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Vishay Siliconix SIP21106DT-26-E3
- Part No.:
- SIP21106DT-26-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
SIP21106DT-26-E3.pdf
- Description:
- IC REG LIN 2.6V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,228
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Product details
Overview
SIP21106DT-26-E3 from Vishay Siliconix is a 150 mA, low-noise, low-dropout linear regulator with fixed 2.6 V output, 135 mV dropout at full load, 60 µV(rms) output noise (10 Hz–100 kHz), ±1.0 % output voltage accuracy at 25 °C, and ultra-low 35 µA ground current at 1 mA load - designed for battery-powered RF-sensitive applications such as cellular handsets and digital cameras.
For engineers reviewing the SIP21106DT-26-E3 datasheet, SIP21106DT-26-E3 pinout, SIP21106DT-26-E3 application, or SIP21106DT-26-E3 equivalent, key selection criteria include its TSOT23-5L package footprint, BP pin noise-bypass capability, EN-controlled shutdown with auto-discharge, and compatibility with 1 µF ceramic output capacitors without external compensation.
Technical Context
The SIP21106DT-26-E3 uses an internal P-channel MOSFET pass device (0.9 Ω typical RDS(on)) and a 1.2 V bandgap reference to achieve precise regulation. Its error amplifier compares feedback against the reference and drives the PMOS gate to maintain output stability across load and line variations.
It features active pull-down during shutdown (100 Ω NMOS discharge path), built-in short-circuit protection (330 mA typical limit), and thermal shutdown at 160 °C with 20 °C hysteresis - enabling robust operation in portable systems where transient response and quiescent power are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.6 V ±1.0 % at 25 °C; ensures stable core supply for 2.5–2.7 V logic rails |
| Dropout Voltage | 135 mV at 150 mA load; enables regulation down to VIN = 2.73 V, extending battery runtime |
| Output Noise | 60 µV(rms), 10 Hz–100 kHz with 10 nF BP capacitor; meets RF section noise floor requirements |
| Ground Current | 35 µA typical at 1 mA load; minimizes standby current drain in always-on subsystems |
| Shutdown Current | ≤1 µA at 85 °C; supports long-term battery storage without significant self-discharge |
| PSRR | 75 dB at 1 kHz (with BP cap); suppresses switching noise from upstream DC/DC converters |
| Auto-Discharge | 100 Ω internal NMOS path discharges 1 µF output cap in <1 ms on EN deassertion |
Pinout & Package
Package: TSOT23-5L (3.05 mm × 2.85 mm × 1.0 mm), RoHS-compliant, industrial temperature range (−40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable control input | Active-high logic; <0.4 V disables regulator and activates auto-discharge |
| 2 - GND | Power ground reference | Primary thermal path; must connect to large PCB ground plane for thermal management |
| 3 - VIN | Input supply | Accepts 2.2–6.0 V; requires 1 µF ceramic bypass capacitor to GND |
| 4 - BP | Noise bypass terminal | Connects 10 nF ceramic cap to GND to reduce output noise by filtering reference path |
| 5 - VOUT | Regulated output | Delivers 2.6 V at up to 150 mA; stable with ≥1 µF ceramic output capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | 60 µV(rms) output noise with 10 nF BP capacitor enables clean power for RF transceivers and ADCs |
| P-channel MOSFET pass device | Eliminates base-drive current loss, enabling 35 µA ground current at light load vs. >100 µA in PNP LDOs |
| Integrated auto-discharge | 100 Ω internal NMOS pulls VOUT to GND within 1 ms of EN deactivation - prevents floating bias in multi-rail systems |
| Stable with small ceramics | Guaranteed stability with 1 µF X7R/Y7R output capacitor - reduces BOM count and board area vs. tantalum solutions |
| Thermal & short-circuit protection | 160 °C thermal shutdown with 20 °C hysteresis and 330 mA current limit prevent damage during fault conditions |
Applications
| Cellular Handsets | Wireless Modems |
|---|---|
Use Scenario: Powering RF front-end ICs and baseband processors in compact handheld devices with single-cell Li-ion input. IC Role / Device Role / Timing Role: Low-noise local LDO delivering clean 2.6 V supply to sensitive analog sections and PLLs. Use Value: 60 µV(rms) noise and 75 dB PSRR at 1 kHz prevent AM-to-PM distortion and phase noise degradation in transmit paths. | Use Scenario: Supplying 2.6 V to LTE/Wi-Fi coexistence modules requiring fast transient response and minimal EMI coupling. IC Role / Device Role / Timing Role: Primary post-regulator for high-efficiency DC/DC converter outputs. Use Value: 135 mV dropout allows operation down to 2.73 V input - extends usable battery range by ~12% over higher-dropout alternatives. |
| Digital Cameras | MP3 Players |
Use Scenario: Providing regulated 2.6 V to image sensor analog front-ends and ISP cores during burst capture. IC Role / Device Role / Timing Role: Low-quiescent LDO supporting rapid enable/disable cycles synchronized with imaging frame timing. Use Value: 35 µA ground current at 1 mA load and <1 ms auto-discharge minimize idle power and prevent residual charge leakage between shots. | Use Scenario: Powering audio DACs and headphone amplifiers in portable media players with tight THD+N budgets. IC Role / Device Role / Timing Role: Dedicated low-noise supply rail decoupled from noisy digital subsystems. Use Value: 10 nF BP capacitor reduces broadband noise floor, enabling >95 dB SNR in 24-bit audio playback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2602E/MB | 300 mA rated, 1.6 µA quiescent current, no BP pin, 170 mV dropout at 250 mA | Lacks dedicated noise-bypass capability; higher dropout limits low-VIN usability | Preferred when higher output current and ultra-low IQ outweigh noise performance needs |
| TCS21106DVP-26-E3 | Same SiP21106 family, TSC75-6L package (1.6 mm × 1.6 mm), identical electrical specs | Smaller footprint but lower thermal dissipation (420 mW vs. 305 mW max PD) | Select when board space is constrained and thermal margin permits smaller package |
Compared with MCP1700T-2602E/MB, SIP21106DT-26-E3 delivers 3× lower output noise and 2.5× better PSRR at 1 kHz, while TCS21106DVP-26-E3 offers identical regulation performance in a 40 % smaller footprint - both tradeoffs require revalidation of thermal design and noise-sensitive layout.
