV current sense for precise transformer primary current control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17064ETA+ | Integrated MOSFET (3A), fixed 5V output, no external transistor drive; requires different layout and lacks STDN dimming. | Best for space-constrained 5V-only systems where external transistor optimization is unnecessary. | Select MAX17064 only if fixed-output, higher-current, and smaller footprint outweigh flexibility and dimming needs. |
| TPS61040DRVR | Integrated 500mA switch, 28V max output, but no shutdown-controlled dimming; uses 1.24V feedback reference instead of 300mV. | Suitable for general-purpose boost where LED current programming via VFB is not required. | Choose TPS61040 when higher integration and wider VIN range (1.8–6V) are prioritized over analog dimming and low-VIN start-up (1.65V). |
Compared with MAX17064ETA+ and TPS61040DRVR, ZXSC410E6TA offers superior design flexibility through external transistor selection, native 300mV reference for direct LED current setting, and true shutdown-based PWM dimming - critical for battery-sensitive portable lighting and display systems.
Availability
ZXSC410E6TA is available at Aetrix Electronics and suitable for portable LCD bias supplies, white LED backlight drivers, battery-powered sensor node power, and low-cost photoflash charging circuits requiring stable component supply and long-term manufacturability.
Supply support for ZXSC410E6TA 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-performance, energy-efficient components for consumer, industrial, and automotive markets.
The ZXSC410E6TA belongs to Diodes' Zetex precision analog controller product line, engineered specifically for low-input-voltage, high-efficiency boost conversion in battery-powered portable electronics.
FAQ
What external transistor types are recommended for use with ZXSC410E6TA?
Diodes recommends high-gain, low-VCE(SAT) NPN transistors such as ZXTN25012EFH (SOT23) or ZXTN2010ZTA (SOT89), rated for VCEO ≥20V and hFE >100 at 100mA. These ensure efficient switching with minimal base drive loss and thermal rise under 300mA peak inductor current conditions.
Can ZXSC410E6TA regulate output current directly for LED driving?
Yes - connecting a single resistor (RLED) between VFB and LED cathode (or GND) configures the device as a constant-current source. With VFB = 300mV, LED current equals 300mV/RLED. For example, RLED = 10Ω yields 30mA; accuracy remains within ±3% across temperature due to low VFB tempco (0.005%/°C).
How does the 28mV current-sense threshold affect design of the sense resistor?
The 28mV threshold defines peak inductor current: IPK = 28mV / RSENSE. For 300mA IPK, RSENSE = 93mΩ. Use low-tempco, surface-mount metal-film or current-sense resistors (e.g., Vishay WSLP series) with ≤0.5W derated power rating to avoid drift and thermal error in portable applications.
Is ZXSC410E6TA compatible with lithium primary batteries (e.g., CR2032)?
Yes - its 1.65V minimum VCC allows operation down to near-end-of-life voltage of CR2032 (≈2.0V under load), supporting long-life applications like real-time clocks or memory backup. Combined with 4.5µA shutdown current, it extends usable battery capacity significantly versus higher-IQ alternatives.
ZXSC410E6TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 8V
- Frequency - Switching:
- 200kHz
- Duty Cycle (Max):
- 85%
- Synchronous Rectifier:
- No
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Enable
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
ZXSC410E6TA FAQ
1.How can I place an order for ZXSC410E6TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXSC410E6TA 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 ZXSC410E6TA reliable?
The price and inventory of ZXSC410E6TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXSC410E6TA is usually 5 days.
3.What payment methods are accepted for ZXSC410E6TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXSC410E6TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXSC410E6TA?
ZXSC410E6TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXSC410E6TA 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 ZXSC410E6TA?
For technical support, including ZXSC410E6TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXSC410E6TA requirements.
6.How does Aetrix verify that ZXSC410E6TA is sourced from the original manufacturer or authorized distributors?
All ZXSC410E6TA 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 ZXSC410E6TA meets industry standards.
7.What is the process for return or replacement of ZXSC410E6TA?
All ZXSC410E6TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXSC410E6TA, 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 ZXSC410E6TA part is unused and in its original packaging.
Return procedure for ZXSC410E6TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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