CHAMP CM1117GSCM223 1a low dropout voltage regulator Datasheet

CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
FEATURES
The CM1117 series of adjustable and fixed voltage regulators
‹
Three Terminal Adjustable or Fixed Voltages: 1.8V, 2.5V,
are designed to provide 1A for applications requiring high
3.3V, and adjustable.
efficiency. All internal circuitry is designed to operated down to ‹
Output Current of 1A
1V input to output differential and the dropout voltage is fully
‹
Low dropout voltage: 1V Typ.
specified as a function of load current.
‹
Line Regulation: 0.2% Max
‹
Load Regulation: 0.4% Max
The CM1117 offers current limiting and thermal protection.
‹
Fast Transient Response
The on chip trimming adjusts the reference voltage accuracy
‹
Thermal Protection
to 1%.
‹
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
VO UT
2
G ND/ADJ
1
VIN
3
VOUT
VIN
GND/ADJ
SOT-223
Top View
TO-252
Front View
1
2
3
ORDERING INFORMATION
Operating Temperature
Package Type
Output Voltage
TO-252
SOT-223
Range (TA)
CM1117DCN252
CM1117DCM223
0℃ ~ +125℃
1.8V
CM1117KCN252
CM1117KCM223
0℃ ~ +125℃
2.5V
CM1117SCN252
CM1117SCM223
0℃ ~ +125℃
3.3V
CM1117CN252
CM1117CM223
0℃ ~ +125℃
ADJ.
CM1117GDCN252*
CM1117GDCM223*
0℃ ~ +125℃
1.8V
CM1117GKCN252*
CM1117GKCM223*
0℃ ~ +125℃
2.5V
CM1117GSCN252*
CM1117GSCM223*
0℃ ~ +125℃
3.3V
CM1117GCN252*
CM1117GCM223*
0℃ ~ +125℃
ADJ.
*Note: G : Suffix for Pb Free Product
2007/05/02 Rev1.9
Champion Microelectronic Corporation
Page 1
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
ABSOLUTE MAXIMUM RATINGS
Input Voltage
…………….…………………………………………….……. +18V
Operating Junction Temperature Range, TJ
……………...… 0℃ to +125℃
Storage Temperature ………………………………….….…... -65℃ to +150℃
Lead Temperature (10 sec.) ……..……………………..….…………….... 260℃
THERMAL INFORMATION
Parameter
Thermal Resistance (Θjc)
Thermal Resistance (Θja)
Internal Power Dissipation (PD) (ΔT = 100℃, No Heatsink)
SOT-223
TO-252
SOT-223
TO-252
SOT-223
TO-252
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
Maximum
15
50
136
80
900
1500
150
300
Unit
℃/W
℃/W
mW
℃
℃
BLOCK DIAGRAM
2007/05/02 Rev1.9
Champion Microelectronic Corporation
Page 2
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IOUT = 10mA, and TJ = +25℃; unless otherwise noted
Symbol
VREF
VOUT
ΔVOUT
ΔVOUT
VIN-VOUT
ILIMIT
Parameter
Reference Voltage
Output Voltage
Line Regulation
(Note 3)
Load Regulation
(Note 3)
Dropout Voltage
(Note 4)
Current Limit
Minimum Load
Current (Note 5)
Quiescent Current
Thermal Regulation
Ripple Regulation
Conditions
CM1117-ADJ
IOUT=10mA, VIN-VOUT=2V, TJ=25℃
10mA≤IOUT≤1A, 1.4V≤VIN-VOUT≤10V
CM1117 -1.8
IOUT=10mA, VIN=3.8V, TJ=25℃
0≤IOUT≤1A, 3.2V≤VIN-VOUT≤10V
CM1117 -2.5
IOUT=10mA, VIN=4.5V, TJ=25℃
0≤IOUT≤1A, 3.9V≤VIN-VOUT≤10V
CM1117 -3.3
IOUT=10mA, VIN=5V, TJ=25℃
0≤IOUT≤1A, 4.75V≤VIN-VOUT≤10V
CM1117 -ADJ
IOUT=10mA, 1.5V≤VIN-VOUT≤13.75V
CM1117 -1.8
IOUT=0mA, 3.2V≤VIN≤10V
CM1117 -2.5
IOUT=0mA, 3.9V≤VIN≤10V
CM1117 -3.3
IOUT=0mA, 4.75V≤VIN≤10V
CM1117 -ADJ
VIN-VOUT=3V, 10mA≤IOUT≤1A
CM1117 -1.8
VIN=3.2V, 0≤IOUT≤1A
CM1117 -2.5
VIN=3.9V, 0≤IOUT≤1A
CM1117 -3.3
VIN =4.75V, 0≤IOUT≤1A
IOUT =100mA
IOUT =500mA
IOUT =1A (TO-252)
VIN-VOUT=5V, TJ=25℃
CM1117 -ADJ
VIN=15V
CM1117 -1.8, VIN≤15V
CM1117 -2.5, VIN≤15V
CM1117 -3.3, VIN≤15V
TA=25℃, 30ms Pulse
fRIPPLE=120Hz, VIN-VOUT=3V
VRIPPLE=1VPP
Adjust Pin Current
Adjust Pin Current
Change
10mA≤IOUT≤1A
1.4V≤VIN-VOUT≤10V
Temperature Stability
Long Term Stability
RMS Output Noise
Thermal Resistance
Junction-to-Case
TA=125℃, 1000Hrs
(% of VOUT), 10Hz≤f≤10kHz
3-Lead SOT-223
3-Lead TO-252
Thermal Resistance
Junction-to-Ambient
(No heat sink;
No air flow)
2007/05/02 Rev1.9
Min
