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Texas Instruments TPS2053AD
- Part No.:
- TPS2053AD
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2053AD.pdf
- Description:
- IC PWR SWTCH N-CH 1:2/1:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,331
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Product details
Overview
TPS2053AD from Texas Instruments is a triple-channel, high-side N-channel MOSFET power-distribution switch with independent enable control per channel, 80-mΩ on-resistance at 5 V, 500 mA continuous current per switch, and integrated thermal/short-circuit protection with active-low OC outputs - designed for USB-powered peripherals, portable docking stations, and multi-rail embedded systems requiring robust inrush and fault management.
For engineers reviewing the TPS2053AD datasheet, TPS2053AD pinout, TPS2053AD application, or TPS2053AD equivalent, this device supports precise per-channel power sequencing, bidirectional switching capability, CMOS/TTL-compatible logic enables, undervoltage lockout below 2.5 V, and automatic thermal recovery - critical for reliable hot-swap and load-switching designs in space-constrained industrial and consumer electronics.
Technical Context
The TPS2053AD integrates three independent 80-mΩ high-side N-channel MOSFETs with internal charge-pump gate drivers enabling full operation down to 2.7 V input. Each channel features dedicated enable (EN1–EN3) and overcurrent (OC1–OC3) pins, with GNDA/GNDB separation supporting dual-input rail operation (IN1 and IN2).
Its current-limit architecture uses a sense FET to enter constant-current mode at ~0.9 A short-circuit threshold, while thermal protection triggers at ~140°C junction temperature with ~20°C hysteresis. The device implements undervoltage lockout (UVLO) with 100 mV hysteresis and delivers 2.5-ms typical rise time under 1-µF/10-Ω load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Number of Channels | Triple independent high-side switches - enables discrete power control for three separate loads or rails. |
| Continuous Current per Channel | 500 mA - supports USB-compliant downstream ports and low-power peripheral rails without external heatsinking. |
| RDS(on) (max, 5 V) | 100 mΩ - limits voltage drop to ≤50 mV at 500 mA, minimizing power loss and self-heating in compact layouts. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with Li-ion battery, 3.3 V, and 5 V system rails without level-shifting. |
| Enable Logic Polarity | Active-high (TPS205x series) - simplifies direct interface with microcontroller GPIOs and PMIC sequencers. |
| Standby Supply Current | 20 µA max - ensures ultra-low quiescent consumption when all channels disabled, critical for battery-backed systems. |
| Thermal Shutdown Threshold | ~140°C junction - provides fail-safe protection during sustained overload or poor PCB thermal design. |
Pinout & Package
TPS2053AD is housed in a 16-pin SOIC (D package), with GNDA/GNDB separation for dual-input operation and NC terminals to support pin compatibility across the TPS205x family. Pin assignments are validated per TI SLVS247 datasheet Figure 7 and Terminal Functions table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GNDA (Pin 1) | Ground reference for IN1 and associated circuitry | Must be connected to local ground plane near IN1 supply to minimize noise coupling into first two channels. |
| IN1 (Pin 2) | Main input voltage for OUT1 and OUT2 | Accepts 2.7–5.5 V; powers channels 1 and 2 - requires 0.1-µF ceramic bypass capacitor adjacent to pin. |
| EN1 (Pin 3) | Active-high enable for IN1→OUT1 path | Drives channel 1 ON/OFF; TTL/CMOS compatible; pulls to GND to disable channel 1 independently. |
| EN2 (Pin 4) | Active-high enable for IN1→OUT2 path | Independent control of second channel on IN1 rail - enables staggered turn-on for inrush limiting. |
| GNDB (Pin 5) | Ground reference for IN2 and associated circuitry | Separate ground return for third channel; prevents cross-talk between IN1 and IN2 domains. |
| IN2 (Pin 6) | Main input voltage for OUT3 | Second independent input rail - supports dual-supply architectures like 3.3 V + 5 V systems. |
| EN3 (Pin 7) | Active-high enable for IN2→OUT3 path | Enables/disables third channel separately - allows full isolation of third load without affecting IN1 domain. |
| NC (Pins 8, 9, 10) | No connection | Unused pins; must remain unconnected - no internal bonding or function. |
| OC1 (Pin 16) | Open-drain overcurrent flag for OUT1 | Asserts low during overload or thermal shutdown of channel 1; requires external pull-up resistor. |
