Micrel MIC5335-2.8/2.8YMT Dual, high performance 300ma î¼cap uldoâ ¢ Datasheet

MIC5335
Dual, High Performance
300mA µCap ULDO™
General Description
Features
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 x 0.55mm 6-ld Thin MLF package, which is
2
only 2.56mm in area. The MIC5335 delivers
exceptional
thermal
performance
for
those
applications that demand higher power dissipation 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.
• 2.3V to 5.5V input voltage range
• Ultra-low dropout voltage: 75mV at 300mA
• Ultra Small 1.6mm x 1.6mm x 0.55mm 6 lead MLF®
package
• Independent enable pins
• High PSRR > 65dB @ 1kHz
• 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
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.
Applications
•
•
•
•
•
•
Mobile Phones
PDAs
GPS Receivers
Portable electronics
Portable media players
Digital still and video cameras
Typical Application
ULDO is a trademark of Micrel, Inc.
MLF and MicroLead Frame are registered trademarks of Amkor Technologies.
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
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MIC5335
MIC5335 Block Diagram
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MIC5335
Ordering Information
Part number
Manufacturing
Part Number
MIC5335-1.8/1.5YMT
Marking
Voltage*
Junction
Temp. Range
Package
MIC5335-GFYMT
GPF
1.8V/1.5V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-1.8/1.6YMT
MIC5335-GWYMT
GPW
1.8V/1.6V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-1.8/1.8YMT
MIC5335-GGYMT
GPG
1.8V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.5/1.8YMT
MIC5335-JGYMT
JPG
2.5V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.5/2.5YMT
MIC5335-JJYMT
JPJ
2.5V/2.5V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.6/1.85YMT
MIC5335-KDYMT
KPD
2.6V/1.85
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.6/1.8YMT
MIC5335-KGYMT
KPG
2.6V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.7/2.7YMT
MIC5335-LLYMT
LPL
2.7V/2.7V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.8/1.5YMT
MIC5335-MFYMT
MPF
2.8V/1.5V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.8/1.8YMT
MIC5335-MGYMT
MPG
2.8V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.8/2.6YMT
MIC5335-MKYMT
MPK
2.8V/2.6V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.8/2.8YMT
MIC5335-MMYMT
MPM
2.8V/2.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.85/1.85YMT
MIC5335-NDYMT
NPD
2.85V/1.85V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.85/2.6YMT
MIC5335-NKYMT
NPK
2.85V/2.6V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.85/2.85YMT
MIC5335-NNYMT
NPN
2.85V/2.85V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.9/1.5YMT
MIC5335-OFYMT
OPF
2.9V/1.5V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.9/1.8YMT
MIC5335-OGYMT
OPG
2.9V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-2.9/2.9YMT
MIC5335-OOYMT
OPO
2.9V/2.9V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.0/1.8YMT
MIC5335-PGYMT
PPG
3.0V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.0/2.5YMT
MIC5335-PJYMT
PPJ
3.0V/2.5V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.0/2.6YMT
MIC5335-PKYMT
PPK
3.0V/2.6V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.0/2.8YMT
MIC5335-PMYMT
PPM
3.0V/2.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.0/2.85YMT
MIC5335-PNYMT
PPN
3.0V/2.85V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.0/3.0YMT
MIC5335-PPYMT
PPP
3.0V/3.0V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/1.5YMT
MIC5335-SFYMT
SPF
3.3V/1.5V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/1.8YMT
MIC5335-SGYMT
SPG
3.3V/1.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/2.5YMT
MIC5335-SJYMT
SPJ
3.3V/2.5V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/2.6YMT
MIC5335-SKYMT
SPK
3.3V/2.6V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/2.7YMT
MIC5335-SLYMT
SPL
3.3V/2.7V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/2.8YMT
MIC5335-SMYMT
SPM
3.3V/2.8V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/2.85YMT
MIC5335-SNYMT
SPN
3.3V/2.85V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/2.9YMT
MIC5335-SOYMT
SPO
3.3V/2.9V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/3.0YMT
MIC5335-SPYMT
SPP
3.3V/3.0V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/3.2YMT
MIC5335-SRYMT
SPR
3.3V/3.2V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
MIC5335-3.3/3.3YMT
MIC5335-SSYMT
SPS
3.3V/3.3V
–40°C to +125°C
6-Pin 1.6x1.6 Thin MLF®
Note:
*
For other voltages available. Contact Micrel Marketing for details.
