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Vishay Siliconix SIP21107DVP-28-E3
- Part No.:
- SIP21107DVP-28-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- PowerPAK® TSC-75-6
- Datasheet:
-
SIP21107DVP-28-E3.pdf
- Description:
- IC REG LIN 2.8V 150MA TSC75-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,514
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Product details
Overview
SIP21107DVP-28-E3 from Vishay Siliconix is a 2.8 V fixed-output, 150 mA low-noise, low-dropout 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 operates across –40 °C to +85 °C ambient temperature. It is designed for RF-sensitive portable electronics such as cellular handsets and wireless modems where stable, quiet power is critical.
For engineers reviewing the SIP21107DVP-28-E3 datasheet, SIP21107DVP-28-E3 pinout, SIP21107DVP-28-E3 application, or SIP21107DVP-28-E3 equivalent, key selection criteria include POK functionality, ultra-low ground current (35 µA typ. at 1 mA), shutdown current <1 µA, auto-discharge capability, and compatibility with 1 µF ceramic output capacitors in TSOT23-5L packaging.
Technical Context
The SIP21107DVP-28-E3 uses an internal P-channel MOSFET pass transistor (0.9 Ω typical RDS(on)) enabling low quiescent current and high efficiency in dropout. Its error amplifier compares a 1.2 V bandgap reference against feedback from the fixed 2.8 V output, delivering tight regulation under load and line transients.
The integrated open-drain POK pin monitors output voltage relative to VIN and asserts low when VOUT falls below 90–96 % of nominal (e.g., <2.52 V for 2.8 V output), requiring only an external pull-up resistor. Shutdown mode activates via EN pin <0.4 V, engaging a 100 Ω NMOS discharge path to ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2.5 % over –40 °C to +85 °C - ensures stable core logic or RF bias rail without external resistors. |
| Dropout Voltage | 135 mV at 150 mA load - enables operation down to VIN = 2.93 V while maintaining regulation, extending battery runtime. |
| Ground Current | 35 µA typical at 1 mA load - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up circuits. |
| Shutdown Current | ≤1 µA at 85 °C - reduces system-level leakage during deep sleep, critical for multi-day battery life in portable devices. |
| Output Noise | 350 µV(rms) (10 Hz–100 kHz) - higher than SiP21106 but sufficient for non-RF analog sections; no BP capacitor needed. |
| POK Threshold | 90–96 % of VOUT (e.g., 2.52–2.69 V for 2.8 V) - provides precise undervoltage detection for system reset or fault logging. |
| Auto-Discharge | 100 Ω NMOS pull-down - discharges 1 µF output cap in <1 ms on shutdown, preventing residual voltage from interfering with sequencing. |
Pinout & Package
Package: TSOT23-5L (3.05 mm × 2.85 mm × 1.0 mm), RoHS-compliant, Pb-free, industrial temperature range (–40 °C to +85 °C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high control: ≥1.2 V enables regulation; ≤0.4 V disables output and triggers auto-discharge. |
| 2 (GND) | Power ground | Primary thermal and electrical return 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 ground for stability and noise rejection. |
| 4 (VOUT) | Regulated output | Delivers 2.8 V ±2.5 %; supports 150 mA continuous, 330 mA peak; stable with ≥1 µF ceramic output capacitor. |
| 5 (POK) | Open-drain error flag | Asserts low when VOUT drops below threshold; requires external pull-up to VIN or VOUT for logic-level interface. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated POK output | Eliminates need for external supervisor IC in battery-powered systems requiring power-good monitoring. |
| No noise bypass capacitor required | Reduces BOM count and board area vs. SiP21106; simplifies layout for space-constrained handheld designs. |
| Auto-discharge on shutdown | Ensures clean power-down sequencing without external discharge circuitry or timing delays. |
| Thermal and short-circuit protection | Shuts down at ~160 °C junction temp and limits output to 330 mA typical, enabling robust operation in unregulated environments. |
| Ultra-low shutdown current | Enables >10-year shelf life in sealed IoT sensors or medical patches where battery drain must be minimized. |
Applications
| Cellular Handset Power Management | Wireless Modem RF Bias Rail |
|---|---|
Use Scenario: Powers baseband processor I/O or memory interface in GSM/UMTS handsets operating from single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Low-noise LDO providing clean 2.8 V supply; POK signals MCU when rail is valid during power-up. Use Value: 135 mV dropout allows full utilization of battery voltage down to 2.93 V, extending talk time by ~8 % vs. higher-dropout alternatives. | Use Scenario: Supplies 2.8 V bias to RF front-end LNAs and mixers in 802.11b/g/n Wi-Fi modems. IC Role / Device Role / Timing Role: Regulator with POK output synchronizes RF enable timing; low 350 µV(rms) noise avoids desensitization of adjacent receive channels. Use Value: No external BP capacitor reduces component count and parasitic inductance, improving RF immunity and easing FCC certification. |
| Digital Camera Image Sensor Interface | PDA System-on-Chip Core Supply |
Use Scenario: Powers CMOS image sensor analog front-end and ADC reference in compact digital cameras. IC Role / Device Role / Timing Role: Stable 2.8 V source with fast turn-on (<70 µs) and POK-driven initialization sequence for sensor startup. Use Value: Auto-discharge clears residual voltage before sensor reset, preventing image artifacts from floating bias rails. | Use Scenario: Supplies 2.8 V core voltage to ARM-based SoC in PDAs with aggressive power-state transitions. IC Role / Device Role / Timing Role: Enables rapid entry/exit from deep-sleep modes via EN pin; POK confirms rail readiness before waking CPU. Use Value: ≤1 µA shutdown current extends standby time to >30 days on a single 800 mAh battery, meeting PDA user expectations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1826T-2802E/DB | 2.8 V fixed, 300 mA output, 250 mV dropout at 300 mA, no POK pin, 65 µV(rms) noise | Lacks POK functionality; requires external supervisor for power-good signaling | Select when higher output current is needed and POK is handled elsewhere in system design. |
| TCS21107DVP-28-E3 | Same die, identical specs, TSC75-6L package (1.6 mm × 1.6 mm) - smaller footprint, lower thermal resistance (131 °C/W) | Requires different PCB layout and reflow profile due to 6-pin, leadless package | Select when board space is constrained and thermal performance is prioritized over assembly simplicity. |
Compared with MCP1826T-2802E/DB, SIP21107DVP-28-E3 offers integrated POK and lower dropout for longer battery life, while TCS21107DVP-28-E3 delivers identical regulation with superior thermal dissipation in a smaller footprint-both require layout changes and are not pin-compatible replacements.
