XC6209B292MR - 2.9V 150mA LDO Regulator SOT-25 | Torex
Teilenummer: XC6209B292MR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.3 | $0,30 |
| 10 | $0.27 | $2,70 |
| 100 | $0.21 | $21,00 |
| 500 | $0.17 | $85,00 |
| 1.000 | $0.14 | $140,00 |
XC6209B292MR Übersicht
An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is only marginally above the desired rail. Within the broader power-management hierarchy, LDOs sit beneath switching converters and below traditional NPN/PNP regulators; they trade conversion efficiency for low noise, fast transient response, and a minimal external bill of materials, which is why LDOs are almost always placed downstream of a switching pre-regulator to clean up residual ripple.
Key features of the XC6209B292MR include an output voltage accuracy of plus or minus 2 percent, a maximum output current of 150 mA, an ultra-low quiescent current of 25 uA typical, and built-in current-limit plus thermal-shutdown protection. Its CE pin enables shutdown mode that drops the quiescent current to less than 0.1 uA, supporting battery-powered duty-cycled loads. The device accepts input voltages up to 6 V and works with low-ESR ceramic output capacitors as small as 1 uF, simplifying PCB layout.
Internally, the XC6209B292MR uses a CMOS pass transistor with a precision bandgap reference and error amplifier. The series is offered in fixed output voltages from 0.9 V to 5.0 V in 0.1 V increments, with the '292' suffix here selecting the 2.9 V nominal rail and 'B' denoting the CE-active-high, low-quiescent variant.
Typical applications include cellular-phone and portable-electronics power rails, microcontroller core or I/O supplies, battery charger secondary rails, optical-module bias, and post-regulation after a switching converter. Designers favor the XC6209B292MR where the load demands a quiet, well-regulated 2.9 V source and board area is constrained.
When using this regulator, place the input and output ceramic capacitors as close as possible to the VIN and VOUT pins to suppress input-spike transients and to maintain loop stability. Avoid routing high-frequency switching traces near the feedback node to minimize noise injection.
This page combines datasheet, distributor pricing, parametric drop-in alternatives, and application design notes so engineers can evaluate and source the XC6209B292MR with confidence.
Drop-in-Alternativen für XC6209B292MR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit XC6209B292MR (gleiche Bauform und Footprint) – abweichend in Input Voltage Range, Operating Temperature, Output Capacitor, Output Type, Quiescent Current.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
XC6209B292MR-G
✅ Drop-In✓ Auf Lager
$0.23 / Stück
Datenblatt ansehen →XC6209B332MR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
XC6209B502MR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
XC6209B182MR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
S-812C33AMC-C2NT2G
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
NCP698SQ30T1G
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
RP111N281B-TR-FE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
XC6209B292MR Grenzwerte & elektrische Eigenschaften
| Ausgangstyp | Fixed (positive) |
| Nominal Output Voltage | 2.9 V |
| Output Voltage Accuracy | plus or minus 2 % |
| Maximaler Ausgangsstrom | 150 mA |
| Eingangsspannungsbereich | up to 6 V |
| Ruhestrom | 25 uA typical |
| Standby Current (CE = Low) | less than 0.1 uA |
| Betriebstemperatur | -40 C to +85 C |
| Gehäuse | SOT-25 (5-pin) |
| Montageart | Surface Mount |
| Output Capacitor | Low-ESR ceramic, 1 uF minimum |
| CE (Enable) Pin Logic | Active-high |
| Protection | Current limit, thermal shutdown |
| RoHS-Status | Compliant |
XC6209B292MR Pin-Konfiguration
| Pin 1 | VIN — Input supply voltage (up to 6 V) |
| Pin 2 | GND — Ground |
| Pin 3 | CE — Chip enable (active high) |
| Pin 4 | NC — No internal connection on B-series |
| Pin 5 | VOUT — Regulated 2.9 V output |
Typische Anwendungen
XC6209B292MR ist geeignet für 7 Anwendungs: Portable / Battery-Powered Device Rails, Cellular Phone Sub-Rail Generation, Optical Module Bias Supply, Microcontroller Core and I/O Rails, Sensor Front-End Power, Post-Regulation After a Switching Converter, Battery Charger Secondary Rails.
Portable / Battery-Powered Device Rails
The XC6209B292MR's 25 uA quiescent current and sub-0.1 uA standby current make it ideal for portable and battery-powered loads that duty-cycle between active and sleep states. The 2.9 V fixed output is well suited for low-power MCUs, Bluetooth Low Energy SoCs, and sensor front-ends that operate from a single Li-ion or two-AA cells. Placed near the battery terminal, it provides a clean rail that does not drain the cell during idle periods. Designers should budget worst-case VIN minus VOUT times IOUT dissipation to ensure the SOT-25 package stays within its 0.5 W thermal envelope.
Empfohlen
Cellular Phone Sub-Rail Generation
Cellular handsets and feature phones use the XC6209B292MR as a post-LDO after a switching converter to supply 2.9 V rails for camera modules, LCD bias, or RF PA pre-drivers. The LDO cleans switching ripple that would otherwise couple into the PA or ADC reference. The 150 mA rating covers most sub-rail demands in feature-phone architectures. Use a 1 uF X5R input cap and 1 uF X5R output cap within 5 mm of the IC pins per the Torex layout note.