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MIC5335
Pin Configuration
VIN
1
6
VOUT1
GND
2
5
VOUT2
EN2
3
4
EN1
6-pin 1.6mm × 1.6mm Thin MLF
Top View
®
Pin Description
Pin Number
Thin MLF-6
Pin Name
Pin Function
1
VIN
Supply Input.
2
GND
Ground
3
EN2
Enable Input (regulator 2). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating.
4
EN1
Enable Input (regulator 1). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating.
5
VOUT2
Regulator Output – LDO2
6
VOUT1
Regulator Output – LDO1
HS Pad
EPAD
May 2008
Exposed heatsink pad connected to ground internally.
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MIC5335
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VIN) .....................................0V to +6V
Enable Input Voltage (VEN)...........................0V to +6V
Power Dissipation...........................Internally Limited(3)
Lead Temperature (soldering, 3sec ...................260°C
Storage Temperature (TS) ................. -65°C to +150°C
ESD Rating(4) .........................................................2kV
Supply voltage (VIN)............................... +2.3V to +5.5V
Enable Input Voltage (VEN).............................. 0V to VIN
Junction Temperature ......................... -40°C to +125°C
Junction Thermal Resistance
Thin MLF®-6 (θJA) ................................... 100°C/W
Electrical Characteristics(5)
VIN = EN1 = EN2 = VOUT + 1.0V; higher of the two regulator outputs, IOUTLDO1 = IOUTLDO2 = 100µA; COUT1 = COUT2 = 1µF;
TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Output Voltage Accuracy
Conditions
Min
Typ
Max
Units
Variation from nominal VOUT
-2.0
+2.0
%
Variation from nominal VOUT; –40°C to +125°C
-3.0
+3.0
%
0.02
0.3
0.6
%/V
%/V
2.0
Line Regulation
VIN = VOUT + 1V to 5.5V; IOUT = 100µA
Load Regulation
IOUT = 100µA to 300mA
0.3
Dropout Voltage (Note 6)
IOUT = 100µA
0.1
IOUT = 100mA
25
75
mV
IOUT = 150mA
35
100
mV
IOUT = 300mA
75
200
mV
%
mV
EN1 = High; EN2 = Low; IOUT = 100µA to 300mA
90
125
µA
EN1 = Low; EN2 = High; IOUT = 100µA to 300mA
90
125
µA
EN1 = EN2 = High; IOUT1 = 300mA, IOUT2 = 300mA
150
220
µA
Ground Current in Shutdown
EN1 = EN2 = 0V
0.01
2
µA
Ripple Rejection
f = 1kHz; COUT = 1.0µF
65
f = 20kHz; COUT = 1.0µF
45
Ground Current
Current Limit
VOUT = 0V
Output Voltage Noise
COUT = 1.0µF; 10Hz to 100kHz
340
550
dB
950
90
mA
µVRMS
Enable Inputs (EN1 / EN2)
Enable Input Voltage
Logic Low
0.2
Logic High
Enable Input Current
V
V
1.1
VIL ≤ 0.2V
0.01
1
µA
VIH ≥ 1.0V
0.01
1
µA
30
100
µs
Turn-on Time (See Timing Diagram)
Turn-on Time (LDO1 and 2)
COUT = 1.0µF
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 TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. 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 VOUT. For outputs below
2.3V, the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V.
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MIC5335
Typical Characteristics
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MIC5335
Functional Characteristics
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Thermal Considerations
The MIC5335 is designed to provide 300mA of
continuous current for both outputs in a very small
package. Maximum ambient operating temperature
can be calculated based upon the output current and
the voltage drop across the part. Given that the input
voltage is 3.3V, the output voltage is 2.8V for VOUT1,
2.5V for VOUT2 and the output current = 300mA. The
actual power dissipation of the regulator circuit can be
determined using the equation:
PD = (VIN – VOUT1) IOUT1 + (VIN – VOUT2) IOUT2+ VIN IGND
Because this device is CMOS and the ground current
is typically <100µA over the load range, the power
dissipation contributed by the ground current is < 1%
and can be ignored for this calculation.
