0
ACTIVE
Rating |
Automotive |
Topology |
Buck |
Iout (max) (A) |
8 |
Vin (max) (V) |
17 |
Vin (min) (V) |
3 |
Vout (max) (V) |
5.5 |
Vout (min) (V) |
0.8 |
Features |
Enable, Frequency synchronization, Low Noise, Output discharge, Over Current Protection, Power good, Soft Start Adjustable, Spread Spectrum, Synchronous Rectification, UVLO Fixed |
Control mode |
current mode |
Operating temperature range (°C) |
-55 to 150 |
Iq (typ) (A) |
0.005 |
Duty cycle (max) (%) |
100 |
TI functional safety category |
Functional Safety-Capable |
VQFN-HR (RPY)-14-7.5 mm² 2.5 x 3
The automotive-qualifiedTPS6291x-Q1 devices are a family of high-efficiency, low noise, and low ripple current mode synchronous buck converters. The devices are designed for noise sensitive applications that normally use an LDO for post regulation such as high-speed ADCs, clock and jitter cleaner, serializer, deserializer, and radar applications.
To reduce the output voltage ripple, the device loop compensation is designed to operate with an optional second-stage ferrite bead L-C filter. Low-frequency noise levels, similar to a low-noise LDO, are further achieved by filtering the internal voltage reference with a capacitor connected to the NR/SS pin. Combined, these features allow for an output voltage ripple below 10µVRMS.
The device operates at a fixed switching frequency of 2.2MHz, 1.4MHz, or 1MHz, and can be synchronized to an external clock. An optional spread spectrum modulation scheme spreads the DC/DC switching frequency over a wider span, which lowers the mixing spurs.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
