LESHAN RADIO COMPANY, LTD.
LR73XX
Low Power 250mA CMOS LDO
Features
Ultra low quiescent current: 1µA (typ.)
High input voltage (up to 12V)
Output voltage:
1.5V, 2.5V, 3.0V, 3.3V, 3.6V, 4.4V, 5.0V
Output voltage accuracy: tolerance ±3%
Maximum output current: 250mA
Low dropout voltage
Low temperature coefficient
TO-92, SOT-89package
Applications
Battery-powered equipment
Voltage regulator for microprocessor
Voltage regulator for LAN cards
Wireless Communication equipment
Audio/Video equipment
General Description
The LR73XX series is a set of three-terminal, low
power, high voltage regulators implemented in
CMOS technology. The series features extremely
low quiescent current which is typically 1µA. They
allow input voltages as high as 12V. The device
provides large current with a significantly small
dropout voltage.
The LR73XX consists of a high-precision voltage
reference, an error correction circuit, and a current
limited output driver. They are available with several
fixed output voltages ranging from 1.5V to 5.0V.
CMOS technology ensures low dropout voltage and
low current consumption. Although designed
primarily as fixed voltage regulators, these devices
can be used with external components to generate
variable voltages and current.
Selection Table
Part No.
LR7315
LR7325
LR7330
LR7333
LR7336
LR7344
LR7350
Output Voltage
1.5V
2.5V
3.0V
3.3V
3.6V
4.4V
5.0V
Tolerance
±3%
±3%
±3%
±3%
±3%
±3%
±3%
Package
Marking
73XX-A (for
TO-92-A)
73XX-A (for
SOT-89)
TO-92-A
SOT-89-A
Note: “XX” stands for output voltages
1/9
LESHAN RADIO COMPANY, LTD.
LR73XX
Block Diagram
Pin Assignment
Absolute Maximum Ratings
Supply Voltage ......................V
SS
-0.3V to V
SS
+15V
Power Consumption (*1) .............. ............500mW
Power Consumption (*2) ...........................500mW
Storage Temperature .....................-50℃ to 125℃
Operating Temperature ......................-40℃ to 85℃
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum
Ratings” may cause substantial damage to the device. Functional operation of this device at other conditions
beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may
affect device reliability.
*1: applied to TO-92
*2: applied to SOT-89
2/9
LESHAN RADIO COMPANY, LTD.
LR73XX
Electrical Characteristics
L R7315, +1.5V Output Type
Symbol
V
OUT
I
OUT
(MAX)
△V
OUT
*
V
DROP
**
I
SS
△V
OUT
V
IN
×△V
OUT
V
IN
△V
OUT
△Ta
Parameter
Output Voltage
Maximum Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Temperature Coefficient
Test Conditions
VIN
Condition
2.5V
I
OUT
=40mA
2.5V
2.5V
——
2.5V
——
——
2.5V
V
OUT
≥1.62V
1mA≤I
OUT
≤60mA
I
OUT
=40mA
No load
I
OUT
=40mA
2.5V≤V
IN
≤12V
——
I
OUT
=40mA
-40℃<Ta<85℃
Min.
1.455
250
——
——
——
——
——
——
Typ.
1.5
——
45
170
1
0.2
——
±0.7
Max.
1.545
——
90
——
2.5
0.3
15
——
Ta=25℃
Unit
V
mA
mV
mV
µA
%/V
V
ppm/℃
L R7325, +2.5V Output Type
Symbol
V
OUT
I
OUT
(MAX)
△V
OUT
*
V
DROP
**
I
SS
△V
OUT
V
IN
×△V
OUT
V
IN
△V
OUT
△Ta
Parameter
Output Voltage
Maximum Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Temperature Coefficient
Test Conditions
VIN
Condition
3.5V
I
OUT
=40mA
3.5V
3.5V
——
3.5V
——
——
3.5V
V
OUT
≥2.25V
1mA≤I
OUT
≤60mA
I
OUT
=40mA
No load
I
OUT
=40mA
3.5V≤V
IN
≤12V
——
I
OUT
=40mA
-40℃<Ta<85℃
Min.
2.425
250
——
——
——
——
——
——
Typ.
2.5
——
45
170
1
0.2
——
±0.7
Max.
Ta=25℃
Unit
V
mA
mV
mV
µA
%/V
V
ppm/℃
2.575
——
90
——
2.5
0.3
15
——
L R7330, +3.0V Output Type
Symbol
V
OUT
I
OUT
(MAX)
△V
OUT
*
V
DROP
**
I
SS
△V
OUT
V
IN
×△V
OUT
V
IN
△V
OUT
△Ta
Parameter
Output Voltage
Maximum Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Temperature Coefficient
VIN
4V
4V
4V
——
4V
——
——
4V
Test Conditions
Condition
I
OUT
=40mA
V
OUT
≥2.7V
1mA≤I
OUT
≤80mA
I
OUT
=40mA
No load
I
OUT
=40mA
4V≤V
IN
≤12V
——
I
OUT
=40mA
-40℃<Ta<85℃
Min.
