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Toshiba Semiconductor and Storage TCK22892G,LF
- Part No.:
- TCK22892G,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 6-UFBGA, WLCSP
- Datasheet:
-
TCK22892G,LF.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 WCSP6E
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
TCK22892G,LF from Toshiba Electronic Devices & Storage Corporation is a load switch IC with overcurrent limiting, thermal shutdown, and output auto-discharge functions, designed for power management in space-constrained portable electronics. It delivers 740 mA output current limit, 40 mΩ typical ON resistance at 3.3 V input, and ultra-low 25 μA quiescent current, enabling efficient battery-powered operation in smartphones and wearables.
For engineers reviewing the TCK22892G,LF datasheet, TCK22892G,LF pinout, TCK22892G,LF application, or TCK22892G,LF equivalent, key selection criteria include its WCSP6E package footprint, active-high CONTROL logic, built-in thermal protection, and absence of true reverse current blocking or UVLO-critical for low-voltage rail sequencing and compact DC-DC distribution networks.
Technical Context
The TCK22892G,LF integrates a P-channel MOSFET power switch with fold-back overcurrent protection, thermal shutdown (trip at ~170°C, reset at ~150°C), and an internal discharge FET activated during OFF state. Its CONTROL pin features Schmitt-trigger input and an integrated pull-down resistor, ensuring default-OFF behavior when floating.
Unlike variants with TRCB or UVLO, TCK22892G,LF omits both functions-simplifying biasing but requiring external reverse-current mitigation and VIN monitoring in sensitive applications. Its 0.4 mm pitch WCSP6E package supports high-density layout while maintaining thermal performance up to 85°C ambient per derated power dissipation curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Limit | 740 mA typical; sets maximum safe load current before fold-back activation |
| ON Resistance | 40 mΩ typ. at VIN = 3.3 V, IOUT = −0.15 A; minimizes conduction loss and voltage drop |
| Quiescent Current | 25 μA typ. at VIN = 5.5 V, IOUT = 0 mA; extends battery life in always-on standby states |
| Input Voltage Range | 1.4 V to 5.5 V; supports Li-ion, Li-poly, and regulated 3.3 V/5 V rails |
| Thermal Shutdown | Activates at ~170°C junction temperature; protects against sustained overload or poor PCB heat sinking |
| Control Logic | Active-high; CONTROL ≥ 1.0 V (VIN ≥ 1.2 V) enables switch; internal pull-down ensures OFF at startup |
| Turn-on Delay | 40 μs typ.; enables predictable power-rail timing in multi-rail sequencing |
Pinout & Package
Package: WCSP6E (0.8 mm × 1.2 mm, 0.55 mm height, 0.4 mm pitch), ultra-compact wafer-level chip-scale package optimized for high-density mobile PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (A1, B1) | Switched output terminal | Power output node connected to load; dual pins reduce IR drop and improve current handling |
| GND (C1) | Ground reference | Common return path for control logic and power switch; critical for thermal and noise integrity |
| VIN (A2, B2) | Input power supply | Main power input; dual pins lower parasitic resistance and enhance thermal dissipation |
| CONTROL (C2) | Enable/disable logic input | Active-high digital control signal; internal pull-down ensures fail-safe OFF state on power-up |
Key Features
| Feature | Design Value |
|---|---|
| Overcurrent limiting | 740 mA fold-back protection prevents damage during short-circuit or inrush events without external sensing |
| Output auto-discharge | Internal discharge FET rapidly drains VOUT capacitance on disable, preventing residual voltage hold-up |
| Thermal shutdown with hysteresis | ~20°C hysteresis between trip (~170°C) and recovery (~150°C) avoids oscillation under marginal thermal conditions |
| Ultra-low quiescent current | 25 μA max in ON state allows use in always-on subsystems without measurable battery drain |
| Integrated control pull-down | Eliminates need for external pull-down resistor, saving board area and reducing BOM count |
Applications
| Smartphone Power Rail Switching | Wearable Sensor Subsystem Enable |
|---|---|
Use Scenario: Enabling/disabling camera module or display backlight in smartphone mainboard. IC Role / Device Role / Timing Role: Load switch controlling 3.3 V or 5 V power domain with precise ON/OFF timing and inrush control. Use Value: Prevents system brown-out during hot-plug events and reduces standby leakage via 25 μA IQ. | Use Scenario: Power gating accelerometer, gyroscope, or heart-rate sensor in fitness tracker. IC Role / Device Role / Timing Role: Low-voltage (1.4–3.3 V) load switch with fast 40 μs turn-on for responsive wake-up sequences. Use Value: Enables sub-100 μA total system sleep current by eliminating passive discharge paths. |
| USB-C Peripheral Power Management | IoT Edge Node Battery Protection |
Use Scenario: Isolating USB-C accessory power delivery path from host controller during enumeration. IC Role / Device Role / Timing Role: Controlled power gate with thermal and overcurrent protection for 5 V bus switching. Use Value: Prevents fault propagation from misbehaving peripherals while maintaining tight 40 mΩ RON efficiency. | Use Scenario: Managing power to LoRa/Wi-Fi transceiver in battery-operated environmental sensor node. IC Role / Device Role / Timing Role: High-reliability load switch with thermal shutdown for intermittent high-current TX bursts. Use Value: Sustains 740 mA peak loads without external heatsinking and auto-recovers after transient thermal overload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCK22951G | Same 740 mA ICL and WCSP6E package, but includes true reverse current blocking (TRCB) and UVLO | Required where reverse current must be blocked regardless of switch state (e.g., shared-bus systems) | Select TCK22951G only if TRCB/UVLO are mandatory; otherwise TCK22892G,LF saves cost and complexity |
| TPS22916BYFPR | 450 mV max UVLO threshold, 37 mΩ RON at 5 V, 1.2 μA IQ(OFF), WSON-6 package (1.5 × 1.5 mm) | Larger footprint but offers lower RON and tighter UVLO control; lacks auto-discharge | Choose TPS22916BYFPR for higher efficiency at 5 V and strict UVLO requirements; accept larger size and no auto-discharge |
Compared with TCK22951G and TPS22916BYFPR, the TCK22892G,LF provides optimal balance of compactness, low IQ, and integrated auto-discharge for space-limited battery-powered devices where TRCB and UVLO are not required-reducing external component count without sacrificing core protection.
