MIC69151/153
Single Supply V
IN
, Low V
IN
, Low V
OUT
,
1.5A LDO
General Description
Features
The MIC69151/153 is the 1.5A output current member of
•
Single input voltage range: V
IN
: 1.65V to 5.5V
the MIC69xxx family of high current, low voltage
•
Maximum dropout (V
IN
– V
OUT
) of 500mV
regulators, which support currents of 1A, 1.5A, 3A, and 5A.
over temperature
The MIC69151/153 operates from a single low voltage
•
Adjustable output voltage down to 0.5V
supply, yet offers high precision and ultra-low dropout of
•
Stable with 10µF ceramic output capacitor
500mV under worst case conditions.
•
Excellent line and load regulation specifications
The MIC69151/153 operates from an input voltage of
•
Logic controlled shutdown
1.65V to 5.5V. It is designed to drive digital circuits
requiring low voltage at high currents (i.e. PLDs, DSP,
•
Thermal shutdown and current limit protection
®
microcontroller, etc.). These regulators are available in
•
10-Pin 3mm x 3mm MLF package
adjustable and fixed output voltages including 1.8V. The
•
EPAD SOIC-8 package
adjustable version can support output voltages down to
•
Available –40°C to +125°C junction temperature
0.5V.
The µCap design of the MIC69151/153 is optimized for
stability with low value low-ESR ceramic output capacitors.
Applications
Features of the MIC69151/153 include thermal shutdown
•
Point-of-load applications
and current limit protection. Logic enable and error flag
•
Industrial power
pins are also available.
•
Sensitive RF applications
The MIC69151/153 is offered in a tiny 10-pin 3mm x 3mm
®
MLF package and an EPAD SOIC-8 package. Both
packages have an operating temperature range of
–40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
Fixed 1.8V Regulator w/Flag Error
Adjustable Regulator
Super ßeta PNP is a registered trademark of Micrel, 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
July 2010
M9999-071210-D
Micrel, Inc.
MIC69151/153
Ordering Information
Part Number
MIC69151-1.8YML
MIC69151-1.8YME
MIC69153YME
MIC69153YML
Nominal
Output Voltage
1.8V
1.8V
Adj.
Adj.
Junction
Temperature Range
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
Package
10-Pin 3x3 MLF
®
Lead Finish
Pb-Free
Pb Free
Pb Free
Pb-Free
8-Pin EPAD SOIC
8-Pin EPAD SOIC
10-Pin 3x3 MLF
®
Pin Configuration
FLG
NC
GND
NC
NC
1
2
3
4
5
10 ADJ/SNS
9
8
7
6
®
VOUT
NC
VIN
EN
GND
EN
VIN
VIN
1
2
3
4
8 FLG
7 SNS/ADJ
6 VOUT
5 VOUT
10-Pin 3mm x 3mm MLF (ML)
8-Pin EPAD SOIC (ME)
Pin Description
Pin Number
MLF-10
Pin Number
EPAD SOIC-8
Pin Name
Pin Function
1
2, 4, 5, 8
3 (EP)
6
7
9
10 (Adj)
10 (Fixed)
8
–
1
2
3, 4
5, 6
7 (Adj)
7 (Fixed)
FLG
NC
GND
EN
VIN
VOUT
ADJ
SNS
Error Flag (Output): Open collector output. Active low indicates an output fault
condition.
Not internally connected.
Ground (exposed pad is recommended to connect to ground on MLF ).
Enable (Input): CMOS compatible input. Logic high = enable,
logic low = shutdown. Do not leave pin floating.
Input voltage which supplies current to the output power device.
Regulator Output.
Adjustable regulator feedback input. Connect to resistor voltage divider.
Sense pin, connect to output for improved voltage regulation.
®
July 2010
2
M9999-071210-D
Micrel, Inc.
MIC69151/153
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
) ................................................6V
Logic Input Voltage (V
EN
, V
LQ
)................................ 0V to V
IN
(3)
Power Dissipation (P
D
) ........................... Internally Limited
Flag ..................................................................................6V
Storage Temperature (T
S
)......................... –65°C to +125°C
(4)
ESD ............................................................................. 2kV
Operating Ratings
(2)
Supply Voltage (V
IN
) ....................................... 1.65V to 5.5V
Enable Input Voltage (V
EN
)..................................... 0V to V
IN
Junction Temperature (T
J
) ..................–40°C
≤
T
J
≤
+125°C
Package Thermal Resistance
®
3x3 MLF (θ
JA
) ...................................................60°C/W
EPAD SOIC-8 (θ
JA
) ............................................41°C/W
Electrical Characteristics
(4)
T
A
= 25°C with V
IN
= V
OUT
+ 1V;
bold
values indicate –40°C< T
J
< +125°C; I
OUT
= 10mA; C
OUT
4.7µF ceramic, unless otherwise noted.
