The MIC5200 is an efficient linear voltage regulator
with very low dropout voltage (typically 17 mV at light
loads and 200 mV at 100 mA), and very low ground
current (1 mA at 100 mA 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 protection against reversed battery,
current limiting, and overtemperature shutdown.
The MIC5200 is available in several fixed voltages and
accuracy configurations. Other options are available;
contact Microchip for details.
Applications
•
•
•
•
•
•
•
Typical Application Schematic
MIC5200-3.3
OUTPUT
1μF
ENABLE
2016 Microchip Technology Inc.
DS20005578A-page 1
MIC5200
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Input Supply Voltage ................................................................................................................................... –20V to +60V
Enable Input Voltage ................................................................................................................................... –20V to +60V
Power Dissipation...................................................................................................................................Internally Limited
Operating Ratings ‡
Input Voltage .............................................................................................................................................. +2.5V to +26V
Enable Input Voltage ...................................................................................................................................... –20V to V
IN
† Notice:
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
‡ Notice:
The device is not guaranteed to function outside its operating ratings.
DS20005578A-page 2
2016 Microchip Technology Inc.
MIC5200
TABLE 1-1:
ELECTRICAL CHARACTERISTICS
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
= 1 mA, C
L
= 3.3
μF,
and V
ENABLE
= V
DD
.
(Note
1).
Parameters
Output Voltage Accuracy
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Sym.
V
O
∆V
O
/∆T
∆V
O
/V
IN
∆V
O
/V
OUT
Min.
–1
–2
—
—
—
—
—
—
—
Typ.
—
—
40
0.004
—
0.04
—
17
130
150
190
230
0.01
130
270
330
500
1000
70
270
250
0.05
100
Max.
1
2
150
0.10
0.40
0.16
0.30
—
—
—
—
350
10
—
350
—
—
1500
—
330
—
—
—
Units
%
ppm/°C
Conditions
Variation from specified V
OUT
Note 2
V
IN
= V
OUT
+ 1V to 26V
I
L
= 0.1 mA to 100 mA (Note
3)
I
L
= 100 µA
I
L
= 20 mA
%
%
Dropout Voltage (Note
4)
V
IN
– V
O
—
—
—
mV
I
L
= 30 mA
I
L
= 50 mA
I
L
= 100 mA
Quiescent Current
I
GND
—
—
—
µA
V
ENABLE
≤
0.7V (shutdown)
V
ENABLE
= V
DD
, I
L
= 100 µA
I
L
= 20 mA
Ground Pin Current
I
GND
—
—
—
µA
I
L
= 30 mA
I
L
= 50 mA
I
L
= 100 mA
Ripple Rejection
Ground Pin Current at Dropout
Current Limit
Thermal Regulation
Output Noise
Note 1:
2:
3:
PSRR
I
GNDDO
I
LIMIT
∆V
O
/∆P
D
e
n
—
—
100
—
—
dB
µA
mA
%/W
µV
—
V
IN
= 0.5V less than specified
V
OUT
, I
L
= 100 µA (Note
5)
V
OUT
= 0V
Note 6
—
4:
5:
6:
Specification for packaged product only.
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 0.1 mA to 100 mA. 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 dissipa-
tion is applied, excluding load or line regulation effects. Specifications are for a 100 mA load pulse at V
IN
=
26V for t = 10 ms.
2016 Microchip Technology Inc.
DS20005578A-page 3
MIC5200
TABLE 1-1:
ELECTRICAL CHARACTERISTICS (CONTINUED)
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
= 1 mA, C
L
= 3.3
μF,
and V
ENABLE
= V
DD
.
(Note
1).
Parameters
ENABLE Input
Input Voltage Level, Logic Low
Input Voltage Level, Logic High
Enable Input Current
Note 1:
2:
3:
V
IL
V
IH
I
IL
I
IH
—
2.0
—
—
—
—
0.01
15
0.7
—
1
50
V
µA
OFF
ON
V
IL
≤
0.7V
V
IH
≥
2.0V
Sym.
Min.
Typ.
Max.
Units
Conditions
4:
5:
6:
Specification for packaged product only.
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 0.1 mA to 100 mA. 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 dissipa-
tion is applied, excluding load or line regulation effects. Specifications are for a 100 mA load pulse at V
IN
=
26V for t = 10 ms.
DS20005578A-page 4
2016 Microchip Technology Inc.
MIC5200
TEMPERATURE SPECIFICATIONS
Parameters
Temperature Ranges
Junction Operating Temperature
Range
Lead Temperature
Package Thermal Resistances
Thermal Resistance, SOT-223
Thermal Resistance, SOIC-8
Note 1:
JC
JA
—
—
15
160
—
—
°C/W
°C/W
—
Note 2
T
J
—
–40
—
—
—
+125
+260
°C
°C
Note 1
Soldering, 5s
Sym.
Min.
Typ.
Max.
Units
Conditions
2:
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable
junction temperature and the thermal resistance from junction to air (i.e., T
A
, T
J
,
JA
). Exceeding the
maximum allowable power dissipation will cause the device operating junction temperature to exceed the
maximum +125°C rating. Sustained junction temperatures above +125°C can impact the device reliability.
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 tem-
perature, and the regulator will go into thermal shutdown. The
θ
JC
of the MIC5200-x.xYS is 15°C/W and
θ
JA
for the MIC5200YM is 160°C/W mounted on a PC board (see
据外媒报道，萨里大学（University of Surrey）的研究人员开发出一种无需依赖GPS即可在人口密集的城市地区精确定位设备位置的人工智能系统。该系统可将定位误差从734米缩小到22米以内，这对于自动驾驶汽车和救援车辆等技术的发展意义重大。 图片来源： 萨里大学 在发表于《IEEE Robotics and Automation Letters》的论文中，研究人员介绍了PEn...[详细]
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