MIC5365/6
High-Performance Single 150 mA LDO
Features
General Description
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The MIC5365/6 are advanced general purpose linear
regulators offering high power supply rejection (PSRR)
in an ultra-small 1 mm × 1 mm package. The MIC5366
includes an auto-discharge feature that is activated
when the enable pin is low. The MIC5365/6 is capable
of sourcing 150 mA output current and offers high
PSRR making it an ideal solution for any portable
electronic application.
2.5V to 5.5V Input Voltage Range
150 mA Guaranteed Output Current
Stable with 1 µF Ceramic Output Capacitors
Low Dropout Voltage (155 mV at 150 mA)
Excellent Load/Line Transient Response
Low Quiescent Current: 29 µA
High PSRR: 70 dB
Output Discharge Circuit: MIC5366
High Output Accuracy
- ±2% Initial Accuracy
• Thermal Shutdown and Current Limit Protection
• Tiny 1 mm × 1 mm Thin DFN, SC-70-5, and Thin
SOT23-5 Packages
Applications
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Mobile Phones
Digital Cameras
GPS, PMP, PDAs, and Handhelds
Portable Electronics
Ideal for battery-powered applications, the MIC5365/6
offers 2% initial accuracy, low dropout voltage (155 mV
@ 150 mA), and low ground current (typically 29 µA).
The MIC5365/6 can also be put into a zero-off-mode
current state, drawing virtually no current when
disabled.
The MIC5365/6 is available in several advanced
packages including a lead-free (RoHS-compliant)
1 mm × 1 mm Thin DFN occupying only 1 mm2 of PCB
area, a 75% reduction in board area compared to
SC-70 and 2 mm × 2 mm TDFN packages. It is also
available in a thin SOT23-5 package.
The MIC5365/6 have an operating
temperature range of –40°C to 125°C.
junction
Package Types
MIC5365/6
4-Lead TDFN (MT)
2021 Microchip Technology Inc. and its subsidiaries
MIC5365/6
5-Lead TSOT23-5 (D5)
5-Lead SC-70 (C5)
DS20006605A-page 1
MIC5365/6
Typical Application Circuit
Functional Block Diagrams
MIC5365
MIC53666
DS20006605A-page 2
2021 Microchip Technology Inc. and its subsidiaries
MIC5365/6
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltage (VIN) ......................................................................................................................................... 0V to +6V
Enable Voltage (VEN) ..........................................................................................................................................0V to VIN
Power Dissipation (PD), Note 1.............................................................................................................. Internally Limited
ESD Rating, Note 2.................................................................................................................................................... 2 kV
Operating Ratings ‡
Supply Voltage (VIN) ................................................................................................................................. +2.5V to +5.5V
Enable Voltage (VEN) ..........................................................................................................................................0V to VIN
† 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.
Note 1: The maximum allowable power dissipation of any TA (ambient temperature) is PD(MAX) = (TJ(MAX) – TA)/θJA.
Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the
regulator will go into thermal shutdown.
2: Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5 kΩ in series
with 100 pF.
ELECTRICAL CHARACTERISTICS
Electrical Characteristics: VIN = VEN = VOUT + 1V; CIN = COUT = 1 µF; IOUT = 100 µA; TA = +25°C; Bold values are
valid for –40°C to +125°C unless noted. (Note 1).
Parameters
Output Voltage Accuracy
Symbol
VOUT
Min.
Typ.
Max.
–2.0
—
+2.0
–3.0
—
+3.0
0.3
%
VIN = VOUT +1V to 5.5V; IOUT = 100 µA
%
—
0.02
Load Regulation
ΔVOUT/VOUT
—
0.3
1
—
55
110
Ground Pin Current
IGND
Ground Pin Current in
Shutdown
ISHDN
Ripple Rejection
PSRR
IOUT = 100 µA to 150 mA
IOUT = 50 mA; VOUT ≥ 2.8V
—
155
310
—
60
135
—
180
380
—
29
39
µA
IOUT = 0 mA
—
0.05
1
µA
VEN ≤ 0.2V
—
80
—
—
65
—
Current Limit
ILIM
200
325
550
Output Voltage Noise
eN
—
200
—
Auto-Discharge NFET
Resistance
RDSCG
—
30
—
VIL
—
—
0.2
VIH
1.2
—
—
mV
2021 Microchip Technology Inc. and its subsidiaries
IOUT = 150 mA; VOUT ≥ 2.8V
IOUT = 50 mA; VOUT < 2.8V
IOUT = 150 mA; VOUT < 2.8V
dB
mA
f = up to 1 kHz; COUT = 1 µF
f = 1 kHz to 10 kHz, COUT = 1 μf
VOUT = 0V
µVRMS COUT = 1µF, 10 Hz to 100 kHz
Ω
Enable Inputs
Enable Input Voltage
Variation from nominal VOUT
Variation from nominal VOUT;
–40°C to +125°C
ΔVOUT/
VOUT
VDO
Conditions
%
Line Regulation
Dropout Voltage
Units
V
MIC5366 Only;
VEN = 0V; VIN = 3.6V, IOUT = –3 mA
Logic Low
Logic High
DS20006605A-page 3
MIC5365/6
ELECTRICAL CHARACTERISTICS
Electrical Characteristics: VIN = VEN = VOUT + 1V; CIN = COUT = 1 µF; IOUT = 100 µA; TA = +25°C; Bold values are
valid for –40°C to +125°C unless noted. (Note 1).
