MIC69101/103
Single Supply V
IN
, LOW V
IN
, LOW V
OUT
,
1A LDO
General Description
Features
The MIC69101/103 is the 1A output current member of the
∑
Single input voltage range: V
IN
: 1.65V to 5.5V
MIC69xxx family of high current, low voltage regulators,
∑
Maximum dropout (V
IN
– V
OUT
) of 500mV
which support currents of 1A, 1.5A, 3A, and 5A. The
over temperature
MIC69101/103 operates from a single low voltage supply,
∑
Adjustable output voltage down to 0.5V
yet offers high precision and ultra-low dropout of 500mV
∑
Stable with 4.7µF ceramic output capacitor
under worst case conditions.
∑
Excellent line and load regulation specifications
The MIC69101/103 operates from an input voltage of
∑
Logic controlled shutdown
1.65V to 5.5V. It is designed to drive digital circuits
∑
Thermal shutdown and current limit protection
requiring low voltage at high currents (i.e. PLDs, DSP,
®
∑
10-Pin 3mm x 3mm MLF package
microcontroller, etc.). These regulators are available in
adjustable and fixed output voltages including 1.8V. The
∑
Available –40°C to +125°C junction temperature
adjustable version can support output voltages down to
0.5V.
Applications
The
µCap
design of the MIC69101/103 is optimized for
∑
Point-of-load applications
stability with low value low-ESR ceramic output capacitors.
∑
Industrial power
Features of the MIC69101/103 include thermal shutdown
and current limit protection. Logic enable and error flag
∑
Sensitive RF applications
pins are also available.
The MIC69101/103 is offered in a tiny 10-pin 3mm x 3mm
®
MLF package and has an operating temperature range of
–40°C to +125°C.
Datasheets 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
December 2008
M9999-121908-B
Micrel, Inc.
MIC69101/103
Ordering Information
Part Number
MIC69101-1.8YML
MIC69103YML
Nominal
Output Voltage
1.8V
Adj.
Junction
Temperature Range
–40° to +125°C
–40° to +125°C
Package
10-Pin 3x3 MLF
10-Pin 3x3 MLF
®
®
Lead Finish
Pb-Free
Pb-Free
Pin Configuration
FLG
NC
GND
NC
NC
1
2
3
4
5
10 ADJ/SNS
9
8
7
6
®
VOUT
NC
VIN
EN
10-Pin 3mm x 3mm MLF (ML)
Pin Description
Pin Number
1
2, 4, 5, 8
3 (EP)
6
7
9
10 (Adj)
10 (Fixed)
Pin Name
FLG
NC
GND
EN
VIN
VOUT
ADJ
SNS
Pin Function
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.
®
December 2008
2
M9999-121908-B
Micrel, Inc.
MIC69101/103
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
®
MLF (q
JA
)............................................................. 60°C/W
Electrical Characteristics
(4)
T
A
= 25°C with V
IN
= V
OUT
+ 0.5V;
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)
Output Voltage Accuracy (Adj)
Feedback Pin Current
Output Voltage Line Regulation
(Note 5)
Output Voltage Load Regulation
V
IN
– V
O
; Dropout Voltage
(Note 6)
Ground Pin Current
Conditions
Over temperature range
Min
–2
0.49
Typ
0.5
0.21
±0.1
±0.25
150
215
1.1
4.7
11
1
1.95
10
165
0.6
0.2
0.005
7
0.05
150
7.5
10
2
14
Max
+2
0.51
1
±0.3
Units
%
V
µA
%/V
%
mV
mV
mA
mA
mA
µA
A
µs
°C
V
V
µA
µA
µA
mV
%
%
Ground Pin Current in Shutdown
Current Limit
Start-up Time
Thermal Shutdown
Enable Input
Enable Input Threshold
Enable Pin Input Current
Flag Output
I
FLG(LEAK)
V
FLG(LO)
V
FLG
Notes:
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 1A
I
L
= 0.5A
I
L
= 1.0A
I
L
= 10mA
I
L
= 0.5A
I
L
= 1.0A
V
EN
= 0V
V
OUT
= 0V
V
EN
= V
IN
300
500
20
1.2
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
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
) /
q
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.
December 2008
3
M9999-121908-B
Micrel, Inc.
MIC69101/103
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
400
350
300
250
200
150
100
50
0
100
Dropout Voltage
vs. Output Current
400
350
300
250
200
150
100
Dropout Voltage
vs. Temperature
I
OUT
=1A
I
OUT
=0.5A
V
OUT
= 1.8V
C
OUT
= 10µF
20 40 60 80
TEMPERATURE (°C)
V
OUT
= 1.8V
C
OUT
= 10µF
300
500
700
900
OUTPUT CURRENT (mA)
50
0
2.00
1.95
1.90
1.85
1.80
1.75
1.70
1.65
1.60
Output Voltage
vs. Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
Outpout Voltage
vs. Input Voltage
10
9
8
Ground Current
vs. Output Current
0.5A
1A
7
6
5
4
3
2
1
0
V
IN
= 2.8V
V
OUT
= 1.8V
C
OUT
= 10µF
0.5
0.7
OUTPUT CURRENT (A)
V
IN
= V
OUT
+ 1V
V
OUT
= 1.8V
C
OUT
= 10µF
I
OUT
= 10mA
20 40 60 80
TEMPERATURE (°C)
0.6
0.4
0.2
0
0
V
OUT
= 1.8V
C
OUT
= 10µF
0.4 0.8 1.2 1.6 2.0 2.4 2.8
INPUT VOLTAGE (V)
20
18
16
14
12
10
8
6
4
2
0
Ground Current
vs. Temperature
V
IN
= V
OUT
+ 1V
V
OUT
= 1.8V
C
OUT
= 10µF
1A
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
Load Regulation
1.900
1.875
1.850
ON
OFF
V
IN
= 2.8V
V
OUT
= 1.8V
C
OUT
= 10µF
I
OUT
= 100mA
20 40 60 80
TEMPERATURE (°C)
1.825
1.800
1.775
1.750
1.725
1.700
V
IN
= 2.8V
V
OUT
= 1.8V
C
OUT
= 10µF
0.4
0.6
OUTPUT CURRENT (A)
0.5A
20 40 60 80
TEMPERATURE (°C)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
Current Limit
vs. Temperature
V
IN
= 2.8V
V
OUT
= 1.8V
C
OUT
= 10µF
20 40 60 80
TEMPERATURE (°C)
December 2008
4
M9999-121908-B
Micrel, Inc.
MIC69101/103
Functional Characteristics
December 2008
5
M9999-121908-B
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