The TPS2065CDBVR from Texas Instruments is a 1A current-limited power distribution switch with auto-retry, 50mOhm RDS(on), and adjustable current limit in SOT-23-5 package.<\/p>\n
| Funci\u00f3n<\/td>\n | Current-Limited Power Distribution Switch<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| Input Voltage<\/td>\n | 2.7V to 5.5V<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| Current Limit<\/td>\n | 0.5A to 1.5A (adjustable via external resistor)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| RDS(on)<\/td>\n | 50 mOhm (typical)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| Fault Response<\/td>\n | Auto-retry (continuous retry after fault clears)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| Fault Output (OC)<\/td>\n | Active low, open-drain<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| Enable<\/td>\n | Active high<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| UVLO<\/td>\n | Yes (2.4V typical)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| Thermal Shutdown<\/td>\n | Yes<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| Paquete<\/td>\n | SOT-23-5 (DBV)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||
| Temperatura de funcionamiento<\/td>\n | -40 to +85 C<\/td>\n<\/tr>\n<\/table>\nCaracter\u00edsticas<\/h2>\nAplicaciones<\/h2>\nProduct Overview The TPS2065CDBVR from Texas Instruments is a 1A current-limited power distribution switch with auto-retry, 50mOhm RDS(on), and adjustable current limit in SOT-23-5 package. Key Specifications Function Current-Limited Power Distribution Switch Input Voltage 2.7V to 5.5V Current Limit 0.5A to 1.5A (adjustable via external resistor) RDS(on) 50 mOhm (typical) Fault Response Auto-retry (continuous retry […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[],"chip_brand":[138],"class_list":["post-3817","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"1A adjustable current-limit switch, 50mOhm, auto-retry, SOT-23-5","date_code":"","package_case":"SOT-23-5 (2.9 x 1.6 x 1.1 mm, DBV package)","in_stock":10288,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps2065c.pdf","price":"$0.55 @ 1ku","product_introduction":"The TPS2065CDBVR from Texas Instruments is a single-channel current-limited power distribution switch in a compact SOT-23-5 package. The device integrates a 50mOhm N-channel MOSFET power switch with an adjustable current limit (0.5A to 1.5A), making it suitable for USB port power switching, hot-plug applications, and general-purpose power rail protection. The 50mOhm on-resistance is exceptionally low for a SOT-23-5 packaged device, resulting in only 50mV voltage drop at 1A load current, which is critical for maintaining USB voltage compliance (4.75V minimum at the connector from a 5V supply). The adjustable current limit is set by a single external resistor from the ILIM pin to GND, allowing the designer to customize the current limit for different load requirements without changing the IC. The auto-retry fault response means that after a fault (overcurrent or thermal shutdown), the switch automatically attempts to restart after a cooldown period, rather than latching off and requiring a manual reset or power cycle. This is ideal for applications with capacitive loads (like USB devices) that may draw high inrush current during hot-plug. The open-drain OC (OverCurrent) flag provides a fault signal to the host MCU, while the auto-retry ensures the switch eventually turns on once the fault clears. The 2.7V to 5.5V input voltage range covers both 3.3V and 5V systems.","working_principle":"The TPS2065CDBVR operates as a current-limited high-side power switch with auto-retry. Key subsystems include: (1) N-Channel MOSFET Switch - a low-RDS(on) N-channel MOSFET with an internal charge pump generating a gate voltage above VIN to fully enhance the switch; the 50mOhm RDS(on) provides low voltage drop at full load; (2) Current Limit - the current is sensed across the MOSFET; when the current exceeds the programmed limit (set by the external resistor on ILIM), the gate drive is reduced to limit the current; the current limit accuracy is +\/-20% over temperature; the auto-retry mode means the switch continues to limit current and retry periodically rather than latching off; (3) Auto-Rtry Logic - when a fault condition (overcurrent or thermal shutdown) is detected, the switch turns off for a retry period (typically 50ms), then turns on again; if the fault persists, the cycle repeats indefinitely; the duty cycle during retry is approximately 0.5% (50ms off, 250us on), limiting average power dissipation during a sustained fault; (4) Thermal Shutdown - when the junction temperature exceeds approximately 140C, the switch is turned off to prevent damage; the switch automatically restarts when the temperature drops below the hysteresis threshold; (5) OC Flag - the open-drain OC pin is asserted low during any fault condition (overcurrent, thermal shutdown, or UVLO); the open-drain configuration allows multiple TPS2065C devices to share a common fault line with a single pull-up resistor.","pin_description":"
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