My Inquiry
My Account
Texas Instruments TPS2158IDGN
- Part No.:
- TPS2158IDGN
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
TPS2158IDGN.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:2 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,498
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS2158IDGN from Texas Instruments is a USB bus-powered peripheral power management IC integrating a 3.3-V/200-mA fixed-output LDO, two independent high-side N-channel MOSFET power switches (each rated for 150 mA continuous output), and independent thermal/short-circuit protection per channel. It operates from 2.9 V to 5.5 V input, features active-high enables (EN1, EN2, LDO_EN), and is packaged in an 8-pin MSOP PowerPAD™ for compact USB peripheral designs such as digital cameras and headsets.
For engineers reviewing the TPS2158IDGN datasheet, TPS2158IDGN pinout, TPS2158IDGN application, or TPS2158IDGN equivalent, this device serves as a space-saving, single-chip solution for meeting USB 2.0 bus-powered peripheral requirements-including 100-mA startup current limit, controlled rise/fall times to suppress inrush, and independent fault isolation between 3.3-V controller rail and 5-V peripheral circuitry.
Technical Context
The TPS2158IDGN implements dual high-side N-channel MOSFETs with typical rDS(on) of 340 mΩ at 25°C and 680 mΩ over temperature, each independently enabled via CMOS/TTL-compatible logic inputs. Its integrated 3.3-V LDO delivers up to 200 mA with 0.35-V dropout at full load and includes dedicated enable (LDO_EN) and output (LDO_OUT) pins.
Each switch and the LDO feature independent current-sense-based short-circuit protection and dual-threshold thermal shutdown (120°C first trip, 155°C second trip), enabling fault containment without disrupting adjacent channels. Undervoltage lockout (UVLO) activates below ~2.5 V on VIN/SWIN1 to prevent erratic operation during brownout or hot-insertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.9 V to 5.5 V - supports full USB bus voltage tolerance including worst-case cable drop and ripple. |
| LDO output | 3.3 V ±3% at 200 mA - powers USB controller logic and pull-up resistors while maintaining USB specification compliance. |
| Switch continuous current | 150 mA per channel - meets USB enumeration current limit (≤100 mA startup, ≤500 mA max after enumeration). |
| rDS(on) (typ) | 340 mΩ at 25°C - limits conduction loss to <53 mW per switch at 150 mA, reducing thermal stress in MSOP-8 package. |
| Enable compatibility | CMOS/TTL logic-level (VIH ≥ 2 V, VIL ≤ 0.8 V) - interfaces directly with 3.3-V or 5-V microcontrollers without level-shifting. |
| Thermal shutdown thresholds | 120°C (per-switch trip), 155°C (global shutdown) - provides graded fault response: isolate faulted channel first, then full shutdown if sustained overload. |
| UVLO threshold | 2.2 V to 2.85 V with 260 mV hysteresis - ensures clean power-up sequencing and prevents oscillation near brownout conditions. |
Pinout & Package
TPS2158IDGN is housed in an 8-pin MSOP (DGN) package with exposed thermal pad (PowerPAD™), optimized for thermal performance in space-constrained USB peripheral PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 (Pin 8) | Active-high enable for Switch 1 | Controls power delivery to OUT1 (e.g., 5-V peripheral circuitry); high = enabled, low = off with fast turnoff (~0.05–2 ms). |
| EN2 (Pin 7) | Active-high enable for Switch 2 | Controls power delivery to OUT2 (e.g., 3.3-V subsystem); independent of EN1 for staged power-up per USB spec. |
| LDO_EN (Pin 6) | Active-high enable for internal LDO | Activates 3.3-V regulator; required before OUT2 can be powered; enables suspend/resume control of controller supply. |
| GND (Pin 5) | Power and signal ground reference | Common return path for LDO, switches, and protection circuitry; must be connected to low-impedance PCB ground plane. |
| LDO_OUT (Pin 3) | LDO regulated output | Provides stable 3.3-V supply; also serves as input to Switch 2, enabling direct LDO-to-load connection without external routing. |
| OUT1 (Pin 1) | Switch 1 output | Delivers regulated input voltage (VIN/SWIN1) to downstream 5-V loads; isolated when EN1 = low. |
| OUT2 (Pin 4) | Switch 2 output | Delivers LDO_OUT (3.3 V) to downstream logic; enables precise sequencing-LDO_EN high before EN2 high. |
| VIN/SWIN1 (Pin 2) | Primary input supply | Supplies both LDO and Switch 1; accepts USB 5-V bus; requires 0.01–0.1 µF ceramic bypass capacitor close to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.3-V/200-mA LDO with enable | Eliminates need for external regulator; supports USB controller power and 1.5-kΩ D+ pull-up resistor directly. |
