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Features for the TPS2052B

70-mΩ High-Side MOSFET
500-mA Continuous Current
Thermal and Short-Circuit Protection
Accurate Current Limit
(0.75 A Minimum, 1.25 A Maximum)
Operating Range: 2.7 V to 5.5 V
0.6-ms Typical Rise Time
Undervoltage Lockout
Deglitched Fault Report (OC)
No OC Glitch During Power Up
Maximum Standby Supply Current:
1-µA (Single, Dual) or 2-µA (Triple, Quad)
Ambient Temperature Range: –40°C to 85°C
UL Recognized, File Number E169910
Additional UL Recognition for TPS2042B and TPS2052B for Ganged Configuration

Description for the TPS2052B

The TPS20xxB power-distribution switches are intended forapplications where heavy capacitive loads and short circuits are likely to be encountered. Thesedevices incorporates 70-mΩ N-channel MOSFET power switches for power-distribution systems thatrequire multiple power switches in a single package. Each switch is controlled by a logic enableinput. Gate drive is provided by an internal charge pump designed to control the power-switch risetimes and fall times to minimize current surges during switching. The charge pump requires noexternal components and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, thedevice limits the output current to a safe level by switching into a constant-current mode, pullingthe overcurrent (OCx) logic output low. When continuous heavy overloads andshort circuits increase the power dissipation in the switch, causing the junction temperature torise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermalshutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures that theswitch remains off until valid input voltage is present. This power-distribution switch is designedto set current limit at 1 A (typical).

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-R & D Director: formulate the company’s long-term R & D plan and grasp the direction of research and development; Guide and supervise r&d department to implement company r&d strategy and annual R&D plan; Control the progress of product development and adjust the plan; Set up excellent product research and development team, audit and training related technical personnel.

R & D Manager: make new product R & D plan and demonstrate the feasibility of the plan; Supervise and manage the progress and quality of r&d work; Research new product development and propose effective solutions according to customer requirements in different fields

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