Parameter
Output Voltage Accuracy (Fixed)
Adjustable Feedback Voltage
(Adj)
Feedback Pin Current
Output Voltage Line Regulation
(Note 5)
Conditions
Over temperature range
Min
–2
0.49
Typ
Max
+2
0.51
Units
%
V
0.5
0.25
±0.2
±0.2
185
250
1.6
7.5
20
1
2.6
10
165
0.6
Output Voltage Load Regulation
V
IN
– V
O
; Dropout Voltage
(Note 6)
Ground Pin Current
Ground Pin Current in Shutdown
Current Limit
Start-up Time
Thermal Shutdown
Enable Input
Enable Input Threshold
Enable Pin Input Current
Flag Output
V
IN
= V
OUT
+1.0V to 5.5V
For V
OUT
≥
0.65V, V
IN
= 1.65 to 5.5V
I
L
= 10mA to 1.5A
I
L
= 1.0A
I
L
= 1.5A
I
L
= 10mA
I
L
= 0.5A
I
L
= 1.5A
V
EN
= 0V
V
OUT
= 0V
V
EN
= V
IN
1
±0.3
µA
%/V
%
mV
mV
mA
mA
mA
µA
A
µs
°C
V
V
µA
µA
µA
mV
300
500
20
35
1.7
150
Regulator enable
Regulator shutdown
V
IL
≤
0.2V (Regulator shutdown)
V
IH
≥
0.8V (Regulator enable)
Flag Output Leakage Current (Flag Off)
Output Logic-Low Voltage (undervoltage condition),
I
L
= 5mA
Threshold, % of V
OUT
below nominal (falling)
Hysteresis
0.8
0.2
0.005
7
0.05
150
7.5
10
2
14
I
FLG(LEAK)
V
FLG(LO)
V
FLG
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 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.
4. Specification for packaged product only.
5. Minimum input for line regulation test is set to V
OUT
+ 1V relative to the highest output voltage.
6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential.
For outputs below 1.65V, dropout voltage is considered the input-to-output voltage differential with the minimum input voltage of 1.65V. Minimum
input operating voltage is 1.65V.
July 2010
3
M9999-071210-D
Micrel, Inc.
MIC69151/153
Typical Characteristics
70
60
50
40
30
20
V
IN
= 3.3V
10 V
OUT
= 1.8V
I
OUT
= 0.5A
0
1K 10K
FREQUENCY (Hz)
Power Supply
Rejection Ratio
300
250
200
150
100
50
Dropout Voltage
vs. Output Current
400
350
300
250
200
150
100
Dropout Voltage
vs. Temperature
I
OUT
=1.5A
I
OUT
=750mA
V
IN
= 3.3V
V
OUT
= 1.8V
20 40 60 80
TEMPERATURE (°C)
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
OUTPUT CURRENT (A)
V
OUT
= 1.8V
C
OUT
= 10µF
50
0
18
16
14
12
10
8
6
4
2
0
Ground Current
vs. Output Current
16
14
12
10
8
6
Ground Current
vs. Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
Output Voltage
vs. Input Voltage
1A
750mA
1A
V
IN
= 3V
V
OUT
= 1.8V
C
OUT
= 10µF
800
1200
OUTPUT CURRENT (mA)
0.5A
4 V =V
+1
IN
OUT
2 V
OUT
= 1.8V
C
OUT
= 10µF
0
20 40 60 80
TEMPERATURE (°C)
V
OUT
= 1.8V
C
OUT
= 10µF
0.5 1.0 1.5 2.0 2.5
INPUT VOLTAGE (V)
3.0
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
Output Voltage
vs. Temperature
2.8
2.7
2.6
2.5
2.4
2.3
2.2
Current Limit
vs. Temperature
Load Regulation
1.802
1.800
1.798
1.796
1.794
1.792
1.790
V
IN
= 3.3V
V
OUT
= 1.8V
I
OUT
= 10mA
20 40 60 80
TEMPERATURE (°C)
2.1
2.0
1.9
1.8
V
IN
= 3.3V
V
OUT
= 1.8V
20 40 60 80
TEMPERATURE (°C)
V
IN
= 3V
1.788 V
OUT
= 1.8V
C
OUT
= 10µF
1.786
0 0.25 0.5 0.75 1.0 1.25 1.5
OUTPUT CURRENT (A)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Enable Threshold
vs. Temperature
ON
V
IN
= 2.8V
V
OUT
= 1.8V
C
OUT
= 10µF
I
OUT
= 100mA
OFF
20 40 60 80
TEMPERATURE (°C)
July 2010
4
M9999-071210-D
Micrel, Inc.
MIC69151/153
Functional Characteristics
July 2010
5
M9999-071210-D
单片机
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