| OUT1 (Pin 15) | Power-switch output for EN1-controlled path | Delivers switched IN1 to load; rated for 500 mA continuous; supports bidirectional blocking. |
| OUT2 (Pin 14) | Power-switch output for EN2-controlled path | Second switched output from IN1; identical rating and protection as OUT1. |
| OC2 (Pin 13) | Open-drain overcurrent flag for OUT2 | Dedicated fault indicator for channel 2 - enables per-channel diagnostics in firmware. |
| OC3 (Pin 12) | Open-drain overcurrent flag for OUT3 | Third independent fault signal - allows concurrent monitoring of all three channels. |
| OUT3 (Pin 11) | Power-switch output for EN3-controlled path | Switched output from IN2; electrically isolated from IN1 domain via GNDA/GNDB separation. |
Key Features
| Feature | Design Value |
|---|---|
| Independent per-channel enable and OC outputs | Enables granular power sequencing, real-time fault isolation, and software-driven load management without shared control logic. |
| Internal charge-pump gate driver | Eliminates need for external boost components while ensuring full MOSFET enhancement down to 2.7 V input. |
| 80-mΩ RDS(on) (typical at 5 V) | Reduces conduction loss to <60 mW per channel at 500 mA, easing thermal design in dense PCB layouts. |
| Dual-ground architecture (GNDA/GNDB) | Prevents ground-loop interference between IN1 and IN2 domains - essential for mixed-voltage systems. |
| 2.5-ms typical rise time (1-µF/10-Ω load) | Controls inrush dv/dt to limit peak current surge and EMI generation during hot-plug events. |
| Undervoltage lockout with 100 mV hysteresis | Prevents erratic switching or partial turn-on during brownout conditions, improving system reliability. |
Applications
| USB Peripheral Hub | Industrial I/O Module |
|---|---|
|
Use Scenario: Powering multiple USB devices (keyboard, mouse, flash drive) from a single host port with individual overcurrent protection. IC Role / Device Role / Timing Role: Triple-channel high-side switch providing independent 5 V rail switching, inrush limiting, and per-port fault reporting via OC1–OC3. Use Value: Prevents bus-wide shutdown during single-device short; enables host firmware to identify and disable faulty ports without interrupting others. |
Use Scenario: Isolating sensor, actuator, and communication subsystems in programmable logic controller (PLC) backplane modules. IC Role / Device Role / Timing Role: Distributes 5 V and 3.3 V power with independent enable timing and thermal margin for field-replaceable I/O cards. Use Value: Eliminates need for discrete MOSFETs and protection ICs per rail - reduces BOM count by 60% and layout area by 45%. |
| Portable Docking Station | Medical Patient Monitor |
|
Use Scenario: Managing power to HDMI, Ethernet, and USB-C alternate-mode peripherals in laptop docking stations with strict inrush limits. IC Role / Device Role / Timing Role: High-side load switch controlling three independent downstream rails with controlled rise/fall times and UVLO. Use Value: Meets USB Type-C inrush specification (<100 mA/ms) and avoids host port reset during plug-in events. |
Use Scenario: Safely powering isolated analog front-end, digital processing, and display subsystems in battery-operated patient monitors. IC Role / Device Role / Timing Role: Triple-channel power distributor with 20 µA standby current and thermal fault containment for Class II medical safety compliance. Use Value: Enables >100-hour battery life in sleep mode and prevents single-point failure from propagating across critical subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-distribution switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2043AD | Active-low enable inputs; identical pinout and RDS(on), but inverted logic polarity requires MCU GPIO inversion or external inverter. | Suitable where legacy control logic uses active-low signaling; not drop-in compatible without firmware or schematic changes. | Select TPS2043AD only if existing design already uses active-low enables and no redesign is permitted. |
| TPS2053BD | Same triple-channel architecture and pinout, but rated for 1 A per channel (vs. 500 mA); higher RDS(on) (135 mΩ at 5 V) and 35 µA standby current. | Better suited for higher-current loads (e.g., motor drivers, LED arrays); increased conduction loss and quiescent draw reduce battery runtime. | Choose TPS2053BD when load current exceeds 500 mA per channel and thermal budget allows higher RDS(on). |
Compared with TPS2043AD, TPS2053AD offers simplified MCU interface via active-high enables and lower standby current; compared with TPS2053BD, it delivers tighter voltage regulation and longer battery life at the expense of peak current headroom.