Availability
TCK22892G,LF is available at Aetrix Electronics and suitable for smartphone power rail switching, wearable sensor subsystem enable, and IoT edge node battery protection requiring stable component supply across high-volume production cycles.
Supply support for TCK22892G,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 semiconductor solutions for power management, motor control, and analog signal processing, with global manufacturing and quality assurance infrastructure.
The TCK22xxxG series targets ultra-compact, low-power load switching in portable electronics-emphasizing minimal board area, thermal robustness, and integration of essential protections without feature bloat.
FAQ
What is the maximum input voltage rating for the TCK22892G,LF?
The TCK22892G,LF has an absolute maximum input voltage (VIN) rating of 6.0 V. Its recommended operating range is 1.4 V to 5.5 V, making it compatible with standard Li-ion battery voltages and regulated 3.3 V or 5 V rails. Exceeding 6.0 V risks permanent device damage, and operation below 1.4 V may prevent reliable turn-on due to CONTROL logic thresholds.
Does the TCK22892G,LF include true reverse current blocking (TRCB)?
No, the TCK22892G,LF does not include true reverse current blocking. Per Toshiba's function table and electrical characteristics notes, TRCB is only present in TCK22946G/TCK22951G/TCK2065G/TCK1024G variants. The TCK22892G,LF relies on external design measures-such as diode placement or system-level isolation-to prevent reverse current flow from VOUT to VIN.
What is the typical ON resistance of the TCK22892G,LF at 1.8 V input?
The TCK22892G,LF has a typical ON resistance (RON) of 70 mΩ at VIN = 1.8 V and IOUT = −0.15 A, as specified in Toshiba's Electrical Characteristics table. This value increases to 141 mΩ at 1.2 V and 179 mΩ at 1.1 V, reflecting MOSFET channel behavior at lower gate drive. Designers should verify voltage drop and power loss at minimum system VIN.
How does the thermal shutdown function operate in the TCK22892G,LF?
The TCK22892G,LF incorporates a thermal shutdown circuit that disables the power switch when junction temperature exceeds ~170°C (typical). Once temperature falls below ~150°C (typical), the device automatically resumes normal operation due to built-in hysteresis. This cycle repeats under sustained overload, protecting the IC and PCB without requiring external intervention.
Is an external pull-down resistor required on the CONTROL pin of the TCK22892G,LF?
No, an external pull-down resistor is not required on the CONTROL pin of the TCK22892G,LF. The device integrates an internal pull-down resistor (a few MΩ) between CONTROL and GND, ensuring a defined LOW state and default-OFF behavior during power-up or when the pin is left unconnected-reducing BOM count and layout complexity.
TCK22892G,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):
- 740mA
- 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)
TCK22892G,LF FAQ
1.How can I place an order for TCK22892G,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCK22892G,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 TCK22892G,LF reliable?
The price and inventory of TCK22892G,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCK22892G,LF is usually 5 days.
3.What payment methods are accepted for TCK22892G,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCK22892G,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCK22892G,LF?
TCK22892G,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCK22892G,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 TCK22892G,LF?
For technical support, including TCK22892G,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCK22892G,LF requirements.
6.How does Aetrix verify that TCK22892G,LF is sourced from the original manufacturer or authorized distributors?
All TCK22892G,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 TCK22892G,LF meets industry standards.
7.What is the process for return or replacement of TCK22892G,LF?
All TCK22892G,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCK22892G,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 TCK22892G,LF part is unused and in its original packaging.
Return procedure for TCK22892G,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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