MIC5213
Micrel
MIC5213
Teeny™ SC-70
µ
Cap Low-Dropout Regulator
Final Information
General Description
The MIC5213 is a
µCap
80mA linear voltage regulator in the
Teeny™ SC-70 package. Featuring half the footprint of the
standard SOT-23 package, this Teeny™ SC-70 regulator
has very low dropout voltage (typically 20mV at light loads
and 300mV at 80mA) and very low ground current (225µA at
20mA output). It also offers better than 3% initial accuracy
and includes a logic-compatible enable input.
The
µCap
regulator design is optimized to work with low-
value, low-cost ceramic capacitors. The outputs typically
require only 0.47µF of output capacitance for stability.
Designed especially for hand-held, battery-powered devices,
the MIC5213 can be controlled by a CMOS or TTL compatible
logic signal. When disabled, power consumption drops nearly
to zero. If on-off control is not required, the enable pin may be
tied to the input for 3-terminal operation. The ground current
of the MIC5213 increases only slightly in dropout, further
prolonging battery life. Key MIC5213 features include current
limiting, overtemperature shutdown, and protection against
reversed battery.
The MIC5213 is available in 2.5V, 2.6V, 2.7V, 2.8V, 3.0V,
3.3V, 3.6V, and 5.0V fixed voltages. Other voltages are
available; contact Micrel for details.
Features
•
•
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•
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Teeny™ SC-70 package
Wide selection of output voltages
Guaranteed 80mA output
Low quiescent current
Low dropout voltage
Tight load and line regulation
Low temperature coefficient
Current and thermal limiting
Reversed input polarity protection
Zero off-mode current
Logic-controlled shutdown
Stability with low ESR ceramic capacitors
Applications
•
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Cellular telephones
Laptop, notebook, and palmtop computers
Battery-powered equipment
Bar code scanners
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
Ordering Information
Standard
Part Number
Pb-Free
MIC5213-2.5YC5
MIC5213-2.6YC5
MIC5213-2.7YC5
MIC5213-2.8YC5
MIC5213-3.0YC5
MIC5213-3.3YC5
MIC5213-3.6YC5
MIC5213-5.0YC5
Marking
Voltage
Standard Pb-Free
LAM
LAQ
LAL
LAJ
LAG
LAE
LAD
LAB
LAM
LAQ
LAL
LAJ
LAG
LAE
LAD
LAB
2.5V
2.6V
2.7V
2.8V
3.0V
3.3V
3.6V
5.0V
Junction Temp. Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
SC-70-5
SC-70-5
SC-70-5
SC-70-5
SC-70-5
SC-70-5
SC-70-5
SC-70-5
MIC5213-2.5BC5
MIC5213-2.6BC5
MIC5213-2.7BC5
MIC5213-2.8BC5
MIC5213-3.0BC5
MIC5213-3.3BC5
MIC5213-3.6BC5
MIC5213-5.0BC5
Other voltages available. Contact Micrel for details.
Typical Applications
Enable
Shutdown
1
5
LAx
2
3
4
V
OUT
0.47µF
Regulator Circuit
Teeny is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000• http://www.micrel.com
August 2004
1
MIC5213
MIC5213
Micrel
Pin Configuration
GND NC
3
2
EN
1
LAx
4
5
OUT
IN
SC-70-5 (C5)
Pin Description
Pin Number
1
2
3
4
5
Pin Name
EN
NC
GND
OUT
IN
Pin Function
Enable (Input): TTL/CMOS compatible control input. Logic high = enabled;
logic low or open = shutdown.
Not internally connected.
Ground
Regulator Output
Supply Input
Absolute Maximum Ratings
(Note 1)
Input Supply Voltage (V
IN
) ............................ –20V to +20V
Enable Input Voltage (V
EN
) ........................... –20V to +20V
Power Dissipation (P
D
) ............................ Internally Limited
Storage Temperature Range (T
S
) ............ –60°C to +150°C
Lead Temperature (Soldering, 5 sec.) ...................... 260°C
ESD,
Note 3
Operating Ratings
(Note 2)
Input Voltage (V
IN
) ........................................... 2.5V to 16V
Enable Input Voltage (V
EN
) .................................. 0V to V
IN
Junction Temperature Range ................... –40°C to +125°C
Thermal Resistance
(θ
JA
).........................................
