®
SP6213
SC-70 100mA CMOS LDO Regulator
APPLICATIONS
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Digital Cordless Phones
Cellular Phones
PDAs
Digital Still Cameras
MP3 Players
Battery-Powered Equipment
Medical Devices
PRELIMINARY INFORMATION
FEATURES
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Tiny SC-70 Package
Industry Standard 3 Pin and 5 Pin Options
Thermally Enhanced 4 Pin SC-70 Option
Guaranteed 100 mA Output
Fixed Outputs: 2.5V, 2.7V, 2.85V, 3.0V,
3.3V, 5V
2.5% Output Voltage Accuracy
Low Dropout Voltage, 250 mV at 100mA
Low Quiescent Current, 65
µA
Low Ground Current, 135
µA
@ I
L
= 100 mA
Short-Circuit Current Limit
Thermal Shutdown
Good Load and Line Regulation
Fast Transient Response: T
ON
/T
OFF
=80µs
Low Temperature Coefficient
Stable with No Load using 0.47
µF
and 1µF
Ceramic
100mA Replacement for 80mA MIC5213
DESCRIPTION
The SP6213 is a 100mA CMOS linear voltage regulator offered in an SC-70 package that
reduces board space requirements by 50% over a SOT-23 package. The SP6213 features low
dropout voltage (250mV at 100mA ), low ground current (135µA at full load) and low, 65µA
quiescent current. Designed specifically for hand-held, battery powered devices, the device
includes an enable/shutdown pin. Regulator ground current increases only slightly in dropout to
extend battery life. The SP6213 is offered in industry standard 3-pin and 5-pin SC-70 packages
and a thermally enhanced 4-pin SC-70. SP6213 is available in 2.7V, 2.85V, 3.0V, 3.3V and 5.0V
fixed output voltages.
V
IN
EN
Bandgap
Reference
V
OUT
1.25V
+
–
Current Limit
& Thermal Shutdown
GND
Figure 1. SP6213 Block Diagram
Rev. 1/16/02
SP6213 100mA CMOS LDO Regulator
© Copyright 2002 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS,
Note 1
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
Supply Input Voltage (V
IN
)...................................-2V to 8V
Output Voltage (V
OUT
)...............................-0.6 to (V
IN
+1V)
Enable Input Voltage (V
EN
).............................-2V to 11V
Power Dissipation (P
D
)............Internally Limited,
Note 3
Lead Temperature (soldering 5s)..........................260°C
Storage Temperature............................-65˚C to +150˚C
OPERATING RATINGS,
Note 2
Input Voltage (V
IN
)..................................+2.5V to +7V
Enable Input Voltage (V
EN
)..........................0V to 10V
Junction Temperature (T
J
)................-40˚C to +125˚C
Thermal Resistance,
SC-70-5 (θ
JA
)................330°C/W
SC-70-4 (θ
JA
)................330°C/W
SC-70-3 (θ
JA
)................450°C/W
PRELIMINARY INFORMATION
SPECIFICATIONS
PARAMETER
V
IN
= V
OUT
+0.5V, I
L
= 100µA, C
IN
= 1µF, C
OUT
= 1µF, T
J
= 25
°
C ,
bold
values indicate -40°C
≤
T
J
≤
125°C unless otherwise noted.
CONDITIONS
Variation from specified V
OUT
MIN
-2.5
-4
TYP
MAX
2.5
4
UNITS
%
ppm/
°
C
Output Voltage Accuracy, (V
OUT
)
Output Voltage Temperature
Coefficient, Note 4, (∆V
OUT
/∆T)
Line Regulation, (
∆V
OUT
/ V
IN
)
Load Regulation, Note 5, (
∆V
OUT
)
Dropout Voltage, Note 6, (V
IN
– V
OUT
)
60
V
IN
= (V
OUT
+ 1V) to 7V
I
L
= 0.1mA to 100mA
I
L
= 100
µA
I
L
= 50mA
I
L
= 100mA
0.05
0. 2
0.25
130
250
0.01
65
65
100
135
66
40
120
190
168
153
0.05
250
0.2
0.4
4
260
500
1
125
125
175
250
%/V
%
mV
mV
mV
µA
µA
µA
µA
dB
Quiescent Current, (I
GND
)
Ground Pin Current, Note 7, (I
GND
)
V
EN
≤
0.4V (Shutdown)
V
EN
≥
2.0V (Operating), I
L
= 0µA
V
EN
≥
2.0V, I
L
= 100
µA
V
EN
≥
2.0V, I
L
= 50mA
V
EN
≥
2.0V, I
L
= 100mA
Power Supply Rejection Ratio, (PSRR)
Current Limit, (I
CL
)
Thermal Limit
Thermal Regulation, (
∆V
OUT
/∆P
D
)
Output Noise (e
NO
)
Frequency = 100Hz, I
L
= 10mA
Frequency = 400Hz, I
L
= 10mA
350
mA
°
C
%/W
µVrms
Turns On
Turns Off
Note 8,
I
L
=50mA, C
L
=1µF, 10Hz to 100kHz
Rev. 1/16/02
SP6213 100mA CMOS LDO Regulator
© Copyright 2002 Sipex Corporation
2
SPECIFICATIONS
V
IN
= V
OUT
+0.5V, I
L
= 100µA, C
IN
= 1.0µF, C
OUT
= 1.0µF, T
J
= 25
°
C ,
bold
values indicate -40°C
≤
T
J
≤
125°C unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MA X
UNITS
PRELIMINARY INFORMATION
ENABLE INPUT
Enable Input Logic-Low Voltage, (V
IL
)
Enable Input Logic-High Voltage, (V
IH
)
Enable Input Current, (I
IL
), (I
IH
)
Regulator Shutdown
Regulator Enabled
V
IL
< 0.4V
V
IH
> 2.0V
Turn on Time (T
ON
)
Turn off Time (T
OFN
)
I
OUT
=50mA
I
OUT
=100µA
I
OUT
=100mA
1.6
0.9
0.9
0.01
0.01
80
80
30
1
1
165
175
35
0.4
V
V
µA
µA
µs
µs
Note 1.
