MIC5335
Dual, High Performance 300mA µCap
ULDO
TM
General Description
The MIC5335 is a high current density, dual Ultra Low
Dropout (ULDO
™
) linear regulator. The MIC5335 is
ideally suited for portable electronics which demand
overall high performance in a very small form factor.
The MIC5335 is offered in the ultra small 1.6mm x
®
1.6mm 6-ld Thin MLF package which is only
2.56mm
2
in area of the SOT-23, TSOP and the 3mm x
®
3mm MLF
package. The MIC5335 delivers
exceptional thermal performances for those
applications that demand higher power dissipation
requirements in a very small foot print. In addition, the
MIC5335 integrates two high performance 300mA
LDOs with independent enable functions and offers
high PSRR eliminating the need for a bypass
capacitor.
The MIC5335 is a µCap design which enables
operation with very small output capacitors for
stability, thereby reducing required board space and
component cost.
The MIC5335 is available in fixed-output voltages.
Additional voltages are available. For more
information, contact Micrel’s Marketing department.
Data sheets and support 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: 75mV at 300mA
Ultra Thin 1.6mm x 1.6mm 6 lead MLF
®
package
Independent enable pins
High PSRR - >65dB
300mA output current per LDO
µCap Stable with 1µF ceramic capacitor
Low quiescent current: 90µA/LDO
Fast turn-on time: 30µs
Thermal Shutdown Protection
Current Limit Protection
Applications
•
Mobile Phones
•
PDAs
•
GPS Receivers
Typical Application
MicroLead
Frame and MLF are registered trademarks of Amkor Technologies. ULDO is a trademark 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
January 2007
M9999-010407
(408) 955-1690
Micrel, Inc.
MIC5335
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 ......................... -40°C to +125°C
Junction Thermal Resistance
Thin MLF
®
-6 (θ
JA
) ................................... 100°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 (Note
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 300mA
I
OUT
= 100µA
I
OUT
= 100mA
I
OUT
= 150mA
I
OUT
= 300mA
Ground Current
EN1 = High; EN2 = Low; I
OUT
= 100µA to 300mA
EN1 = Low; EN2 = High; I
OUT
= 100µA to 300mA
EN1 = EN2 = High; I
OUT1
= 300mA, I
OUT2
= 300mA
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:
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.
Min
-2.0
-3.0
Typ
Max
+2.0
+3.0
Units
%
%
%/V
%/V
%
mV
mV
mV
mV
µA
µA
µA
µA
dB
0.02
0.3
0.1
25
35
75
90
90
150
0.01
65
350
550
90
0.3
0.6
2.0
75
100
200
120
120
190
2
EN1 = EN2 = 0V
f = 1kHz; C
OUT
= 1.0µF
V
OUT
= 0V
C
OUT
= 1.0µF; 10Hz to 10MHz
950
mA
µV
RMS
0.2
1.1
0.01
0.01
1
1
V
V
µA
µA
C
OUT
= 1.0µF
30
100
µs
January 2007
5
M9999-010407
(408) 944-0800
Embedded System
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