MIC5304 DATA SHEET (11/05/2015) DOWNLOAD

MIC5304
Single 150mA Low Operating Current
LDO with Dual Voltage Pin Select
General Description
Features
The MIC5304 is a low quiescent current, low dropout
• 150mA output current
regulator with selectable output voltage designed for
• Logic controlled selectable output voltage
applications that require two levels of output voltage
• Fast transition time between selected output voltages
regulation. The MIC5304 is an ideal solution for
• Input voltage range: 2.3V to 5.5V
programming memory cards as well as for conserving
• Low 24µA operating current
power in portable applications. The MIC5304 is capable of
sourcing 150mA of output current while only consuming
• Stable with 1μF ceramic capacitors
24µA of operating current. This high performance LDO
• Low dropout voltage of 85mV @ 150mA
offers fast transient response while still maintaining low
• Thermal shutdown and current limit protection
quiescent current levels.
• Tiny 6-pin 1.6mm x 1.6mm Thin MLF® package
The MIC5304 is an ideal solution for battery operated
applications due to ultra low operating current and
extremely low dropout voltage of 85mV at 150mA.
Applications
Equipped with a TTL logic compatible enable pin, the
• Mobile phones, PDAs, PMPs, PNDs
MIC5304 can be put into a zero-off mode current state,
drawing virtually no current when disabled.
• Digital still and video cameras
Board space and component cost is minimized because
• Dual voltage levels for power saving mode
the MIC5304 operates with very small 1μF ceramic
• Portable electronics
capacitors. The MIC5304 provides fixed output voltages,
®
and is available in the tiny 1.6mm x 1.6mm Thin MLF
package ideal for portable electronics.
MIC5304 also features thermal shutdown and current limit
protection.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
MIC5304-RGYMT
1µF
VIN
1µF
VEN
VSEL
3.2V/1.8V
VOUT
GND
Selectable Output Voltage LDO Application
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
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MIC5304
Ordering Information
Part Number
Marking(1)
Voltage(2)
Voltage
(2)
VSEL=High
VSEL=Low
Temperature
Range
(3)
Package
MIC5304-RGYMT
RQZ
3.2V
1.8V
–40° to +125°C
6-Pin 1.6mm x1.6mm Thin MLF®
MIC5304-XDYMT
XQD
3.15V
1.85V
–40° to +125°C
6-Pin 1.6mm x1.6mm Thin MLF®
MIC5304-XGHYMT
XGH
3.15V
1.875V
–40° to +125°C
6-Pin 1.6mm x1.6mm Thin MLF®
Note:
1.
Pin 1 identifier = ▲
2.
For other voltage options contact Micrel Marketing for details.
3.
MLF is GREEN RoHs compliant package. Lead finish is NiPdAu, Hold compound is Hydrogen Free.
Pin Configuration
VIN 1
6
VOUT
GND 2
5
NC
VSEL 3
4
EN
6-Pin 1.6mm x 1.6mm Thin MLF® (MT)
Pin Description
Pin Number
Pin Name
Pin Function
1
VIN
Supply Input.
2
GND
Ground.
3
VSEL
Voltage Select Input. Logic high = higher output voltage; Logic low = lower
output voltage. Do not leave floating.
4
EN
Enable Input: Active High Input. Logic High = On; Logic Low = Off. Do not leave
floating.
5
NC
Not internally connected.
6
VOUT
Output Voltage.
HS Pad
E PAD
Exposed heatsink pad connected to ground internally.
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MIC5304
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VIN) ........................................ –0.3V to +6V
Enable/Select Voltage (VEN/VSEL)...................... –0.3V to VIN
Power Dissipation (PD) ........................... Internally Limited(3)
Lead Temperature (soldering, 5sec.)......................... 260°C
Junction Temperature(TJ) .........................–40°C to +125°C
Storage Temperature (Ts) .........................–65°C to +150°C
ESD Rating(4) .................................................................. 2kV
Supply Voltage (VIN)....................................... +2.3V to 5.5V
Enable/Select Voltage (VEN/VSEL)........................... 0V to VIN
Junction Temperature (TJ) ........................ –40°C to +125°C
Junction Thermal Resistance
1.6mmx1.6mm Thin MLF-6 (θJA) .......................92°C/W
Electrical Characteristics(5)
VIN = VEN = VOUT + 1V; CIN = COUT = 1µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless noted.
