| LOW DROPOUT LINEAR REGULATOR CONTROLLER
DESCRIPTION
The UTC LC1111 is a low dropout linear regulator controller for
applications requiring high-current and ultra low dropout voltages.
The use of an external N-Channel MOSFETand provide an
adjustable output by using an external resistive divider.
An extremely accurate 0.8V (2%) reference allows th
implementation of sub 1 V voltage supplies. The reference is
guaranteed over the complete supply and temperature ranges.
The UTC LC1111 integrates various functions. For example, a
Power-On-Reset (POR) circuit monitors V CC supply voltage to
prevent wrong operations; the function of Under-Voltage
Protection (UVP) protects the device from short circuit condition.
The soft-start of output voltage is adjustable by the external
capacitor on SS pin. Moreover, the UTC LC1111 can be enabled
by other power system; namely, holding the EN above 1.6V
enables output and pulling the EN under 0.4 disables output.
FEATURES
* 4.5V~13.5V supply voltage range
* 0.8V (2%) voltage refeence (temperature and process)
* Power-On-Reset monitoring on VCC
* Fast transient response
* Programmable soft-start
* Enable control function
* Low shutdown current
* Under-Voltage protection
* Two versions of IC available:UVP activated after VOUT is ready |
