UNISONIC TECHNOLOGIES CO., LTD
LR6401
DUAL CHANNEL LDO
REGULATORS WITH ENABLE
FUNCTION
DESCRIPTION
The UTC
LR6401
is a low noise and high accuracy LDO voltage
regulator which has enable soft start function. Designers can reduce
power consumption more easily by applying EN function that can
turn off the output of each device and control the in rush current
through the soft the start function.
The UTC
LR6401
comes with low design cost and outstanding
output stability and its compatibility of working with low ESR ceramic
capacitors is undoubted. Besides, and this level of stability is
ensured by the perfect transient response and PSRR derived from a
large frequency range.
5
4
CMOS IC
6
1
2
3
SOT-26
1
VSON-6
FEATURES
* V
D
=150mV
@100mA
(Typ.), V
OUT
≥2.8V
* Range of Operating Voltage:2.5V ~ 6.0V
* Range of Output Voltage Range:1.2V ~ 4.0V
* Range of Output Current:300mA / Channel
* Low Power Consumption:30μA (Typ.) for Each Channel
* Standby Current:0.1μA (Typ.)
* Accurate：±2%
* High PSRR: 65 dB
* Each Channel Output Current Limit Protection:450mA
* With Short Circuit Protection
* Output ON/OFF Control Function
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
LR6401xG-AG6-L
LR6401xG-AG6-R
LR6401xG-V26-L
LR6401xG-V26-R
Note: x: Output Voltage, refer to Marking Information.
Package
SOT-26
VSON-6
Packing
Tape Reel
Tape Reel
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Copyright © 2011 Unisonic Technologies Co., Ltd
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QW-R502-332.H
LR6401
MARKING INFORMATION
PACKAGE
VOLTAGE
VOLTAGE CODE
MARKING
CMOS IC
SOT-26
VSON-6
1.8V + 3.3V
1.8V + 2.8V
2.5V + 3.3V
2.8V + 3.3V
2.8V + 1.8V
3.3V + 2.8V
2.85V+2.85V
A
B
C
D
E
F
H
PIN CONFIGURATION
EN1
V
IN
EN2
1
2
3
6
5
4
V
OUT1
GND
V
OUT2
V
OUT2
6
V
OUT1
5
GND 4
1 EN1
2 V
IN
3 EN2
For SOT-26
For VSON-6
(BOTTOM VIEW)
PIN DESCRIPTION
PIN NO.
SOT-26
VSON-6
1
1
2
2
3
3
4
6
5
4
6
5
PIN NAME
EN1
V
IN
EN2
V
OUT2
GND
V
OUT1
DESCRIPTION
Channel 1’s output enable control Pin
Voltage Input pin
Channel 2’s output enable control Pin
Channel 2’s voltage output
Ground
Channel 1’s voltage output
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 8
QW-R502-332.H
LR6401
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
V
IN
V
EN
V
OUT
I
OUT1
+I
OUT2
CMOS IC
RATINGS
UNIT
Input Voltage
7.0
V
EN Pin Voltage
V
SS
-0.3~V
IN
+0.3
V
Output Voltage
V
SS
-0.3~V
IN
+0.3
V
Output Current
700
mA
SOT-26
400
Power Dissipation
P
D
mW
VSON-6
1000
Junction Temperature
T
J
150
°C
Operating Temperature
T
OPR
-40~+85
°C
Storage Temperature
T
STG
-55~+125
°C
Note:Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
Junction to Ambient
SOT-26
VSON-6
SYMBOL
θ
JA
RATINGS
250
100
UNIT
°C/W
ELECTRICAL CHARACTERISTICS
(Ta = 25°C, unless otherwise specified.)
PARAMETER
Input Voltage
Output Voltage
Line Regulation
SYMBOL
V
IN
V
OUT
Δ
V
OUT
Δ
V
IN
× V
OUT
TEST CONDITIONS
V
IN
=V
OUT
+1.0V, I
OUT
=30mA
V
OUT
+1.0V≤V
IN
≤6.0V
I
OUT
=1mA
V
IN
=V
OUT
+1.0V,
1mA
≤
I
OUT
≤
150mA
V
IN
=V
OUT
+1.0V,
1mA
≤
I
OUT
≤300mA
V
OUT
+1.0V≤V
IN
≤6V
(Note 1)
V
IN
=V
EN
=V
OUT
+1.0V, I
OUT
=0mA
V
IN
=V
OUT
+1.0V, V
EN
=V
SS
V
IN
=V
OUT
+1.0V, V
IN
=V
EN
V
IN
=V
OUT
+1.0V, V
IN
=V
EN
I
OUT
=100mA
I
OUT
=300mA
(Note 2)
(Note 2)
MIN
2.5
V
OUT
×0.98
TYP
V
OUT
0.02
13
30
300
60
0.1
450
150
150
450
MAX
6.0
V
OUT
×1.02
0.1
60
90
90
1
UNIT
V
V
%/V
mV
mV
mA
μA
μA
mA
mA
mV
mV
V
V
Load Regulation
Output Current
Supply Current
Standby Current
Current Limite
Short-Circuit Current
Dropout Voltage
EN Pin Input Voltage
ΔV
OUT
I
OUT
I
SS
I
STN-BY
I
LIMIT
I
SC
V
D
250
750
High
V
IH
1.2
0.4
Low
V
IL
Temperature Coefficient of
T
C
V
O
I
OUT
=30mA, -25°C≤T
OPR
≤+85°C
±100
ppm/°C
Output Voltage
Over Temperature Shutdown
OTS
150
°C
Over Temperature Hysteresis
OTH
40
°C
Power Supply Rejection Rate
PSRR
I
OUT
=30mA, F=100Hz
65
dB
Notes: 1. Measured using a double sided board with 1” x 2” square inches of copper area connected to the GND pins
for “heat spreading”.
2. EN pin input voltage must be always less than or equal to input voltage.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-332.H
DSP and ARM Processors
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