UCC24650DBVT Part Information
The UCC24650 is an easy-to-use secondary-side voltage monitor that periodically measures its own VDD voltage. A relative droop of 3% from the previous reading triggers a wake-up alert signal to a receiving primary-side regulation (PSR) controller. Its low-power consumption helps achieve <5-mW ZeroPower standby loss in many applications. An internal 200-V MOSFET switch is applied across a ground-referenced rectifier to provide a currentlimited pulse to the flyback transformer secondary winding, which couples the signal to the primary-side controller. This signal is repeated at 33 kHz until controller-driven switching activity is detected. Relative-droop detection allows scaling to any voltage between 5 and 28 V. The wake-up alert function allows very-low standby frequency to minimize switching loss and reduction of output capacitance needed to respond to a heavy load step. This monitor is used with a controller capable of detecting the wake-up signal, such as the UCC28730 PSR flyback controller. The UCC24650 also provides an enable and disable signal which can be used to control a secondary-side circuit during no-load conditions to reduce standby power loss. Such a circuit may be a synchronous rectifier controller or a relay driver, for example.
- 200-V Wake-Up Switch
- 3% Voltage Droop Detection (Patent Pending)
- 5-V to 28-V Output Monitoring Capability
- <50 u00b5A Device Current Consumption (Typical)
- Enables Excellent Load Transient Performance and Zero Standby Power
- Enables Smallest Output Capacitor for Tight u0394VOUT
- Enables and Disables SR Controller, Relay Control, or Other Secondary Circuits
- No External Components Required
- SOT-23 5-Pin Package
|No. of Supervisors / Monitors||1Monitors|
|Supply Voltage Min||4.5V|
|Supply Voltage Max||28V|
|Digital IC Case||SOT-23|
|No. of Pins||5Pins|
|Operating Temperature Min||-40°C|
|Operating Temperature Max||125°C|
|Automotive Qualification Standard||-|
|RoHS Phthalates Compliant||Yes|
|MSL||MSL 1 - Unlimited|
|SVHC||No SVHC (27-Jun-2018)|
Alternative Part Descriptions
- 200-V wake-up monitor for fast transient primary-side regulation | Texas Instruments
Frequently Asked Questions
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What category does UCC24650DBVT fall under?
The UCC24650DBVT is listed under Semiconductors - ICs > Power Management ICs - PMIC > Supervisors & Monitors.
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You can view similar parts to UCC24650DBVT when available in the Supervisors & Monitors range under the specifications section at the bottom of the details page.
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Yes. This part has been flagged as RoHS Compliant by Farnell.
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