Note 4
MIC5213
2
August 2004
MIC5213
Micrel
Electrical Characteristics
V
IN
= V
OUT
+ 1V; I
L
= 1mA; C
L
= 0.47µF; V
EN
≥
2.0V; T
J
= 25°C,
bold
values indicate –40°C
≤
T
J
≤
+125°C; unless noted.
Symbol
V
O
∆V
O
/∆T
∆V
O
/V
O
∆V
O
/V
O
V
IN
–V
O
Parameter
Output Voltage Accuracy
Output Voltage Temp. Coefficient
Line Regulation
Load Regulation
Dropout Voltage,
Note 7
Note 5
V
IN
= V
OUT
+ 1V to 16V
I
L
= 0.1mA to 80mA,
Note 6
I
L
= 100µA
I
L
= 20mA
I
L
= 50mA
I
L
= 80mA
I
Q
I
GND
Quiescent Current
Ground Pin Current,
Note 8
V
EN
≤
0.4V (shutdown)
I
L
= 100µA, V
EN
≥
2.0V (active)
I
L
= 20mA, V
EN
≥
2.0V (active)
I
L
= 50mA, V
EN
≥
2.0V (active)
I
L
= 80mA, V
EN
≥
2.0V (active)
I
GNDDO
I
LIMIT
∆V
O/
∆P
D
Enable Input
V
IL
V
IH
I
IL
I
IH
Note 1.
Note 2.
Note 3.
Note 4.
Conditions
Min
–3
–4
Typ
Max
3
4
Units
%
%
ppm/°C
%
%
%
%
mV
50
0.008
0.08
20
200
250
280
0.01
180
225
850
1800
200
180
0.05
200
0.3
0.5
0.3
0.5
350
mV
mV
600
10
mV
µA
µA
µA
µA
µA
µA
mA
%/W
750
3000
300
250
Ground Pin Current in Dropout
Current Limit
Thermal Regulation
V
IN
= V
OUT(nominal)
– 0.5V,
Note 8
V
OUT
= 0V
Note 9
Enable Input Voltage Level
Logic Low (off)
Logic High (on)
2.0
0.01
8
V
IL
≤
0.6V
V
IH
≥
2.0V
0.6
V
V
µA
µA
Enable Input Current
1
50
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended.
The maximum allowable power dissipation is a function of the maximum junction temperature, T
J(max)
, the junction-to-ambient thermal
resistance,
θ
JA
, and the ambient temperature, T
A
. The maximum allowable power dissipation at any ambient temperature is calculated using:
P
D(max)
= (T
J(max)
– T
A
)
÷ θ
JA
. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator
will go into thermal shutdown.
θ
JA
of the SC-70-5 is 450°C/W, mounted on a PC board.
Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Regulation is measured at constant junction temperature using low duty cycle pulse testing. 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 plus pass transistor base 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 an 80mA load pulse at V
IN
= 16V for t = 10ms.
Note 5.
Note 6.
Note 7.
Note 8.
Note 9.
