CHAMP CM1117SCN252 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
800mV input to output differential and the dropout voltage is
Low dropout voltage: 1V Typ.
fully 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
TO-252
Front View
VOUT
2
G N D /AD J
1
VIN
3
VOUT
V IN
GND/ADJ
SOT-223
Top View
1
2
3
ORDERING INFORMATION
Package Type
Operating Temperature
Output Voltage
TO-252
SOT-223
Range (TA)
CM1117DCN252
CM1117DCM223
0℃ ~ +70℃
1.8V
CM1117KCN252
CM1117KCM223
0℃ ~ +70℃
2.5V
CM1117SCN252
CM1117SCM223
0℃ ~ +70℃
3.3V
CM1117CN252
CM1117CM223
0℃ ~ +70℃
ADJ.
CM1117GDCN252*
CM1117GDCM223*
0℃ ~ +70℃
1.8V
CM1117GKCN252*
CM1117GKCM223*
0℃ ~ +70℃
2.5V
CM1117GSCN252*
CM1117GSCM223*
0℃ ~ +70℃
3.3V
CM1117GCN252*
CM1117GCM223*
0℃ ~ +70℃
ADJ.
*Note: G : Suffix for Pb Free Product
2004/06/01 Preliminary
Rev. 1.5
Champion Microelectronic Corporation
Page 1
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
ABSOLUTE MAXIMUM RATINGS
Input Voltage
…………….…………………………………………….……. +12V
Operating Junction Temperature Range, TJ ……………...… 0℃ to +125℃
Storage Temperature ………………………………….….…... -65℃ to +150℃
Lead Temperature (10 sec.) ……..……………………..….…………….... 260℃
RESOMMENDED OPERATING CONDITIONS
Parameter
Symbol
VIN
Input Voltage
Min.
2.7
Typ.
Max
7
Units
V
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
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 LOW DROPOUT VOLTAGE REGULATOR
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IOUT = 10mA, and TJ = +25℃; unless otherwise noted
Parameter
Device
Test Conditions
Reference Voltage
CM1117
Output Voltage
Line Regulator
Load Regulation
Dropout Voltage
(VIN – VOUT )
Current Limit
Unit
Typ.
Max.
IOUT = 10mA, VIN= 5V
1.238
1.250
1.262
V
CM1117D
10mA <= IOUT <= 1A, 3.2V<= VIN <= 7V
1.764
1.800
1.836
V
CM1117K
10mA <= IOUT <= 1A, 4.25V<= VIN <= 7V
2.450
2.500
2.550
V
CM1117S
10mA <= IOUT <= 1A, 4.75V<= VIN <= 7V
3.234
3.300
3.366
V
Adj. Output
IOUT = 10mA, 1.5V<= VIN <= 7V
0.04
0.20
%
Fixed Output
IOUT = 10mA, VOUT + 1.5V<= VIN <= 7V
1.0
6.0
mV
Adj. Output
10mA <= IOUT <= 1A, VIN – VOUT = 3V
0.10
0.30
%
Fixed Output
10mA <= IOUT <= 1A, VIN = VOUT + 1.5V
1.0
10.0
mV
IOUT = 10mA
1
IOUT = 1A
1.1
Fixed Output
Fixed Output
(VIN – VOUT ) = 3V
Minimum Load
Current (Note 1)
Quiescent Current
CM1117
Min.
Fixed Output
Ripple Rejection
(Note 2)
(Note 2)
Adjust Pin Current
1.1
V
A
VIN <= 7V
5
14
mA
VIN <= 7V
12
14
mA
fO = 120Hz, 1VRMS, , IOUT = 400mA, (VIN – VOUT )= 3V
Thermal Regulation
1
1.30
60
75
dB
TA = 25℃, 30ms pulse
0.01
0.1
%W
IOUT = 10mA, VIN – VOUT = 2V
50
120
µA
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 LOW DROPOUT VOLTAGE REGULATOR
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 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
J
D
H
G
2004/06/01 Preliminary
A
K
L1
S
L2
X
R
Rev. 1.5
Champion Microelectronic Corporation
Page 5
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
11F, No. 306-3, SEC. 1, Ta Tung Road,
Hsichih, Taipei Hsien 221, Taiwan
2004/06/01 Preliminary
T E L : +886-2-8692 1591
F A X : +886-2-8692 1596
Rev. 1.5
Champion Microelectronic Corporation
Page 6
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