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Vishay Siliconix SIP21107DT-46-E3
- Part No.:
- SIP21107DT-46-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
SIP21107DT-46-E3.pdf
- Description:
- IC REG LIN 4.6V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,151
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Product details
Overview
SIP21107DT-46-E3 from Vishay Siliconix is a 150-mA, low-noise, low-dropout linear regulator with fixed 4.6 V output, Power-OK (POK) error flag, and ultra-low ground current (35 µA typ. at 1 mA). It features 135 mV dropout at full load, 1.0 % output voltage accuracy at 25 °C, and operates across -40 °C to +85 °C ambient for portable RF power supply applications.
For engineers reviewing the SIP21107DT-46-E3 datasheet, SIP21107DT-46-E3 pinout, SIP21107DT-46-E3 application, or SIP21107DT-46-E3 equivalent, key selection criteria include POK functionality, dropout performance at 4.6 V, shutdown current (<1 µA), ceramic capacitor compatibility, and TSOT23-5L package thermal characteristics.
Technical Context
The SIP21107DT-46-E3 integrates a P-channel MOSFET pass transistor (0.9 Ω typical RDS(on)) and a 1.2 V bandgap reference, enabling stable regulation with minimal quiescent current. Its error amplifier compares feedback against the reference to control gate voltage and maintain output accuracy under varying load and line conditions.
It implements an open-drain POK comparator monitoring VOUT against VIN-based thresholds (90–96 % of nominal), with 40 µs delay and 0.4 V low-level output. Shutdown mode activates internal 100 Ω NMOS discharge and reduces ICC(off) to ≤1 µA at 85 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.6 V ±2.5 % over -40 °C to +85 °C - ensures stable bias for 4.5–4.75 V logic rails and RF front-end ICs. |
| Dropout Voltage | 135 mV at 150 mA - enables operation down to 4.735 V input while maintaining regulation, critical for single-cell Li-ion systems near end-of-discharge. |
| Ground Current | 35 µA typical at 1 mA load - minimizes standby power loss in always-on subsystems like real-time clocks or sensor wake-up circuits. |
| Shutdown Current | ≤1 µA at 85 °C - extends battery life during deep sleep modes without external discharge circuitry. |
| POK Threshold | 90–96 % of VOUT - provides precise undervoltage detection for system reset or fault logging before functional failure occurs. |
| Output Noise | 350 µV(rms), 10 Hz–100 kHz - suitable for noise-sensitive analog/RF stages where bypass capacitors are omitted per design intent. |
| Thermal Protection | 160 °C junction shutdown with 20 °C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal layout. |
Pinout & Package
TSOT23-5L package (3.05 mm × 2.85 mm × 1.0 mm), RoHS-compliant, rated for -40 °C to +85 °C ambient operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high logic control: ≥1.2 V enables regulation; ≤0.4 V disables output and activates auto-discharge. |
| 2 (GND) | Power ground | Primary return path and thermal conduction node - must connect directly to large copper plane for thermal derating compliance. |
| 3 (VIN) | Input supply | Accepts 2.2–6.0 V input; requires ≥1 µF low-ESR ceramic capacitor placed adjacent to pin for stability and transient response. |
| 4 (VOUT) | Regulated output | Delivers 4.6 V at up to 150 mA; supports 1 µF ceramic output capacitor with ESR < 0.4 Ω for guaranteed stability. |
| 5 (POK) | Open-drain error flag | Drives low when VOUT falls below threshold; requires external pull-up to VIN or VOUT to define logic high level and sink capability. |
Key Features
| Feature | Design Value |
|---|---|
| Noise-bypass-capacitor-free operation | Eliminates 10 nF BP capacitor requirement versus SiP21106, reducing BOM count and board area in space-constrained designs. |
| Integrated POK status indicator | Provides system-level power health monitoring without external comparators or voltage dividers, simplifying fault-detection circuitry. |
| Auto-discharge on shutdown | 100 Ω internal NMOS discharges 1 µF output capacitor in <1 ms, preventing residual voltage from interfering with downstream sequencing or reset timing. |
| Short-circuit protection | 330 mA typical current limit prevents damage during output faults while maintaining safe power dissipation in TSOT23-5L package. |
| Low-ESR ceramic capacitor support | Stable with 1 µF X7R/Y7R ceramics - avoids costly tantalum or polymer capacitors and improves reliability over temperature. |
Applications
| Cellular RF Power Supply | Portable Audio Codec Bias |
|---|---|
Use Scenario: Powering RF transceiver LNA and mixer stages in GSM/WCDMA handsets operating from single Li-ion cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Low-noise 4.6 V bias source ensuring minimal phase noise degradation and EVM compliance. Use Value: 350 µV(rms) output noise and 72 dB PSRR at 1 kHz enable direct powering of sensitive RF blocks without additional filtering. | Use Scenario: Providing clean analog supply to stereo audio codec DAC/ADC in MP3 players with battery-backed real-time clock. IC Role / Device Role / Timing Role: Primary 4.6 V analog rail with POK signaling to validate power integrity before audio playback initialization. Use Value: POK output synchronizes firmware startup with stable VOUT, eliminating audio pop/click during cold boot sequences. |
| Digital Camera Image Sensor Bias | Wireless Modem Baseband Core |