August 2004
3
MIC5213
MIC5213
Micrel
Typical Characteristics
Dropout Voltage
vs. Output Current
400
DROPOUT VOLTAGE (mV)
OUTPUT VOLTAGE (V)
1000
DROPOUT VOLTAGE (mV)
Dropout Voltage
vs. Temperature
4
C
IN
= 10µF
C
OUT
= 1µF
I
L
= 80mA
200
I
L
= 100µA
Dropout
Characteristics
C
IN
= 10µF
C
OUT
= 1µF
100
300
3
I
L
= 100µA
2
I
L
= 80mA
C
IN
= 10µF
C
OUT
= 1µF
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
7
10
100
I
L
= 1mA
1
1
0.01
0.1
1
10
100
OUTPUT CURRENT (mA)
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
0
2000
GROUND CURRENT (µA)
Ground Current
vs. Output Current
2.0
GROUND CURRENT (mA)
Ground Current
vs. Supply Voltage
GROUND CURRENT (mA)
3.0
2.5
2.0
1.5
1.0
0.5
Ground Current
vs. Temperature
C
IN
= 10µF
C
OUT
= 1µF
I
L
= 80mA
1500
1.5
I
L
= 100µA
1.0
I
L
= 50mA
V
OUT
= 3.3V
1000
I
L
= 50mA
I
L
= 100µA
500
V
IN
= V
OUT
+ 1V
0
0
10 20 30 40 50 60 70 80
OUTPUT CURRENT (mA)
0.5
0.0
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
7
0.0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
Output Voltage
vs. Output Current
SHORT CIRCUIT CURRENT (mA)
4.0
160
140
120
100
80
60
40
20
0
0
Short Circuit Current
vs. Input Voltage
60
40
20
0
-20
-40
-60
100
50
0
∆
OUTPUT (mV)
Thermal Regulation
(3.3V Version)
OUTPUT VOLTAGE (V)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
50
100
150
200
OUTPUT CURRENT (mA)
C
IN
= 10µF
C
OUT
= 1µF
C
IN
= 10µF
C
OUT
= 1µF
LOAD (mA)
C
L
= 1µF
-50
-2
0
2
4 6 8 10 12 14 16
TIME (ms)
1
2
3
4
5
6
INPUT VOLTAGE (V)
7
4.0
Output Voltage
vs. Temperature
OUTPUT CURRENT (mA)
C
IN
= 10µF
C
OUT
= 1µF
200
180
160
140
120
Short Circuit Current
vs. Temperature
MIN. SUPPLY VOLTAGE (V)
3.5
Minimum Supply Voltage
vs. Temperature
OUTPUT VOLTAGE (V)
3.8
3.6
3.4
3.2
3.0
2.8
2.6
I
L
= 1mA
VOUT = 3.3V
3.4
3 DEVICES
HI / AVG / LO
CURVES APPLICABLE
AT 100µA AND 50mA
C
IN
= 10µF
C
OUT
= 1µF
C
IN
= 10µF
C
OUT
= 1µF
3.3
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
2.4
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
100
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
MIC5213
4
August 2004
MIC5213
Micrel
Load Transient
OUTPUT (mA)
∆
OUTPUT (mV)
OUTPUT (mA)
∆
OUTPUT (mV)
Load Transient
100
0
-100
100
-200
50
0
-50
-5
0
5
10
TIME (ms)
15
20
C
OUT
= 10µF
V
IN
= V
OUT
+ 1
40
0
-40
100
50
0
-50
-1
0
1
2 3 4 5
TIME (ms)
6
7
8
C
OUT
= 1µF
V
IN
= V
OUT
+ 1
Line Transient
∆
OUTPUT (V)
Line Transient
∆
OUTPUT (V)
3
2
1
0
-1
8
-2
C
L
= 1µF
I
L
= 1mA
2
1
0
8
-1
C
L
= 11µF
I
L
= 1mA
INPUT (V)
6
4
2
-0.2
0.0
0.2 0.4 0.6
TIME (ms)
0.8
1.0
INPUT (V)
6
4
2
-0.2
0.0
0.2 0.4 0.6
TIME (ms)
0.8
1.0
Ripple Voltage
vs. Frequency
100
100
RIPPLE VOLTAGE (dB)
Ripple Voltage
vs. Frequency
100
RIPPLE VOLTAGE (dB)
Ripple Voltage
vs. Frequency
RIPPLE VOLTAGE (dB)
80
60
40
20
0
80
60
40
20
0
80
60
40
20
0
I
L
= 100µA
C
L
= 1µF
V
IN
= V
OUT
+ 1
I
L
= 1mA
C
L
= 1µF
V
IN
= V
OUT
+ 1
100x10
0
1x10
3
10x10
3
100x10
3
1x10
6
I
L
= 50mA
C
L
= 1µF
V
IN
= V
OUT
+ 1
100x10
0
1x10
3
10x10
3
100x10
3
10x10
1x10
6
10x10
0
100x10
0
1x10
3
10x10
3
100x10
3
1x10
6
10x10
0
FREQUENCY (Hz)
FREQUENCY (Hz)
0
FREQUENCY (Hz)
August 2004
5
MIC5213
嵌入式系统
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