MIC5388/9
Dual 200mA Peak LDO
in Wafer Level Chip Scale Package
General Description
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).
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.
Features
•
•
•
•
•
•
•
•
•
•
•
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
•
•
•
•
•
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
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:
1.
2.
*
Other voltages available. Contact Micrel Marketing for details.
MIC5389 offers auto-discharge function.
Contact Micrel Marketing for availability.
(1, 2)
Marking Code
8A8
8B8
8C8
8D8
8E8
8F8
8A9
8B9
8C9
8D9
8E9
8F9
Voltage
V
OUT1
/V
OUT2
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
Junction
Temperature
Range
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
6-Bump Wafer Level Chip Scale Package
Pin Configuration
Ball A1 Identifier
TOP VIEW
6-Bump, 0.5mm Pitch WLCSP (CS)
BOTTOM VIEW
Pin Description
Pin Number
A1
B1
C1
C2
B2
A2
Pin Name
EN1
GND
EN2
VOUT2
VIN
VOUT1
Pin Function
Enable Regulator 1. Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
Ground.
Enable Regulator 2. Active High Input. Logic High = On; Logic Low = Off. Do not leave floating.
Regulator Output
−
LDO2
Voltage Supply Input.
Regulator Output
−
LDO1
July 2011
2
M9999-071211-A
Micrel, Inc.
MIC5388/9
Functional Block Diagrams
MIC5388 Block Diagram
MIC5389 Block Diagram
July 2011
3
M9999-071211-A
Micrel, Inc.
MIC5388/9
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ........................................
−0.3V
to
+6V
Enable Voltage (V
EN1,
V
EN2
). ..............................
−0.3V
to V
IN
Power Dissipation (P
D
) ........................... Internally Limited
(3)
Lead Temperature (soldering, 10sec.)....................... 260°C
Junction Temperature (T
J
) ........................–40°C to +125°C
Storage Temperature (T
S
).........................–65°C to +150°C
ESD Rating
(4)
.................................................................. 2kV
Operating Ratings
(2)
Supply Voltage (V
IN
).....................................
+2.5V
to
+5.5V
Enable Voltage (V
EN1
, V
EN2
) ..............................
−0.3V
to V
IN
Junction Temperature (T
A
) ........................ –40°C to +125°C
Junction Thermal Resistance
6-Bump, 0.5mm Pitch WLCSP (θ
JA
) ................108°C/W
Electrical Characteristics
(5)
V
IN
= V
EN1
= V
EN2
= V
OUT
+ 1V; higher of the two regulator outputs; I
OUTLDO1
= I
OUTLDO2
= 100µA; C
OUT1
= C
OUT2
= 1µF; T
J
= 25°C,
bold
values indicate –40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
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
= 50mA
I
OUT
= 150mA
V
EN1
= High; V
EN2
= Low; I
OUT
= 0mA
Ground Pin Current
Ground Pin Current in
Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Auto-Discharge NFET
Resistance
Enable Inputs (EN1/EN2)
Enable Input Voltage
Enable Input Current
Turn-On Time
Notes:
1.
2.
3.
4.
5.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
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.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
Specification for packaged product only.
Min.
–2.0
–3.0
Typ.
Max.
+2.0
+3.0
Units
%
%/V
%
mV
0.02
0.3
55
175
32
32
60
0.05
73
200
325
175
30
0.3
1.2
110
310
45
45
85
1
V
EN1
= Low; V
EN2
= High; I
OUT
= 0mA
V
EN1
= V
EN2
= High; I
OUT1
= I
OUT2
= 0mA
V
EN1
= V
EN2
= 0V
f = 1kHz; C
OUT
= 1µF
V
OUT
= 0V
C
OUT
= 1µF, 10Hz to 100kHz
MIC5389 Only; V
EN1
= V
EN2
= 0V; V
IN
= 3.6V
µA
µA
dB
550
mA
µV
RMS
Ω
Logic Low
Logic High
V
IL
≤
0.2V
V
IH
≥
1.2V
C
OUT
= 1µF
1.2
0.01
0.01
50
0.2
1
1
125
V
µA
µs
July 2011
4
M9999-071211-A
Micrel, Inc.
MIC5388/9
Typical Characteristics
Power Supply
Rejection Ratio
3
100µA
-100
-90
-80
Output Voltage
vs. Input Voltage
LDO1 150mA
LDO1 100μA
LDO2 100μA
3.00
Output Voltage
vs. Output Current
PSRR (dB)
-70
-60
-50
-40
-30
-20
-10
0
V
IN
= V
EN
= 4.1V
V
OUT1
= 2.80V
C
OUT1
= 1µF/10V
10
100
1000
10000
100000
50mA
150mA
`
OUTPUT VOLTAGE (V)
2
1.5
1
V
OUT1
= 2.8V
LDO2 150mA
OUTPUT VOLTAGE (V)
2.5
2.90
2.80
2.70
0.5
0
2.5
3
3.5
V
OUT2
= 1.8V
C
IN
= C
OUT
= 1μF
2.60
V
IN
= V
EN
= V
OUT
+ 1V
V
OUT1
= 2.8V
C
IN
= C
OUT
= 1µF
4
4.5
5
5.5
2.50
10
30
50
70
90
110
130
150
FREQUENCY(Hz)
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
45
43
Ground Current
vs. Input Voltage
90
80
Ground Current
vs. Output Current
80
DUAL OUTPUT
Ground Current
vs. Temperature
GROUND CURRENT (μA)
70
60
50
40
30
20
10
0
SINGLE OUTPUT 100µA
V
IN
= V
EN
= 3.8V
V
OUT1
= 2.8V
V
OUT2
= 1.8V
C
IN
= C
OUT
= 1µF
-40
-20
0
20
40
60
80
100
120
SINGLE OUTPUT 50mA
DUAL OUTPUT 100µA
GROUND CURRENT (μA)
41
39
37
35
33
31
29
27
25
2.5
3
3.5
4
4.5
5
5.5
V
IN
= V
EN2
V
OUT2
= 1.8V
C
IN
= C
OUT
= 1μF
150mA
100µA
GROUND CURRENT (μA)
70
60
50
40
30
20
10
0
0
15
30
45
60
75
90
105 120 135 150
V
IN
= 3.8V
V
OUT1
= 2.8V
V
OUT2
= 1.8V
C
IN
= C
OUT
= 1μF
SINGLE OUTPUT
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
Dropout Voltage
vs. Output Current
175
Dropout Voltage
vs. Temperature
240
220
Current Limit
vs. Input Voltage
500
C
IN
= C
OUT
= 1μF
150mA
DROPOUT VOLTAGE (mV)
DROPOUT VOLTAGE (mV)
180
160
140
120
100
80
60
40
20
0
-40
125
100
75
50
25
0
0
20
40
60
80
100
120
140
160
V
OUT1
= 2.8V
C
IN
= C
OUT
= 1μF
CURRENT LIMIT (mA)
150
200
400
LDO2
100mA
300
LDO1
200
V
OUT1
= 2.8V
V
OUT2
= 1.8V
C
IN
= C
OUT
= 1μF
0
2.5
3
3.5
4
4.5
5
5.5
50mA
100
10mA
-20
0
20
40
60
80
100
120
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
July 2011
5
M9999-071211-A
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