Availability
SIP21107DVP-28-E3 is available at Aetrix Electronics and suitable for cellular handsets, wireless modems, digital cameras, and PDAs requiring stable component supply with known end-of-life status.
Supply support for SIP21107DVP-28-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 is a global semiconductor manufacturer specializing in discrete components and power ICs, with expertise in high-reliability analog solutions for industrial and consumer markets.
The SiP21107 series was designed specifically for battery-powered portable electronics needing low-noise, low-quiescent-current regulation with integrated power-good monitoring and fast transient response.
FAQ
What is the maximum input voltage rating for SIP21107DVP-28-E3?
The absolute maximum input voltage for SIP21107DVP-28-E3 is 6.5 V. The recommended operating range is 2.2 V to 6.0 V. Exceeding 6.5 V may cause permanent damage, and operation above 6.0 V is outside specified performance limits per the datasheet. SIP21107DVP-28-E3 must be used within these bounds to ensure reliability and regulation accuracy.
Does SIP21107DVP-28-E3 require an external pull-up resistor on the POK pin?
Yes, SIP21107DVP-28-E3 requires an external pull-up resistor on the POK pin because it is an open-drain output. The resistor must connect to either VIN or VOUT to establish a logic-high state when the output is valid. SIP21107DVP-28-E3's POK pin sinks up to 0.5 mA and has ≤0.4 V low-level voltage, making standard 10–100 kΩ pull-ups compatible with most microcontroller inputs.
What is the thermal shutdown behavior of SIP21107DVP-28-E3?
SIP21107DVP-28-E3 enters thermal shutdown when junction temperature exceeds ~160 °C, turning off the P-channel pass transistor. After cooling by ~20 °C, it automatically resumes regulation. This hysteresis prevents oscillation. SIP21107DVP-28-E3 is rated for continuous operation up to 125 °C junction temperature; sustained thermal cycling indicates inadequate PCB copper area or excessive power dissipation.
Can SIP21107DVP-28-E3 be used with ceramic output capacitors smaller than 1 µF?
No - SIP21107DVP-28-E3 requires a minimum 1 µF ceramic output capacitor for guaranteed stability across –40 °C to +85 °C. The datasheet specifies stability with "6 nF/mA" (≈1 µF at 150 mA). Using smaller values risks oscillation or poor load-transient response. SIP21107DVP-28-E3 is optimized for X7R/Y7R dielectrics; Z5U/Y5V types may require ≥2.2 µF for full-temperature stability.
Is SIP21107DVP-28-E3 still in production or available for new designs?
SIP21107DVP-28-E3 is End of Life (EOL) with last available purchase date of 31-Dec-2014. It remains available through authorized distributors' remaining inventory and Aetrix Electronics' legacy component program. SIP21107DVP-28-E3 is suitable for maintenance, repair, and legacy production but not recommended for new designs without formal obsolescence mitigation planning.
SIP21107DVP-28-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Package/Case:
- PowerPAK® TSC-75-6
- 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):
- 2.8V
- 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:
- PowerPAK® TSC75-6
SIP21107DVP-28-E3 FAQ
1.How can I place an order for SIP21107DVP-28-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21107DVP-28-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 SIP21107DVP-28-E3 reliable?
The price and inventory of SIP21107DVP-28-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIP21107DVP-28-E3 is usually 5 days.
3.What payment methods are accepted for SIP21107DVP-28-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21107DVP-28-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21107DVP-28-E3?
SIP21107DVP-28-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21107DVP-28-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 SIP21107DVP-28-E3?
For technical support, including SIP21107DVP-28-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21107DVP-28-E3 requirements.
6.How does Aetrix verify that SIP21107DVP-28-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21107DVP-28-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 SIP21107DVP-28-E3 meets industry standards.
7.What is the process for return or replacement of SIP21107DVP-28-E3?
All SIP21107DVP-28-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21107DVP-28-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 SIP21107DVP-28-E3 part is unused and in its original packaging.
Return procedure for SIP21107DVP-28-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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