MIC5388-SGYCS [MICREL]
Dual 200mA Peak LDO in Wafer Level Chip Scale Package;
| 型号： | MIC5388-SGYCS |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | Dual 200mA Peak LDO in Wafer Level Chip Scale Package |
| 文件： | 总12页 (文件大小：582K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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, high-
performance, 200mA peak (150mA continuous) LDOs in a
miniature 6-bump, 0.5mm pitch, 1.5mm × 1.0mm wafer
level chip scale package (WLCSP).
• 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
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.
• 6-bump 1.5mm × 1.0mm WLCSP package
Applications
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
• 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
M9999-071211-A
July 2011
Micrel, Inc.
MIC5388/9
Ordering Information
Junction
Temperature
Range
Voltage
Manufacturing Part Number(1, 2)
Marking Code
Package
V
OUT1/VOUT2
MIC5388-SGYCS*
MIC5388-MMYCS*
MIC5388-MLYCS*
MIC5388-MGYCS
MIC5388-M4YCS*
MIC5388-G4YCS*
MIC5389-SGYCS*
MIC5389-MMYCS*
MIC5389-MLYCS*
MIC5389-MGYCS
MIC5389-M4YCS*
MIC5389-G4YCS*
Notes:
8A8
8B8
8C8
8D8
8E8
8F8
8A9
8B9
8C9
8D9
8E9
8F9
3.3V/1.8V
2.8V/2.8V
2.8V/2.7V
2.8V/1.8V
2.8V/1.2V
1.8V/1.2V
3.3V/2.8V
2.8V/2.8V
2.8V/2.7V
2.8V/1.8V
2.8V/1.2V
1.8V/1.2V
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
–40° to +125°C 6-Bump Wafer Level Chip Scale Package
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
Pin Function
A1
B1
C1
C2
B2
A2
EN1
GND
Enable Regulator 1. Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
Ground.
EN2
Enable Regulator 2. Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
VOUT2
VIN
Regulator Output − LDO2
Voltage Supply Input.
VOUT1
Regulator Output − LDO1
M9999-071211-A
July 2011
2
Micrel, Inc.
MIC5388/9
Functional Block Diagrams
MIC5388 Block Diagram
MIC5389 Block Diagram
M9999-071211-A
July 2011
3
Micrel, Inc.
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
Condition
Min.
–2.0
–3.0
Typ.
Max.
+2.0
+3.0
0.3
Units
Variation from nominal VOUT
Variation from nominal VOUT; –40°C to +125°C
VIN = VOUT +1V to 5.5V, IOUT = 100µA
IOUT = 100µA to 150mA
Output Voltage Accuracy
%
Line Regulation
Load Regulation
0.02
0.3
55
%/V
%
1.2
I
I
OUT = 50mA
110
310
45
Dropout Voltage
mV
OUT = 150mA
175
32
VEN1 = High; VEN2 = Low; IOUT = 0mA
VEN1 = Low; VEN2 = High; IOUT = 0mA
Ground Pin Current
32
45
µA
µA
VEN1 = VEN2 = High; IOUT1 = IOUT2 = 0mA
60
85
Ground Pin Current in
Shutdown
VEN1 = VEN2 = 0V
0.05
1
Ripple Rejection
Current Limit
f = 1kHz; COUT = 1µF
VOUT = 0V
73
dB
mA
200
325
175
550
Output Voltage Noise
COUT = 1µF, 10Hz to 100kHz
µVRMS
Auto-Discharge NFET
Resistance
MIC5389 Only; VEN1 = VEN2 = 0V; VIN = 3.6V
30
Ω
Enable Inputs (EN1/EN2)
Logic Low
Logic High
VIL ≤ 0.2V
0.2
Enable Input Voltage
V
1.2
0.01
0.01
50
1
1
Enable Input Current
µA
µs
VIH ≥ 1.2V
Turn-On Time
COUT = 1µF
125
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.
M9999-071211-A
July 2011
4
Micrel, Inc.
