MIC5233
High Input Voltage, Low I
Q
µCap LDO Regulator
Features
• AEC-Q100 Qualified and PPAP Capable;
Available for 5-Lead SOT23 Package Only
• Wide Input Voltage Range: 2.3V to 36V
• Ultra-Low Ground Current: 18 µA
• Low Dropout Voltage of 270 mV at 100 mA
• High Output Accuracy of ±2.0% Overtemperature
• µCap: Stable with Ceramic or Tantalum
Capacitors
• Excellent Line and Load Regulation Specifications
• Near Zero Shutdown Current: Typical 0.1 µA
• Reverse Battery Protection
• Reverse Leakage Protection
• Thermal Shutdown and Current Limit Protection
• 5-Lead SOT23 and 3-Lead SOT223 Packages
General Description
The MIC5233 is a 100 mA, highly accurate, low dropout
regulator with high input voltage and ultra-low ground
current. This combination of high voltage and low
ground current makes the MIC5233 ideal for multicell
Li-Ion battery systems.
A µCap LDO design, the MIC5233 is stable with either
ceramic or tantalum output capacitors. It only requires
a 2.2 µF output capacitor for stability.
Features of the MIC5233 include enable input, thermal
shutdown, current limit and reverse battery protection,
and reverse leakage protection.
Available in fixed and adjustable output voltage ver-
sions, the MIC5233 is offered in the 5-lead SOT23 and
3-lead SOT223 packages with a junction temperature
range of –40°C to +125°C.
Applications
• Keep-Alive Supply in Notebook and Portable
Computers
• USB Power Supply
• Logic Supply for High-Voltage Batteries
• Automotive Electronics
• Battery-Powered Systems
• 3-4 Cell Li-Ion Battery Input Range
Typical Application Circuit
Ultra-Low Current Adjustable Regulator
Application
MIC5233YM5
1
5
2
3
EN
4
R2
R1
V
IN
C
IN
= 1.0 μF
OFF ON
V
OUT
C
OUT
= 2.2 μF
CERAMIC
I
GND
= 18 μA
2018-2019 Microchip Technology Inc.
DS20006033D-page 1
MIC5233
Package Types
MIC5233
5-Pin SOT23
(Top View)
MIC5233
3-Pin SOT223
(Top View)
EN GND IN
3
2
1
GND
4
L3xx
4
5
1
2
3
NC OR ADJ OUT
IN GND OUT
DS20006033D-page 2
2018-2019 Microchip Technology Inc.
MIC5233
Functional Block Diagrams
Fixed Output Voltage (SOT23 Package)
IN
EN
ENABLE
R1
V
REF
V
REF
OUT
IN
ENABLE
R1
Fixed Output Voltage (SOT223 Package)
OUT
R2
R2
GND
GND
Adjustable Output Voltage
(SOT223 and SOT23 Packages)
IN
EN
ENABLE
R1
OUT
V
REF
ADJ
R2
GND
2018-2019 Microchip Technology Inc.
DS20006033D-page 3
MIC5233
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings†
Input Supply Voltage (V
IN
)........................................................................................................................... –20V to +38V
Enable Input Voltage (V
EN
) ........................................................................................................................ –0.3V to +38V
Power Dissipation (P
DIS
) ........................................................................................................................Internally Limited
ESD Rating
(Note
1)
.................................................................................................................................. ESD Sensitive
Operating Ratings‡
Input Supply Voltage (V
IN
).......................................................................................................................... +2.3V to +36V
Enable Input Voltage (V
EN
) ............................................................................................................................. 0V to +36V
† 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. Specifications are for packaged product only.
‡
The device is not ensured to function outside its operating ratings.
Note 1:
Devices are ESD sensitive. Handling precautions are recommended.
TABLE 1-1:
ELECTRICAL CHARACTERISTICS
Electrical Characteristics:
T
J
= +25°C with V
IN
= V
OUT
+ 1V; I
OUT
= 100 µA;
Bold
values indicate –40°C
≤
T
J
≤
+125°C,
unless otherwise specified. Specifications for packaged product only.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
Symbol
V
OUT
ΔV
OUT
/ΔV
IN
ΔV
OUT
/V
OUT
V
DO
Min.
–1.0
–2.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Typ.
—
—
0.04
0.25
50
230
—
270
—
18
—
0.25
1
0.1
190
–0.1
Max.
1.0
2.0
0.5
1
—
300
400
400
450
30
35
0.70
2
1
350
—
Units
%
%
%
Conditions
Variation from nominal V
OUT
V
IN
= V
OUT
+ 1V to 36V
I
OUT
= 100 µA to 100 mA
I
OUT
= 100 µA
I
OUT
= 50 mA
I
OUT
= 100 mA
µA
mA
µA
mA
V
I
OUT
= 100 µA
I
OUT
= 50 mA
I
OUT
= 100 mA
V
EN
≤
0.6V; V
IN
= 36V (SOT23
package only)
V
OUT
= 0V
Load = 500Ω; V
IN
= –15V
mV
Ground Current
I
GND
Ground Current in Shutdown
Short-Circuit Current
I
SHDN
I
SC
Output Leakage, Reverse
V
OUT
Polarity Input
(Note
2)
Enable Input (SOT23 Package Only)
Input Low Voltage
V
EN
Input High Voltage
Enable Input Current
I
EN
—
2.0
–1.0
—
—
—
—
—
0.01
0.1
0.5
1.7
0.6
—
1.0
1.0
2.5
7
V
V
µA
ms
Regulator off
Regulator on
V
EN
= 0.6V; regulator off
V
EN
= 2.0V; regulator on
V
EN
= 36V; regulator on
V
IN
applied before EN signal
Start-up Time
Note 1:
t
START
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.
Design guidance only, not production tested.
DS20006033D-page 4
2018-2019 Microchip Technology Inc.
MIC5233
TEMPERATURE SPECIFICATIONS
(1)
Parameters
Temperature Ranges
Junction Operating Temperature Range
Storage Temperature Range
Package Thermal Resistances
Thermal Resistance 5-Lead SOT23
Thermal Resistance 3-Lead SOT223
Note 1:
JA
JA
—
—
235
50
—
—
°C/W
°C/W
—
—
T
J
T
S
–40
–65
—
—
+125
+150
°C
°C
—
—
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.
Design guidance only, not production tested.
2018-2019 Microchip Technology Inc.
DS20006033D-page 5
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