Availability
SIP21106DT-26-E3 is available at Aetrix Electronics and suitable for cellular handsets, wireless modems, and digital cameras requiring stable component supply despite end-of-life status - inventory is confirmed and supported via legacy procurement channels.
Supply support for SIP21106DT-26-E3 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
Vishay Siliconix designs high-performance discrete semiconductors and integrated power solutions, emphasizing reliability, efficiency, and miniaturization for demanding electronic systems.
The SiP21106 series targets portable, battery-operated equipment where ultra-low noise, minimal quiescent current, and small-footprint packaging are essential - specifically engineered for RF and precision analog subsystems.
FAQ
What is the maximum input voltage rating for SIP21106DT-26-E3?
The absolute maximum input voltage for SIP21106DT-26-E3 is 6.5 V relative to GND. The recommended operating range is 2.2 V to 6.0 V. Exceeding 6.5 V may cause permanent damage. Operation above 6.0 V is not guaranteed per specifications and risks violating thermal limits - especially in TSOT23-5L package where power dissipation is constrained to 305 mW at TA = 70 °C.
Does SIP21106DT-26-E3 require an external bypass capacitor on the BP pin?
Yes, SIP21106DT-26-E3 requires a 10 nF ceramic capacitor connected from the BP pin to GND to achieve its specified 60 µV(rms) output noise performance. Without this capacitor, output noise increases to ~350 µV(rms). The BP pin is unique to the SiP21106 variant and is not present in SiP21107 or SiP21108 versions - using SIP21106DT-26-E3 without the BP cap compromises its primary low-noise advantage.
How does the auto-discharge function operate in SIP21106DT-26-E3?
When the EN pin is driven low, SIP21106DT-26-E3 enters shutdown mode and activates an internal 100 Ω NMOS transistor between VOUT and GND. This path discharges a 1 µF output capacitor in under 1 ms. The discharge resistance is specified at 100 Ω (typical) and remains functional across −40 °C to +85 °C ambient. This feature prevents unintended biasing of downstream circuitry and eliminates need for external discharge resistors in SIP21106DT-26-E3 designs.
Can SIP21106DT-26-E3 be used with ceramic output capacitors smaller than 1 µF?
No - SIP21106DT-26-E3 requires a minimum 1 µF ceramic output capacitor (X7R or Y7R dielectric) for guaranteed stability across the full −40 °C to +85 °C temperature range. The datasheet specifies stability with "6 nF/mA" capacitance, which equates to ≥0.9 µF at 150 mA. Using <1 µF risks oscillation, especially with Z5U/Y5V capacitors whose ESR varies widely with temperature. SIP21106DT-26-E3 has no external compensation pins, so capacitor selection is non-negotiable for reliable operation.
Is SIP21106DT-26-E3 still in production or available for new designs?
SIP21106DT-26-E3 is End of Life (EOL) with last available purchase date of 31-Dec-2014. However, Aetrix Electronics maintains verified legacy stock with full traceability and supports ongoing production programs through controlled allocation and lifecycle coordination. Design-in is feasible for maintenance, repair, and obsolescence-mitigated programs - but new designs should evaluate modern alternatives unless SIP21106DT-26-E3's specific noise and footprint advantages are irreplaceable.
SIP21106DT-26-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.22V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 85 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB ~ 40dB (1kHz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
SIP21106DT-26-E3 FAQ
1.How can I place an order for SIP21106DT-26-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21106DT-26-E3 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 SIP21106DT-26-E3 reliable?
The price and inventory of SIP21106DT-26-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIP21106DT-26-E3 is usually 5 days.
3.What payment methods are accepted for SIP21106DT-26-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21106DT-26-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21106DT-26-E3?
SIP21106DT-26-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21106DT-26-E3 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 SIP21106DT-26-E3?
For technical support, including SIP21106DT-26-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21106DT-26-E3 requirements.
6.How does Aetrix verify that SIP21106DT-26-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21106DT-26-E3 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 SIP21106DT-26-E3 meets industry standards.
7.What is the process for return or replacement of SIP21106DT-26-E3?
All SIP21106DT-26-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21106DT-26-E3, 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 SIP21106DT-26-E3 part is unused and in its original packaging.
Return procedure for SIP21106DT-26-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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