XC9142A55CER-G - 0.5A Synchronous Step-Up DC/DC | Torex Semiconductor
Teilenummer: XC9142A55CER-G ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.92 | $0,92 |
| 10 | $0.83 | $8,30 |
| 100 | $0.72 | $72,00 |
| 500 | $0.61 | $305,00 |
| 1.000 | $0.55 | $550,00 |
XC9142A55CER-G Übersicht
A boost (step-up) DC/DC converter is a switched-mode power supply topology that produces an output voltage higher than its input voltage. Within the broader taxonomy it is a DC/DC switching regulator, a subcategory of voltage regulators, itself part of the power management IC family. Boost converters pulse-charge an inductor through a switch, then release the stored energy into an output capacitor through a rectifier; synchronous designs replace the rectifier diode with a MOSFET to cut conduction losses, especially at light load.
Key features of the XC9142A55CER-G include a fixed 5.5V output (no external feedback resistors), 1.2 MHz (typical) PWM switching frequency that allows the use of small inductors and ceramic capacitors, internal soft-start, current-mode PWM control, and built-in protection features including over-current protection (OCP), thermal shutdown (TSD), and under-voltage lockout (UVLO). The USP-6C package has an exposed thermal pad that conducts heat directly into the copper pour, enabling the 0.8A output in the small 1.8 x 2.0 mm footprint.
Typical applications include single-cell Li-ion to 5V boost supplies for IoT sensor nodes, USB-powered peripherals, low-power MCUs, and battery backup circuits. The fixed-output configuration simplifies BOM and PCB layout compared to adjustable-output alternatives. The integrated synchronous switch removes the cost and PCB area of an external rectifier diode. Designers should select a low-DCR inductor (typically 2.2 uH to 4.7 uH) and X5R/X7R ceramic input and output capacitors (typically 10 uF to 22 uF) for stable operation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für XC9142A55CER-G – 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 XC9142A55CER-G (gleiche Bauform und Footprint) – abweichend in Input Voltage Range, Operating Temperature, Package, Switching Frequency, Topology.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
XC9142A50CER-G
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
XC9142A33CER-G
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
XC9142A18CER-G
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
XC9141A55CER-G
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
TPS61220DCK
✅ Drop-In✓ Auf Lager
$0.78 / Stück
Datenblatt ansehen →TPS61240DRVT
✅ Drop-In✓ Auf Lager
$0.92 / Stück
Datenblatt ansehen →XC9142A55CER-G Grenzwerte & elektrische Eigenschaften
| Topologie | Synchronous Step-Up (Boost) |
| Ausgangsspannung | 5.5 V (fixed) |
| Output Current Capability | 0.8 A |
| Switch Current Limit | 500 mA |
| Eingangsspannungsbereich | 0.65 V to 6 V |
| Start-up Voltage | 0.9 V (typical) |
| N-channel MOSFET Rds(on) | 0.3 ohm (TYP.) |
| P-channel MOSFET Rds(on) | 0.4 ohm (TYP.) |
| Schaltfrequenz | 1.2 MHz (TYP.) |
| Control Method | Current-mode PWM |
| Betriebstemperatur | -40 C to +85 C |
| Gehäuse | USP-6C (USPC-6) 1.8 x 2.0 mm, exposed pad |
| Montageart | Surface Mount |
| Built-in Protections | OCP, TSD, UVLO |
| RoHS-Status | Compliant |
XC9142A55CER-G Pin-Konfiguration
| Pin 1 | CE — Chip enable (active high); drive high to enable, low to disable |
| Pin 2 | GND — Ground reference |
| Pin 3 | FB — Feedback / VOUT sense for fixed variants |
| Pin 4 | Lx — Inductor switch node |
| Pin 5 | VIN — Input supply voltage |
| Pin 6 | VOUT — Regulated output voltage (5.5 V fixed) |
Typische Anwendungen
XC9142A55CER-G ist geeignet für 6 Anwendungs: Single-Cell Li-ion to 5V Boost Supply, IoT Sensor Node Power, USB Peripheral 5V Rail, Battery Backup Power Supply, Wearable Device Power, Industrial Sensor and 4-20mA Loop Power.
