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PDF LC1111 Data sheet ( Hoja de datos )
| Número de pieza | LC1111 | |
| Descripción | LOW DROPOUT LINEAR REGULATOR CONTROLLER | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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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
1 page  
LC1111
Advance
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over VCC=5/12V, TA=-40~85°C. Typical values are at
TA=25°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX
SUPPLY CURRENT
VCC Supply Current
VCC Shutdown Current
POWER-ON-RESET (POR)
VCC POR Threshold
VCC POR Hysteresis
ICC
VCC=12V
VCC=5V
ISD
VCC=12V, EN=GND
VCC=5V, EN=GND
VCC Risig
0.8
0.8
3.8 4.0
0.4
1.0
1.0
5
5
4.2
REFERENCE VOLTAGE
Reference Voltage
Reference Voltage Accuracy
Line Regulation
FB Input Current
VREF
VCC=12V, TA=25°C
VCC=12V
VCC=4.5V~13.2V
-1
-1.5
-100
0.8
1
1.5
100
ERROR AMPLIFIER
Unity Gain Bandwidth
Open Loop DC Gain
Power Supply Rejection Ratio
DRV High Voltage
DRV Low Voltage
DRV Source Current
DRV Sink Current
ENABLE
EN Logic High Threshold
Voltage
VCC=5/12V
VCC=12V, No Load
PSRR VCC=12V, 100Hz, No Load
VDRV (high)
VCC=12V, IDRV (SOURCE)=5mA, VFB=0.6V
VCC=5V, IDRV (SOURCE)=5mA, VFB=0.6V
VDRV (low)
VCC=12V, IDRV (SINK)=5mA, VFB=1V
VCC=5V, IDRV (SINK)=5mA, VFB=1V
IDRV
(source)
VCC=12V, VDRV=6V, VFB=0.6V
VCC=5V, VDRV=2.5V, VFB=0.6V
IDRV (sink)
VCC=12V, VDRV=6V, VFB=1V
VCC=5V, VDRV=2.5V, VFB=1V
VEN (TH) VEN Rising
60
50
11.2
0.55
2
80
11.5
4.7
0.5
0.8
50
10
40
10
0.8
1
1.05
EN Hysteresis
50
EN Shutdown Debounce
EN Internal Pull High Current
VEN Falling
2
5
SOFT-START
SS Current
ISS
4.5
UNDER-VOLTAGE PROTECTION (UVP)
Under-Voltage Threshold
VUV (TH) VEN=5V, VFB Falling
UVP Debounce Interval
68 75
5
82
UNIT
mA
mA
µA
µA
V
V
V
%
%
nA
MHz
dB
dB
V
V
V
V
mA
mA
mA
mA
V
mV
µs
µA
µA
%
µs
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 7
QW-R102-072.a
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| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet LC1111.PDF ] | |
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