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MIC5210
Dual 150mA LDO Regulator
General Description
The MIC5210 is a dual linear voltage regulator with very
low dropout voltage (typically 10mV at light loads and
140mV at 100mA), very low ground current (225µA at
10mA output), and better than 1% initial accuracy. It also
features individual logic-compatible enable/shutdown
control inputs.
Both regulator outputs can supply up to 150mA at the
same time as long as each regulator’s maximum junction
temperature is not exceeded.
Key features include an undervoltage monitor with an error
flag output, a reference bypass pin to improve its already
low-noise performance (8-pin versions only), reversed-
battery protection, current limiting, and overtemperature
shutdown.
Designed especially for hand-held battery powered
devices, the MIC5210 can be switched by a CMOS or TTL
compatible logic signal, or the enable pin can be
connected to the supply input for 3-terminal operation.
When disabled, power consumption drops nearly to zero.
Dropout ground current is minimized to prolong battery life.
Key features include current limiting, overtemperature
shutdown, and protection against reversed battery.
The MIC5210 is available in 2.7V, 2.8V, 3.0V, 3.3V, 3.6V,
4.0V and 5.0V fixed voltage configurations. Other voltages
are available; contact Micrel for details.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
•
•
Micrel Mini 8™ MSOP package
Up to 150mA per regulator output
Low quiescent current
Low dropout voltage
Wide selection of output voltages
Tight load and line regulation
Low temperature coefficient
Current and thermal limiting
Reversed input polarity protection
Zero off-mode current
Logic-controlled electronic enable
Applications
•
•
•
•
•
•
Cellular telephones
Laptop, notebook, and palmtop computers
Battery-powered equipment
Bar code scanners
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
Typical Application
Low-Noise + Ultralow-Noise (Dual) Regulator
MM8 and Micrel Mini 8 are trademarks of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
September 2006
1
M9999-090806
Micrel, Inc.
MIC5210
Ordering Information
Part Number
Standard
MIC5210-2.7BMM
MIC5210-2.8BMM
MIC5210-2.9BMM
MIC5210-3.0BMM
MIC5210-3.3BMM
MIC5210-3.6BMM
MIC5210-4.0BMM
MIC5210-5.0BMM
MIC5210-2.8/3.0BMM
MP
Marking
Pb-Free
Contact Factory
MIC5210-2.8YMM
Contact Factory
MIC5210-3.0YMM
MIC5210-3.3YMM
Contact Factory
Contact Factory
MIC5210-5.0YMM
MIC5210-MPYMM**
MPY
Marking
Voltage*
Side A/B
2.7V/2.7V
2.8V/2.8V
2.9V/2.9V
3.0V/3.0V
3.3V/3.3V
3.6V/3.6V
4.0V/4.0V
5.0V/5.0V
2.8V/3.0V
Accuracy
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
1.0%
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
Package
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
* Other voltages available. Contact Micrel for details.
** Order Entry P/N for Pb-Free has been abbreviated in compliance with Micrel systems. MIC5210-MPYMM = Full P/N: MIC5210-2.8/3.0YMM.
Voltage Code
2.8
3.0
Key
M
P
September 2006
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M9999-090806
Micrel, Inc.
MIC5210
Pin Configuration
MIC5210BMM
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
OUTA
GND
OUTB
BYPB
ENB
INB
ENA
INA
Pin Function
Regulator Output A
Ground
Regulator Output B
Reference Bypass B: Connect external 470pF capacitor to GND to reduce
output noise in regulator “B”. May be left open.
Enable/Shutdown B (Input): CMOS compatible input. Logic high = enable, logic
low or open = shutdown. Do not leave floating.
Supply Input B
Enable/Shutdown A (Input): CMOS compatible input. Logic high = enable, logic
low or open = shutdown. Do not leave floating.
Supply Input A
September 2006
3
M9999-090806
Micrel, Inc.
MIC5210
Absolute Maximum Ratings
Supply Input Voltage (V
IN
).............................. –20V to +20V
Enable Input Voltage (V
EN
)............................. –20V to +20V
Power Dissipation (P
D
) ..............................Internally Limited
Storage Temperature Range ....................–60°C to +150°C
Lead Temperature (soldering, 5 sec.)........................ 260°C
Operating Ratings
Supply Input Voltage (V
IN
)................................. 2.5V to 16V
Enable Input Voltage (V
EN
)................................... 0V to 16V
Junction Temperature (T
J
) .......................... –40°C to +85°C
Thermal Resistance (θ
JA
)..........................................
Note 1
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, 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 4
Condition
Variation from specified V
OUT
Note 2
V
IN
= V
OUT
+1V to 16V
I
L
= 0.1mA to 150mA (Note
3)
I
L
= 100µA
I
L
= 50mA
I
L
= 100mA
I
L
= 150mA
I
GND
I
GND
Quiescent Current
Ground Pin Current,
Note 5
(per regulator)
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
e
no
Ripple Rejection
Current Limit
Thermal Regulation
Output Noise (Regulator B only)
Frequency = 100Hz, I
L
= 100µA
V
OUT
= 0V
Note 6
I
L
= 50mA, C
L
= 2.2µF,
470pF from BYPB to GND
Min
–1
–2
40
0.004
0.02
10
110
140
165
0.01
80
350
600
1300
75
320
0.05
260
500
0.012
0.05
0.2
0.5
50
70
150
230
250
300
275
350
1
5
125
150
600
800
1000
1500
1900
2500
Typ
Max
1
2
Units
%
%
ppm/°C
%/V
%/V
%
%
mV
mV
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
dB
mA
%/W
nV/√Hz
September 2006
4
M9999-090806
汽车电子
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