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Vishay Siliconix SIP21107DT-30-E3
- Part No.:
- SIP21107DT-30-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
SIP21107DT-30-E3.pdf
- Description:
- IC REG LINEAR 3V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,865
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Product details
Overview
SIP21107DT-30-E3 from Vishay Siliconix is a 150-mA, 3.0-V fixed-output low-dropout (LDO) linear regulator with Power-OK (POK) error flag output and no external noise bypass capacitor required. It features 135 mV dropout at 150 mA, 1.0 % output voltage accuracy at 25 °C, and ultra-low 35 µA ground current at 1 mA load - optimized for battery-powered RF systems such as wireless handsets and digital cameras.
For engineers reviewing the SIP21107DT-30-E3 datasheet, SIP21107DT-30-E3 pinout, SIP21107DT-30-E3 application, or SIP21107DT-30-E3 equivalent, key selection criteria include POK threshold behavior (93 % VOUT nominal), auto-discharge resistance (100 Ω), shutdown current (<1 µA), thermal protection (160 °C), and compatibility with 1 µF ceramic output capacitors in TSOT23-5L packaging.
Technical Context
The SIP21107DT-30-E3 uses an internal P-channel MOSFET pass transistor (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 gate of the PMOS to maintain output stability across load and line variations.
POK functionality is implemented via an open-drain NMOS comparator monitoring VOUT relative to VIN; it asserts low when VOUT falls below 93 % of nominal (e.g., <2.79 V for 3.0 V output) during dropout, overcurrent, or thermal shutdown. The EN pin enables logic-level control with 0.4 V low threshold and 1.2 V high threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2.5 % over -40 °C to +85 °C ambient - ensures stable core supply for 3.0 V logic rails. |
| Dropout Voltage | 135 mV at 150 mA load - enables operation down to VIN = 3.135 V while maintaining regulation. |
| Ground Current | 35 µA typical at 1 mA load - extends battery runtime in standby mode of portable devices. |
| Shutdown Current | ≤1 µA at 85 °C - minimizes quiescent drain during system sleep states. |
| POK Threshold | 93 % of VOUT nominal (2.79 V) with 1.5 % hysteresis - provides reliable under-voltage fault detection without chatter. |
| Auto-Discharge Resistance | 100 Ω NMOS pull-down - discharges 1 µF output capacitor in <1 ms upon shutdown. |
| Thermal Shutdown | 160 °C junction temperature with 20 °C hysteresis - prevents permanent damage during sustained overload. |
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 | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high logic control; <0.4 V disables regulator and activates auto-discharge. |
| 2 (GND) | Power ground | Primary thermal and electrical return path; must connect to large PCB ground plane. |
| 3 (VIN) | Input supply | Accepts 2.2–6.0 V; requires 1 µF ceramic bypass capacitor to GND for stability. |
| 4 (VOUT) | Regulated output | Delivers 3.0 V at up to 150 mA; stable with ≥1 µF ceramic output capacitor. |
| 5 (POK) | Open-drain error flag | Active-low signal requiring external pull-up; indicates VOUT <2.79 V or fault condition. |
Key Features
| Feature | Design Value |
|---|---|
| No external noise bypass capacitor needed | Eliminates 10 nF BP capacitor requirement - reduces BOM count and board area vs. SiP21106. |
| Integrated POK (Power OK) output | Provides system-level power sequencing and fault monitoring without external comparators. |
| Auto-discharge on shutdown | 100 Ω internal NMOS rapidly drains output capacitance - prevents back-powering of upstream circuitry. |
| Short-circuit and thermal protection | 330 mA current limit and 160 °C thermal shutdown ensure robustness in fault conditions. |
| Ultra-low ground current | 35 µA at light load enables >1-year battery life in always-on sensor nodes. |
Applications
| Cellular Handset Power Management | Wireless Modem RF Core Supply |
|---|---|
Use Scenario: Regulating battery voltage to 3.0 V for baseband processor I/O and memory interfaces. IC Role / Device Role / Timing Role: Primary LDO supplying noise-sensitive digital logic with fast transient response. Use Value: 135 mV dropout preserves operating time as battery discharges from 4.2 V to 3.135 V. | Use Scenario: Providing clean 3.0 V bias to RF transceiver ICs in LTE/Wi-Fi modules. IC Role / Device Role / Timing Role: Low-noise voltage source with POK monitoring for RF subsystem power validation. Use Value: POK flag enables host MCU to halt transmission if VOUT drops below 2.79 V - preventing RF data corruption. |
| Digital Camera Image Sensor Bias | PDA Application Processor Core Rail |
Use Scenario: Delivering regulated 3.0 V to CMOS image sensor analog front-end circuits. IC Role / Device Role / Timing Role: Low-ESR-stable LDO with minimal output noise to avoid pixel pattern noise. Use Value: No BP capacitor required simplifies layout near sensitive analog sensor traces. | Use Scenario: Supplying 3.0 V core voltage to ARM-based application processors during burst-mode operation. IC Role / Device Role / Timing Role: High-current-capable LDO with 330 mA short-circuit limit for safe transient overload handling. Use Value: Auto-discharge clears VOUT within 1 ms after shutdown - meets PDA fast-suspend timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/TT | 300 mA output capability, 1.6 µA quiescent current, no POK pin, SC70-5 package | Lacks fault monitoring; suited for cost-sensitive non-critical rails | Select when higher current and lower IQ outweigh need for POK signaling. |
| Torex XC6206P302MR-G | 150 mA, 3.0 V fixed, no POK, SOT-25 package, 1 µA shutdown current | Missing power-good indication; requires external circuit for fault detection | Choose for footprint-compatible replacement where POK is not required. |
Compared with SIP21107DT-30-E3, MCP1700T-3002E/TT offers higher current but no POK, while XC6206P302MR-G matches current rating and shutdown IQ but omits fault reporting - making SIP21107DT-30-E3 uniquely suitable for systems requiring integrated power validation.
