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Toshiba Semiconductor and Storage TCK22893G,LF
- Part No.:
- TCK22893G,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 6-UFBGA, WLCSP
- Datasheet:
-
TCK22893G,LF.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 WCSP6E
- Quantity:
- Payment:
- Shipping:
Inventory:14,488
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Product details
Overview
TCK22893G,LF from Toshiba Electronic Devices & Storage Corporation is a load switch IC with over-current limiting function, designed for power management in space-constrained portable electronics. It delivers 1110 mA output current limit, 31 mΩ typical ON resistance at 5.0 V input, and ultra-low 25 μA quiescent current, enabling efficient power gating in cellular phone power rails.
For engineers reviewing the TCK22893G,LF datasheet, TCK22893G,LF pinout, TCK22893G,LF application, or TCK22893G,LF equivalent, key selection criteria include thermal shutdown behavior, output auto-discharge timing, inrush current control, and compatibility with 0.4 mm pitch WCSP6E PCB layouts.
Technical Context
The TCK22893G,LF integrates a single N-channel MOSFET power switch with fold-back over-current protection, thermal shutdown (trip at ~170°C, recovery at ~150°C), and active-high CONTROL logic with internal pull-down. It operates across 1.4–5.5 V input range and supports true reverse current blocking only in higher-tier variants-not in this part.
Its output auto-discharge function activates automatically upon CONTROL deactivation, discharging VOUT through an internal 100 Ω discharge path. The device lacks under-voltage lockout (UVLO) and true reverse current blocking circuits-features present in TCK229xxG/TCK2065G but explicitly marked "N/A" for TCK22893G in the Function Table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Limit | 1110 mA - sets maximum safe load current before fold-back limiting engages |
| ON Resistance | 31 mΩ (typ.) at VIN = 5.0 V - minimizes conduction loss and voltage drop in high-current paths |
| Quiescent Current | 25 μA (typ.) at VIN = 5.5 V - enables long battery life during standby in always-on subsystems |
| Input Voltage Range | 1.4 V to 5.5 V - supports Li-ion, Li-poly, and multi-rail PMIC outputs without level-shifting |
| Thermal Shutdown | ~170°C trip / ~150°C recovery - provides self-protecting operation under sustained overload or poor heatsinking |
| Output Auto-Discharge | Internal 100 Ω path - ensures rapid VOUT decay (<1 ms with 1 μF load) to prevent backfeeding or latch-up |
| Control Polarity | Active High - simplifies interface with standard GPIOs without inversion logic |
Pinout & Package
Supplied in ultra-compact WCSP6E package (0.8 mm × 1.2 mm, 0.55 mm height, 0.4 mm pitch), optimized for high-density mobile PCBs. Weight: 1 mg (typ.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (A1, B1) | Switched Output | Dual-source output pad reduces IR drop and improves current sharing for 1110 mA loads |
| VIN (A2, B2) | Power Input | Dual-source input pad enhances thermal dissipation and lowers parasitic inductance |
| GND (C1) | Ground Reference | Primary ground connection; requires low-impedance board plane coupling for stability |
| CONTROL (C2) | Enable Input | Active-high CMOS input with internal pull-down; remains OFF if left floating |
Key Features
| Feature | Design Value |
|---|---|
| Over-current limiting | Fixed 1110 mA fold-back threshold prevents damage during short-circuit or inrush events |
| Output auto-discharge | Integrated 100 Ω discharge path eliminates need for external bleeder resistor |
| Inrush current reduction | Controlled slew rate limits dV/dt at turn-on, suppressing supply rail droop and EMI |
| Thermal shutdown with hysteresis | 170°C trip / 150°C recovery avoids oscillation during marginal thermal conditions |
| Low quiescent current | 25 μA max in ON state enables use in always-on power domains without significant battery drain |
Applications
| Smartphone Subsystem Power Gating | Wearable Sensor Hub Supply Control |
|---|---|
Use Scenario: Isolating camera module or RF transceiver power rail during sleep mode to reduce system standby current. IC Role / Device Role / Timing Role: Load switch controlling power delivery with fast turn-off and auto-discharge to prevent backfeed into shared LDOs. Use Value: Enables sub-10 μA system sleep current by eliminating leakage paths and ensuring clean rail collapse. | Use Scenario: Enabling/disabling power to inertial measurement unit (IMU) or environmental sensor cluster based on motion detection. IC Role / Device Role / Timing Role: Low-quiescent, fast-response power gate synchronized with MCU wake-up signals. Use Value: Reduces average sensor subsystem power by >95% during idle while supporting <50 μs wake latency. |
| USB-C Peripheral Power Switching | Portable Medical Diagnostic Device Rail Control |
Use Scenario: Managing VBUS-powered accessories (e.g., USB audio dongles) with strict inrush and fault containment requirements. IC Role / Device Role / Timing Role: Fault-protected power switch with over-current limiting and thermal shutdown for unattended operation. Use Value: Prevents host port shutdown during plug-in surge and sustains operation up to 1110 mA continuous load. | Use Scenario: Sequencing power to analog front-end (AFE) and microcontroller in handheld ECG or pulse oximeter units. IC Role / Device Role / Timing Role: Precision-controlled power enable with auto-discharge to meet IEC 60601-1 patient isolation and reset timing requirements. Use Value: Guarantees full rail discharge within 1 ms after disable, satisfying safety-critical power-down validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCK2065G | Same 1110 mA current limit, but includes built-in true reverse current blocking and UVLO | Required where reverse current must be blocked regardless of switch state (e.g., dual-supply systems) | Select TCK2065G when reverse current blocking or UVLO is mandatory; TCK22893G,LF saves cost and board area where those features are unused |
| TCK22892G | 740 mA current limit, identical pinout/package, same feature set (no TRCB/UVLO) | Suitable for lower-power subsystems (e.g., Bluetooth LE radios) where 1110 mA headroom is unnecessary | Choose TCK22892G for designs with ≤740 mA peak load and tighter thermal budgets; pin-compatible upgrade path exists to TCK22893G,LF |
Compared with TCK2065G and TCK22892G, the TCK22893G,LF offers optimal balance of current capability and minimal feature set-reducing BOM cost and layout complexity where reverse blocking and UVLO are not required, while maintaining identical WCSP6E footprint and thermal performance.
