1
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26 May
2003
MIK1117
800 mA LOW DROPOUT POSITIVE VOLTAGE REGULATOR
DATA SHEET
22 D
ECEMBER
2003
N
O
. 00009
R
EV
1-03
CONTENTS
Page
GENERAL DESCRIPTION
1
FEATURES
1
BLOCK DIAGRAM
2
PIN DESCRIPTION
2
ABSOLUTE MAXIMUM RATINGS
2
TYPICAL APPLICATION CIRCUIT
2
FIXED VOLTAGE REGULATOR
2
ADJUSTABLE VOLTAGE REGULATOR
2
ELECTRICAL CHARACTERISTICS
3
TYPICAL CHARACTERISTICS
4
DROPOUT VOLTAGE (V
IN
V
OUT
)
4
MINIMUM OPERATING CURRENT (A
DJUSTABLE
D
EVICE
)
4
SHORT-CIRCUIT CURRENT
4
LOAD REGULATION
4
MIK1117 RIPPLE REJECTION
4
MIK1117 RIPPLE REJECTION VERSUS CURRENT
4
TEMPERATURE STABILITY
5
ADJUST PIN CURRENT
5
TYPICAL APPLICATIONS
5
1.2V TO 5.5V ADJUSTABLE REGULATOR
5
CONTENTS
Page
5V REGULATOR WITH SHUTDOWN
5
BATTERY CHARGER
5
AUTOMATIC LIGHT CONTROL
5
ACTIVE TERMINATOR FOR SCSI-2 BUS
5
BATTERY BACKED UP REGULATED SUPPLY
5
HIGH EFFICIENCY DUAL SUPPLY
6
HIGH EFFICIENCY DUAL LINEAR SUPPLY
6
HIGH EFFICIENCY REGULATOR
6
APPLICATION INFORMATION
7
STABILITY
7
PROTECTIONS DIODES
7
OUTPUT VOLTAGE
7
LOAD REGULATION
7
THERMAL CONSIDERATIONS
7
PHYSICAL DIMENSIONS AND MARKING
DIAGRAMS
9
SOT-223-3
9
TO-252-2
9
ORDERING INFORMATION
10
RIPPLE REJECTION
8
LOW DROPOUT NEGATIVE SUPPLY
5
IMPROVING RIPPLE REJECTION
5
GENERAL DESCRIPTION
The MIK1117 is a positive low dropout regulator
designed to provide up to 800mA of output current.
The device is available in an adjustable version and
fixed output voltages of 1.8V, 2.5V, 3.0V and 3.3V.
All internal circuitry is designed to operate down to
1V input to output differential. Dropout voltage is
guaranteed at a maximum of 1.3V at 800mA,
decreasing at lower load currents. On chip trimming
adjusts the reference/output voltage to within 1%.
The low profile surface mount SOT-223 package
allows the device to be used in applications where
space is limited. The MIK1117 requires a minimum of
22F of output capacitance for stability. Output
capacitors of this size or larger are normally included
in most regulator designs.
Unlike PNP type regulators where up to 10% of the
output current is wasted as quiescent current, the
quiescent current of the MIK1117 flows into the load,
increasing efficiency.
FEATURES
Adjustable or Fixed Output
Output Current of 800mA
Low Dropout, 1.15V at 800mA Output Current
0.04% Line Regulation
0.08% Load Regulation
100% Thermal Limit Burn-In
Fast Transient Response
REPLACEMENT
of
LT1117
RC1117
EZ1117
MIK1117
800 mA LOW DROPOUT POSITIVE VOLTAGE REGULATOR
Design by Vladimir F.Lityaghin / E-mail: lityaghin@mail.ru / Tel: +7(095)532-64-54
MI
KRON
JS
C
h
ttp:
/
/www.
mi
kr
o
n
.
r
u
26 May
2
003
800 mA LOW DROPOUT POSITIVE VOLTAGE REGULATOR
MIK1117
2
BLOCK DIAGRAM
!
!
!
GND
ADJ
OUT
IN
FOR FIXED VOLTAGE DEVICE
THERMAL
LIMIT
"
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!
!
!
!
ABSOLUTE MAXIMUM RATINGS
TYPICAL APPLICATION CIRCUIT
FIXED VOLTAGE REGULATOR
ADJUSTABLE VOLTAGE REGULATOR
NOTES:
C1 needed if device is far from filter capacitors
C2 minimum value required for stability
C1
C2
10F
22F
V
IN
> 4.75V
V
OUT
= 3.3V
V
IN
V
OUT
MIK1117-3.3
GND
TAB
!
2
!
3
!
1
!
!
!
!
!
TAB
C1
C2
R1
R2
232
1%
133
1%
10F
22F
V
IN
> 4.75V
V
OUT
= 3.45V
V
IN
V
OUT
MIK1117
ADJ
!
2
!
3
!
1
!
!
!
!
!
!
!
