0
ACTIVE
Rating |
Catalog |
Topology |
Buck |
Iout (max) (A) |
4 |
Vin (max) (V) |
18 |
Vin (min) (V) |
4.5 |
Vout (max) (V) |
7 |
Vout (min) (V) |
0.76 |
Features |
Enable, Light-load efficiency, Soft-start adjustable, Synchronous rectification |
Control mode |
D-CAP2 |
Operating temperature range (°C) |
-40 to 85 |
Iq (typ) (A) |
0.00095 |
Duty cycle (max) (%) |
65 |
HSOIC (DDA)-8-29.4 mm² 4.9 x 6
The TPS54428 is an adaptive on-time D-CAP2™ mode synchronous buck converter.
The TPS54428 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution.
The main control loop for the TPS54428 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components.
The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads.
Eco-mode™ allows the TPS54428 to maintain high efficiency during lighter load conditions.
The TPS54428 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input.
The output voltage can be programmed between 0.76 V and 7.0 V.
The device also features an adjustable soft start time.
The TPS54428 is available in 8-pin DDA package and 10-pin DRC packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