Parameter
Condition
Output Voltage Accuracy
Variation from nominal VOUT
–1.5
+1.5
%
Variation from nominal VOUT
–2.0
+2.0
%
%/V
Line Regulation
Min
Typ
Max
Units
VIN = VOUT +1V to 5.5V, IOUT = 100µA
0.01
0.3
Load Regulation
IOUT = 100µA to 150mA
0.05
1
Dropout Voltage(7)
IOUT = 50mA
25
mV
IOUT = 100mA
55
mV
(6)
%
IOUT = 150mA
85
150
mV
Ground Pin Current(8)
IOUT = 100µA to 150mA
24
35
µA
Ground Pin Current in Shutdown
VEN = 0V
0.01
1
µA
Ripple Rejection
f = 1kHz; COUT = 1µF; IOUT = 150mA
65
dB
f = 20kHz; COUT = 1µF; IOUT = 150mA
50
dB
Current Limit
VOUT = 0V
Output Voltage Noise
COUT = 1µF, 10Hz to 100kHz
275
475
750
90
mA
µVRMS
Enable/Select Input
Enable/Select Input Voltage
Logic Low
0.2
Logic High
Enable/Select Input Current
V
V
1.2
VIL ≤ 0.2V
0.01
1
µA
VIH ≥ 1.2V
0.01
1
µA
Turn-on Time
COUT = 1µF; IOUT = 150mA
150
500
µs
Transition Time
VEN = High; VSEL = Transition from 0V to 1.2V; VOUT
change from 1.8V to (3.2V-10%)
35
100
µs
VEN = High; VSEL = Transition from 1.2V to 0V; VOUT
change from 3.2V to (1.8V+10%)
45
100
µs
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, 1.5kΩ in series with 100pF.
5. Specification for packaged product only.
6. 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.
7. 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.
8. 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.
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Typical Characteristics
Power Supply
Rejection Ratio (VSEL=High)
-80
50mA
-70
Power Supply
Rejection Ratio (V SEL=Low)
-80
-70
100mA
-60
-60
-50
-50
150mA
-40
-40
-30
-30
-20
VIN = VOUT +1V
VOUT = 3.15V
COUT = 1µF
-10
0
0.1
2.0
1.8
1
10
100 1K
FREQUENCY (kHz)
50mA
10K
Output Voltage vs.
Input Voltage (VSEL =Low)
Output Voltage vs.
Input Voltage (VSEL =High)
3.5
3.0
100µA
2.5
150mA
2.0
100mA
150mA
1.5
1.0
-20
-10
0
0.1
VIN = VOUT +1V
VOUT = 1.85V
COUT = 1µF
1
10
100
1K
FREQUENCY (kHz)
10K
Output Voltage vs.
Temperature (V SEL=High)
3.4
1.6 100µA
0.5
VOUT = 3.15V
COUT = 1µF
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
2.0
Output Voltage vs.
Temperature (V SEL=Low)
1.9
1.4
1.2
150mA
3.2
1.8
1.0
0.8
3.0
0.6
0.4
0.2
VOUT = 1.85V
COUT = 1µF
VIN = VOUT + 1V
vOUT = 3.15V
CIN = COUT = 1µF
IOUT = 100µA
VIN = VOUT +1V
VOUT = 1.85V
CIN = COUT = 1µF
IOUT = 100µA
1.7
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
2.8
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
1.6
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Output Voltage vs.
Output Current (V SEL =High)
Output Voltage vs.
Output Current (V SEL =Low)
Ground Current
vs. Input Voltage
3.4
2.2
3.2
2.0
3.0
1.8
30
28
26
100µA
24
2.8
2.6
0
28
VIN = VSEL = VEN = VOUT +1V
VOUT = 3.15V
CIN = COUT = 1µF
25 50 75 100 125 150
OUTPUT CURRENT (mA)
Ground Current
vs. Output Current
1.6
1.4
0
550
VIN = VEN = VOUT +1V
VSEL = 0V
VOUT = 1.85V
CIN = COUT = 1µF
25 50 75 100 125 150
OUTPUT CURRENT (mA)
Current Limit vs.
Input Voltage (VSEL =High)
22
20
3.5
550
26
525
525
24
500
500
22
20
0
VEN = VIN = VOUT + 1V
VOUT = 3.15V
CIN = COUT = 1µF
25 50 75 100 125 150
OUTPUT CURRENT (mA)
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4
4.5
5
INPUT VOLTAGE (V)
5.5
Current Limit vs.
Input Voltage (VSEL=Low)
475
475
450
3.5
150mA
VIN = VEN
VOUT = 3.15V
CIN = COUT = 1µF
VOUT = 3.15V
CIN = COUT = 1µF
4
4.5
5
INPUT VOLTAGE (V)
4
5.5
450
2.5
VOUT = 1.85V
CIN = COUT = 1µF
3
3.5
4
4.5
5
INPUT VOLTAGE (V)
5.5
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MIC5304
Typical Characteristics (continued)
120
Dropout Voltage vs.
Temperature (V SEL=High)
100
Dropout Voltage vs.