Use Scenario: Supplying 4.6 V to CMOS image sensor analog front-end during burst capture mode with rapid load transients. IC Role / Device Role / Timing Role: Fast-transient LDO delivering regulated bias during pixel readout cycles with <70 µs turn-on time. Use Value: Active pull-down circuit improves output transient response, limiting undershoot to <50 mV during 0–150 mA step loads. | Use Scenario: Powering baseband processor I/O banks in 3G/4G wireless modems requiring precise voltage tracking and fault reporting. IC Role / Device Role / Timing Role: System supervisor rail with POK used as hardware reset enable signal for modem controller. Use Value: 90–96 % POK threshold tolerance aligns with JEDEC JESD8-12A I/O voltage monitor requirements for 4.5 V nominal rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-4602E/MB | 4.6 V fixed output, 250 mA rating, no POK pin, higher 200 mV dropout at 150 mA | Lacks integrated fault reporting; requires external monitoring for system safety-critical functions | Select when higher output current is needed and POK is implemented externally via supervisor IC |
| TLC7705QPWRQ1 | 4.6 V fixed output, 150 mA rating, includes POK but with 1.25 V reference and different threshold (95 % of VOUT) | Automotive-qualified (AEC-Q100), wider -40 °C to +125 °C junction range, higher 1.5 µA shutdown current | Select for automotive infotainment modules requiring extended temperature and qualification compliance |
Compared with MCP1703T-4602E/MB and TLC7705QPWRQ1, SIP21107DT-46-E3 offers tighter output accuracy (±2.5 % vs. ±3 %), lower dropout (135 mV vs. 200 mV), and lower shutdown current (≤1 µA vs. 1.5 µA), making it optimal for battery-constrained portable RF systems where POK integration reduces component count.
Availability
SIP21107DT-46-E3 is available at Aetrix Electronics and suitable for cellular phones, digital cameras, wireless modems, and portable audio devices requiring stable component supply and legacy design continuity.
Supply support for SIP21107DT-46-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 and manufactures high-performance discrete semiconductors and integrated power solutions, emphasizing reliability, efficiency, and miniaturization for demanding electronic systems.
The SiP2110x family targets portable, battery-powered applications requiring ultra-low quiescent current, low-noise regulation, and integrated power-good signaling - specifically optimized for RF, audio, and imaging subsystems in handheld consumer electronics.
FAQ
What is the maximum input voltage for SIP21107DT-46-E3?
The absolute maximum input voltage for SIP21107DT-46-E3 is 6.5 V relative to GND. The recommended operating range is 2.2 V to 6.0 V. Exceeding 6.5 V risks permanent damage, and operation above 6.0 V voids guaranteed specifications including dropout, accuracy, and POK threshold behavior.
Does SIP21107DT-46-E3 require an external pull-up resistor on the POK pin?
Yes, SIP21107DT-46-E3 requires an external pull-up resistor on the POK pin because it is an open-drain NMOS output. The resistor must connect to either VIN or VOUT to define the logic-high level; typical values range from 10 kΩ to 100 kΩ depending on rise-time and bus loading requirements.
What is the purpose of the EN pin on SIP21107DT-46-E3?
The EN pin on SIP21107DT-46-E3 controls regulator activation: applying ≥1.2 V enables output regulation, while ≤0.4 V places SIP21107DT-46-E3 in shutdown mode, reducing supply current to ≤1 µA and activating the internal 100 Ω auto-discharge path on VOUT.
Can SIP21107DT-46-E3 be used with ceramic output capacitors?
Yes, SIP21107DT-46-E3 is fully stable with 1 µF X7R or Y7R ceramic output capacitors having ESR < 0.4 Ω. This eliminates need for bulkier tantalum or aluminum electrolytic types and supports compact, high-reliability layouts in portable designs.
What is the thermal shutdown behavior of SIP21107DT-46-E3?
SIP21107DT-46-E3 triggers thermal shutdown at approximately 160 °C junction temperature and resumes operation after cooling by ~20 °C hysteresis. During continuous overload, this results in pulsed output rather than latch-off, protecting the device while allowing recovery once thermal stress subsides.
SIP21107DT-46-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):
- 4.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.22V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 85 µA
- Current - Supply (Max):
- -
- PSRR:
- 72dB ~ 38dB (1kHz ~ 100kHz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
SIP21107DT-46-E3 FAQ
1.How can I place an order for SIP21107DT-46-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21107DT-46-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 SIP21107DT-46-E3 reliable?
The price and inventory of SIP21107DT-46-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIP21107DT-46-E3 is usually 5 days.
3.What payment methods are accepted for SIP21107DT-46-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21107DT-46-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21107DT-46-E3?
SIP21107DT-46-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21107DT-46-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 SIP21107DT-46-E3?
For technical support, including SIP21107DT-46-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21107DT-46-E3 requirements.
6.How does Aetrix verify that SIP21107DT-46-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21107DT-46-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 SIP21107DT-46-E3 meets industry standards.
7.What is the process for return or replacement of SIP21107DT-46-E3?
All SIP21107DT-46-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21107DT-46-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 SIP21107DT-46-E3 part is unused and in its original packaging.
Return procedure for SIP21107DT-46-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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