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CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
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* SOT-223 CM1117DCM223 CM1117KCM223 CM1117SCM223 CM1117CM223 CM1117GDCM223* CM1117GKCM223* CM1117GSCM223* CM1117GCM223* Operating Temperature Range (TA) 0J 0J 0J 0J 0J 0J 0J 0J ~ +70J ~ +70J ~ +70J ~ +70J ~ +70J ~ +70J ~ +70J ~ +70J Output Voltage 1.8V 2.5V 3.3V ADJ. 1.8V 2.5V 3.3V ADJ.
*Note: G : Suffix for Pb Free Product
2004/06/01 Preliminary
Rev. 1.5
Champion Microelectronic Corporation
VIN
3
Page 1
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
ABSOLUTE MAXIMUM RATINGS
Input Voltage ........................................................................... +12V to +125J to +150J Operating Junction Temperature Range, TJ ..................... 0J Storage Temperature .................................................. -65J
Lead Temperature (10 sec.) ......................................................... 260J
RESOMMENDED OPERATING CONDITIONS
Parameter Input Voltage Symbol VIN Min. 2.7 Typ. Max 7 Units V
THERMAL INFORMATION
Parameter Thermal Resistance (K jc) Thermal Resistance (K ja) Internal Power Dissipation (PD) (G T = 100J , 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 J /W J /W mW J J
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 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 IOUT = 10mA, VIN= 5V 10mA <= IOUT <= 1A, 3.2V<= VIN <= 7V 10mA <= IOUT <= 1A, 4.25V<= VIN <= 7V 10mA <= IOUT <= 1A, 4.75V<= VIN <= 7V IOUT = 10mA, 1.5V<= VIN <= 7V IOUT = 10mA, VOUT + 1.5V<= VIN <= 7V 10mA <= IOUT <= 1A, VIN - VOUT = 3V 10mA <= IOUT <= 1A, VIN = VOUT + 1.5V IOUT = 10mA IOUT = 1A (VIN - VOUT ) = 3V VIN <= 7V
Unit V V V V % mV % mV V A mA mA dB %W A
Line Regulator Load Regulation Dropout Voltage (VIN - VOUT ) Current Limit Minimum Load Current (Note 1) Quiescent Current Ripple Rejection (Note 2) Thermal Regulation (Note 2) Adjust Pin Current
Fixed Output
VIN <= 7V fO = 120Hz, 1VRMS, , IOUT = 400mA, (VIN - VOUT )= 3V TA = 25, 30ms pulse IOUT = 10mA, VIN - VOUT = 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 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 B1 A
E
L1
H
e e1
A
8X
B B1 D E e e1 H L L1
B
B
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
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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
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
Sales & Marketing
11F, No. 306-3, SEC. 1, Ta Tung Road, Hsichih, Taipei Hsien 221, Taiwan T E L : +886-2-8692 1591 F A X : +886-2-8692 1596
2004/06/01 Preliminary
Rev. 1.5
Champion Microelectronic Corporation
Page 6

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