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MIC5207
180mA Low-Noise LDO Regulator
General Description
The MIC5207 is an efficient linear voltage regulator with
ultra-low-noise output, very low dropout voltage (typically
17mV at light loads and 165mV at 150mA), and very low
ground current (720µA at 100mA 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 overtemperature
shutdown.
The MIC5207 is available in fixed and adjustable output
voltage versions in a small SOT-23-5 package. Contact
Micrel for details.
For low-dropout regulators that are stable with ceramic
output capacitors, see the µCap MIC5245/6/7 family.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
•
•
Ultra-low-noise output
High output voltage accuracy
Guaranteed 180mA 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
Applications
•
•
•
•
•
•
•
Cellular telephones
Laptop, notebook, and palmtop computers
Battery-powered equipment
PCMCIA V
CC
and V
PP
regulation/switching
Consumer/personal electronics
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
Typical Application
Battery-Powered Regulator Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
December 2007
M9999-123107
Micrel, Inc.
MIC5207
Ordering Information
Part Number
MIC5207-1.8BD5
MIC5207BM5
MIC5207-1.8BM5
MIC5207-2.5BM5
MIC5207-2.8BM5
MIC5207-3.0BM5
MIC5207-3.2BM5
MIC5207-3.3BM5
MIC5207-3.6BM5
MIC5207-3.8BM5
MIC5207-4.0BM5
MIC5207-5.0BM5
MIC5207-3.3BZ***
MIC5207-1.8YD5
MIC5207YM5
MIC5207-1.8YM5
MIC5207-2.5YM5
MIC5207-2.8YM5
MIC5207-2.9YM5
MIC5207-3.0YM5
MIC5207-3.1YM5
MIC5207-3.2YM5
MIC5207-3.3YM5
MIC5207-3.6YM5
MIC5207-3.8YM5
MIC5207-4.0YM5
MIC5207-5.0YM5
MIC5207-3.3YZ***
*
Marking
NE18
LEAA
LE18
LE25
LE28
LE30
LE32
LE33
LE36
LE38
LE40
LE50
--
NE18**
LEAA**
LE18**
LE25**
LE28**
LE29**
LE30**
LE31**
LE32**
LE33**
LE36**
LE38**
LE40**
LE50**
--
Voltage*
1.8V
Adj.
1.8V
2.5V
2.8V
3.0V
3.2V
3.3V
3.6V
3.8V
4.0V
5.0V
3.3V
1.8V
Adj.
1.8V
2.5V
2.8V
2.9V
3.0V
3.1V
3.2V
3.3V
3.6V
3.8V
4.0V
5.0V
3.3V
Junction Temp. Range
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
Package
5-Pin Thin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
3-Pin TO-92
5-Pin Thin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
3-Pin TO-92
Lead Finish
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Other voltages available. Contact Micrel for details.
** Under bar ( __ ) symbol may not be to scale.
*** TO-92 Package discontinuance notification issued September 2007. End-of-life-buy offered thru December 31, 2007. Contact factory for
additional information.
December 2007
2
M9999-123107
Micrel, Inc.
MIC5207
Pin Configuration
1
IN
2
3
GND OUT
(Bottom View)
MIC5207BM5/YM5 (M5)
(Adjustable Voltage)
MIC5207-x.xBM5/YM5 (M5)
MIC5207-x.xBD5/YD5 (D5)
(Fixed Voltage)
MIC5207-x.xBZ/YZ (Z)
(Fixed Voltage)
Pin Description
Pin Number
SOT-23-5
1
2
3
4 (fixed)
Pin Number
TO-92
1
2
Pin Name
IN
GND
EN
BYP
Pin Function
Supply Input
Ground
Enable/Shutdown (Input): CMOS compatible input. Logic high = enable,
logic low or open = shutdown. Do not leave floating.
Reference Bypass: Connect external 470pF capacitor to GND to reduce output
noise. May be left open. For 1.8V or 2.5V operation, see “Applications
Information.”
Adjust (Input): Adjustable regulator feedback input. Connect to resistor voltage
divider.
Regulator Output
4 (adj.)
5
3
ADJ
OUT
December 2007
3
M9999-123107
Micrel, Inc.
MIC5207
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
).............................. –20V to +20V
Enable Input Voltage (V
EN
)............................. –20V to +20V
Power Dissipation (P
D
) .......................... Internally Limited
(3)
Lead Temperature (soldering, 5 sec)......................... 260°C
Junction Temperature (T
J
)
All except 1.8V....................................–40°C to +125°C
1.8V ONLY.............................................. 0°C to +125°C
Storage Temperature (T
S
).........................–65°C to +150°C
Operating Ratings
(2)
Supply Input Voltage (V
IN
)............................. +2.5V to +16V
Enable Input Voltage (V
EN
)..................................... 0V to V
IN
Junction Temperature (T
J
)
All except 1.8V.................................... –40°C to +125°C
1.8V ONLY.............................................. 0°C to +125°C
Thermal Resistance (θ
JA
)..........................................
Note 3
MSOP-8 (θ
JA
)
(3)
Electrical Characteristics
V
IN
= V
OUT
+ 1V; I
L
= 100µA; C
L
= 1.0µF; 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.
Symbol
V
O
∆V
O
/∆T
∆V
O
/V
O
∆V
O
/V
O
V
IN
–
V
O
Parameter
Output Voltage Accuracy
Output Voltage
Temperature Coefficient
Line Regulation
Load Regulation
Dropout Voltage,
Note 6
Condition
Variation from nominal V
OUT
Min
–3
–4
Typ
Max
3
4
Units
%
%
ppm/°C
Note 4
V
IN
= V
OUT
+ 1V to 16V
I
L
= 0.1mA to 150mA,
Note 5
I
L
= 100µA
I
L
= 50mA
I
L
= 100mA
I
L
= 150mA
40
0.005
0.05
17
115
140
165
0.01
80
350
720
1800
75
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
%/V
%/V
%
%
mV
mV
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
dB
mA
%/W
I
GND
I
GND
Quiescent Current
Ground Pin Current,
Note 7
V
EN
≤
0.4V (shutdown)
V
EN
≤
0.18V (shutdown)
V
EN
≥
2.0V, I
L
= 100µA
I
L
= 50mA
I
L
= 100mA
I
L
= 150mA
PSRR
I
LIMIT
∆V
O
/∆P
D
Ripple Rejection
Current Limit
Thermal Regulation
V
OUT
= 0V
320
0.05
Note 8
e
no
Output Noise
I
L
= 50mA, C
L
= 2.2µF,
470pF from BYP to GND
260
nV√Hz
December 2007
4
M9999-123107
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