MIC5202
Micrel
MIC5202
Dual 100mA Low-Dropout Voltage Regulator
Preliminary Information
General Description
The MIC5202 is a family of dual linear voltage regulators with
very low dropout voltage (typically 17mV at light loads and
210mV at 100mA), and very low ground current (1mA at
100mA output–each section), offering better than 1% initial
accuracy with a logic compatible ON/OFF switching input.
Designed especially for hand-held battery powered devices,
the MIC5202 is switched by a CMOS or TTL compatible logic
signal. This ENABLE control my be tied directly to V
IN
if
unneeded. When disabled, power consumption drops nearly
to zero. The ground current of the MIC5202 increases only
slightly in dropout, further prolonging battery life. Key MIC5202
features include protection against reversed battery, current
limiting, and over-temperature shutdown.
The MIC5202 is available in several fixed voltages. Other
options are available; contact Micrel for details.
Features
•
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•
•
•
•
•
•
•
•
•
•
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•
•
•
•
•
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High output voltage accuracy
Variety of output voltages
Guaranteed 100mA output
Low quiescent current
Low dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Current and thermal limiting
Reverse-battery protection
Zero OFF mode current
Logic-controlled electronic shutdown
Available in SO-8 package
Cellular Telephones
Laptop, Notebook, and Palmtop Computers
Battery Powered Equipment
PCMCIA V
CC
and V
PP
Regulation/Switching
Bar Code Scanners
SMPS Post-Regulator/ DC to DC Modules
High Efficiency Linear Power Supplies
Applications
3
Ordering Information
Part Number
MIC5202-3.0BM
MIC5202-3.3BM
MIC5202-4.8BM
MIC5202-5.0BM
Volts Accuracy Temperature Range* Package
3.0
3.3
4.85
5.0
1%
1%
1%
1%
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
SO-8
SO-8
SO-8
SO-8
Pin Configuration
VOUT (A)
GROUND
VOUT (B)
GROUND
MIC5202-xxBM
VIN (A)
ENABLE (A)
VIN (B)
ENABLE (B)
* Junction Temperature
Other voltages are available; contact Micrel for details.
Both GROUND pins must be tied to
the same potential. V
IN
(A) and V
IN
(B) may run
from separate supplies.
Typical Application
MIC5202-3.3
Output A
Enable A
Output B
1
µ
(x2)
Enable B
ENABLE pins may be tied directly to V
IN
July 1998
3-135
MIC5202
Micrel
Absolute Maximum Ratings
Absolute Maximum Ratings
indicate limits beyond which damage
to the device may occur. Electrical specifications do not apply when
operating the device beyond its specified
Operating Ratings.
Power Dissipation ............................................... Internally Limited
Lead Temperature (Soldering, 5 seconds) .......................... 260°C
Operating Junction Temperature Range ............. –40°C to +125°C
Input Supply Voltage ................................................ –20V to +60V
ENABLE Input Voltage ............................................. –20V to +60V
SO-8
θ
JA
....................................................................... See Note 1
Recommended Operating Conditions
Input Voltage ............................................................... 2.5V to 26V
Operating Junction Temperature Range ............. –40°C to +125°C
ENABLE Input Voltage ..................................................... 0V to V
IN
Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C and limits in
boldface
apply over the junction temperature range of –40°C to +125°C.
Specifications are for each half of the (dual) MIC5202. Unless otherwise specified, V
IN
= V
OUT
+ 1V, I
L
= 1mA, C
L
= 10µF, and V
CONTROL
≥
2.0V.
Symbol
V
O
∆V
O
∆T
∆V
O
V
O
∆V
O
V
O
V
IN
– V
O
Parameter
Output Voltage
Output Voltage
Temperature Coef.