MIC5388/9
Typical Characteristics
Output Voltage
vs. Output Current
Output Voltage
vs. Input Voltage
Power Supply
Rejection Ratio
3.00
2.90
2.80
2.70
2.60
2.50
-100
3
2.5
2
-90
100µA
LDO1 150mA
-80
-70
-60
LDO1 100μA
LDO2 100μA
50mA
-50
-40
-30
-20
-10
0
1.5
1
LDO2 150mA
150mA
VOUT1 = 2.8V
VIN = VEN = VOUT + 1V
OUT1 = 2.8V
IN = COUT = 1µF
VIN = VEN = 4.1V
VOUT1 = 2.80V
V
OUT2 = 1.8V
IN = COUT = 1μF
0.5
0
V
C
C
C
OUT1 = 1µF/10V
2.5
3
3.5
4
4.5
5
5.5
10
100
1000
10000
100000
10
30
50
70
90
110
130
150
FREQUENCY(Hz)
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
Ground Current
vs. Input Voltage
Ground Current
vs. Output Current
Ground Current
vs. Temperature
45
43
41
39
37
35
33
31
29
27
25
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
DUAL OUTPUT 100µA
DUAL OUTPUT
SINGLE OUTPUT 50mA
150mA
100µA
SINGLE OUTPUT
VIN = 3.8V
VIN = VEN = 3.8V
SINGLE OUTPUT 100µA
V
V
C
OUT1 = 2.8V
V
V
C
OUT1 = 2.8V
VIN = VEN2
VOUT2 = 1.8V
IN = COUT = 1μF
OUT2 = 1.8V
OUT2 = 1.8V
IN = COUT = 1µF
IN = COUT = 1μF
C
-40
-20
0
20
40
60
80
100
120
0
15 30 45 60 75 90 105 120 135 150
2.5
3
3.5
4
4.5
5
5.5
TEMPERATURE (°C)
OUTPUT CURRENT (mA)
INPUT VOLTAGE (V)
Dropout Voltage
vs. Output Current
Dropout Voltage
vs. Temperature
Current Limit
vs. Input Voltage
500
240
220
200
180
160
140
120
100
80
CIN = COUT = 1μF
175
150
125
100
75
LDO2
400
300
200
100
0
150mA
100mA
LDO1
50mA
50
VOUT1 = 2.8V
OUT2 = 1.8V
CIN = COUT = 1μF
60
VOUT1 = 2.8V
V
25
40
10mA
CIN = COUT = 1μF
20
0
0
0
20
40
60
80
100 120 140 160
2.5
3
3.5
4
4.5
5
5.5
-40
-20
0
20
40
60
80
100 120
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
M9999-071211-A
July 2011
5
Micrel, Inc.
MIC5388/9
Typical Characteristics (Continued)
Output Noise
Spectral Density
Enable Voltage Threshold
vs. Input Voltage
10
1
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
EN1 ON
0.1
EN1 OFF
VIN = 5.21V
0.01
0.001
VOUT2 = 1.815V(100µA)
VOUT1 = 2.8V
IN = COUT = 1μF
IL = 150mA
CIN = COUT2 = 1µF
C
Noise Output (10Hz100Khz) = 174.54 µVrms
2.5
3
3.5
4
4.5
5
5.5
10
100
1,000
10,000
100,000
INPUT VOLTAGE (V)
FREQUENCY (Hz)
M9999-071211-A
July 2011
6
Micrel, Inc.
MIC5388/9
Functional Characteristics
M9999-071211-A
July 2011
7
Micrel, Inc.
MIC5388/9
Application Information
Enable/Shutdown
MIC5388/9 is a dual 150mA LDO in a miniature 6-bump
WLCSP package. The MIC5389 includes an auto-
discharge 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.
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.
Input 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.
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.
PD = (VIN – VOUT1) IOUT1 + (VIN – VOUT2) I OUT2
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.
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 = (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.
T
− TA
⎛
⎜
⎜
⎝
⎞
⎟
⎟
⎠
J(MAX)
PD(MAX)
=
θJA
TJ(max) = 125°C, and the maximum junction temperature
of the die, θJA, thermal resistance = 108°C/W.
M9999-071211-A
July 2011
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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-to-
ambient thermal resistance for the minimum footprint is
108°C/W.
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:
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:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
0.39W = (125°C – TA)/(108°C/W)
TA = 82.88°C
M9999-071211-A
July 2011
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Micrel, Inc.
MIC5388/9
MIC5388/9 Schematic
Bill of Materials
Item
C1, C2, C3
U1
Part Number
Manufacturer Description
Qty.
3
C1005X5R1A105K
MIC5388/9-XXYCS
TDK(1)
1µF,10V Ceramic Capacitor, X5R, 0402
Dual, 200mA Peak LDO in Wafer Level Chip Scale Package
Micrel, Inc.(2)
1
Notes:
1. TDK: www.tdk.com.
2. Micrel, Inc.: www.micrel.com.
M9999-071211-A
July 2011
10
Micrel, Inc.
MIC5388/9
PCB Layout Recommendations
Top Layer
Bottom Layer
M9999-071211-A
July 2011
11
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.
M9999-071211-A
July 2011
12
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