Parameters
Symbol
Min.
Typ.
Max.
IIL
—
0.01
1
IIH
—
0.01
1
tON
—
50
125
Enable Input Current
Turn-On Time
Note 1:
Units
Conditions
VIL ≤ 0.2V
µA
VIH ≥ 1.2V
µs
COUT = 1 μF; IOUT = 150 mA
Specification for packaged product only.
TEMPERATURE SPECIFICATIONS
Parameters
Symbol
Min.
Typ.
Max.
Units
Conditions
Maximum Junction Temperature Range TJ(MAX)
–40
—
+150
°C
Storage Temperature Range
TS
–65
—
+150
°C
—
Lead Temperature
—
—
—
+260
°C
Soldering, 3 sec.
Junction Temperature
TJ
–40
—
+125
°C
—
—
240
—
JA
—
253
—
°C/W
—
—
256.5
—
Temperature Ranges
Package Thermal Resistances
Thermal Resistance, TDFN-4
Thermal Resistance, TSOT23-5
Thermal Resistance, SC-70-5
Note 1:
Note 1
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., TA, TJ, 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.
DS20006605A-page 4
2021 Microchip Technology Inc. and its subsidiaries
MIC5365/6
2.0
Note:
TYPICAL PERFORMANCE CURVES
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
38
36
100μA
150mA
34
32
30
75mA
100μA
28
150mA
26
24
VIN = VOUT +1V
VOUT = 2.5V
COUT = 1μF
0
10
FIGURE 2-1:
Ratio.
VEN = V IN
VOUT = 3.3V
CIN = C OUT = 1μF
22
100
1k
10k 100k
FREQUENCY (Hz)
1M
Power Supply Rejection
160
20
2.5
3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
FIGURE 2-4:
Voltage.
5.5
Ground Current vs. Supply
40
140
38
120
36
100
80
34
60
32
40
20
0
02
FIGURE 2-2:
Current.
200
VOUT = 3.3V
CIN = C OUT = 1μF
55 07 5 100 125 150
LOAD CURRENT (mA)
Dropout Voltage vs. Load
VOUT = 3.3V
CIN = C OUT = 1μF
150m A
100m A
50mA
50
10mA
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 2-3:
Temperature.
28
02
55 07 5 100 125 150
LOAD CURRENT (mA)
FIGURE 2-5:
Current.
Ground Current vs. Load
40
38 150mA
150
100
VIN = V EN = V OUT + 1V
VOUT = 3.3V
CIN = C OUT = 1μF
30
Dropout Voltage vs.
2021 Microchip Technology Inc. and its subsidiaries
36
34
100mA
32 50mA
30
100μA
28
26
24
VIN = V EN = V OUT + 1V
VOUT = 3.3V
22
CIN = C OUT = 1μF
20
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 2-6:
Temperature.
Ground Current vs.
DS20006605A-page 5
MIC5365/6
400
3.50
3.45
350
3.40
3.35
300
3.30
3.25
VIN = V EN = V OUT + 1V
VOUT = 3.3V
CIN = C OUT = 1μF
COUT = 1μF/10V
3.20
3.15
3.10
0
20 40 60 80 100 120 140 160
LOAD CURRENT (mA)
FIGURE 2-7:
Current.
3.4
3.3
Output Voltage vs. Load
3.1
3.0
2.9
VOUT = 3.3V
CIN = C OUT = 1μF
200
3.0
3.5
4.0
4.5
5.0
SUPPLY VOLTAGE (V)
FIGURE 2-10:
Voltage.
