Micrel MIC5389-MLYCS Dual 200ma peak ldo in wafer level chip scale package Datasheet

MIC5388/9
Dual 200mA Peak LDO
in Wafer Level Chip Scale Package
General Description
Features
The MIC5388/9 is an advanced dual LDO ideal for
powering general purpose portable devices. The
MIC5388/9 provides two independently-controlled, highperformance, 200mA peak (150mA continuous) LDOs in a
miniature 6-bump, 0.5mm pitch, 1.5mm × 1.0mm wafer
level chip scale package (WLCSP).
Ideal for battery-powered applications, the MIC5388/9
offers 2% accuracy, low dropout voltage (175mV @
150mA) and low ground current (typically 32μA per LDO).
The MIC5388/9 can also be put into a zero off mode
current state, drawing virtually no current when disabled.
When the MIC5389 is disabled an internal resistive load is
automatically applied to the output to discharge the output
capacitor. This LDO offers fast transient response and
high PSRR while consuming a minimum operating current.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
•
•
•
•
•
•
•
•
•
•
•
2.5V to 5.5V input voltage range
Two 200mA peak output current LDOs
High output accuracy (±2%)
Low quiescent current (32µA per LDO)
Stable with 1µF ceramic output capacitors
Low dropout voltage (175mV at 150mA)
Independent enable pins
Output discharge circuit (MIC5389)
Thermal-shutdown protection
Current-limit protection
6-bump 1.5mm × 1.0mm WLCSP package
Applications
•
•
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Camera phones
Mobile phones
DSC, GPS, PMP, and PDAs
Portable medical devices
Portable electronics
_________________________________________________________________________________________________________________________
Typical Application
Camera Module Power Supply
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 2011
M9999-071211-A
Micrel, Inc.
MIC5388/9
Ordering Information
Manufacturing Part Number(1, 2)
Marking Code
VOUT1/VOUT2
Junction
Temperature
Range
Package
Voltage
MIC5388-SGYCS*
8A8
3.3V/1.8V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5388-MMYCS*
8B8
2.8V/2.8V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5388-MLYCS*
8C8
2.8V/2.7V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5388-MGYCS
8D8
2.8V/1.8V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5388-M4YCS*
8E8
2.8V/1.2V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5388-G4YCS*
8F8
1.8V/1.2V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5389-SGYCS*
8A9
3.3V/2.8V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5389-MMYCS*
8B9
2.8V/2.8V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5389-MLYCS*
8C9
2.8V/2.7V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5389-MGYCS
8D9
2.8V/1.8V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5389-M4YCS*
8E9
2.8V/1.2V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
MIC5389-G4YCS*
8F9
1.8V/1.2V
–40° to +125°C
6-Bump Wafer Level Chip Scale Package
Notes:
1.
Other voltages available. Contact Micrel Marketing for details.
2.
MIC5389 offers auto-discharge function.
*
Contact Micrel Marketing for availability.
Pin Configuration
Ball A1 Identifier
TOP VIEW
BOTTOM VIEW
6-Bump, 0.5mm Pitch WLCSP (CS)
Pin Description
Pin Number
Pin Name
A1
EN1
Enable Regulator 1. Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
B1
GND
Ground.
C1
EN2
Enable Regulator 2. Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
C2
VOUT2
B2
VIN
A2
VOUT1
July 2011
Pin Function
Regulator Output − LDO2
Voltage Supply Input.
Regulator Output − LDO1
2
M9999-071211-A
Micrel, Inc.
MIC5388/9
Functional Block Diagrams
MIC5388 Block Diagram
MIC5389 Block Diagram
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MIC5388/9
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VIN) ........................................ −0.3V to +6V
Enable Voltage (VEN1, VEN2). .............................. −0.3V to VIN
Power Dissipation (PD) ........................... Internally Limited(3)
Lead Temperature (soldering, 10sec.)....................... 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)..................................... +2.5V to +5.5V
Enable Voltage (VEN1, VEN2) .............................. −0.3V to VIN
Junction Temperature (TA) ........................ –40°C to +125°C
Junction Thermal Resistance
6-Bump, 0.5mm Pitch WLCSP (θJA) ................108°C/W
Electrical Characteristics(5)
VIN = VEN1 = VEN2 = VOUT + 1V; higher of the two regulator outputs; IOUTLDO1 = IOUTLDO2 = 100µA; COUT1 = COUT2 = 1µF; TJ = 25°C, bold
values indicate –40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Condition
Min.