Availability
TPS2053AD is available at Aetrix Electronics and suitable for USB peripheral hubs, industrial I/O modules, and portable docking stations requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.
Supply support for TPS2053AD 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability power-switching solutions.
The TPS205x family was engineered specifically for USB-compliant and hot-swap-capable power distribution in space-constrained, multi-load systems - emphasizing per-channel control, fault visibility, and robust thermal management.
FAQ
What is the maximum continuous current rating per channel for the TPS2053AD?
The TPS2053AD supports 500 mA continuous current per channel under recommended operating conditions (TA ≤ 85°C, proper PCB thermal design). This rating is validated across the full 2.7 V to 5.5 V input range and accounts for internal thermal derating per the D-16 package dissipation rating table.
Does the TPS2053AD support bidirectional current flow?
Yes, the TPS2053AD is configured as a high-side N-channel MOSFET switch that blocks reverse current flow (OUT to IN) when disabled, but permits forward conduction (IN to OUT) only. It does not support true bidirectional switching - current flows solely from input to output under enable control.
How does the overcurrent protection mechanism work in the TPS2053AD?
When load current exceeds the ~0.9 A short-circuit threshold, the TPS2053AD enters constant-current mode by reducing gate drive to hold output current steady while lowering output voltage. The corresponding OCx pin goes low. If thermal limits are breached (~140°C), the affected channel shuts off entirely until die temperature drops ~20°C.
What is the purpose of the separate GNDA and GNDB pins on the TPS2053AD?
GNDA (Pin 1) serves as the ground reference for IN1, OUT1, OUT2, and their associated control circuitry; GNDB (Pin 5) is the dedicated ground for IN2 and OUT3. This separation prevents ground-loop coupling between the two input domains and maintains signal integrity in mixed-voltage systems.
Can the TPS2053AD operate from a 3.3 V supply rail?
Yes, the TPS2053AD operates across 2.7 V to 5.5 V, including standard 3.3 V rails. At 3.3 V input, RDS(on) increases to 125 mΩ (typical at 25°C), resulting in ~62.5 mV dropout at 500 mA - still within acceptable limits for most 3.3 V logic loads with adequate margin.
TPS2053AD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Switch Type:
- General Purpose
- Number of Outputs:
- 3
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 500mA
- Rds On (Typ):
- 80mOhm
- Input Type:
- Non-Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
TPS2053AD FAQ
1.How can I place an order for TPS2053AD through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2053AD 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 TPS2053AD reliable?
The price and inventory of TPS2053AD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2053AD is usually 5 days.
3.What payment methods are accepted for TPS2053AD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2053AD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2053AD?
TPS2053AD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2053AD 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 TPS2053AD?
For technical support, including TPS2053AD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2053AD requirements.
6.How does Aetrix verify that TPS2053AD is sourced from the original manufacturer or authorized distributors?
All TPS2053AD 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 TPS2053AD meets industry standards.
7.What is the process for return or replacement of TPS2053AD?
All TPS2053AD units undergo pre-shipment inspection (PSI). If there is an issue with TPS2053AD, 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 TPS2053AD part is unused and in its original packaging.
Return procedure for TPS2053AD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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