Availability
SIP21107DT-30-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.
Supply support for SIP21107DT-30-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 for demanding analog and power management applications.
The SiP21107 series targets portable electronics requiring ultra-low IQ, precise voltage regulation, and integrated power-status signaling - specifically addressing noise-sensitive RF and battery-constrained systems.
FAQ
What is the POK threshold voltage for SIP21107DT-30-E3?
The POK threshold for SIP21107DT-30-E3 is guaranteed at 93 % of nominal output voltage (2.79 V for 3.0 V output) with 1.5 % hysteresis. This means POK transitions low when VOUT falls below 2.79 V and returns high only after VOUT rises above 2.835 V, preventing oscillation during marginal conditions. The SIP21107DT-30-E3 implements this using an internal comparator referenced to VIN, ensuring accurate tracking across input variations.
Does SIP21107DT-30-E3 require an external bypass capacitor?
No, SIP21107DT-30-E3 does not require an external noise bypass capacitor - unlike the SiP21106 variant which needs a 10 nF capacitor on the BP pin. The SIP21107DT-30-E3 achieves low-noise performance through internal compensation, simplifying layout and reducing BOM count. This design choice directly supports its target use in space-constrained portable devices where every component matters.
What is the maximum input voltage rating for SIP21107DT-30-E3?
The absolute maximum input voltage for SIP21107DT-30-E3 is 6.5 V, but the recommended operating range is 2.2 V to 6.0 V per the datasheet. Operating above 6.0 V risks exceeding safe power dissipation limits, especially at elevated ambient temperatures. For example, at VIN = 6.0 V and IOUT = 150 mA, power dissipation reaches 450 mW - requiring careful thermal design with the TSOT23-5L package's 180 °C/W θJA.
How does the auto-discharge function work in SIP21107DT-30-E3?
When the EN pin is pulled low, SIP21107DT-30-E3 enters shutdown mode and activates an internal 100 Ω NMOS transistor between VOUT and GND. This discharge path clears a 1 µF output capacitor in under 1 ms, preventing residual voltage from back-powering downstream circuitry or interfering with system reset sequences. The SIP21107DT-30-E3 specification guarantees this behavior across -40 °C to +85 °C, making it reliable for portable device suspend/resume cycles.
Is SIP21107DT-30-E3 still in production?
No, SIP21107DT-30-E3 is End of Life with last available purchase date of 31-Dec-2014 per Vishay documentation. However, Aetrix Electronics maintains legacy inventory and supports lifecycle continuity planning, including traceable sourcing and volume procurement assistance for ongoing production programs that rely on this qualified component.
SIP21107DT-30-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):
- 3V
- 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-30-E3 FAQ
1.How can I place an order for SIP21107DT-30-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21107DT-30-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-30-E3 reliable?
The price and inventory of SIP21107DT-30-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-30-E3 is usually 5 days.
3.What payment methods are accepted for SIP21107DT-30-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21107DT-30-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21107DT-30-E3?
SIP21107DT-30-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21107DT-30-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-30-E3?
For technical support, including SIP21107DT-30-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21107DT-30-E3 requirements.
6.How does Aetrix verify that SIP21107DT-30-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21107DT-30-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-30-E3 meets industry standards.
7.What is the process for return or replacement of SIP21107DT-30-E3?
All SIP21107DT-30-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21107DT-30-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-30-E3 part is unused and in its original packaging.
Return procedure for SIP21107DT-30-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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