Line Regulation
Load Regulation
Dropout Voltage
(Note 4)
Condition
Variation from specified V
OUT
Accuracy
(Note 2)
V
IN
= V
OUT
+ 1 V to 26V
I
L
= 0.1mA to 100mA (Note 3)
I
L
= 100µA
I
L
= 20mA
I
L
= 30mA
I
L
= 50mA
I
L
= 100mA
V
CONTROL
≤
0.7V (Shutdown)
V
CONTROL
≥
2.0V, I
L
= 100µA
I
L
= 20mA
I
L
= 30mA
I
L
= 50mA
I
L
= 100mA
V
IN
= 0.5V less specified V
OUT
, I
L
= 100µA
(Note 5)
V
OUT
= 0V
(Note 6)
Min
–1
–2
40
0.004
0.04
17
130
150
180
225
0.01
170
270
330
500
1200
75
270
280
0.05
100
330
Typ
Max
1
2
150
0.10
0.40
0.16
0.30
Units
%
ppm/°C
%
%
mV
350
µA
µA
I
Q
I
GND
Quiescent Current
Ground Pin Current
1500
dB
µA
mA
%/W
µV
PSRR
I
GNDDO
I
LIMIT
∆V
O
∆P
D
e
n
Ripple Rejection
Ground Pin
Current at Dropout
Current Limit
Thermal Regulation
Output Noise
Control Input
V
IL
I
IL
IH
Input Voltage Level
Logic Low
Logic High
Control Input Current
OFF
ON
V
IL
≤
0.7V
V
IH
≥
2.0V
0.7
2.0
0.01
8
V
µA
50
3-136
July 1998
MIC5202
Note 1:
Micrel
Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not
apply when operating the device outside of its rated operating conditions. 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
(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. The junction to ambient thermal resistance of the MIC5202BM is 160°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. Parts are tested for load regulation
in the load range from 0.1mA to 100mA. 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 a 100mA load pulse at V
IN
= 26V for t = 10ms, and is measured separately
for each section.
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
3
Typical Characteristics
(Each Regulator—2 Regulators/Package)
Dropout Voltage
vs. Output Current
250
DROPOUT VOLTAGE (mV)
DROPOUT VOLTAGE (V)
200
150
100
50
0
0.01
0.4
OUTPUT VOLTAGE (V)
Dropout Voltage
vs. Temperature
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
Dropout
Characteristics
0.3
I
L
= 100mA
I
L
= 100mA
0.2
0.1
I
L
= 1mA
I
L
= 100µA, 1mA
0.1
1
10
100 1000
OUTPUT CURRENT (mA)
0.0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
2
4
6
8
INPUT VOLTAGE (V)
10
Ground Current
vs. Output Current
10
GROUND CURRENT (mA)
GROUND CURRENT (mA)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
Ground Current
vs. Supply Voltage
OUTPUT VOLTAGE (V)
Output Voltage
vs. Output Current
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.0
0.1
0.2
OUTPUT CURRENT (A)
0.3
C
IN
= 2.2µF
C
OUT
= 4.7µF
I
L
= 100mA
1
I
L
= 1mA
0.1
0.01
0.1
1
10
100
OUTPUT CURRENT (mA)
2
4
6
8
SUPPLY VOLTAGE (V)
10
July 1998
3-137
MIC5202
Micrel
Ground Current
vs. Temperature
0.30
GROUND CURRENT (mA)
I
LOAD
= 100µA
C
IN
= 2.2µF
C
OUT
= 4.7µF
GROUND CURRENT (mA)
1.5
1.4
1.3
1.2
1.1
1.0
-50
Ground Current
vs. Temperature
I
LOAD
= 100mA
C
IN
= 2.2µF
C
OUT
= 4.7µF
∆
OUTPUT (mV)
Thermal Regulation
(3.3V Version)
100
50
0
200
-50
100
0
0
5
10 15 20 25 30 35
TIME (ms)
C
L
= 4.7
µF
0.25
0.20
0.15
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
0
50
100
TEMPERATURE (°C)
150
3.6
OUTPUT VOLTAGE (V)
3.5
3.4
3.3
3.2
3.1
Output Voltage vs. Temp.