Single-Cell Li-ion to 5V Boost Supply
The XC9142A55CER-G is well suited to single-cell Li-ion to 5V boost conversion for USB-powered peripherals and low-power MCUs. Its 0.65V to 6V input range tracks the Li-ion discharge curve from full charge (4.2V) to cut-off (3.0V) while maintaining the fixed 5.5V output. The 1.2MHz PWM switching permits a compact 2.2uH inductor and 10uF ceramic input/output capacitors. Unlike a non-synchronous boost, the integrated 0.4 ohm P-channel synchronous rectifier eliminates the external Schottky diode, reducing BOM cost and PCB area in USB OTG, IoT, and wearable designs.
Empfohlen
IoT Sensor Node Power
The XC9142A55CER-G fits IoT sensor nodes that must operate from a single AA or AAA alkaline cell down to deeply discharged levels. Its 0.9V guaranteed start-up enables boot-up from nearly-dead cells where competing parts refuse to start, while its 0.65V minimum operating voltage extends runtime. The synchronous topology delivers 90%+ efficiency, and the 1.2MHz switching frequency keeps switching noise out of common 433MHz/868MHz/915MHz sub-GHz bands. A typical application pairs the converter with an STM32L0 or similar low-power MCU; the CE pin enables duty-cycled sleep for sub-uA quiescent current draw.
Empfohlen
USB Peripheral 5V Rail
The XC9142A55CER-G's fixed 5.5V output (with 5% tolerance down to 5.225V) provides headroom to compensate for USB cable drop, feeding USB peripherals that nominally require 5.0V. The fixed-output configuration eliminates the feedback resistor divider, saving two components and reducing accuracy errors from resistor tolerance. The 0.8A output current capability supports downstream devices such as USB-to-UART bridges, NFC readers, and BLE modules. The 1.2MHz switching frequency simplifies EMI compliance by allowing all harmonics above 30MHz to fall under FCC/CISPR 22 radiated limits with simple filtering.
Empfohlen
Battery Backup Power Supply
For battery backup and energy-harvesting applications, the XC9142A55CER-G provides a regulated 5.5V rail from a single-cell supercapacitor, NiMH, or Li-ion backup source. The integrated UVLO prevents deep discharge by disabling the converter below 0.65V input, protecting the backup cell. OCP and TSD shut down the part under fault conditions. The synchronous design reduces quiescent loss versus diode-rectified alternatives. Typical use cases include RTC backup, SRAM retention, and emergency lighting where the converter must cold-start from a depleted cell.
Empfohlen
Wearable Device Power
The XC9142A55CER-G's 1.8 x 2.0 mm USP-6C footprint is well matched to wearable form factors where PCB real estate is scarce. The 0.8A output capability supports high-brightness LED drivers, BLE SoCs, and small OLED displays powered from a coin-cell or Li-Po battery. The 1.2MHz switching permits inductor selection as small as 2.2uH in a 2.0 x 2.5 mm footprint, and the synchronous topology eliminates the rectifier diode that would otherwise steal precious PCB area. The exposed thermal pad conducts heat into the PCB copper pour for reliable operation at continuous loads.
Empfohlen
Industrial Sensor and 4-20mA Loop Power
In industrial sensor applications, the XC9142A55CER-G generates a stable 5.5V rail from a 24V bus through a pre-regulator, or from a lower-voltage loop supply. The 0.65V to 6V input range covers typical 3.3V MCU rails for direct point-of-load boosting. The fixed-output configuration simplifies design verification for IEC 61508 SIL-rated systems by eliminating feedback resistor tolerance stack-up. The OCP/TSD/UVLO protection set reduces external fuse and supervisory component count. The wide -40C to +85C operating range suits factory automation, building controls, and outdoor sensor installations.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für XC9142A55CER-G – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | XC9142A50CER-G | XC9142A33CER-G | XC9142A18CER-G | XC9141A55CER-G | TPS61220DCK | TPS61240DRVT |