Typ.
Max.
Variation from nominal VOUT
–2.0
+2.0
Variation from nominal VOUT; –40°C to +125°C
–3.0
+3.0
Units
%
Line Regulation
VIN = VOUT +1V to 5.5V, IOUT = 100µA
0.02
0.3
%/V
Load Regulation
IOUT = 100µA to 150mA
0.3
1.2
%
IOUT = 50mA
55
110
IOUT = 150mA
175
310
VEN1 = High; VEN2 = Low; IOUT = 0mA
32
45
VEN1 = Low; VEN2 = High; IOUT = 0mA
32
45
VEN1 = VEN2 = High; IOUT1 = IOUT2 = 0mA
60
85
0.05
1
Dropout Voltage
Ground Pin Current
mV
µA
Ground Pin Current in
Shutdown
VEN1 = VEN2 = 0V
Ripple Rejection
f = 1kHz; COUT = 1µF
Current Limit
VOUT = 0V
Output Voltage Noise
COUT = 1µF, 10Hz to 100kHz
175
µVRMS
Auto-Discharge NFET
Resistance
MIC5389 Only; VEN1 = VEN2 = 0V; VIN = 3.6V
30
Ω
73
200
325
µA
dB
550
mA
Enable Inputs (EN1/EN2)
Enable Input Voltage
Enable Input Current
Turn-On Time
0.2
Logic Low
1.2
Logic High
VIL ≤ 0.2V
0.01
1
VIH ≥ 1.2V
0.01
1
COUT = 1µF
50
125
V
µA
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.
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MIC5388/9
Typical Characteristics
Output Voltage
vs. Input Voltage
Power Supply
Rejection Ratio
-100
OUTPUT VOLTAGE (V)
-60
50mA
-50
150mA
`
-40
-30
V IN = V EN = 4.1V
-20
1.5
10
LDO2 150mA
1
VOUT1 = 2.8V
VOUT2 = 1.8V
0.5
COUT1 = 1µF/10V
0
1000
10000
2.5
100000
3
3.5
FREQUENCY(Hz)
2.80
2.70
Ground Current
vs. Input Voltage
4
4.5
5
2.50
5.5
10
39
150mA
100µA
33
31
VIN = VEN2
27
CIN = COUT = 1μF
VOUT2 = 1.8V
3
4
4.5
5
70
60
50
SINGLE OUTPUT
40
30
VIN = 3.8V
20
VOUT1 = 2.8V
VOUT2 = 1.8V
CIN = COUT = 1μF
0
5.5
15
30
DROPOUT VOLTAGE (mV)
75
50
VOUT1 = 2.8V
25
CIN = COUT = 1μF
20
40
60
80
100
120
OUTPUT CURRENT (mA)
July 2011
60
75
SINGLE OUTPUT 50mA
40
30
140
VIN = V EN = 3.8V
SINGLE OUTPUT 100µA
20
VOUT1 = 2.8V
VOUT2 = 1.8V
10
CIN = COUT = 1µF
0
90
-40
105 120 135 150
-20
0
20
40
160
60
80
100
120
TEMPERATURE (°C)
Current Limit
vs. Input Voltage
200
150mA
180
160
100mA
140
120
100
50mA
80
60
40
LDO2
400
300
LDO1
200
VOUT1 = 2.8V
100
VOUT2 = 1.8V
10mA
CIN = COUT = 1μF
20
0
0
45
50
CIN = COUT = 1μF
220
100
150
500
240
125
130
60
Dropout Voltage
vs. Temperature
Dropout Voltage
vs. Output Current
150
110
DUAL OUTPUT 100µA
70
OUTPUT CURRENT (mA)
INPUT VOLTAGE (V)
175
90
80
0
3.5
70
Ground Current
vs. Temperature
DUAL OUTPUT
10
25
2.5
50
OUTPUT CURRENT (mA)
GROUND CURRENT (μA)
GROUND CURRENT (μA)
41
29
30
Ground Current
vs. Output Current
80
35
VOUT1 = 2.8V
CIN = COUT = 1µF
90
37
VIN = V EN = V OUT + 1V
2.60
INPUT VOLTAGE (V)
43
GROUND CURRENT (μA)
2.90
CIN = COUT = 1μF
0
100
45
LDO2 100μA
2
V OUT1 = 2.80V
-10
LDO1 100μA
CURRENT LIMIT (mA)
PSRR (dB)
-70
LDO1 150mA
2.5
OUTPUT VOLTAGE (V)
100µA
-80
DROPOUT VOLTAGE (mV)
3.00
3
-90
Output Voltage
vs. Output Current
0
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
5
100
120
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
M9999-071211-A
Micrel, Inc.
