Hitachi 55293DLB, Service Manual

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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 V. The device also features an adjustable soft start time. The TPS54328 is available in the 8-pin DDA and
10-pin DRC packages, and is designed to operate over the ambient temperature range of -40C to 85C.
Features

D-CAP2 Mode Enables Fast Transient Response

Low Output ripple and Allows Ceramic Output Capacitor

Wide V
IN
Input Voltage Range: 4.5 V to 18 V

Output Voltage Range: 0.76 V to 7 V

Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications- 100 mOhm (High
Side) and 70 mOhm (Low Side)

High Efficiency, less than 10 mikroAmper at shutdown

High Initial Bandgap Reference Accuracy

Adjustable Soft Start

Pre-Biased Soft Start

700-kHz Switching Frequency (f
SW
)

Cycle By Cycle Over Current Limit

Auto-Skip Eco-mode for High Efficiency at Light Load
Applications

Wide Range of Applications for Low Voltage System

Digital TV Power Supply

High Definition Blu-ray Disc Players

Networking Home Terminal

Digital Set Top Box(STB)
Table: Recommended operating conditions
Figure: Pin Description