(Note 2)
Typ
(Note 1)
Max
(Note 2)
Units
1.238
1.250
1.262
V
1.764
1.8
1.836
V
2.45
2.500
2.55
V
3.234
3.300
3.366
V
0.035
0.2
%
1
6
mV
1
6
mV
1
6
mV
0.2
0.4
%
1
10
mV
1
10
mV
1
10
mV
1.10
1.15
1.20
1200
1.20
1.25
1.30
1500
V
V
V
mA
1.7
5
mA
5
5
5
0.01
10
10
10
0.1
mA
mA
mA
%/W
1000
60
3-Lead SOT-223
3-Lead TO-252 (Note 6)
Champion Microelectronic Corporation
75
dB
60
120
μA
0.2
5
μA
0.5
0.3
0.003
15.0
3.0
10
%
%
%
℃/W
℃/W
℃/W
136
79
92
℃/W
℃/W
℃/W
Page 3
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
Note 1: Typical Values represent the most likely parametric norm.
Note 2: All limits are guaranteed by testing or statistical analysis.
Note 3: Load and line regulation are measured at constant junction room temperature.
Note 4: The dropout voltage is the input/output differential at which the circuit ceases to regulate against further reduction in input
voltage. It is measured when the output voltage has dropped 100mV from the nominal value obtained at VIN = VOUT +1.5V.
Note 5: The minimum output current required to maintain regulation.
Note 6: Minimum pad size of 0.038in2
Application Hints
Thermal Considerations
Like any linear voltage regulator, CM1117 requires
It is important that the thermal limit of the package is
external capacitors to ensure stability. The external
not exceeded.
capacitors must be carefully selected to ensure
protection. When the thermal limit is exceeded, the IC
performance.
will enter protection, and VOUT will be pulled to ground.
The CM1117 has built-in thermal
The power dissipation for a given application can be
calculated as following:
Input Capacitor
An input capacitor of at least 10μF is required.
Ceramic or Tantalum can be used. The value can be
The power dissipation (PD) is
increase without upper limit.
PD = IOUT * [VIN – VOUT]
Output Capacitor
An output capacitor is required for stability.
It must be
placed no more than 1 cm away from the VOUT pin, and
connected directly between VOUT and GND pins. The
minimum value is 22μF but may be increase without
limit.
2007/05/02 Rev1.9
Champion Microelectronic Corporation
Page 4
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
APPLICATION CIRCUIT
Adjustable Regulator
VOUT = 1.25V (1+R2/R1)
5V Regulator with Shutdown
Fixed Voltage Regulator
2007/05/02 Rev1.9
Champion Microelectronic Corporation
Page 5
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
PACKAGE DIMENSION
SOT-223 (M223)
D
A
L
L1
H
E
B1
e
e1
A
8°
B
B1
D
E
e
e1
H
L
L1
B
θ
B
TO-252 (N252)
Y
C
B
E
L
D
G
2007/05/02 Rev1.9
A
K
L1
S
L2
X
R
J
H
Champion Microelectronic Corporation
Page 6
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
IMPORTANT NOTICE
Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated
circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify,
before placing orders, that the information being relied on is current.
A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or
environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for
use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is
understood to be fully at the risk of the customer.
In order to minimize risks associated with the customer’s applications, the
customer should provide adequate design and operating safeguards.
HsinChu Headquarter
Sales & Marketing
5F, No. 11, Park Avenue II,
Science-Based Industrial Park,
HsinChu City, Taiwan
T E L : +886-3-567 9979
F A X : +886-3-567 9909
7F-6, No.32, Sec. 1, Chenggong Rd., Nangang
District, Taipei City 115, Taiwan
2007/05/02 Rev1.9
T E L : +886-2-2788 0558
F A X : +886-2-2788 2985
Champion Microelectronic Corporation
Page 7
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