| Dual independent high-side switches | Enables staged power delivery: LDO_EN → EN2 → EN1, satisfying USB's 100-mA pre-enumeration current limit. |
| Per-channel thermal and short-circuit protection | Isolates faults without disabling healthy channel-critical for multi-rail peripherals like digital cameras with separate sensor and interface rails. |
| Controlled rise/fall times (0.1–6 ms) | Reduces EMI and inrush current spikes during power-up/down, easing compliance with USB electromagnetic compatibility requirements. |
| Undervoltage lockout (UVLO) with hysteresis | Prevents malfunction during hot-plug events or marginal input conditions; ensures clean reset behavior across temperature. |
Applications
| Digital Camera Peripheral | USB Headset System |
|---|---|
|
Use Scenario: A compact digital camera connects to a host PC via USB for image transfer and charging, requiring strict adherence to bus-powered current limits and reliable power sequencing. IC Role / Device Role / Timing Role: TPS2158IDGN manages power distribution: LDO supplies 3.3 V to the USB transceiver and image processor core; Switch 2 powers 3.3-V sensor interface; Switch 1 enables 5-V flash LED only post-enumeration. Use Value: Enables full USB 2.0 compliance with single-chip integration-reducing board area by 60% versus discrete LDO + dual switches-and guarantees fault isolation so sensor failure won't disable USB communication. |
Use Scenario: A USB headset integrates microphone preamp, audio DAC, and LED indicators, all powered from the USB bus while maintaining low-noise analog performance and hot-plug robustness. IC Role / Device Role / Timing Role: TPS2158IDGN delivers clean 3.3-V LDO power to the audio codec and microcontroller; Switch 2 powers noise-sensitive analog circuitry; Switch 1 supplies 5-V bias to LEDs only when active. Use Value: The LDO's 50-dB PSRR at 1 kHz and controlled switching edges minimize digital switching noise coupling into audio paths, preserving SNR in battery-free USB audio devices. |
| Zip Drive Interface | USB Speaker Module |
|
Use Scenario: A legacy Zip drive adapter connects via USB to modern hosts, requiring 5-V motor drive and 3.3-V logic-all sourced from bus power with tight thermal constraints. IC Role / Device Role / Timing Role: TPS2158IDGN provides 3.3-V logic power via LDO; Switch 1 delivers 5-V to motor driver IC only after enumeration; Switch 2 powers 3.3-V interface logic with independent enable for standby mode. Use Value: Dual thermal trip (120°C per channel) allows motor current surge to trigger local shutdown without cutting power to USB interface-maintaining host visibility during transient overloads. |
Use Scenario: A portable USB speaker draws power solely from the host port, powering Class-D amplifier, DSP, and status LEDs while surviving repeated plug/unplug cycles. IC Role / Device Role / Timing Role: TPS2158IDGN supplies 3.3-V to DSP and USB PHY; Switch 1 powers 5-V amplifier stage; UVLO and soft-start ensure glitch-free audio startup and no pop/click on insertion. Use Value: UVLO hysteresis (260 mV) and deglitch (50 µs) prevent false triggering during USB hot-plug transients, eliminating audible artifacts and ensuring reliable enumeration across host platforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-switch + LDO power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2148IDGN | Active-low enables (EN1, EN2, LDO_EN); otherwise identical topology, specs, and pinout. | Requires inverted logic control signals; not drop-in compatible without MCU firmware or gate-level inversion. | Select TPS2148IDGN only when system logic naturally provides active-low enables and layout reuse is prioritized. |
| TPS22965DSGR | Single 5-V/2-A load switch (no LDO); 12-mΩ rDS(on); no thermal/short-circuit protection per channel. | Cannot replace TPS2158IDGN's integrated LDO or dual independent protection-requires external 3.3-V regulator and fault management. | Use TPS22965DSGR only for simple 5-V rail switching where LDO and protection are handled elsewhere. |
Compared with TPS2148IDGN, the TPS2158IDGN eliminates external level-shifting for active-high MCU GPIOs; compared with TPS22965DSGR, it delivers complete USB-compliant power architecture-including regulation, sequencing, and per-rail fault containment-in one MSOP-8 package.
Availability
TPS2158IDGN is available at Aetrix Electronics and suitable for USB peripheral design, embedded audio systems, and portable storage interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TPS2158IDGN 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 connectivity technologies, with decades of expertise in power management ICs for USB, industrial, and consumer applications.
