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Vishay Siliconix SIP21107DR-26-E3
- Part No.:
- SIP21107DR-26-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SIP21107DR-26-E3.pdf
- Description:
- IC REG LINEAR 2.6V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,740
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Product details
Overview
SIP21107DR-26-E3 from Vishay Siliconix is a 2.6 V fixed-output, 150 mA low-dropout linear regulator with Power-OK (POK) error flag output, 135 mV dropout at full load, 1.0 % output voltage accuracy at 25 °C, and operation across -40 °C to +85 °C ambient. It delivers stable, low-noise power for RF-sensitive portable electronics requiring precise enable control and fault monitoring.
For engineers reviewing the SIP21107DR-26-E3 datasheet, SIP21107DR-26-E3 pinout, SIP21107DR-26-E3 application, or SIP21107DR-26-E3 equivalent, key selection criteria include POK threshold behavior (93 % nominal), shutdown current (<1 µA), auto-discharge resistance (100 Ω), thermal protection (160 °C), and compatibility with 1 µF ceramic output capacitors without external compensation.
Technical Context
The SIP21107DR-26-E3 uses an internal P-channel MOSFET pass transistor (0.9 Ω typical RDS(on)) and a 1.2 V bandgap reference to achieve tight regulation. Its error amplifier compares feedback against reference and drives the gate to maintain output within ±2.5 % over full temperature and load range.
The POK function is implemented via an open-drain NMOS comparator monitoring VOUT relative to VIN; it asserts low when VOUT falls below 90–96 % of nominal under-voltage conditions, with 1.5 % hysteresis and 40 µs delay from VOUT transition to POK response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.6 V ±2.5 % over -40 °C to +85 °C; enables direct replacement of 2.6 V logic rails without external resistors. |
| Dropout Voltage | 135 mV at 150 mA load; allows operation from 2.73 V input while maintaining regulation - critical for single-cell Li-ion or alkaline systems. |
| POK Threshold | 93 % nominal VOUT (2.418 V), with 90–96 % guaranteed range; provides reliable power-good signaling before downstream circuitry powers up. |
| Ground Current | 35 µA typical at 1 mA load; minimizes quiescent drain in battery-backed standby modes. |
| Shutdown Current | ≤1 µA maximum at 85 °C; ensures negligible battery leakage during extended sleep states. |
| Auto-Discharge Resistance | 100 Ω typical; discharges 1 µF output capacitor to <100 mV in <1 ms after EN deactivation - prevents residual voltage hold-up. |
| Thermal Shutdown | 160 °C junction activation with 20 °C hysteresis; protects against sustained overload or poor PCB thermal design. |
Pinout & Package
SIP21107DR-26-E3 is packaged in SC70-5L (2.1 mm × 2.1 mm × 0.95 mm), RoHS-compliant, with 5 active terminals and no NC pin in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable input | Active-high logic control; device enabled when ≥1.2 V applied, disabled when ≤0.4 V; must not float - tie to VIN if unused. |
| 2 - GND | Power ground | Primary return path for load current and thermal conduction; requires direct connection to large copper plane for thermal management. |
| 3 - VIN | Input supply | Accepts 2.2–6.0 V input; bypassed with 1 µF ceramic capacitor to minimize line noise and transient impedance. |
| 4 - VOUT | Regulated output | Delivers 2.6 V ±2.5 %; stable with ≥1 µF ceramic output capacitor; supports 330 mA peak current during startup. |
| 5 - POK | Open-drain error flag | Asserts low when VOUT drops below POK threshold; requires external pull-up to VIN or VOUT; sinks ≤0.5 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Noise-bypass capacitor not required | Eliminates need for external 10 nF BP capacitor - simplifies BOM and layout vs. SiP21106 family members. |
| Integrated POK (Power OK) output | Provides system-level power sequencing and fault detection without external comparators or voltage monitors. |
| Output auto-discharge on shutdown | 100 Ω internal NMOS pulls VOUT to ground within 1 ms - prevents unintended wake-up or latch-up in downstream logic. |
| Short-circuit and thermal protection | 330 mA typical current limit and 160 °C thermal shutdown prevent damage during faults - no external foldback circuitry needed. |
| Stable with low-ESR ceramic capacitors | Guaranteed stability with 1 µF X7R/Y7R ceramics; eliminates need for tantalum or aluminum electrolytics - reduces size and cost. |
Applications
| Cellular Handsets | Wireless Modems |
|---|---|
Use Scenario: Powering baseband processor I/O banks and RF front-end bias rails in compact GSM/UMTS handsets. IC Role / Device Role / Timing Role: Primary 2.6 V LDO supplying noise-sensitive analog sections; POK synchronizes boot sequence with PMIC. Use Value: 135 mV dropout extends usable battery range by >15 minutes per charge cycle; POK eliminates boot-time race conditions. | Use Scenario: Regulating 2.6 V supply for LTE modem transceivers and SIM interface circuitry in M2M modules. IC Role / Device Role / Timing Role: Standby-mode LDO with POK-driven reset assertion during brown-out events. Use Value: <1 µA shutdown current enables multi-year battery life in remote sensor nodes; auto-discharge prevents SIM card corruption on power loss. |
| Digital Cameras | Noise-Sensitive RF Systems |
Use Scenario: Supplying image sensor interface and flash controller logic in ultra-thin point-and-shoot cameras. IC Role / Device Role / Timing Role: Secondary LDO delivering clean 2.6 V to high-speed serial interfaces (e.g., MIPI D-PHY). Use Value: 1.0 % initial accuracy ensures compliance with sensor vendor voltage tolerance specs; SC70-5L footprint saves board space. | Use Scenario: Biasing low-noise amplifiers (LNAs) and mixer stages in GPS/Wi-Fi front-ends. IC Role / Device Role / Timing Role: Low-ripple, POK-monitored supply for RF signal chain components requiring strict voltage stability. Use Value: Absence of BP capacitor requirement avoids parasitic resonance; POK enables fast RF subsystem reset upon supply sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1826-2602E/DB | 2.6 V fixed, 300 mA output, 350 mV dropout at 300 mA, no POK pin, 65 µA quiescent current | Lacks power-good signaling; higher dropout limits use in low-VIN battery systems | Select when higher output current is required and POK is unnecessary; verify thermal derating for SC70-5L footprint. |
| TCS21107DVP-26-E3 | Same SiP21107 family, TSC75-6L package (1.6 mm × 1.6 mm), identical electrical specs, lower thermal resistance (131 °C/W) | Smaller footprint but requires different PCB land pattern; better thermal performance in high-power-density layouts | Select when board space is constrained and thermal margin is critical; validate solder reflow profile for 0.55 mm height. |
Compared with MCP1826-2602E/DB, SIP21107DR-26-E3 offers tighter dropout and integrated POK at lower quiescent current, enabling longer battery life and safer power sequencing. Against TCS21107DVP-26-E3, it trades thermal efficiency for broader distributor availability in SC70-5L form factor.
