The TPS73118DBVT is a 1.8V fixed output low-dropout (LDO) Linear Regulator with reverse current protection uses a new topology, an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR) and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current. The device uses an advanced BiCMOS process to yield high precision while delivering very low-dropout (LDO) voltages and low ground pin current. Current consumption, when not enabled, is less than 1µA and ideal for portable applications. The extremely low output noise is ideal for powering VCOs. These devices are protected by thermal shutdown and fold-back current limit.

• Stable with or without capacitors of all types
• Excellent load transient response-with or without optional output capacitor
• New NMOS topology provides low reverse leakage current
• 30µVrms Low noise (10kHz to 100kHz)
• 0.5% Initial accuracy
• 1% Overall accuracy over line, load and temperature
• <1µA Quiescent current (IQ) in shutdown mode
• Thermal shutdown and specified minimum and maximum current limit protection
• Green product and no Sb/Br

The LTC®4151 is a high side power monitor that operates over a wide voltage range of 7V to 80V. In default operation mode, the onboard 12-bit ADC continuously measures high side current, input voltage and an external voltage. Data is reported through the I2C interface when polled by a host. The LTC4151 can also perform on-demand measurement in a snapshot mode.

The LTC4151 features a dedicated shutdown pin to reduce power consumption. The LTC4151-1/LTC4151-2 feature split I2C data pins to drive opto-isolators. The data out on the LTC4151-1 is inverted while that on the LTC4151-2 is not.