PIN DESCRIPTION
SOT-223-3
1
-- ADJ/GND
2
-- V
OUT
3
-- IN
tab -- V
OUT
MIK1117
DT
, MIK1117-xx
DT
TO-252-2
1
-- ADJ/GND
2
-- idle pin
3
-- IN
tab -- V
OUT
MIK1117
D
, MIK1117-xx
D
tab
1
2
3
2
tab
3
1
NOTE:
Stresses above those listed under
Absolute Maximum Ratings may
cause permanent damage to the
device. These are stress ratings only
and functional operation of the
device at these or any other
conditions above those indicated in
the operation sections of the
specifications is not implied.
Exposure to Absolute Maximum
Rating conditions for extended
p er i o d s m a y a f f ec t d e v i c e
reliability.
SYMBOL
PARAMETER
MAXIMUM
UNIT
P
D
Power Dissipation
Internally Limited
W
V
IN
Input Voltage
7
V
T
J
Operating Junction Temperature Range
Control Section
0 to 125
o
C
Power Transistor
0 to 150
T
STG
Storage Temperature
-65 to 150
o
C
T
LEAD
Lead Temperature
(Soldering, 10 sec)
300
o
C
2
R
1
R
2
R
1
+
+
=
ADJ
REF
OUT
I
V
V
3
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26 May
2003
MIK1117
800 mA LOW DROPOUT POSITIVE VOLTAGE REGULATOR
The
denotes the specifications which apply over the full temperature range.
Note 1: For MIK1117 (adjustable) Vadj = 0V
Note 2: For the adjustable device the minimum load current is the minimum current required to maintain regulation.
Normally the current in the resistor divider used to set the output voltage is selected to meet the minimum load
current requirement.
Note 3: The specification represent the minimum input/output voltage required to maintain 1% regulation.
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
LOAD
= 0 mA and T
J
= +25
C unless otherwise specified.
PARAMETER
DEVICE
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Reference Voltage
(Note 1)
MIK1117
V
IN
= 2.75V, I
LOAD
= 10mA
V
IN
= 2.7V to 7V, I
LOAD
= 10mA to 800mA
1.238
1.230
1.250
1.250
1.262
1.270
V
MIK1117-1.8
V
IN
= 4.3V
V
IN
= 3.3V, I
LOAD
= 0mA to 800mA
1.782
1.771
1.800
1.800
1.818
1.829
V
MIK1117-2.5
V
IN
= 5.0V
V
IN
= 4.0V, I
LOAD
= 0mA to 800mA
2.475
2.460
2.500
2.500
2.525
2.540
V
MIK1117-3.0
V
IN
= 5.5V
V
IN
= 4.5V, I
LOAD
= 0mA to 800mA
2.970
2.950
3.000
3.000
0.030
0.050
V
Output Voltage
MIK1117-3.3
V
IN
= 5.8V
V
IN
= 4.8V, I
LOAD
= 0mA to 800mA
3.267
3.247
3.300
3.300
3.333
3.353
V
Line Regulation
(Note 1)
All
I
LOAD
= 10mA, (1.5V+ V
OUT
) V
IN
7V
0.04 0.2 %
Load Regulation
(Note 1)
All
V
IN
= V
OUT
+2.5V,
I
LOAD
= 10mA to 800mA
0.08 0.4 %
Minimum Load Current
(Note 1, 2)
MIK1117
V
IN
= 5V
1.7 5.0 mA
Ground Pin Current
MIK1117-1.8;
2.5; 3.0; 3.3
V
IN
= V
OUT
+2.5V
I
LOAD
= 10mA to 800mA
6 10
mA
Adjust Pin Current
(Note 1)
MIK1117
V
IN
= 2.75V, I
LOAD
= 10mA
50 120 A
Current Limit
(Note 1)
All
(V
IN
- V
OUT
) = 3V
0.8 1.1
A
Ripple Rejection
(Note 1)
All
V
IN
= V
OUT
+ 2.5V, I
LOAD
= 400mA
60 75 dB
Thermal Regulation
(Note 1)
MIK1117
T
A
= 25C, 30 ms pulse
0.003 %/W
Dropout Voltage
(Note 1, 3)
All
I
LOAD
= 10mA
I
LOAD
= 800mA
1.00
1.15
1.15
1.30
V
Design by Vladimir F.Lityaghin / E-mail: lityaghin@mail.ru / Tel: +7(095)532-64-54
MI
KRON
JS
C
h
ttp:
/
/www.
mi
kr
o
n
.
