LD59150 Low Dropout (LDO) Linear Regulator

STMicro's LD59150 LDO linear regulator features Power-Good and adjustable startup time for automotive applications

STMicro's LD59150 Low Dropout Linear Regulator STMicro's LD59150 is a 1.5 A LDO regulator designed for use in various environments. The NMOS topology allows R_DS(ON) of the pass element to be reduced, which results in a very small dropout voltage even with very low input supply voltage. Output voltage can be adjusted from 0.8 V to 3.6 V by means of an external resistor divider. The programmable soft-start circuit offers the possibility to control the inrush current at startup providing a monotonic supply voltage to the load. The LD59150 has an enable pin to turn on/off (EN) the regulator and Power Good to monitor the regulated output voltage (PG). A combination of both can be used to set the desired power sequence in case of multiple regulated rails. The LD59150 embeds protection functions, such as current limit and thermal shutdown.

Features

Ultra-low dropout (65 mV @ 1.5 A) increases power efficiency and reduces power dissipation
High VOUT accuracy (0.5% typ) provides a clean and precise supply voltage to sensitive loads
Programmable soft-start reduces inrush current and allows tight control of power sequencing
Available in DFN10 3 mm x 3 mm package with wettable flanks; a compact package solution with maximum reliability

Automotive AEC-Q100 Grade 1 qualified
Power Good function allows power sequencing
Adjustable output voltage gives design flexibility
Dual supply pin permits ultra-low dropout operation on very low voltage rails

Applications

Automotive and industrial post regulation
Generic POL
Automotive and industrial ASICs and FPGA supply

Telecom infrastructure
Advanced driver-assistance systems (ADAS)