LT3029 Datasheet | Linear Technology

Features n n n n n n n n n n n n n LT3029 Dual 500m A/500m A Low Dropout, Low Noise, Micropower Linear Regulator DESCRIPTION .. Output Current: 500m A per Channel Low Dropout Voltage: 300m V Low Noise: 20μVRMS (10Hz to 100k Hz) Low Quiescent Current: 55μA per Channel Wide Input Voltage Range: 1.8V to 20V (mon or Independent Input Supply) Adjustable Output: 1.215V Reference Voltage Very Low Quiescent Current in Shutdown: <1μA per Channel Stable with 3.3μF Minimum Output Capacitor Stable with Ceramic, Tantalum or Aluminum Electrolytic Capacitors Reverse-Battery and Reverse Output-to-Input Protection Current Limit with Foldback and Thermal Shutdown Tracking/Sequencing Capability: patible with LTC292X Power Supply Tracking ICs Thermally Enhanced 16-Lead MSOP and 16-Lead (4mm × 3mm) DFN Packages The LT®3029 is a dual, micropower, low noise, low dropout linear regulator. The device operates either with a mon input supply or independent input supplies for each channel, over an input voltage range of 1.8V to 20V. Each output supplies up to 500m A of output current with a typical dropout voltage of 300m V. Quiescent current is well controlled in dropout. With an external 10n F bypass capacitor, output noise is only 20μVRMS over a 10Hz to 100k Hz bandwidth. Designed for use in battery-powered systems, the low 55μA quiescent current per channel makes it an ideal choice. In shutdown, quiescent current drops to less than 1μA. Shutdown control is independent for each channel, allowing for flexible power management. The LT3029 optimizes stability and transient response with low ESR ceramic output capacitors, requiring a minimum of only 3.3μF . The regulator does not require the addition of ESR, as is mon with other regulators. Internal circuitry provides reverse-battery protection, reverse-current protection, current limiting with foldback and thermal shutdown. The device is available as an adjustable output voltage device with a 1.215V reference voltage....