|---|---|---|---|---|---|---|---|
| Brand | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | Texas Instruments | Texas Instruments |
| Package | USP-6C (USPC-6) 1.8 x 2.0 mm | USP-6C (USPC-6) 1.8 x 2.0 mm - same | USP-6C (USPC-6) 1.8 x 2.0 mm - same | USP-6C (USPC-6) 1.8 x 2.0 mm - same | USP-6C (USPC-6) 1.8 x 2.0 mm - same | SC-70-6 (DCK) 2.0 x 2.0 mm | SON-6 (DRV) 2.0 x 2.0 mm |
| Topology | Synchronous Step-Up (Boost) | Synchronous Step-Up (Boost) | Synchronous Step-Up (Boost) | Synchronous Step-Up (Boost) | Synchronous Step-Up (Boost) | Synchronous Step-Up (Boost) | Synchronous Step-Up (Boost) |
| Output Voltage | 5.5 V (fixed) | 5.0 V (fixed) | 3.3 V (fixed) | 1.8 V (fixed) | 5.5 V (fixed) | Adjustable up to 5.5 V | Adjustable up to 5.5 V |
| Output Current | 0.8 A | 0.8 A | 0.8 A | 0.8 A | 0.8 A | 0.5 A (switch current) | 0.5 A (switch current) |
| Input Voltage Range | 0.65 V to 6 V | 0.65 V to 6 V | 0.65 V to 6 V | 0.65 V to 6 V | 0.65 V to 6 V | 0.7 V to 5.5 V | 2.3 V to 5.5 V |
| Switching Frequency | 1.2 MHz (TYP.) | 1.2 MHz (TYP.) | 1.2 MHz (TYP.) | 1.2 MHz (TYP.) | 1.2 MHz (TYP.) | Up to 2 MHz | Up to 2 MHz |
| Synchronous Rectifier | Yes (0.4 ohm P-MOSFET integrated) | Yes (0.4 ohm P-MOSFET integrated) | Yes (0.4 ohm P-MOSFET integrated) | Yes (0.4 ohm P-MOSFET integrated) | Yes (0.4 ohm P-MOSFET integrated) | Yes | Yes |
| Built-in Protections | OCP, TSD, UVLO | OCP, TSD, UVLO | OCP, TSD, UVLO | OCP, TSD, UVLO | OCP, TSD, UVLO | OCP, TSD, UVLO | OCP, TSD, UVLO |
Wichtigste Unterscheidungsmerkmale
- Integrated synchronous rectifier removes external Schottky diode (vs. TPS61220DCK (non-sync alternatives))
- Tiny 1.8 x 2.0 mm USP-6C footprint (vs. TPS61240DRVT (2.0 x 2.0 mm SON-6))
- 0.65V minimum operating voltage extends battery runtime (vs. TPS61240DRVT (2.3V minimum input))
Designhinweise
The USP-6C exposed thermal pad must be soldered directly to a copper pour on the top layer of the PCB. Use at least 10 mm x 10 mm of 1 oz copper as the GND pour; connect it to the system GND plane with at least 4 thermal vias (0.3 mm drill, 0.6 mm pad). Insufficient thermal connection will trigger TSD at loads above 0.3 A.
Route the Lx switch node (pin 4) trace as short and wide as possible to minimize parasitic inductance and EMI. Place the 2.2 uH to 4.7 uH inductor within 3 mm of pin 4. Keep input and output capacitors on opposite sides of the inductor to minimize AC current loop length. Avoid routing sensitive analog traces directly beneath the Lx node or inductor.
Select an inductor with saturation rating at least 30% above the peak switch current (approximately 1 A for the XC9142A55CER-G under worst-case load). Low-DCR (under 50 milliohm) shielded inductors in the 2.2 uH to 4.7 uH range minimize conduction loss and radiated EMI. Ceramic X5R/X7R input and output capacitors of 10 uF to 22 uF (16 V rating) provide stable loop compensation.
Do not exceed 6 V on the VIN pin; this includes transient overshoot from input source impedance and inductor ringing. Add a TVS or Zener clamp on VIN if the input is hot-plugged from a charged cable. Do not operate with VIN below 0.65 V once started; below this threshold UVLO will disable the output. Do not load VOUT below VOUT minus 0.5 V with VIN present; reverse current can damage the part.
Estimated: at VIN=3.3V, VOUT=5.5V, IOUT=0.5A, the converter dissipates approximately (Vin-VOUT) x IOUT x (1-eta)/eta, yielding roughly 0.4W to 0.5W internal dissipation. Theta_J on the USP-6C exposed pad is approximately 60 C/W with the recommended copper area, resulting in a 24C to 30C junction temperature rise above 25C ambient, well below the 150C TSD threshold.
Compliance-Informationen
RoHS and lead-free status per Torex XC9142 series datasheet. AEC-Q100 qualification not applicable for consumer-grade USP-6C package; automotive designs should consider AEC-Q100-qualified alternatives.
