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LC1111 Datasheet Preview

LC1111 Datasheet

LOW DROPOUT LINEAR REGULATOR CONTROLLER

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UNISONIC TECHNOLOGIES CO., LTD
LC1111
Advance
LINEAR INTEGRATED CIRCUIT
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 MOSFET and provide an
adjustable output by using an external resistive divider.
An extremely accurate 0.8V (±2%) reference allows the
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 VCC 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 reference (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
ORDERING INFORMATION
Ordering Number
LC1111G-AG6-R
Package
SOT-26
54
6
23
1
SOT-26
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 7
QW-R102-072.a




UTC

LC1111 Datasheet Preview

LC1111 Datasheet

LOW DROPOUT LINEAR REGULATOR CONTROLLER

No Preview Available !

LC1111
MARKING
Advance
LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
PIN NAME
EN
GND
FB
SS
DRV
VCC
DESCRIPTION
Enable control pin. Pulling the EN high (VEN>1.6) enables the VOUT; forcing the EN
low (VEN<0.4V disables the VOUT. When re-enabled, the IC undergoes a new
soft-start process. The EN pin is pulled high internally, hence it can be left open if the
EN control is not used.
Ground pin of the circuitry. All voltage levels are measured with respect to this pin.
Voltage Feedback Pin. Connecting this pin to an external resistor divider receives the
feedback voltage of the regulator.
Connect this pin to a capacitor for soft-start.
This pin drives the gate of an external N-channel MOSFET for linear regulator.
Power input pin of the device. The voltage at this pin is monitored for
Power-On-Reset purpose.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 7
QW-R102-072.a


Part Number LC1111
Description LOW DROPOUT LINEAR REGULATOR CONTROLLER
Maker UTC
Total Page 7 Pages
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