0
ACTIVE
Rating |
HiRel Enhanced Product |
Topology |
Buck |
Iout (max) (A) |
5 |
Vin (max) (V) |
36 |
Vin (min) (V) |
5.5 |
Vout (max) (V) |
31 |
Vout (min) (V) |
1.22 |
Features |
Enable, Over Current Protection |
Control mode |
Voltage mode |
Operating temperature range (°C) |
-55 to 125 |
Iq (typ) (A) |
0.003 |
Duty cycle (max) (%) |
89 |
HSOIC (DDA)-8-29.4 mm² 4.9 x 6
Integrated MOSFET Switch(1) Additional temperature ranges are available - contact factory
As a member of the SWIFT family of DC/DC regulators, the TPS5450 is a high-output-current PWM converter that integrates a low-resistance high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions, an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V, an internally set slow-start circuit to limit inrush currents, and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection, and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally compensated.
The TPS5450 device is available in a thermally enhanced, 8-pin SOIC PowerPAD package. TI provides evaluation modules and software tools to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.
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