MIC5388/9
Typical Characteristics (Continued)
Output Noise
Spectral Density
Enable Voltage Threshold
vs. Input Voltage
1.2
10
1
0.9
1
EN1 ON
NOISE (µV/√Hz)
ENABLE VOLTAGE (V)
1.1
0.8
0.7
0.6
EN1 OFF
0.5
0.4
V OUT1 = 2.8V
0.3
0.1
VIN = 5.21V
0.01
0.2
0.1
2.5
3
3.5
4
4.5
INPUT VOLTAGE (V)
July 2011
5
VOUT2 = 1.815V(100µA)
CIN = COUT2 = 1µF
Noise Output (10Hz100Khz) = 174.54 µVrms
CIN = COUT = 1μF
IL = 150mA
5.5
0.001
10
100
1,000
10,000
100,000
FREQUENCY (Hz)
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MIC5388/9
Functional Characteristics
July 2011
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Micrel, Inc.
MIC5388/9
Application Information
Enable/Shutdown
The MIC5388/9 comes with two active high enable pins
that allow each regulator to be disabled 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.
When disabled the MIC5389 switches a 30Ω (typical)
load on the regulator output to discharge the external
capacitor.
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.
MIC5388/9 is a dual 150mA LDO in a miniature 6-bump
WLCSP package. The MIC5389 includes an autodischarge circuit for each of the LDO outputs that are
activated when the output is disabled. The MIC5388/9
regulator is fully protected from damage due to fault
conditions through linear current limiting and thermal
shutdown.
Input Capacitor
The MIC5388/9 is a high-performance, high-bandwidth
device. An input capacitor of 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 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.
Thermal Considerations
The MIC5388/9 is designed to provide 150mA of
continuous current for both outputs 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 2.8V for VOUT1, 1.8V
for VOUT2 and the output current = 150mA. The actual
power dissipation of the regulator circuit can be
determined using the equation:
Output Capacitor
The MIC5388/9 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. 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.
PD = (VIN – VOUT1) IOUT1 + (VIN – VOUT2) I
VIN IGND
OUT2
+
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 – 2.8V) × 150mA + (3.6V - 1.8) ×
150mA
PD = 0.39W
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:
No-Load Stability
Unlike many other voltage regulators, the MIC5388/9 will
remain stable and in regulation with no load. This is
especially important in CMOS RAM keep-alive
applications.
⎛ TJ(MAX) − TA
PD(MAX) = ⎜⎜
θ JA
⎝
⎞
⎟
⎟
⎠
TJ(max) = 125°C, and the maximum junction temperature
of the die, θJA, thermal resistance = 108°C/W.
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Micrel, Inc.
MIC5388/9
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit. The junction-toambient thermal resistance for the minimum footprint is
108°C/W.
The maximum power dissipation must not be exceeded
for proper operation.
For example, when operating the MIC5388-MGYCS at
an input voltage of 3.6V and 150mA loads at each output
with a minimum footprint layout, the maximum ambient
operating temperature TA can be determined as follows:
Therefore, a 2.8V/1.8V application with 150mA at each
output current can accept an ambient operating
temperature of 82.88°C in a miniature 6-bump 0.5mm
pitch 1.5mm × 1.0mm WLCSP 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
0.39W = (125°C – TA)/(108°C/W)
TA = 82.88°C
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MIC5388/9
MIC5388/9 Schematic
Bill of Materials
Item
Part Number
C1, C2, C3
C1005X5R1A105K
U1
MIC5388/9-XXYCS
Manufacturer
TDK(1)
Micrel, Inc.
(2)
Description
Qty.
1µF,10V Ceramic Capacitor, X5R, 0402
3
Dual, 200mA Peak LDO in Wafer Level Chip Scale Package
1
Notes:
1. TDK: www.tdk.com.
2. Micrel, Inc.: www.micrel.com.
July 2011
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Micrel, Inc.
MIC5388/9
PCB Layout Recommendations
Top Layer
Bottom Layer
July 2011
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Micrel, Inc.
MIC5388/9
Package Information
6-Bump, 0.5mm Pitch 1.5mm × 1.0mm Wafer Level Chip-Scale Package (CS)
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
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right.
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.
© 2011 Micrel, Incorporated.
July 2011
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