MIC5320
High-Performance Dual 150mA
µCap ULDO™
General Description
The MIC5320 is a tiny Dual Ultra Low-Dropout
(ULDO™) linear regulator ideally suited for portable
electronics. It’s ideal for today’s most demanding
ultra-thin portable applications including mobile
phones, camera modules, imaging sensors for digital
still and video cameras, PDAs, portable media players
(PMP) and PC cameras. The MIC5320 integrates two
high-performance, 150mA ULDOs into a tiny 6-pin
1.6mm x 1.6mm leadless Thin MLF
®
package, which
provides exceptional thermal package characteristics.
The MIC5320 is a µCap design which enables
operation with very small ceramic output capacitors
for stability, thereby reducing required board space
and component cost. The combination of extremely
low-dropout voltage, fast transient response and
exceptional thermal package characteristics makes it
ideal for portable electronics.
The MIC5320 ULDO™ is available in fixed-output
voltages in the tiny 6-pin 1.6mm x 1.6mm leadless
Thin MLF
®
package which is only 2.56mm
2
in area,
less than 30% the area of the SOT-23, TSOP and
MLF
®
3x3 packages. It’s also available in the thin
SOT-23-6 lead package and the standard 6-pin
1.6mm x 1.6mm leadless package. Additional voltage
options are available. For more information, contact
Micrel marketing department.
Data sheets and supporting documentation can be
found on Micrel’s web site at:
www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
•
•
2.3V to 5.5V input voltage range
Ultra-low dropout voltage ULDO™ 35mV @
150mA
Tiny 6-pin 1.6mm x 1.6mm Thin MLF
®
leadless
package
Low-cost TSOT-23-6 package
Independent enable pins
150mA output current per LDO
µCap stable with 1µF ceramic capacitor
Low quiescent current – 85µA per output
Fast turn-on time – 30µs
Thermal-shutdown protection
Current-limit protection
Applications
•
•
•
•
•
•
Mobile phones
PDAs
GPS receivers
Portable electronics
Portable media players
Digital still and video cameras
Typical Application
MIC5320-x.xYMT
VIN
EN 1
1µF
EN 2
GND
1µF
1µF
VOUT 1
VOUT 2
VOUT 1
VOUT 2
Typical Application Circuit
ULDO is a trademark of Micrel, Inc.
MLF and
MicroLeadFrame
are registered trademarks of Amkor Technologies, 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
February 2011
M9999-021111-H
Micrel, Inc.
MIC5320
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) .....................................0V to +6V
Enable Input Voltage (V
EN
)...........................0V to +6V
Power Dissipation………………… Internally Limited
(3)
Lead Temperature (soldering, 3sec) ..................260°C
Storage Temperature (T
S
) ................ –65°C to +150°C
ESD Rating
(4)
.........................................................2kV
Operating Ratings
(2)
Supply Voltage (V
IN
).............................. +2.3V to +5.5V
Enable Input Voltage (V
EN
).............................. 0V to V
IN
Junction Temperature (T
J
) ................. –40°C to +125°C
Junction Thermal Resistance
Thin MLF-6 / MLF-6 (θ
JA
) ........................ 100°C/W
TSOT-6 (θ
JA
) ........................................... 235°C/W
Electrical Characteristics
(5)
V
IN
= EN1 = EN2 = V
OUT
+ 1.0V; higher of the two regulator outputs, I
OUTLDO1
= I
OUTLDO2
= 100µA; C
OUT1
= C
OUT2
= 1µF;
T
J
= 25°C,
bold
values indicate –40°C
≤
T
J
≤
+125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
(6)
Conditions
Variation from nominal V
OUT
Variation from nominal V
OUT
; –40°C to +125°C
V
IN
= V
OUT
+ 1V to 5.5V; I
OUT
= 100µA
I
OUT
= 100µA to 150mA
I
OUT
= 100µA
I
OUT
= 50mA
I
OUT
= 100mA
I
OUT
= 150mA
Ground Current
EN1 = High; EN2 = Low; I
OUT
= 100µA to 150mA
EN1 = Low; EN2 = High; I
OUT
= 100µA to 150mA
EN1 = EN2 = High; I
OUT1
= 150mA, I
OUT2
= 150mA
Ground Current in Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Enable Inputs (EN1 / EN2)
Enable Input Voltage
Enable Input Current
Logic Low
Logic High
V
IL
≤
0.2V
V
IH
≥
1.0V
Turn-on Time (See Timing Diagram)
Turn-on Time (LDO1 and 2)
Notes:
C
OUT
= 1.0µF
30
100
µs
1.1
0.01
0.01
1
1
0.2
V
V
µA
µA
EN1 = EN2 = 0V
f = 1kHz; C
OUT
= 1.0µF
f=20kHz; C
OUT
= 1.0µF
V
OUT
= 0V
C
OUT
= 1.0µF; 10Hz to 100KHz
300
Min
-2.0
-3.0
0.02
0.5
0.1
12
25
35
85
85
150
0.01
65
45
550
90
950
50
75
100
120
120
190
2
Typ
Max
+2.0
+3.0
0.3
0.6
2
Units
%
%
%/V
%/V
%
mV
mV
mV
mV
µA
µA
µA
µA
dB
dB
mA
µV
RMS
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any T
A
(ambient temperature) is P
D(max)
= T
J(max)
– T
A
) /
θ
JA
. Exceeding the maximum allowable
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
5. Specification for packaged product only.
6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal V
OUT
. For outputs below 2.3V,
the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V.
February 2011
5
M9999-021111-H
实时操作系统RTOS
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