Output Current (V SEL =High)
100
80
80
60
60
40
20
40
VEN = VSEL = 1.2V
VOUT = 3.15V
CIN = COUT = 1µF
ILOAD = 150mA
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
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0
25
VEN = VSEL = 1.2V
VOUT = 3.15V
CIN = COUT = 1µF
50
75
100 125 150
OUTPUT CURRENT (mA)
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MIC5304
Functional Characteristics
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Functional Characteristics (continued)
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MIC5304
Functional Diagram
VIN
VOUT
LDO
EN
RESISTOR
DIVIDER
NETWORK
REFERENCE
VSEL
GND
MIC5304 Block Diagram
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MIC5304
between two voltages. A logic high signal sets the output to
the higher voltage; while a logic low signal selects the lower
output voltage. The voltage select pin cannot be left floating;
a floating pin may cause an indeterminate state on the
output.
Application Information
The MIC5304 is a low quiescent current voltage selectable
LDO. The regulator is capable of sourcing 150mA of output
current with a low quiescent current of 24µA. A logic input
signal selects the output between two preset voltages. The
MIC5304 regulator is fully protected from damage due to
fault conditions, offering linear current limiting and thermal
shutdown.
Thermal Considerations
The MIC5304 is designed to provide 150mA of continuous
current in a very small package. Maximum ambient
operating temperature can be calculated based on the
output current and the voltage drop across the part. For
example if the input voltage is 3.6V, the output voltage is
3.15V with VSEL set high and 1.85V with VSEL low, and the
output current = 150mA. The lower output voltage should be
used for power dissipation calculations as this is the worst
case situation. The actual power dissipation of the regulator
circuit can be determined using the equation:
PD = (VIN – VOUT) IOUT + 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 = (3.6V –1.85V) × 150mA
PD = 0.2625W
To determine the maximum ambient operating temperature
of the package, use the junction-to-ambient thermal
resistance of the device and the following basic equation:
Input Capacitor
The MIC5304 is a high-performance, high bandwidth device.
Therefore, it requires a well bypassed input supply for
optimal performance. An input capacitor of 1µF is required
from the input to ground to provide stability. Low-ESR
ceramic capacitors provide optimal performance at a
minimum of space. Additional high-frequency capacitors,
such as small-valued NPO dielectric-type capacitors, help
filter out high-frequency noise and are good practice in any
RF-based circuit. X5R or X7R dielectrics are recommended
for the input capacitor. Y5V dielectrics lose most of their
capacitance over temperature and are therefore, not
recommended.
Output Capacitor
The MIC5304 requires an output capacitor of 1µF or greater
to maintain stability. The design is optimized for use with lowESR 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. 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) − TA
PD(MAX) = ⎜⎜
θ JA
⎝
TJ(max) = 125°C, and the maximum junction temperature of
the die, θJA, thermal resistance = 92°C/W.
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 92°C/W.
The maximum power dissipation must not be exceeded for
proper operation.
For example, when operating the MIC5304-XDYMT at an
input voltage of 3.6V and 150mA load with a minimum
footprint layout, the maximum ambient operating
temperature TA can be determined as follows:
0.2625W = (125°C – TA)/(92°C/W)
TA = 100°C
Therefore, a 3.15/1.85V application with a 150mA output
current can accept an ambient operating temperature of
100°C in a 1.6mm x 1.6mm MLF® package. For a full
discussion of heat sinking and thermal effects on voltage
regulators, refer to the “Regulator Thermals” section 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
Enable/Shutdown
The MIC5304 is provided with an active-high enable pin that
allows the regulator to be enabled. Forcing the enable pin
low disables the regulator and sends it into a “zero” offmode-current state. In this state, current consumed by the
regulator goes nearly to zero. 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.
Voltage Select
The voltage select pin is used to select the output voltage
November 2008
⎞
⎟
⎟
⎠
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MIC5304
U1
MIC5304-xxYMT
VIN
J1
VIN
1
IN
VOUT
VOUT
6
C2
1µF/6.3V
J2
GND
J3
VSEL
J4
VOUT
C1
1µF/6.3V
2
GND
NC
5
3
VSEL
EN
4
J5
GND
J6
EN
Bill of Materials
Item
Part Number
Manufacturer
Description
Qty.
C1, C2
C1608X5R1A105K
TDK(1)
Capacitor, 1µF, 6.3V, X5R, Size 0603
2
150mA LDO with Selectable Output Voltage
1
U1
MIC5304-xxYMT
Micrel, Inc.
(2)
Notes:
1. TDK : www.tdk.com
2. Micrel, Inc.: www.micrel.com
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MIC5304
PCB Layout Recommendations
Top Layer
Bottom Layer
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MIC5304
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.
© 2008 Micrel, Incorporated.
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