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