MIC5207
180 mA Low-Noise LDO Regulator
Features
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Output Voltage Range: 1.8V – 15V
Ultra-Low-Noise Output
High Output Voltage Accuracy
Guaranteed 180 mA Output
Low Quiescent Current
Low Dropout Voltage
Extremely Tight Load and Line Regulation
Very Low Temperature Coefficient
Current and Thermal Limiting
Reversed-Battery Protection
“Zero” Off-Mode Current
Logic-Controlled Electronic Enable
Cellular Telephones
Laptop, Notebook, and Palmtop Computers
Battery Powered Equipment
PCMCIA V
CC
and V
PP
Regulation/Switching
Consumer/Personal Electronics
SMPS Post-Regulator and DC/DC Modules
High-Efficiency Linear Power Supplies
General Description
The MIC5207 is an efficient linear voltage regulator
with ultra-low-noise output, very low dropout voltage
(typically 17 mV at light loads and 165 mV at 150 mA),
and very low ground current (720 µA at 100 mA
output). The MIC5207 offers better than 3% initial
accuracy.
Designed especially for hand-held, battery-powered
devices, the MIC5207 includes a CMOS or TTL
compatible enable/shutdown control input. When in
shutdown, power consumption drops nearly to zero.
Key MIC5207 features include a reference bypass pin
to improve its already low-noise performance,
reversed-battery protection, current limiting, and over
temperature shutdown.
The MIC5207 is available in fixed and adjustable output
voltage versions in a small SOT-23-5 package. Contact
Microchip for details.
For low-dropout regulators that are stable with ceramic
output capacitors, see the µCap MIC5245/6/7 family.
Applications
Package Types
MIC5207 (A
DJ
.)
SOT-23-5 (M5)
(Top View)
MIC5207 (F
IXED
)
SOT-23-5 (M5)
TSOT-23-5 (D5)
(Top View)
EN GND IN
3
1
2
LEAA
4
ADJ
5
OUT
PART
IDENTIFICATION
EN GND IN
3
1
2
LExx
4
BYP
5
OUT
2017-2018 Microchip Technology Inc.
DS20005719B-page 1
MIC5207
Typical Application Circuit
MIC5207
SOT-23-5
B
ATTERY
-P
OWERED
R
EGULATOR
A
PPLICATION
MIC5207-x.xYM5
V
IN
1
2
5
V
OUT
C
OUT
ENABLE
SHUTDOWN
EN
3
4
ENABLE (PIN 3) MAY BE
CONNECTED DIRECTLY TO
SUPPLY INPUT (PIN 1).
Functional Diagrams
U
LTRA
-L
OW
-N
OISE
F
IXED
R
EGULATOR
V
IN
IN
BYP
C
BYP
(OPTIONAL)
BANDGAP
REF.
V
REF
EN
CURRENT LIMIT
THERMAL SHUTDOWN
MIC5207-X.XYM5
GND
OUT
V
OUT
C
OUT
U
LTRA
-L
OW
-N
OISE
A
DJUSTABLE
R
EGULATOR
IN
OUT
V
OUT
C
OUT
ADJ
BANDGAP
REF.
V
REF
EN
CURRENT LIMIT
THERMAL SHUTDOWN
MIC5207YM5
GND
R1
R2
C
BYP
(OPTIONAL)
V
IN
DS20005719B-page 2
2017-2018 Microchip Technology Inc.
MIC5207
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Input Voltage (V
IN
) .......................................................................................................................... –20V to +20V
Enable Input Voltage (V
EN
) ......................................................................................................................... –20V to +20V
Power Dissipation (P
D
) (Note
1)
............................................................................................................ Internally Limited
Operating Ratings ‡
Supply Input Voltage (V
IN
) ......................................................................................................................... +2.5V to +16V
Adjustable Output Voltage Range (V
OUT
) .................................................................................................. +1.8V to +15V
Enable Input Voltage (V
EN
) .................................................................................................................................0V 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.