5.5
Current Limit vs. Supply
10
1mA
3.2
250
50mA
1
150mA
0.1
2.8
2.7
2.6
2.5
2.5
0.01 VIN = V EN = 4.5V
VEN = V IN
VOUT = 3.3V
CIN = C OUT = 1μF
3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
FIGURE 2-8:
Voltage.
VOUT = 2.8V
CIN = C OUT = 1μF
Noise (10Hz to 100kHz) = 198.19μV
5.5
Output Voltage vs. Supply
0.001
10
100
RMS
1k 10k 100k 1M 10M
FREQUENCY (Hz)
FIGURE 2-11:
Density.
Output Noise Spectral
FIGURE 2-12:
Enable Turn-On.
3.5
3.4
3.3
3.2
3.1
VIN = V OUT + 1V
VOUT = 3.3V
CIN = C OUT = 1μF
IOUT = 150m A
3.0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 2-9:
Temperature.
DS20006605A-page 6
Output Voltage vs.
2021 Microchip Technology Inc. and its subsidiaries
MIC5365/6
FIGURE 2-13:
Enable Turn-On.
FIGURE 2-16:
Line Transient.
FIGURE 2-14:
Load Transient.
FIGURE 2-17:
(No Load).
MIC5366 Auto Discharge
FIGURE 2-15:
Load Transient.
2021 Microchip Technology Inc. and its subsidiaries
DS20006605A-page 7
MIC5365/6
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
Pin Number
Pin Name
TDFN-4
Pin Name
TSOT23-5
Pin Name
SC70-5
1
VOUT
—
—
Description
Output Voltage.
1
—
VIN
VIN
Supply Input.
2
GND
GND
GND
Ground.
3
EN
EN
EN
Enable Input: Active-high. High = ON; Low = OFF. Do not
leave floating.
4
VIN
—
—
Supply Input.
4
—
NC
NC
No Connect. Not internally connected.
5
—
VOUT
VOUT
EP
HS Pad
N/A
N/A
DS20006605A-page 8
Output Voltage.
Exposed heat sink pad.
2021 Microchip Technology Inc. and its subsidiaries
MIC5365/6
4.0
APPLICATION INFORMATION
MIC5365 and MIC5366 are low noise 150 mA LDOs.
The MIC5366 includes an auto-discharge circuit that is
switched on when the regulator is disabled through the
enable pin. The MIC5365/6 regulator is fully protected
from damage due to fault conditions, offering linear
current limiting and thermal shutdown.
4.1
Input Capacitor
The MIC5365/6 is a high-performance, high-bandwidth
device. An input capacitor of 1 µF capacitor is required
from the input to ground to provide stability. Low-ESR
ceramic capacitors provide optimal performance at a
minimum of space. Additional high-frequency
capacitors, such as small valued NPO dielectric type
capacitors, help filter out high-frequency noise and are
good practice in any RF-based circuit. X5R or X7R
dielectrics are recommended for the input capacitor.
Y5V dielectrics lose most of their capacitance over
temperature and are therefore, not recommended.
4.2
Output Capacitor
The MIC5365/6 requires an output capacitor of 1 µF or
greater to maintain stability. The design is optimized for
use with low-ESR ceramic chip capacitors. High-ESR
capacitors may cause high frequency oscillation. The
output capacitor can be increased, but performance
has been optimized for a 1 µF ceramic output capacitor
and does not improve significantly with larger
capacitance.
X7R/X5R dielectric-type ceramic capacitors are
recommended because of their temperature
performance. X7R type capacitors change capacitance
by 15% over their operating temperature range and are
the most stable type of ceramic capacitors. Z5U and
Y5V dielectric capacitors change value by as much as
50% and 60%, respectively, over their operating
temperature ranges. To use a ceramic chip capacitor
with Y5V dielectric, the value must be much higher than
an X7R ceramic capacitor to ensure the same
minimum capacitance over the equivalent operating
temperature range.
4.3
4.5
Thermal Considerations
The MIC5365/6 is designed to provide 150 mA of
continuous current in a very small package. Maximum
ambient operating temperature can be calculated
based on the output current and the voltage drop
across the part. For example if the input voltage is 3.6V,
the output voltage is 2.8V, and the output current =
150 mA. The actual power dissipation of the regulator
circuit can be determined using the equation
Equation 4-1:
EQUATION 4-1:
P D = V IN – V OUT I OUT + V IN I GND
Because this device is CMOS and the ground current
is typically
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