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MIC5302
150mA ULDO™ in Ultra Small
1.2mm x 1.6mm Thin MLF
®
General Description
The MIC5302 is an ultra small, Ultra Low Dropout CMOS
regulator, ULDO™ that is ideal for today’s most demand-
ing portable applications including cellular phone RF
power, camera modules, imaging sensors for digital still
and video cameras, PDAs, portable media players (PMP)
and PC cameras where board space is limited. It offers
extremely low dropout voltage, very low output noise and
can operate from a 2.3V to 5.5V input while delivering up
to 150mA.
It offers 2% initial accuracy, low ground current (typically
85µA total), thermal and current limit protection. The
MIC5302 can also be put into a zero-off-mode current
state, drawing no current when disabled.
The MIC5302 is available in the ultra small 4-pin 1.2mm x
1.6mm Thin MLF
®
package, occupying only 1.92mm
2
of
PCB area, a 50% reduction in board area compared to
SC-70 and 2mm x 2mm MLF
®
packages. It’s operating
junction temperature range is –40°C to +125°C and is
available in fixed output voltages in lead-free (RoHS
compliant) Thin MLF
®
package.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
Ultra Small 1.2mm x 1.6mm Thin MLF
®
package
Low Dropout Voltage: 50mV at 150mA
Output noise 120µVrms
Input voltage range: 2.3V to 5.5V
150mA guaranteed output current
Stable with ceramic output capacitors
Low quiescent current 85µA total
35µs turn-on time
High output accuracy
– ±2% initial accuracy
– ±3% over temperature
•
Thermal shutdown and current limit protection
Applications
•
•
•
•
•
•
Mobile Phones
PDAs
GPS Receivers
Portable Media Players
Portable Electronics
Digital Still & Video Cameras
Typical Application
MIC5302-x.xYMT
60
VIN
EN
VOUT
Dropout Voltage
vs. Output Current
50
40
1µF
GND
1µF
30
20
10
V
OUT
= 2.8V
C
OUT
= 1µF
25 50 75 100 125 150
OUTPUT CURRENT (mA)
RF LDO Application
0
0
ULDO is a trademark of Micrel, Inc.
MLF and
MicroLeadFrame
are registered trademarks of Amkor Technology, 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
May 2008
M9999-051508-E
Micrel, Inc.
MIC5302
Block Diagram
VIN
EN
V
REF
Quick-
Start
VOUT
Error
LDO
Amp
Thermal
Shutdown
Current
Limit
GND
MIC5302 Block Diagram
May 2008
2
M9999-051508-E
Micrel, Inc.
MIC5302
Ordering Information
(1)
Part Number
MIC5302-1.3YMT
MIC5302-1.5YMT
MIC5302-1.8YMT
MIC5302-2.1YMT
MIC5302-2.5YMT
MIC5302-2.8YMT
MIC5302-2.85YMT
MIC5302-2.9YMT
MIC5302-3.0YMT
MIC5302-3.3YMT
Note:
1. Other voltages available. Contact Micrel Marketing for details.
Marking Code
H13
H15
H18
H21
H25
H28
H2J
H29
H30
H33
Voltage
1.3V
1.5V
1.8V
2.1V
2.5V
2.8V
2.85V
2.9V
3.0V
3.3V
Temperature Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
4-Pin 1.2mm x 1.6mm Thin MLF
®
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
4-Pin 1.2mm x 1.6mm Thin MLF
®
4-Pin 1.2mm x 1.6mm Thin MLF
®
4-Pin 1.2mm x 1.6mm Thin MLF
®
4-Pin 1.2mm x 1.6mm Thin MLF
®
4-Pin 1.2mm x 1.6mm Thin MLF
4-Pin 1.2mm x 1.6mm Thin MLF
®
®
4-Pin 1.2mm x 1.6mm Thin MLF
®
4-Pin 1.2mm x 1.6mm Thin MLF
®
4-Pin 1.2mm x 1.6mm Thin MLF
®
Pin Configuration
EN
1
4
VOUT
GND
2
3
VIN
4-Pin 1.2mm x 1.6mm Thin MLF
®
(MT)
Pin Description
Pin Number
1
2
3
4
HS Pad
Pin Name
EN
GND
VIN
VOUT
EPAD
Pin Function
Enable Input. Active High. High = on, low = off. Do not leave floating.
Ground
Supply Input
Output Voltage
Exposed heatsink pad connected to ground internally.
May 2008
3
M9999-051508-E
Micrel, Inc.
MIC5302
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ............................................. 0V to +6V
Enable Input (V
EN
) ................................................ 0V to +6V
Power Dissipation
(3)
...................................Internally Limited
Lead Temperature (soldering, 5 sec.)........................ 260°C
Junction Temperature (T
J
) ........................–40°C to +125°C
Storage Temperature (T
s
) .........................–65°C to +150°C
Operating Ratings
(2)
Supply voltage (V
IN
) ..................................... +2.3V to +5.5V
Enable Input (V
EN
) .................................................. 0V to V
IN
Junction Temperature (T
A
) ........................ –40°C to +125°C
Junction Thermal Resistance
Thin MLF
®
-4 (θ
JA
) ...........................................173°C/W
Electrical Characteristics
(4)
V
IN
= V
OUT
+ 1V; C
OUT
= 1.0µF; I
OUT
= 100µA; T
J
= 25°C,
bold
values indicate –40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
(5)
Dropout Voltage
(6)
Condition
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
I
OUT
= 0 to 150mA, EN = High
V
EN
= 0V
f = up to 1kHz; C
OUT
= 1.0µF
f = 1kHz – 20kHz; C
OUT
= 1.0µF
V
OUT
= 0V
C
OUT
=1µF, 10Hz to 100kHz
Logic Low
Logic High
V
IL
< 0.2V
V
IH
> 1.0V
C
OUT
= 1.0µF
Min
–2
–3
0.02
0.5
0.1
15
30
50
85
0.1
65
42
250
400
120
725
Typ
Max
+2
+3
0.3
0.6
2.0
35
100
120
2
Units
%
%
%/V
%
mV
mV
mV
mV
µA
µA
dB
dB
mA
µV
RMS
V
V
µA
µA
µs
Ground Pin Current
Ground Pin Current in
Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Enable Input
Enable Input Voltage
Enable Input Current
Turn-on Time
Notes:
(7)
0.2
1.1
0.01
0.01
35
1
1
100
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. Specification for packaged product only.
5. Regulation is measured at constant junction temperature using low duty cycle pulse testing, changes in output voltage due to heating effects are
covered by the thermal regulation specification.
6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential.
7. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin
current.
May 2008
4
M9999-051508-E
51单片机
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