Availability
TCK22893G,LF is available at Aetrix Electronics and suitable for smartphone subsystem power gating, wearable sensor hub supply control, and USB-C peripheral power switching requiring stable component supply and consistent WCSP6E packaging.
Supply support for TCK22893G,LF 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
Toshiba Electronic Devices & Storage Corporation designs and manufactures high-reliability semiconductor solutions for consumer, industrial, and automotive markets, with emphasis on power efficiency and miniaturization.
The TCK22xxxG series targets portable electronics power management, delivering ultra-small-footprint load switches with integrated protection for battery-powered devices where board area and quiescent power are critical constraints.
FAQ
What is the maximum continuous output current supported by the TCK22893G,LF?
The TCK22893G,LF supports a fixed over-current limit of 1110 mA. This is not a rating but a fold-back protection threshold-when load current exceeds this value, the device reduces output voltage to maintain safe power dissipation. Sustained operation near this limit requires careful thermal design per the 800 mW absolute maximum rating on FR4 boards.
Does the TCK22893G,LF include under-voltage lockout (UVLO) or true reverse current blocking?
No. According to Toshiba's Function Table, UVLO and true reverse current blocking are explicitly marked "N/A" for TCK22893G. These features are present in TCK229xxG and TCK2065G variants but omitted in TCK22893G,LF to reduce cost and complexity where they are not required.
What is the purpose of the dual VIN and dual VOUT pads on the TCK22893G,LF WCSP6E package?
The dual VIN (A2, B2) and dual VOUT (A1, B1) pads in the WCSP6E package reduce current density per bond, lower parasitic inductance, improve thermal spreading, and enhance reliability under 1110 mA continuous load. They are electrically common internally and must be connected to matching copper areas on PCB for optimal performance.
How does the output auto-discharge function operate in the TCK22893G,LF?
When the CONTROL pin is driven LOW or left floating, the TCK22893G,LF activates an internal 100 Ω discharge path between VOUT and GND. This discharges output capacitance rapidly-typically <1 ms with 1 μF load-ensuring no residual voltage remains to backfeed upstream circuitry or interfere with power sequencing.
What are the recommended input and output capacitor values for stable operation of the TCK22893G,LF?
Toshiba recommends ≥1.0 μF for both CIN and COUT, placed as close as possible to the VIN and VOUT pins respectively. These capacitors suppress voltage overshoot/undershoot during load transients and improve overall power supply stability-especially critical when driving capacitive or pulsed loads like RF modules or camera flash ICs.
TCK22893G,LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- 6-UFBGA, WLCSP
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 1.4V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 1.11A
- Rds On (Typ):
- 31mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge
- Fault Protection:
- Current Limiting (Fixed), Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WCSPE (0.80x1.2)
TCK22893G,LF FAQ
1.How can I place an order for TCK22893G,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCK22893G,LF 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 TCK22893G,LF reliable?
The price and inventory of TCK22893G,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCK22893G,LF is usually 5 days.
3.What payment methods are accepted for TCK22893G,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCK22893G,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCK22893G,LF?
TCK22893G,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCK22893G,LF 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 TCK22893G,LF?
For technical support, including TCK22893G,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCK22893G,LF requirements.
6.How does Aetrix verify that TCK22893G,LF is sourced from the original manufacturer or authorized distributors?
All TCK22893G,LF 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 TCK22893G,LF meets industry standards.
7.What is the process for return or replacement of TCK22893G,LF?
All TCK22893G,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCK22893G,LF, 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 TCK22893G,LF part is unused and in its original packaging.
Return procedure for TCK22893G,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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