CM1117
1A L
OW
D
ROPOUT
V
OLTAGE
R
EGULATOR
GENERAL DESCRIPTION
The CM1117 series of adjustable and fixed voltage regulators
are designed to provide 1A for applications requiring high
efficiency. All internal circuitry is designed to operated down to
800mV input to output differential and the dropout voltage is
fully specified as a function of load current.
The CM1117 offers current limiting and thermal protection.
The on chip trimming adjusts the reference voltage accuracy
to 1%.
FEATURES
Three Terminal Adjustable or Fixed Voltages: 1.8V, 2.5V,
3.3V, and adjustable.
Output Current of 1A
Low dropout voltage: 1V Typ.
Line Regulation: 0.2% Max
Load Regulation: 0.4% Max
Fast Transient Response
Thermal Protection
SOT-223 and TO-252 package available
APPLICATIONS
High Efficiency Linear Regulators
Post Regulators for Switching Supplies
Battery Chargers
Active SCSI Terminators
Post Regulator for Switching DC/DC Converter
Battery Powered Instrumentation
PIN CONFIGURATION
TO-252
Front View
V IN
VOUT
G N D /AD J
3
VOUT
2
SOT-223
Top View
2
1
GND/ADJ
1
ORDERING INFORMATION
Package Type
TO-252
CM1117DCN252
CM1117KCN252
CM1117SCN252
CM1117CN252
CM1117GDCN252*
CM1117GKCN252*
CM1117GSCN252*
CM1117GCN252*
*Note:
G : Suffix for Pb Free Product
SOT-223
CM1117DCM223
CM1117KCM223
CM1117SCM223
CM1117CM223
CM1117GDCM223*
CM1117GKCM223*
CM1117GSCM223*
CM1117GCM223*
Operating Temperature
Range (T
A
)
0℃ ~ +70℃
0℃ ~ +70℃
0℃ ~ +70℃
0℃ ~ +70℃
0℃ ~ +70℃
0℃ ~ +70℃
0℃ ~ +70℃
0℃ ~ +70℃
Output Voltage
1.8V
2.5V
3.3V
ADJ.
1.8V
2.5V
3.3V
ADJ.
2004/06/01
Preliminary
Rev. 1.5
Champion Microelectronic Corporation
VIN
3
Page 1
CM1117
1A L
OW
D
ROPOUT
V
OLTAGE
R
EGULATOR
ABSOLUTE MAXIMUM RATINGS
Input Voltage
…………….…………………………………………….……. +12V
Operating Junction Temperature Range, T
J
……………...… 0℃ to +125℃
Storage Temperature ………………………………….….…... -65℃ to +150℃
Lead Temperature (10 sec.) ……..……………………..….…………….... 260℃
RESOMMENDED OPERATING CONDITIONS
Parameter
Input Voltage
Symbol
V
IN
Min.
2.7
Typ.
Max
7
Units
V
THERMAL INFORMATION
Parameter
Thermal Resistance (Θ
jc
)
Thermal Resistance (Θ
ja
)
Internal Power Dissipation (P
D
) (ΔT = 100℃, No Heatsink)
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
SOT-223
TO-252
SOT-223
TO-252
SOT-223
TO-252
Maximum
50
50
100
80
900
1500
150
300
Unit
℃/W
℃/W
mW
℃
℃
BLOCK DIAGRAM
2004/06/01
Preliminary
Rev. 1.5
Champion Microelectronic Corporation
Page 2
CM1117
1A L
OW
D
ROPOUT
V
OLTAGE
R
EGULATOR
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
OUT
= 10mA, and T
J
= +25℃; unless otherwise noted
CM1117
Min.
1.238
1.764
2.450
3.234
Typ.
1.250
1.800
2.500
3.300
0.04
1.0
0.10
1.0
1
1.1
1
1.1
5
12
60
75
0.01
50
0.1
120
14
14
1.30
Max.
1.262
1.836
2.550
3.366
0.20
6.0
0.30
10.0
Parameter
Reference Voltage
Output Voltage
Device
CM1117
CM1117D
CM1117K
CM1117S
Adj. Output
Fixed Output
Adj. Output
Fixed Output
Fixed Output
Fixed Output
Test Conditions
I
OUT
= 10mA, V
IN
= 5V
10mA <= I
OUT
<= 1A, 3.2V<= V
IN
<= 7V
10mA <= I
OUT
<= 1A, 4.25V<= V
IN
<= 7V
10mA <= I
OUT
<= 1A, 4.75V<= V
IN
<= 7V
I
OUT
= 10mA, 1.5V<= V
IN
<= 7V
I
OUT
= 10mA, V
OUT
+ 1.5V<= V
IN
<= 7V
10mA <= I
OUT
<= 1A, V
IN
– V
OUT
= 3V
10mA <= I
OUT
<= 1A, V
IN
= V
OUT
+ 1.5V
I
OUT
= 10mA
I
OUT
= 1A
(V
IN
– V
OUT
) = 3V
V
IN
<= 7V
Unit
V
V
V
V
%
mV
%
mV
V
A
mA
mA
dB
%W
µA
Line Regulator
Load Regulation
Dropout Voltage
(V
IN
– V
OUT
)
Current Limit
Minimum Load
Current (Note 1)
Quiescent Current
Ripple Rejection
(Note 2)
Thermal Regulation
(Note 2)
Adjust Pin Current
Fixed Output
V
IN
<= 7V
f
O
= 120Hz, 1V
RMS
, , I
OUT
= 400mA, (V
IN
– V
OUT
)= 3V
T
A
= 25℃, 30ms pulse
I
OUT
= 10mA, V
IN
– V
OUT
= 2V
Note 1:
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 2:
These parameters, although guaranteed, are not tested in production.
2004/06/01
Preliminary
Rev. 1.5
Champion Microelectronic Corporation
Page 3
CM1117
1A L
OW
D
ROPOUT
V
OLTAGE
R
EGULATOR
APPLICATION CIRCUIT
Adjustable Regulator
VOUT = 1.25V (1+R2/R1)
5V Regulator with Shutdown
Fixed Voltage Regulator
2004/06/01
Preliminary
Rev. 1.5
Champion Microelectronic Corporation
Page 4
CM1117
1A L
OW
D
ROPOUT
V
OLTAGE
R
EGULATOR
PACKAGE DIMENSION
SOT-223 (M223)
D
B1
A
E
L1
H
e
e1
A
8°
B
B1
D
E
e
e1
H
L
L1
B
B
θ
TO-252 (N252)
Y
B
R
C
E
X
L2
L1
K
S
D
G
J
H
L
2004/06/01
Preliminary
Rev. 1.5
Champion Microelectronic Corporation
A
L
Page 5
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