PD = (3.3V – 2.8V) × 300mA + (3.3V – 2.5V) × 300mA
PD = 0.39W
To determine the maximum ambient operating
temperature of the package, use the junction-toambient thermal resistance of the device and the
following basic equation:
Applications Information
Enable/Shutdown
The MIC5335 comes with dual active-high enable pins
that allow each regulator to be enabled independently.
Forcing the enable pin low disables the regulator and
sends it into a “zero” off-mode-current state. In this
state, current consumed by the regulator goes nearly
to zero. Forcing the enable pin high enables the
output voltage. The active-high enable pin uses
CMOS technology and the enable pin cannot be left
floating; a floating enable pin may cause an
indeterminate state on the output.
Input Capacitor
The MIC5335 is a high-performance, high bandwidth
device. Therefore, it requires a well-bypassed input
supply for optimal performance. A 1µF capacitor is
required from the input-to-ground to provide stability.
Low-ESR ceramic capacitors provide optimal
performance at a minimum of space. Additional highfrequency capacitors, such as small-valued NPO
dielectric-type capacitors, help filter out highfrequency noise and are good practice in any RFbased circuit.
⎛ TJ(max) − TA
PD(max) = ⎜
⎜
θ JA
⎝
Output Capacitor
The MIC5335 requires an output capacitor of 1µF or
greater to maintain stability. The design is optimized
for use with low-ESR ceramic chip capacitors. High
ESR capacitors may cause high frequency oscillation.
The output capacitor can be increased, but
performance has been optimized for a 1µF ceramic
output capacitor and does not improve significantly
with larger capacitance.
X7R/X5R dielectric-type ceramic capacitors are
recommended because of their temperature
performance.
X7R-type
capacitors
change
capacitance by 15% over their operating temperature
range and are the most stable type of ceramic
capacitors on the market. Z5U and Y5V dielectric
capacitors change value by as much as 50% and
60%, respectively, over their operating temperature
ranges. To use a ceramic chip capacitor with Y5V
dielectric, the value must be much higher than an X7R
ceramic capacitor to ensure the same minimum
capacitance
over
the
equivalent
operating
temperature range.
TJ(max) = 125°C, the maximum junction temperature of
the die θJA thermal resistance = 100°C/W.
The table that follows shows junction-to-ambient
thermal resistance for the MIC5335 in the Thin MLF®
package.
Package
6-Pin 1.6 X1.6
Thin MLF™
θJA
Recommended
Minimum
Footprint
θJC
100°C/W
2°C/W
Thermal Resistance
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum
operating conditions for the regulator circuit. The
junction-to-ambient thermal resistance for the
minimum footprint is 100°C/W.
The maximum power dissipation must not be
exceeded for proper operation.
For example, when operating the MIC5335-MFYML at
an input voltage of 3.3V and 300mA loads on each
output with a minimum footprint layout, the maximum
ambient operating temperature TA can be determined
as follows:
0.39W = (125°C – TA)/(100°C/W)
No-Load Stability
Unlike many other voltage regulators, the MIC5335
will remain stable and in regulation with no load. This
is especially important in CMOS RAM keep-alive
applications.
May 2008
⎞
⎟
⎟
⎠
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MIC5335
TA=86°C
Therefore, a 2.8V/2.5V application with 300mA at
each output current can accept an ambient operating
temperature of 86°C in a 1.6mm x 1.6mm Thin MLF®
package. For a full discussion of heat sinking and
May 2008
thermal effects on voltage regulators, refer to the
“Regulator Thermals” subsection of Micrel’s Designing
with Low-Dropout Voltage Regulators handbook. This
information can be found on Micrel's website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
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MIC5335
Package Information
6-Pin 1.6mm x 1.6mm Thin MLF® (MT)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for
its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a
product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for
surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant
injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk
and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale.
© 2006 Micrel, Inc.
May 2008
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