Empfohlen
Optical Module Bias Supply
SFF/SFP optical modules and fiber-optic transceivers often require a 2.9 V bias for the laser driver or limiting amplifier. The XC6209B292MR provides this rail from a 3.3 V host supply, holding the LDO inside its low-dropout region. The low output noise helps prevent laser-driver threshold jitter that would degrade optical eye margin. Designers should verify the 150 mA budget covers the laser's peak bias and modulation currents combined.
Empfohlen
Microcontroller Core and I/O Rails
Many low-voltage MCUs, including several ARM Cortex-M0 and 8051 cores, accept supply rails from 2.7 V down to 1.8 V. The XC6209B292MR's 2.9 V fixed output fits neatly above this floor with margin to ride out battery droop. The 150 mA rating easily covers core plus I/O plus peripheral current. Place the regulator close to the MCU's VDD pin to minimize IR drop on the PCB trace.
Empfohlen
Sensor Front-End Power
MEMS accelerometers, gyroscopes, and environmental sensors draw only a few milliamps but need a low-noise supply. The XC6209B292MR delivers a clean 2.9 V to such sensors with the 1 uF ceramic output cap suppressing any high-frequency noise. The CE pin allows the host MCU to power-gate the sensor chain during deep-sleep, dropping Iq below 0.1 uA.
Empfohlen
Post-Regulation After a Switching Converter
A common power-architecture pattern is a switching buck regulator followed by an LDO for the noise-sensitive analog or RF rails. The XC6209B292MR serves as the post-LDO stage, removing switching ripple that would otherwise couple into audio codecs, ADCs, or RF synthesizers. The 6 V maximum input handles typical 3.3 V or 5 V upstream rails comfortably. Choose the XC6209B292MR when the analog load needs 2.9 V at less than 150 mA.
Empfohlen
Battery Charger Secondary Rails
Li-ion battery charger ICs sometimes need a clean low-voltage rail to bias internal references or status LEDs. The XC6209B292MR provides that rail from the system 3.3 V or 5 V bus. The 25 uA Iq does not steal meaningful current from the charger budget, and the small SOT-25 footprint fits beside the charger IC without crowding the PCB.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für XC6209B292MR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | XC6209B292MR-G | XC6209B332MR | XC6209B502MR | S-812C33AMC-C2NT2G | NCP698SQ30T1G | RP111N281B-TR-FE |
|---|---|---|---|---|---|---|---|
| Package | SOT-25 | SOT-25 - same | SOT-25 - same | SOT-25 - same | SOT-23-5 - same | SOT-23-5 - same | SOT-23-5 - same |
| Brand | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | ABLIC | onsemi | NXP Semiconductors |
| Output Voltage | 2.9 V | 2.9 V | 3.3 V | 5.0 V | 3.3 V | 3.0 V | 2.8 V |
| Maximum Output Current | 150 mA | 150 mA | 150 mA | 150 mA | 50 mA | 200 mA | 150 mA |
| CE Pin Logic | Active-high | Active-high | Active-high | Active-high | Active-high | Active-high | Active-high |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Wichtigste Unterscheidungsmerkmale
- Same-family 2.9 V option within Torex XC6209B (vs. XC6209B332MR)
- Higher output current than ABLIC equivalent (vs. S-812C33AMC-C2NT2G)
- Higher output current margin than NXP equivalent (vs. RP111N281B-TR-FE)
Designhinweise
Place the input capacitor (1 uF X5R minimum) within 5 mm of the VIN pin and the output capacitor (1 uF X5R minimum) within 5 mm of the VOUT pin per the Torex XC6209 datasheet layout guideline. Use short, wide copper pours to minimize parasitic inductance that could destabilize the control loop. Route the CE pin away from switching nodes to avoid noise injection into the enable logic.
Estimated: at VIN=3.6 V (single-cell Li-ion), VOUT=2.9 V, and IOUT=150 mA, the package dissipation is (3.6 minus 2.9) times 0.150 = 0.105 W. The SOT-25 has a theta_JA of about 250 C/W, so the junction rises roughly 26 C above ambient - within the 125 C limit. At VIN=5.5 V and 150 mA, dissipation rises to 0.39 W and junction temperature climbs about 98 C, still safe but with reduced margin.
Do not omit the output capacitor or substitute a high-ESR tantalum part; the XC6209B requires a low-ESR ceramic (X5R/X7R) output cap of at least 1 uF for loop stability per the Torex datasheet. Do not exceed the 6 V absolute-maximum VIN. The CE pin must be tied to VIN if shutdown is not used - leaving it floating can cause indeterminate output. Avoid running the part in dropout (VIN minus VOUT less than 200 mV) at full load because PSRR degrades.
Compliance-Informationen
The XC6209B292MR is supplied in lead-free matte-tin finish; the '-G' suffix denotes the RoHS-compliant tape-and-reel packaging option. AEC-Q100 qualification is not applicable for this consumer-grade LDO. Always confirm the latest compliance certificate with the Torex distributor of record.