Note 2.
Note 3.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
The maximum allowable power dissipation at any T
A
(ambient temperature) is P
D (MAX)
= (T
J (MAX)
–
T
A
) / q
JA
. Exceeding the maximum allowable power dissipation will result in excessive die
temperature, and the regulator will go into thermal shutdown. The
Θ
JA
of the SP6213 (SC-70-5)
is 450°C/W mounted on a PC board with minimum copper area (see “Thermal Considerations”
section for further details).
Output voltage temperature coefficient is defined as the worst case voltage change divided by
the total temperature range.
Load Regulation is measured at constant junction temperature using low duty cycle pulse
testing. Parts are tested for load regulation in the load range. Changes in output voltage due to
heating effects are covered by the thermal regulation specification.
Dropout Voltage is defined as the input to output differential at which the output voltage drops
2% below its nominal value measured at 1V differential.
Ground pin current is the regulator quiescent current. The total current drawn from the supply is
the sum of the load current plus the ground pin current.
Thermal regulation is defined as the change in output voltage at a time ”t” after a change in
power dissipation is applied, excluding load or line regulation effects. Specifications are for a
100mA load pulse at V
IN
= 7V for t = 10ms.
Devices are ESD sensitive. Handling precautions are recommended.
Note 4.
Note 5.
Note 6.
Note 7.
Note 8.
Note 9.
Rev. 1/16/02
SP6213 100mA CMOS LDO Regulator
© Copyright 2002 Sipex Corporation
3
PIN ASSIGNMENTS
GND
1
GND
1
EN
2
GND NC* EN
3
2
1
PRELIMINARY INFORMATION
2
VOUT
3 Pin
3
VIN
4
VOUT
4 Pin
3
VIN
4
VOUT
5 Pin
5
VIN
*connect to GND for enhanced
thermal performance
PIN NUMBER
3 PIN
4 PIN
5 PIN
1
1
3
2
4
4
3
3
5
2
1
2
PIN NAME
GND
V
OUT
V
IN
EN
NC
DESCRIPTION (FUNCTION)
Ground Connection
Regulator Output
Supply Input
Enable / Shutdown (Logic high=enable;
logic low = shutdown)
No Connection
THEORY OF OPERATION
General Overview
Enable/Shutdown Operation
The SP6213 is turned off by pulling the EN pin
low and turned on by pulling it high. If this
enable/shutdown feature is not required, EN
should be tied to V
IN
to keep the regulator output
on at all times.
Input Capacitor
A small capacitor of about 1µF is required from
V
IN
to GND if e.g. a battery is used as the input.
Any good quality ceramic or tantalum capacitor
may be used at the input.
Output Capacitor
An output capacitor is required between V
OUT
and GND to prevent oscillation. The minimum
size of the output capacitor is a 0.47
µF
ceramic.
The given datasheet values relate to an IC with
a ceramic output capacitor of 1µF. Larger val-
ues make the IC more stable which means an
improvement of the regulator’s transient re-
sponse. For a lower output current, the output
capacitance can be chosen smaller in order to
have the same output stability.
Rev. 1/16/02
No Load Stability
The SP6213 will remain stable and in regulation
with no external load (other than the internal
voltage driver) unlike many other voltage regu-
lators. This is especially important in CMOS
RAM keep-alive applications.
Thermal Considerations
The SP6213 is designed to provide 100 mA of
continuous current in a very tiny package. Maxi-
mum power dissipation can be calculated based
on the output current and the voltage drop across
the part. To determine the maximum power
dissipation of the package, use the junction-to-
ambient thermal resistance of the device and the
following basic equation:
P
D
= (T
J(max)
- T
A
) /
Θ
JA
T
J(max)
is the maximum junction temperature of
the die and is 125°C. T
A
is the ambient operat-
ing.
Θ
JA
is the junction-to-ambient thermal re-
sistance for the regulator and is layout depen-
dent.
SP6213 100mA CMOS LDO Regulator
© Copyright 2002 Sipex Corporation
4
THEORY OF OPERATION:
CONTINUED
The actual power dissipation of the regulator
circuit can be determined using one simple
equation:
P
D
= (V
IN
- V
OUT
)*I
OUT
+ V
IN
*I
GND
Substituting P
D(max)
for P
D
and solving for the
operating conditions that are critical to the ap-
plication will give the maximum operating con-
ditions for the regulator circuit. For example, if
we are operating the SP6213 at 3.0V output at
room temperature, with a minimum footprint
layout, we can determine the maximum input
voltage for a set output current.
P
D(max)
=[(125°C -25°C) / (450°C/W)]
= 222 mW.
To prevent the device from entering thermal
shutdown, maximum power dissipation can not
be exceeded. Using the output voltage of 3.0V
and an output current of 100 mA, the maximum
input voltage can be determined. Ground pin
current can be taken from the electrical spec’s-
table (0.135 mA at 100 mA). The maximum
input voltage is determined as follows:
222mW = (V
IN
– 3.0V)*100mA
+ V
IN
*0.135mA
After calculations, we find that the maximum
input voltage of a 3.0V application at 100mA of
output current in an SC-70-5 package is 5.2V.
PRELIMINARY INFORMATION
Rev. 1/16/02
SP6213 100mA CMOS LDO Regulator
© Copyright 2002 Sipex Corporation
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