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MIC5216
500mA-Peak Output LDO Regulator
General Description
The MIC5216 is an efficient linear voltage regulator with
high peak output current capability, very low dropout
voltage, and better than 1% output voltage accuracy.
Dropout is typically 10mV at light loads and less than
500mV at full load.
The MIC5216 is designed to provide a peak output current
for startup conditions where higher inrush current is
demanded. It features a 500mA peak output rating.
Continuous output current is limited only by package and
layout.
The MIC5216 has an internal undervoltage monitor with a
flag output. It also can be enabled or shutdown by a
CMOS or TTL compatible signal. When disabled, power
consumption drops nearly to zero. Dropout ground current
is minimized to help prolong battery life. Other key features
include reversed-battery protection, current limiting,
overtemperature shutdown, and low noise performance.
The MIC5216 is available in fixed output voltages in
space-saving SOT-23-5 and MM8™ 8-pin power MSOP
packages. For higher power requirements see the
MIC5209 or MIC5237.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
•
Error Flag indicates undervoltage fault
•
Guaranteed 500mA-peak output over the full operating
temperature range
•
Low 500mV maximum dropout voltage at full load
•
Extremely tight load and line regulation
•
Tiny SOT-23-5 and MM8™ power MSOP-8 package
•
Low-noise output
•
Low temperature coefficient
•
Current and thermal limiting
•
Reversed input polarity protection
•
CMOS/TTL-compatible enable/shutdown control
•
Near-zero shutdown current
Applications
•
•
•
•
•
•
Laptop, notebook, and palmtop computers
Cellular telephones and battery-powered equipment
Consumer and personal electronics
PC Card V
CC
and V
PP
regulation and switching
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
Typical Application
5V Low-Noise Regulator
3.3V Low-Noise 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
March 2007
M9999-032307
Micrel, Inc.
MIC5216
Ordering Information
Part Number
Standard
MIC5216-2.5BMM
MIC5216-3.3BMM
MIC5216-5.0BMM
MIC5216-2.5BM5
MIC5216-3.3BM5
MIC5216-3.6BM5
MIC5216-5.0BM5
LH25
LH33
LH36
LH50
Marking
Pb-Free
MIC5216-2.5YMM
MIC5216-3.3YMM
MIC5216-5.0YMM
MIC5216-2.5YM5
MIC5216-3.3YM5
MIC5216-3.6YM5
MIC5216-5.0YM5
LH25
LH33
LH36
LH50
Marking
2.5V
3.3V
5.0V
2.5V
3.3V
3.6V
5.0V
Voltage
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
Package
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
5-Pin SOT-23
March 2007
2
M9999-032307
Micrel, Inc.
MIC5216
Pin Configuration
MIC5216-xxBMM/YMM
MM8™ MSOP-8
Fixed Voltages
MIC5216-xxBM5/YM5
SOT-23-5
Fixed Voltages
Pin Description
Pin Number
MSOP-8
2
5–8
3
1
4
Pin Number
SOT-23-5
1
2
5
3
4
Pin Name
IN
GND
OUT
EN
FLG
Pin Function
Supply Input
Ground: MSOP-8 pins 5 through 8 are internally connected.
Regulator Output
Enable (Input): CMOS compatible control input. Logic high = enable; logic
low or open = shutdown.
Error Flag (Output): Open-Collector output. Active low indicates an output
undervoltage condition.
March 2007
3
M9999-032307
Micrel, Inc.
MIC5216
Absolute Maximum Ratings
Supply Input Voltage (V
IN
).............................. –20V to +20V
Power Dissipation (P
D
) ..............................Internally Limited
Junction Temperature (T
J
) ........................–40°C to +125°C
Lead Temperature (soldering, 5 sec.)........................ 260°C
Operating Ratings
Supply Input Voltage (V
IN
)................................. 2.5V to 12V
Enable Input Voltage (V
EN
)..................................... 0V to V
IN
Junction Temperature (T
J
) ........................ –40°C to +125°C
Thermal Resistance (θ
JA
)..........................................
Note 1
Electrical Characteristics
V
IN
= V
OUT
+1V; C
OUT
= 4.7µF; I
OUT
= 100µA; 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 nominal V
OUT
Note 2
V
IN
= V
OUT
+1V to 12V
I
OUT
= 100µA to 150mA (Note
3)
I
OUT
= 100µA
I
OUT
= 50mA
I
OUT
= 150mA
I
OUT
= 500mA
I
GND
Ground Pin Current,
Notes 5, 6
(per regulator)
V
EN
≥
3.0V, I
OUT
= 100µA
V
EN
≥
3.0V, I
OUT
= 50mA
V
EN
≥
3.0V, I
OUT
= 150mA
V
EN
≥
3.0V, I
OUT
= 500mA
I
GND
PSRR
I
LIMIT
∆V
O
/∆P
D
e
no
Quiescent Current,
Note 6
Ripple Rejection
Current Limit
Thermal Regulation
Output Noise
V
EN
≤
0.4V
V
EN
≤
0.18V
Frequency = 120Hz
V
OUT
= 0V
Note 7
I
OUT
= 50mA, C
OUT
= 2.2µF
Min
–1
–2
40
0.009
0.05
10
115
165
300
80
350
1.8
8
0.05
0.10
75
700
0.05
500
1000
0.05
0.1
0.5
0.7
60
80
175
250
300
400
500
600
130
170
650
900
2.5
3.0
20
25
3
8
Typ
Max
1
2
Units
%
%
ppm/°C
%/V
%/V
%
%
mV
mV
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
mA
mA
mA
mA
µA
µA
dB
mA
%/W
nV/√Hz
March 2007
4
M9999-032307
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