r
u
26 May
2
003
800 mA LOW DROPOUT POSITIVE VOLTAGE REGULATOR
MIK1117
4
TYPICAL CHARACTERISTICS
DROPOUT VOLTAGE (V
IN
V
OUT
)
MINIMUM OPERATING CURRENT
(A
DJUSTABLE
D
EVICE
)
SHORT-CIRCUIT CURRENT
LOAD REGULATION
MIK1117 RIPPLE REJECTION
MIK1117 RIPPLE REJECTION versus CURRENT
T
J
= 125C
T
J
= 25C
0.25
0.50
0.75
1.00
1.25
1
2
3
4
5
6
7
0
S
H
O
R
T C
I
R
C
UI
T C
U
R
R
E
N
T
(A
)
INPUT OUTPUT DIFFERENTIAL
/
(V)
I
LOAD
= 800mA
0.10
0.05
-0.05
-0.10
-0.15
-0.20
-50
-25
25
50
75
100
125
0
0
OUT
P
U
T
V
O
L
T
AG
E
D
E
V
I
A
T
I
O
N
(%
)
TEMPERATURE (C)
V
RIPPLE
3V
P-P
V
RIPPLE
0.5V
P-P
(
-
)
V V
IN
OUT
3V
(
-
)
V V
IN
OUT
V
DROPOUT
C
f
ADJ
= 200F at < 60Hz
C
f
I
ADJ
OUT
= 25F at > 60Hz
= 0.5A
10
20
30
40
50
60
70
80
90
100
10
100
1k
10k
100k
0
RI
P
P
L
E
R
E
J
E
CT
I
O
N
(d
B
)
FREQUENCY (Hz)
V
RIPPLE
3V
P-P
f
RIPPLE
= 120Hz
f
RIPPLE
= 20kHz
V
RIPPLE
0.5V
P-P
V = 5V
= 25F
OUT
OUT
C
C
ADJ
= 25F
10
20
30
40
50
60
70
80
90
100
0.2
0.4
0.6
0.8
0
RI
P
P
L
E
R
E
J
E
C
T
I
O
N
(d
B
)
OUTPUT CURRENT (A)
1.4
1.2
1.0
0.8
T
J
= 125C
T
J
= 25C
0.6
0.4
0.2
100
200
300
400
500
600
700
800
0
DR
O
P
O
U
T V
O
L
T
A
G
E
(V
)
OUTPUT CURRENT (mA)
T
J
= 125C
T
J
= 25C
T
J
= -55C
1
1
2
2
3
3
4
4
5
6
7
0
M
I
N
I
MU
M O
P
E
R
A
T
I
N
G
C
U
RR
E
N
T
(m
A
)
INPUT OUTPUT DIFFERENTIAL
/
(V)
5
MI
KRON
JS
C
ht
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p
:
//ww
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.mikron.ru
26 May
2003
MIK1117
800 mA LOW DROPOUT POSITIVE VOLTAGE REGULATOR
ACTIVE TERMINATOR FOR SCSI-2 BUS
BATTERY BACKED UP REGULATED SUPPLY
1.2V to 5.5V ADJUSTABLE
REGULATOR
5V REGULATOR WITH SHUTDOWN
BATTERY CHARGER
* Needed if device is far from filter capacitor
** V
OUT
= 1.25 x (1 + (R2/R1))
IMPROVING RIPPLE REJECTION
LOW DROPOUT NEGATIVE SUPPLY
AUTOMATIC LIGHT CONTROL
*C1 IMPROVES RIPPLE REJECTION. X
C
SHOULD
BE R1 AT RIPPLE FREQUENCY
TYPICAL APPLICATIONS
TYPICAL CHARACTERISTICS
(CONTINUED)
TEMPERATURE STABILITY
ADJUST PIN CURRENT
+
-
+
-
=
R1
R2
R
R1
R2
V
IF
S
OUT
1
1
1.25V
+
-
=
R1
R2
R
V
IF
S
OUT
1
1
MIK1117
IN
OUT
ADJ
V
IN
**
V
OUT
C1
*
10F
C2
100F
R2
470
R1
121
MIK1117
IN
OUT
ADJ
V
IN
TTL
5V
100F
121
1%
1k
1k
2N3904
10F
366
1%
MIK1117
1.25V
IN
V
IN
V
OUT
R
S
R1
OUT
IF
ADJ
MIK1117
IN
OUT
ADJ
V
IN
V
IN
16.5V
10F
R2
350
1%
R1
121
1%
C1
10F
150F
MIK1117
IN
OUT
ADJ
V
IN
V
OUT
= -5V
FLOATING
INPUT
10F
100F
MIK1117
IN
OUT
ADJ
!
100F
10F
1,2k
MIK1117 2.85
-
IN
OUT
GND
18
t
o
27 l
i
n
e
s
4.75V
to
5.25V
110
110
110
110
22F
10F
MIK1117 5
-
IN
OUT
GND
MIK1117 5
-
IN
OUT
GND
V
IN
5.2V
5.0V
LINE
BATTERY
SELECT FOR
CHARGE RATE
6.5V
50
10F
10F
100F
10
20
30
40
50
60
70
80
90
100
25
50
75
100
125
0
AD
JUS
T
P
I
N
CU
R
R
E
N
T
(A
)
TEMPERATURE (C)
-2.0
-1.0
1.0
2.0
0
25
50
75
100
125
0
OU
T
P
U
T
V
O
L
T
A
G
E
C
H
A
N
G
E
(%
)
TEMPERATURE (C)
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