2.91
250
——
——
——
——
——
——
Typ.
3
——
45
95
1
0.2
——
±0.7
Max.
3.09
——
90
——
2.5
0.3
15
——
Ta=25℃
Unit
V
mA
mV
mV
µA
%/V
V
ppm/℃
3/9
LESHAN RADIO COMPANY, LTD.
LR73XX
LR7333, +3.3V Output Type
Symbol
V
OUT
I
OUT
(MAX)
△V
OUT
*
V
DROP
**
I
SS
△V
OUT
V
IN
×△V
OUT
V
IN
△V
OUT
△Ta
Parameter
Output Voltage
Maximum Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Temperature Coefficient
VIN
4.3V
4.3V
4.3V
——
4.3V
——
——
4.3V
Test Conditions
Condition
I
OUT
=40mA
V
OUT
≥2.97V
1mA≤I
OUT
≤80mA
I
OUT
=40mA
No load
I
OUT
=40mA
4.3V≤V
IN
≤12V
——
I
OUT
=40mA
-40℃<Ta<85℃
Min.
3.201
250
——
——
——
——
——
——
Typ.
3.3
——
45
90
1
0.2
——
±0.7
Ta=25℃
Max.
3.399
——
90
——
2.5
0.3
15
——
Unit
V
mA
mV
mV
µA
%/V
V
ppm/℃
LR7336, +3.6V Output Type
Symbol
V
OUT
I
OUT
(MAX)
△V
OUT
*
V
DROP
**
I
SS
△V
OUT
V
IN
×△V
OUT
V
IN
△V
OUT
△Ta
Parameter
Output Voltage
Maximum Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Temperature Coefficient
VIN
4.6V
4.6V
4.6V
——
4.6V
——
——
4.6V
Test Conditions
Condition
I
OUT
=40mA
V
OUT
≥3.15V
1mA≤I
OUT
≤80mA
I
OUT
=40mA
No load
I
OUT
=40mA
4.6V≤V
IN
≤12V
——
I
OUT
=80mA
-40℃<Ta<85℃
Min.
3.492
250
——
——
——
——
——
——
Typ.
3.6
——
45
80
1
0.2
——
±0.7
Ta=25℃
Max.
3.708
——
90
——
2.5
0.3
15
——
Unit
V
mA
mV
mV
µA
%/V
V
ppm/℃
LR7344, +4.4V Output Type
Symbol
V
OUT
I
OUT
(MAX)
△V
OUT
*
V
DROP
**
I
SS
△V
OUT
V
IN
×△V
OUT
V
IN
△V
OUT
△Ta
Parameter
Output Voltage
Maximum Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Temperature Coefficient
Test Conditions
VIN
Condition
5.4V
I
OUT
=40mA
5.4V
5.4V
——
5.4V
——
——
5.4V
V
OUT
≥3.15V
1mA≤I
OUT
≤80mA
I
OUT
=40mA
No load
I
OUT
=40mA
4.6V≤V
IN
≤12V
——
I
OUT
=80mA
-40℃<Ta<85℃
Min.
4.268
250
——
——
——
——
——
——
Typ.
4.4
——
45
80
1
0.2
——
±0.7
Ta=25℃
Max.
4.532
——
90
——
2.5
0.3
15
——
Unit
V
mA
mV
mV
µA
%/V
V
ppm/℃
4/9
LESHAN RADIO COMPANY, LTD.
LR73XX
LR7350, +5.0V Output Type
Symbol
V
OUT
I
OUT
(MAX)
△V
OUT
*
V
DROP
**
I
SS
△V
OUT
V
IN
×△V
OUT
V
IN
△V
OUT
△Ta
Parameter
Output Voltage
Maximum Output Current
Load Regulation
Dropout Voltage
Quiescent Current
Line Regulation
Input Voltage
Temperature Coefficient
VIN
6V
6V
6V
——
6V
——
——
6V
Test Conditions
Condition
I
OUT
=40mA
V
OUT
≥4.5V
1mA≤I
OUT
≤
100mA
I
OUT
=40mA
No load
I
OUT
=40mA
6V≤V
IN
≤12V
——
I
OUT
=80mA
-40℃<Ta<85℃
Min.
4.85
250
——
——
——
——
——
——
Typ.
5
——
45
60
1
0.2
——
±0.7
Ta=25℃
Max.
5.15
——
90
——
2.5
0.3
15
——
Unit
V
mA
mV
mV
µA
%/V
V
ppm/℃
Note: "*"Regulation is measured at constant junction temperature, using pulsed ON time.
"**" Dropout is measured at constant junction temperature, using pulsed ON time, and the criterion is
V
OUT
inside target value ±2%.
Application Circuits
LR73XX
5/9
Analog electronics
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