UCC24650DBVT Power Management ICs - PMIC by Texas Instruments

VOLTAGE MONITOR #1 SOT-23-5

Semiconductors - ICs>Power Management ICs - PMIC>Supervisors & Monitors
Status: Unknown
Series: -
RoHS: Unknown
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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.

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Specifications

Threshold Voltage -
No. of Supervisors / Monitors 1Monitors
Supply Voltage Min 4.5V
Supply Voltage Max 28V
Reset Type Open-Drain
Digital IC Case SOT-23
No. of Pins 5Pins
Delay Time -
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)

Alternative Descriptions

200-V wake-up monitor for fast transient primary-side regulation | Texas Instruments

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The UCC24650DBVT is listed under Semiconductors - ICs > Power Management ICs - PMIC > Supervisors & Monitors.

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This part has not been flagged as RoHS Compliant.

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