LESHAN RADIO COMPANY, LTD.
LR6218 Series
Low Dropout Voltage
300mA CMOS LDO Regulator
INTRODUCTION
The LR6218 Series
are a group of
positive voltage regulators manufactured
by CMOS technologies with high ripple
rejection, extremely low power consump-
tion and low dropout voltage, which
provide large output currents even when
the difference of the input-output voltage is
small. Each of the LR 6218 series consists
of a high-precision voltage reference, an
error correction circuit, and a current limit-
ed output driver. Thus the series are very
suitable for the battery-powered equip-
ments, such as Portable/Palm computers,
Portable consumer equipments, industry
equipments and so on, which want to
prolong the using life of the battery.
FEATURE
●
Maximum Output Current: 300mA（Typ.）
●
Output Voltage Range: 0.9V½5.0V,
（selectable
in 0.1V steps）
●
High Accuracy: ±2％（Typ.）
●
Dropout Voltage:
150mV@100mA（3.0V Typ.）
●
Excellent Line Regulation: 0.1％/V
●
Built-in Current Limiter
●
Built-in Short Circuit Protection
●
Static safety, 2KV@HBM
●
TC: 100ppm/℃
●
Low ESR Capacitor: Ceramic Compatible
APPLICATION
●
Battery powered systems
●
Radio control systems
●
Portable instrumentations
●
Portable/Palm computers
●
Reference Voltage Sources
●
Portable consumer equipments
BLOCK DIAGRAM
ORDER INFORMATION
LR6218
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LESHAN RADIO COMPANY, LTD.
PIN CONFIGURATION
LR6218E（Pin output sequence can be ordered by customer）
SOT23-5
PIN NUMBER
PIN NAME
V
IN
V
SS
FUNCTION
1
2
3
4
5
SOT89-5
PIN NUMBER
CE
NC
V
OUT
Power Input Pin
Ground
Chip Enable Pin
No Connection
Output Pin
PIN NAME
V
OUT
V
SS
FUNCTION
1
2
3
4
5
NC
CE
V
IN
Output Pin
Ground
No Connection
Chip Enable Pin
Power Input Pin
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input Voltage
Output Current
Output Voltage
SOT23
Power Dissipation
SOT89
TO92
Operating Temperature
Storage Temperature
Soldering Temperature & Time
SYMBOL
V
IN
I
OUT
V
OUT
Pd
Pd
Pd
T
Opr
T
stg
T
solder
Rating
8
600
Vss-0.3~Vout+0.3
250
500
500
-40~+85
-55~+125
260℃, 10s
UNIT
V
mA
V
mW
mW
mW
℃
℃
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LESHAN RADIO COMPANY, LTD.
ELECTRICAL CHARACTERISTICS
LR6218 Series
PARAMETER
Output Voltage
Supply Current
Standby Current
Output Current
Dropout Voltage
(Note 3)
Load Regulation
SYMBOL
V
OUT
(E)
(Note 2)
I
SS
I
standby
I
OUT
V
dif1
V
dif2
∆V
OUT
∆V
OUT
∆V
IN
*
V
OUT
∆V
OUT
∆T
* V
OUT
PSRR
I
Short
I
Lim
V
IN
V
CE
“H”
V
CE
“L”
CONDITIONS
I
OUT
=40mA
V
IN
= V
OUT
+1V
V
CE
=V
IN
=Vout+1V
V
CE
= V
SS
－
I
OUT
= 40mA
I
OUT
= 100mA
V
IN
= V
OUT
+1V,
1mA≤I
OUT
≤100mA
I
OUT
= 40mA
V
OUT
+1V≤V
IN
≤6V
I
OUT
= 40mA
-40≤T≤+85
I
OUT
=10mA
f = 1kHz
V
OUT
= V
SS
V
IN
= V
OUT
+1V
－
2
1.0
300
60
150
10
MIN.
V
OUT
*0.98
(C
IN
= C
OUT
= 1μF，
Ta=25℃)
TYP.
V
OUT
5
0.1
MAX.
V
OUT
*1.02
UNITS
V
μA
μA
mA
mV
mV
mV
Line Regulation
Output Voltage
Temperature
Characteristics
Power Supply Ripple
Rejection
Short Current
Current Limit
Input Voltage
CE "High" Voltage
CE "Low" Voltage
0.1
%/V
100
ppm
60
50
600
6
V
IN
0.2
dB
mA
mA
V
V
V
NOTE:
1. V
OUT
：Specified
Output Voltage.
2. V
OUT
(E)
：Effective
Output Voltage ( I.e. The Output Voltage When V
IN
= (V
OUT
+1.0V)
And Maintain A Certain I
OUT
Value).
3. V
diff
：The
Difference Of Output Voltage And Input Voltage When Input Voltage Is
Decreased Gradually Till Output Voltage Equals To 98% Of V
OUT
(E).
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LESHAN RADIO COMPANY, LTD.
TYPICAL APPLICATION CIRCUIT
LR6218E（SOT23-5）
Typical Performance Characteristics
(1) Output Voltage vs Input Voltage
LR6218E30P
LR6218E30P
(2) Input Transient Response
LR6218E30P
LR6218E30P
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LESHAN RADIO COMPANY, LTD.
(3) Input Transient Response
LR6218E30P
LR6218E30P
(4) Temperature
LR6218E30P
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