Note 1:
The maximum allowable power dissipation at any T
A
(ambient temperature) is P
D(max)
= (T
J(max)
– T
A
) / θ
JA
.
Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regula-
tor will go into thermal shutdown. The θ
JA
of the SOT-23-5 (M5) is 235°C/W soldered on a PC board (see
“Thermal Considerations” for further details).
2017-2018 Microchip Technology Inc.
DS20005719B-page 3
MIC5207
TABLE 1-1:
ELECTRICAL CHARACTERISTICS (Note
1)
Electrical Characteristics:
V
IN
= V
OUT
+ 1V; I
L
= 100 μA; C
L
= 1.0 μF; V
EN
≥ 2.0V; T
J
= +25°C,
bold
values indicate
–40°C ≤ T
J
≤ +125°C except 0°C < T
J
< +125°C for 1.8V; unless noted.
Parameter
Output Voltage Accuracy
Output Voltage
Temperature Coefficient
Line Regulation
Load Regulation
Symbol
V
O
ΔV
O
/ΔT
ΔV
O
/V
O
ΔV
O
/V
O
Min.
–3
–4
—
—
—
—
—
—
—
—
Dropout Voltage,
Note 4
V
IN
– V
O
—
—
—
—
—
Quiescent Current
I
GND
—
—
—
—
—
Ground Pin Current
(Note
5)
I
GND
—
—
—
—
—
Ripple Rejection
Current Limit
Thermal Regulation
Output Noise
PSRR
I
LIMIT
ΔV
O
/ΔP
D
e
n
—
—
—
—
Typ.
—
—
40
0.005
—
0.05
—
17
—
115
—
140
—
165
—
0.01
—
80
—
350
—
720
—
1800
—
75
320
0.05
100
Max.
3
4
—
0.05
0.10
0.5
0.7
60
80
175
250
280
325
300
400
1
5
130
170
650
900
1100
2000
2500
3000
—
500
—
—
dB
mA
%/W
µV
µA
I
L
= 100 mA
I
L
= 150 mA
—
V
OUT
= 0V
Note 6
—
µA
mV
I
L
= 100 mA
I
L
= 150 mA
V
EN
≤ 0.4V (shutdown)
V
EN
≤ 0.18V (shutdown)
V
EN
≥ 2.0V, I
L
= 100 µA
I
L
= 50 mA
Units
%
ppm/°C
%
%
Conditions
Variation from nominal V
OUT
Note 2
V
IN
= V
OUT
+ 1V to 16V
I
L
= 0.1 mA to 150 mA,
Note 3
I
L
= 100 µA
I
L
= 50 mA
DS20005719B-page 4
2017-2018 Microchip Technology Inc.
MIC5207
TABLE 1-1:
ELECTRICAL CHARACTERISTICS (Note
1)
(CONTINUED)
Electrical Characteristics:
V
IN
= V
OUT
+ 1V; I
L
= 100 μA; C
L
= 1.0 μF; V
EN
≥ 2.0V; T
J
= +25°C,
bold
values indicate
–40°C ≤ T
J
≤ +125°C except 0°C < T
J
< +125°C for 1.8V; unless noted.
Parameter
Enable Input
Enable Input Logic-Low
Voltage
Enable Input Logic-High
Voltage
V
IL
V
IH
I
IL
Enable Input Current
I
IH
Note 1:
2:
3:
—
—
2.0
—
—
—
—
—
—
—
0.01
—
5
—
0.4
0.18
—
–1
–2
20
25
µA
V
V
Regulator shutdown
Regulator enable
V
IL
≤ 0.4V
V
IL
≤ 0.18V
V
IH
≥ 2.0V
V
IH
≥ 2.0V
Symbol
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 180 mA. Changes in output voltage due to heat-
ing 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 180 mA load pulse at V
IN
=
16V for t = 10 ms.
2017-2018 Microchip Technology Inc.
DS20005719B-page 5
微控制器 MCU
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