MIC5200
Micrel
MIC5200
100mA Low-Dropout Voltage Regulator
Preliminary Information
General Description
The MIC5200 is an efficient linear voltage regulator with very
low dropout voltage (typically 17mV at light loads and 200mV
at 100mA), and very low ground current (1mA at 100mA
output), offering better than 1% initial accuracy with a logic
compatible ON/OFF switching input. Designed especially for
hand-held battery powered devices, the MIC5200 is switched
by a CMOS or TTL compatible logic signal. The ENABLE
control may be tied directly to V
IN
if unneeded. When disabled,
power consumption drops nearly to zero. The ground current
of the MIC5200 increases only slightly in dropout, further
prolonging battery life. Key MIC5200 features include protec-
tion against reversed battery, current limiting, and over-
temperature shutdown.
The MIC5200 is available in several fixed voltages and
accuracy configurations. Other options are available; contact
Micrel for details.
Features
•
•
•
•
•
•
•
•
•
•
•
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
Zero OFF mode current
Logic-controlled electronic shutdown
Available in 8-lead SOIC, MM8™ 8-lead MSOP,
and SOT-223 packages
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
MIC5200-3.0BM
MIC5200-3.3BM
MIC5200-4.8BM
MIC5200-5.0BM
MIC5200-3.3BMM
MIC5200-5.0BMM
MIC5200-3.0BS
MIC5200-3.3BS
MIC5200-4.8BS
MIC5200-5.0BS
Voltage
3.0
3.3
4.85
5.0
3.3V
5.0V
3.0
3.3
4.85
5.0
Accuracy
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
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
–40°C to +125°C
–40°C to +125°C
Package
SO-8
SO-8
SO-8
SO-8
MSOP-8
MSOP-8
SOT-223
SOT-223
SOT-223
SOT-223
Other voltages available. Contact Micrel for details.
Typical Application
MIC5200-3.3
Output
1µF
Enable
3-123
July 1998
MIC5200
Micrel
Pin Configuration
OUT
OUT
NC
GND
IN
IN
NC
EN
1 2
3
IN GND OUT
MIC5200-x.xBS
(SOT-223)
MIC5200-x.xBM
(SO-8)
MIC5200-x.xBMM
(MSOP-8)
EN may be tied directly to V
IN
Pin Description
Pin Number
SOT-223
3
Pin Number
SO-8, MSOP-8
1, 2
3, 6
2,
TAB
4
5
1
7, 8
Pin Name
OUT
NC
GND
EN
IN
Pin Function
Output: Pins 1 and 2 must be externally connected together.
(not internally connected): Connect to ground plane for lowest thermal
resistance.
Ground: Ground pin and
TAB
are internally connected.
Enable/Shutdown (Input): TTL compatible input. High = enabled;
low = shutdown.
Supply Input: Pins 7 and 8 must be extenally connected together.
Absolute Maximum Ratings
Power Dissipation ............................................... Internally Limited
Lead Temperature (soldering, 5 sec.) .................................. 260°C
Operating Junction Temperature Range ............. –40°C to +125°C
Input Supply Voltage ................................................ –20V to +60V
Enable Input Voltage ................................................ –20V to +60V
Thermal Characteristics
SOT-223
(θ
JC
) ..................................................................... 15°C/W
SO-8
(θ
JA
) ..................................................................... See Note 1
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.
Recommended Operating Conditions
Input Voltage ............................................................... 2.5V to 26V
Operating Junction Temperature Range ............. –40°C to +125°C
Enable Input Voltage .................................................... –20V to V
IN
July 1998
3-124
MIC5200
Micrel
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.
Unless otherwise specified, V
IN
= V
OUT
+ 1V, I
L
= 1mA, C
L
= 3.3µF, and V
ENABLE
≥
2.0V
Symbol
V
O
∆V
O
∆T
∆V
O
V
IN
∆V
O
V
OUT
V
IN
– V
O
Parameter
Output Voltage
Accuracy
Output Voltage
Temperature Coef.
Line Regulation
Load Regulation
Conditions
Variation from specified V
OUT
(Note 2)
V
IN
= V
OUT
+ 1 V to 26V
I
L
= 0.1mA to 100mA (Note 3)
Min
–1
–2
40
0.004
0.04
Typical
Max
1
2
150
0.10
0.40
0.16
0.30
Units
%
ppm/°C
%
%
Dropout Voltage
(Note 4)
I
L
= 100µA
I
L
= 20mA
I
L
= 30mA
I
L
= 50mA
I
L
= 100mA
V
ENABLE
≤
0.7V (Shutdown)
V
ENABLE
≥
2.0V, I
L
= 100µA
I
L
= 20mA
I
L
= 30mA
I
L
= 50mA
I
L
= 100mA
V
IN
= 0.5V less than specified V
OUT
I
L
= 100µA (Note 5)
V
OUT
= 0V
(Note 6)
100
17
130
150
190
230
0.01
130
270
330
500
1000
70
270
250
0.05
100
mV
350
10
350
µA
µA
I
GND
I
GND
Quiescent Current
Ground Pin Current
3
1500
dB
330
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
ENABLE Input
V
IL
I
IL
I
IH
Note 1:
Input Voltage Level
Logic Low
Logic High
ENABLE Input Current
OFF
ON
V
IL
≤
0.7V
V
IH
≥
2.0V
0.7
2.0
0.01
15
1
50
µA
V
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
θ
JC
of the MIC5200-xxBS is 15°C/W and
θ
JA
for the MIC5200BM is 160°C/W
mounted on a PC board (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.
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.
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
3-125
July 1998
MIC5200
Micrel
Typical Characteristics
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
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)
July 1998
3-126
MIC5200
Micrel
Short Circuit Current
vs. Input Voltage
SHORT CIRCUIT CURRENT (mA)
OUTPUT (mA)
∆
OUTPUT (mV)
Load Transient
OUTPUT (mA)
∆
OUTPUT (mV)
Load Transient
20
10
0
-10
-20
300
-30
200
100
0
-10
0
10
20
TIME (ms)
30
40
C
L
= 47µF
300
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
20
10
0
-10
-20
300
-30
200
100
0
-2
0
2
4
6
TIME (ms)
8
10
C
L
= 4.7µF
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
3
8
-10
6
4
2
-0.2
0
0.2
0.4
TIME (ms)
0.6
0.8
INPUT (V)
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)
INPUT (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
I
L
= 1mA
ON
OFF
0.01
I
L
= 100mA
1x10
0
10x10
0
100x10
0
1x10
3
10x10
3
100x10
3
FREQUENCY (Hz)
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)
3-127
July 1998
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