(3.3V Version)
OUTPUT CURRENT (mA)
C
IN
= 2.2µF
C
OUT
= 4.7µF
Output Current
vs. Temperature
MIN. INPUT VOLTAGE (V)
300
280
260
240
220
200
180
160
140
V
OUT
= 0V
(SHORT CIRCUIT)
V
OUT
= 3.3V
3.30
3.29
3.28
3.27
3.26
3.25
3.24
3.23
3.22
LOAD (mA)
-100
-5
Minimum Input Voltage
vs. Temperature
C
IN
= 2.2µF
C
OUT
= 4.7µF
I
LOAD
= 1mA
3 DEVICES:
HI / AVG / LO
CURVES APPLICABLE
AT 100µA AND 100mA
3.0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
120
100
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
3.21
3.20
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
Short Circuit Current
vs. Input Voltage
SHORT CIRCUIT CURRENT (mA)
OUTPUT (mA)
∆
OUTPUT (mV)
250
200
150
100
50
0
1
C
IN
= 2.2µF
C
OUT
= 4.7µF
V
OUT
= 3.3V
2
3
4
5
6
INPUT VOLTAGE (V)
7
0
-10
-20
-30
300
200
100
0
-2
0
OUTPUT (mA)
∆
OUTPUT (mV)
300
Load Transient
20
10
Load Transient
20
10
0
-10
-20
-30
300
200
100
0
-10
0
10
20
TIME (ms)
30
40
C
L
= 4.7µF
C
L
= 47µF
2
4
6
TIME (ms)
8
10
Supply Current vs. Supply
Voltage (3.3V Version)
∆
OUTPUT (mV)
Line Transient
5
0
-5
C
L
= 1
µF
I
L
= 1mA
∆
OUTPUT (mV)
Line Transient
15
10
5
0
8
-5
6
4
2
-0.1
0
0.1 0.2 0.3 0.4 0.5 0.6
TIME (ms)
C
L
= 10
µF
I
L
= 1mA
120
SUPPLY CURRENT (mA)
100
80
60
40
20
0
0 1 2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
R
L
= 33Ω
10
8
-10
6
4
2
-0.2
0
0.2
0.4
TIME (ms)
0.6
0.8
INPUT (V)
3-138
INPUT (V)
July 1998
MIC5202
Micrel
Supply Current vs. Supply
Voltage (3.3V Version)
60
OUTPUT (V)
SUPPLY CURRENT (mA)
50
40
30
ENABLE (V)
20
10
0
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
7
R
L
= 66Ω
5
4
3
2
1
0
4
-1
2
0
-2
-50
Enable Transient
(3.3V Version)
5
4
3
2
1
0
4
-1
2
0
-2
-50
OUTPUT (V)
Enable Transient
(3.3V Version)
C
L
= 4.7
µF
I
L
= 1mA
C
L
= 4.7
µF
I
L
= 100mA
0
50 100 150 200 250 300
TIME (µs)
ENABLE (V)
0
50 100 150 200 250 300
TIME (µs)
Output Impedance
1000
Enable Current Threshold
vs. Temperature
35
ENABLE CURRENT (µA)
ENABLE VOLTAGE (V)
1.6
C
IN
= 2.2µF
C
OUT
= 4.7µF
1.4
1.2
1
0.8
0.6
30
25
20
15
10
5
0
V
EN
= 2V
V
EN
= 5V
Enable Voltage Threshold
vs. Temperature
C
IN
= 2.2µF
C
OUT
= 4.7µF
OUTPUT IMPEDANCE (Ω)
100
10
1
0.1
I
L
= 100µA
3
I
L
= 1mA
ON
OFF
0.01
I
L
= 100mA
1x10
0
10x10
0
100x10
0
1x10
3
10x10
3
100x10
3
FREQUENCY (Hz)
Ripple
vs. Frequency
100
100
1x10
6
0.001
-5
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
0.4
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
Ripple
vs. Frequency
100
Ripple
vs. Frequency
RIPPLE VOLTAGE (dB)
RIPPLE VOLTAGE (dB)
80
60
40
20
0
RIPPLE VOLTAGE (dB)
I
L
= 100µA
80
I
L
= 1mA
60
40
20
0
80
I
L
= 100mA
60
40
20
0
10x10
0
100x10
0
3
10x10
3
100x10
3
1x10
6
10x10
0
100x10
0
1x10
3
10x10
3
100x10
3
1x10
6
10x10
0
100x10
0
1x10
3
10x10
3
100x10
3
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
July 1998
3-139
1x10
6
1x10
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