7A SWITCHING REGULATOR

DESCRIPTION The L4977A is a stepdown monolithic power switching regulator delivering 7A at a voltage variable from 5.1 to 40V. Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4977A inc

7 A switching regulator

• UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON\n• INPUT/OUTPUT SYNC PIN\n• VERY HIGH EFFICIENCY\n• PWM LATCH FOR SINGLE PULSE PER PERIOD\n• THERMAL SHUTDOWN\n• SWITCHING FREQUENCY UP TO 500KHz\n• CONTINUOUS MODE OPERATION\n• RESET AND POWER FAIL FUNCTIONS• PRECISE 5.1V ± 2% ON CHIP REFERENCE\n;

Surge Clamping, Transient Overvoltage Suppressor Bidirectional

Description: The NTE4900 series of silicon Transient Suppressors designed to protect voltage sensitive components from high energy voltage transients. Transient over voltage suppressor devices have become very important as a consequence of their high surge capability, extremely fast response time

Besic

2 GENERAL DESCRIPTION The SAA4977H is a video processing IC providing analog YUV interfacing, video enhancing features, memory controlling and an embedded 80C51 microprocessor core. It is applicable especially for field rate up-conversion (50 to 100 Hz or 60 to 120 Hz) in cooperation with a 2.9

6.8 ??390 VOLTS ZENER DIODES

FEATURES: • Hermetically Glass Sealed • High Power Dissipation 5W • Tight Voltage Tolerance 5 • For other Voltage, Power, or Tolerance Consult Factory. • TX, TXV, and S-Level Screening Available 5/. • Replacement for 1N4954 – 1N4996

CEPT/T1 Input/Output Transformer

TEW4977 & -1 are designed and approved to be used as an Input transformer with the following devices. Typical applications are: • Primary rate ISDN network nodes. • PBX or computer to T1/CEPT Digital trunks. • High speed data link using T1/CEPT Digital trunk. • TDM Multiplexers.