0
ACTIVE
Rating |
Catalog |
Topology |
Buck |
Iout (max) (A) |
5 |
Vin (max) (V) |
6 |
Vin (min) (V) |
2.9 |
Vout (max) (V) |
4.2 |
Vout (min) (V) |
0.6 |
Features |
Enable, Frequency synchronization, Light load efficiency, Output discharge, Power good, Pre-Bias Start-Up, Synchronous Rectification |
Control mode |
Voltage mode |
Operating temperature range (°C) |
-40 to 85 |
Iq (typ) (A) |
0.00032 |
Duty cycle (max) (%) |
99 |
VQFN (RGT)-16-9 mm² 3 x 3
The TPS53321 device provides a fully integrated 3-V to 5-V VIN integrated synchronous FET converter solution with 16 total components in 200 mm2 of PCB area. Due to the low ON-resistance and TIs Proprietary SmoothPWM™ skip mode of operation, it enables 96% peak efficiency and over 90% efficiency at loads as light as 100 mA. It requires only two 22-µF ceramic output capacitors for a power dense 5-A solution.
The TPS53321 features a 1.1-MHz switching frequency, skip mode operation support, prebias start-up, internal soft start, output soft discharge, internal VBST switch, power good, EN/input UVLO, overcurrent, overvoltage, undervoltage, and overtemperature protections, and all ceramic output capacitor support. It supports supply voltage from 2.9 V to 3.5 V and conversion voltage from 2.9 V to 6 V. The output voltage is adjustable from 0.6 V to 0.84 V × VIN.
The TPS53321 is available in the 3 mm × 3 mm 16-pin QFN package (Green RoHs compliant and Pb free) and operates between –40°C and 85°C.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