The TPS21xx family was designed specifically for USB bus-powered peripheral power management-integrating LDO regulation, dual high-side switching, and intelligent protection to replace multi-component solutions in space- and cost-sensitive designs.
FAQ
What is the maximum continuous output current per switch in the TPS2158IDGN?
The TPS2158IDGN supports 150 mA of continuous output current per switch (OUT1 and OUT2) under recommended operating conditions. This rating ensures compliance with USB 2.0 bus-powered peripheral current limits during active operation, while higher short-circuit current limits (200–400 mA) provide temporary overload tolerance before thermal or current-limit protection engages. The TPS2158IDGN maintains this rating across its full −40°C to 85°C ambient temperature range.
Does the TPS2158IDGN include built-in protection against short circuits and overheating?
Yes, the TPS2158IDGN incorporates independent short-circuit and thermal protection for each switch and the LDO. Each channel features current-sense-based short-circuit limiting (200–400 mA trip range) and dual-threshold thermal shutdown: a first trip at ~120°C isolates only the faulted channel, while a second global trip at 155°C disables all outputs. These protections are fully integrated-no external components required-and are validated per TI's SLVS373 datasheet.
How does the TPS2158IDGN meet USB 2.0 bus-powered peripheral requirements?
The TPS2158IDGN meets USB 2.0 bus-powered peripheral requirements through three key capabilities: (1) an integrated 3.3-V/200-mA LDO to power the USB controller and D+ pull-up resistor; (2) independent active-high enables (EN1, EN2, LDO_EN) enabling staged power-up to stay under 100 mA pre-enumeration; and (3) controlled rise/fall times (0.1–6 ms) minimizing inrush current and EMI. These functions are implemented in a single MSOP-8 package, as confirmed in the TPS2158IDGN datasheet section "USB Applications".
What is the purpose of the VIN/SWIN1 pin on the TPS2158IDGN?
VIN/SWIN1 (Pin 2) serves as the common input supply for both the internal 3.3-V LDO and Switch 1. It accepts the USB 5-V bus voltage (2.9 V to 5.5 V) and must be decoupled with a 0.01–0.1 µF ceramic capacitor placed close to the pin. This dual-role pin simplifies layout by eliminating separate input routing for regulation and switching, and is explicitly defined in the TPS2158IDGN terminal functions table and functional block diagram.
Can the TPS2158IDGN be used in place of the TPS2148IDGN without hardware changes?
No-the TPS2158IDGN cannot be used as a direct replacement for the TPS2148IDGN without hardware or firmware modifications. While both share identical pinout, package, and electrical specifications, the TPS2158IDGN uses active-high enables (EN1, EN2, LDO_EN), whereas the TPS2148IDGN uses active-low enables. Swapping them would invert control logic, causing unintended power states unless the driving signals are inverted externally or in firmware. This distinction is explicitly stated in the TPS2158IDGN datasheet description.
TPS2158IDGN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Type:
- USB Switch
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:2
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.9V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 200mA
- Rds On (Typ):
- 340mOhm
- Input Type:
- Non-Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
TPS2158IDGN FAQ
1.How can I place an order for TPS2158IDGN through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2158IDGN 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 TPS2158IDGN reliable?
The price and inventory of TPS2158IDGN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2158IDGN is usually 5 days.
3.What payment methods are accepted for TPS2158IDGN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2158IDGN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2158IDGN?
TPS2158IDGN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2158IDGN 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 TPS2158IDGN?
For technical support, including TPS2158IDGN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2158IDGN requirements.
6.How does Aetrix verify that TPS2158IDGN is sourced from the original manufacturer or authorized distributors?
All TPS2158IDGN 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 TPS2158IDGN meets industry standards.
7.What is the process for return or replacement of TPS2158IDGN?
All TPS2158IDGN units undergo pre-shipment inspection (PSI). If there is an issue with TPS2158IDGN, 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 TPS2158IDGN part is unused and in its original packaging.
Return procedure for TPS2158IDGN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS2158IDGN Tags
-
TPS22919DCKR
Texas Instruments
-
MIC2091-1YM5-TR
Microchip Technology
-
MIC2090-1YM5-TR
Microchip Technology
-
TPS22995RZFR
Texas Instruments
-
TPS22975DSGR
Texas Instruments
-
SIP32510DT-T1-GE3
Vishay Siliconix
-
ULN2003D1013TR
STMicroelectronics
-
MIC2005A-1YM5-TR
Microchip Technology
-
MIC2005A-1YM6-TR
Microchip Technology
-
TPS22916BYFPR
Texas Instruments
-
TPS22917DBVR
Texas Instruments
-
ULN2003APWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