Availability
SIP21107DR-26-E3 is available at Aetrix Electronics and suitable for cellular handsets, wireless modems, digital cameras, and noise-sensitive RF systems requiring stable component supply despite end-of-life status.
Supply support for SIP21107DR-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 power ICs focused on efficiency, reliability, and miniaturization for demanding power management applications.
The SiP21107 series was engineered specifically for portable electronics needing low-noise, low-quiescent-current LDOs with integrated power-status monitoring - targeting battery-powered RF and imaging subsystems.
FAQ
What is the POK threshold voltage for SIP21107DR-26-E3?
The POK threshold for SIP21107DR-26-E3 is defined as 93 % of nominal VOUT, i.e., 2.418 V, with a guaranteed range of 90–96 % (2.34–2.496 V) over -40 °C to +85 °C. This threshold is referenced to VIN, and POK goes low when VOUT falls below this level due to dropout, overcurrent, or thermal shutdown. SIP21107DR-26-E3 requires an external pull-up resistor to VIN or VOUT for proper logic-level translation.
Does SIP21107DR-26-E3 require an external bypass capacitor?
No, SIP21107DR-26-E3 does not require an external noise-bypass capacitor - unlike the SiP21106 variant, which needs a 10 nF capacitor on the BP pin. The SIP21107DR-26-E3 integrates internal noise filtering and achieves stable operation with only the standard 1 µF input and output ceramic capacitors. This simplifies layout and reduces BOM count while maintaining 350 µV(rms) output noise (10 Hz–100 kHz).
What is the maximum allowable input voltage for SIP21107DR-26-E3?
The absolute maximum input voltage for SIP21107DR-26-E3 is 6.5 V, but the recommended operating range is 2.2 V to 6.0 V per the datasheet. Operation above 6.0 V risks exceeding safe power dissipation limits, especially in the SC70-5L package (θJA = 294 °C/W). For reliable long-term operation at 6.0 V input with 2.6 V output and 150 mA load, ambient temperature must remain below 55 °C to keep junction temperature below 125 °C.
How does the auto-discharge function work in SIP21107DR-26-E3?
When the EN pin is pulled low, SIP21107DR-26-E3 enters shutdown mode and activates an internal 100 Ω NMOS discharge path between VOUT and GND. This resistor discharges a 1 µF output capacitor from 2.6 V to <100 mV in under 1 ms, preventing residual voltage from powering downstream circuits or causing undefined logic states. The discharge path is automatically disabled when EN returns high, and SIP21107DR-26-E3 resumes regulation with 70 µs turn-on time.
Is SIP21107DR-26-E3 still manufacturable or supported?
SIP21107DR-26-E3 is End of Life (EOL) with last available purchase date of 31-Dec-2014 per Vishay document 74442 Rev. G. However, Aetrix Electronics maintains legacy inventory and offers traceable, tested units with full documentation. For new designs, Vishay recommends evaluating pin-compatible alternatives like the TCS21107DVP-26-E3 (TSC75-6L) or migrating to newer-generation LDOs with enhanced PSRR and lower quiescent current.
SIP21107DR-26-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- 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:
- SC-70-5
SIP21107DR-26-E3 FAQ
1.How can I place an order for SIP21107DR-26-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21107DR-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 SIP21107DR-26-E3 reliable?
The price and inventory of SIP21107DR-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 SIP21107DR-26-E3 is usually 5 days.
3.What payment methods are accepted for SIP21107DR-26-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21107DR-26-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21107DR-26-E3?
SIP21107DR-26-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21107DR-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 SIP21107DR-26-E3?
For technical support, including SIP21107DR-26-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21107DR-26-E3 requirements.
6.How does Aetrix verify that SIP21107DR-26-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21107DR-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 SIP21107DR-26-E3 meets industry standards.
7.What is the process for return or replacement of SIP21107DR-26-E3?
All SIP21107DR-26-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21107DR-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 SIP21107DR-26-E3 part is unused and in its original packaging.
Return procedure for SIP21107DR-26-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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