E L E C T R O N I MT1117 C 1A LDO LINEAR VOLTAGE / REGULATORS ◆ DESCRIPTION The MT1117 series are low-drop-out ( LDO ) linear regulators. The devices have been optimized for applications where fast transient response and minimum input voltages are critical. The internal over-current protection and thermal protection ,makes the device extremely easy to use in a wide range of applications. ◆ ◆ FEATURES * Low dropout performance * Output current of 800mA typical * Wide range input supply voltage * Thermal shutdown protection * Fixed 1.8V, 2.5V, 3.3V output voltages available * SOT-223 packages available APPLICATIONS * Active SCSI terminators * High efficiency linear regulators * Motherboard clock supplies ◆ PIN CONFIGURATIONS SOT-223 TO-252 (Top View) (Top View) 1 2 3 1 1: GND, 2: OUT, 3: IN ◆ 2 3 1: OUT, 2: GND, 3: IN ABSOLUTE MAXTMUM RETINGS SYMBOL PARAMETER MAXIMUM UNITS V VIN Input supply voltage 7 θJC Thermal resistance junction to case SOT-223 TO-252 15 10 O C/W θJA Thermal resistance junction to ambient SOT-223 TO-252 156 90 O C/W O TJ Operating junction temperature range 0 to 125 C O TSTG Storage temperature range - 40 to 150 C O TLEAD Lead temperature (soldering) 10sec 260 C Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. http:// www.sirectsemi.com -1- MT1117 ◆ ORDERING INFORMATION DEVICE MT1117A A MT1117-X.X A ◆ VOUT VOLTS TA (OC) X.X_ 1.5 / 1.8 / 2.5 / 2.8 / 3.0 / 3.3 0~70 PACKAGE SOT-223 POWER DISSIPATION TABLE: Package θJA ( C /W ) O Df( mW/ C) O TA≥ 25 C O TA≤ 25 C Power rating(mW) TA=70 OC Power rating(mW) TA= 85 OC Power rating (mW) A 156 7.35 919 588 478 O Note : 1.θJA: Thermal Resistance-Junction to Ambient, DF : Derating factor, Po: Power consumption. Junction Temperature Calculation: TJ = TA + (PD × θJA), Po = DF × (TJ- TA) The θJA numbers are guidelines for the thermal performance of the device/PC-board system. All of the above assume no ambient airflow. 2.θJT: Thermal Resistance-Junction to Ambient, TC: case(Tab) temperature, TJ = TC + (PD × θJT) For A package, θJT = 15.0 C /W. O For B package, θJT = 7.0 C /W. O ◆ RECOMMENDED OPERATING CONDITIONS: Parameter Symbol VIN IO CIN COUT TJ ◆ Input Voltage Load Current (with adequate heatsinking) Input Capacitor (VIN to GND) Output Capacitor with ESR of 10Ω max., (VOUT to GND) Recommended Operating Min. Typ. Max. 3 6 0.1 1.0 4.7 Junction temperature 125 Units V mA μF μF O C TYPICAL APPLICATIONS: Fixed Voltage Regulator: VIN VOUT MT1117-X.X CIN 1μF IQ http:// www.sirectsemi.com COUT 4.7μF -2- MT1117 ◆ ELECTRICAL CHARACTERISTICS: O Operating Conditions: 3V≦ VIN ≦ 6V, TJ = 0～125 SYMBOL PARAMETER C unless otherwise specified. TEST CONDITION MIN TYP MAX UNITS 10mA≤ IOUT≤ 1A TA=25 OC, MT1117-1.5, 3V ≤ VIN ≤ 5.5V MT1117-1.8, 3V ≤ VIN ≤ 5.5V MT1117-2.5, 3.5V ≤ VIN ≤ 5.5V MT1117-2.8, 3.8V ≤ VIN ≤ 5.5V MT1117-3.0, 4V ≤ VIN ≤ 5.5V MT1117-3.3, 4.3V ≤ VIN ≤ 5.5V (VOUT+1V) ≤ VIN ≤ 5.5V IOUT=10mA 1.764 2.450 3.234 1.8 2.5 3.3 1.836 2.550 3.366 V V V 0.005 1.0 % VO Output Voltage (1) VSR Line Regulation (1) VLR Load Regulation (1) 10mA≤ IOUT≤ 1A 0.5 % VD Dropout Voltage (2) VIN≥2V, IOUT=1A 0.65 V ICL Current Limit (VIN-VOUT)=2V 1.5 A IQ Quiescent Current VIN=VOUT+1.25 1 mA IO Minimum Load Current 1.5V≤ (VIN-VOUT) ≤ 5.75V RA Ripple Rejection Ratio f = 120Hz, 0.1 mA 75 dB NOTES: (1) Low duty cycle pulse testing with which TJ remain unchanged. (2) Δ VOUT, ΔVREF = 1% TYPICAL PERFORMANCE CHARACTERISTICS: O VIN= 5V，CIN=10μF，COUT= 22μF，TA=25 C unless otherwise specified. DROPOUT VOLTAGE vs. OUTPUT CURRENT 1.3 1.2 Dropout Voltage (V) ◆ 1.1 1 0.9 0.8 0.7 0.6 0.5 10 100 300 500 800 Output Current (mA) http:// www.sirectsemi.com -3- MT1117 ◆ APPLICATION NOTE: 1. Maximum Power Dissipation Calculation: PD(max) = [(VIN(max) - VO(nom))] × IO(nom) + VIN(max) × IQ Where: VO(nom) : The nominal output voltage IO(nom) : The nominal output current, and IQ : The quiescent current the regulator consumes at IO(MAX) VIN(max) : The maximum input voltage Then θJA = (150 OC – TA) / PD ◆ PHYSICAL DIMENSIONS: 3-Pin Surface Mount SOT-223(A) MILLIMETERS D A MIN TYP MAX A 1.50 1.65 1.80 A1 0.02 0.05 0.08 B 0.60 0.70 0.80 c B1 H E K L e A1 e1 B1 2.90 - 3.15 c 0.28 0.30 0.32 D 6.30 6.50 6.70 E 3.30 3.50 3.70 e 2.3 BSC e1 4.6 BSC H 6.70 7.00 7.30 L 0.91 1.00 1.10 K 1.50 1.75 2.00 α 0° 5° 10° β B 3° Sirectifier Global Corp., Delaware, U.S.A. U.S.A.: [email protected] France: [email protected] Taiwan: [email protected] Hong Kong: [email protected] China: [email protected] …Thailand: [email protected] Philippines: [email protected] Belize: [email protected] http:// www.sirectsemi.com -4-