MT1117 SIRECT | Alldatasheet

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  • 1 -http:// www.sirectsemi.com 1A LDO LINEAR VOLTAGE / REGULATORS ◆ PIN CONFIGURATIONS 1 2 3 1 2 3 ◆ ABSOLUTE MAXTMUM RETINGS SYMBOL PARAMETER MAXIMUM UNITS VIN Input supply voltage 7 V θJC Thermal resistance junction to case SOT-223 TO-252 O C/W θJA Thermal resistance junction to ambient SOT-223 TO-252 156 O C/W TJ Operating junction temperature range 0 to 125 O C TSTG Storage temperature range - 40 to 150 O C TLEAD Lead temperature (soldering) 10sec 260 O 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. ◆ 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. ◆ APPLICATIONS * Active SCSI terminators * High efficiency linear regulators * Motherboard clock supplies ◆ 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 SOT-223 (Top View) TO-252 (Top View) 1: GND, 2: OUT, 3: IN 1: OUT, 2: GND, 3: IN E L E C T R O N I C MT1117
  • 2 -http:// www.sirectsemi.com ◆ ORDERING INFORMATION DEVICE PACKAGE VOUT VOLTS TA ( O M T 1 1 1 7 A MT1117-X.X A ◆ POWER DISSIPATION TABLE: Package θJA O C /W ) Df( mW/ O TA≥ 25 O C TA≤ 25 O C Power rating(mW) TA=70 O C Power rating(mW) TA= 85 O C Power rating (mW) A 156 7.35 919 588 478 Note : 1.θJA: Thermal Resistance-Junction to Ambient, DF : Derating factor, Po: Power consumption. Junction Temperature Calculation: T J = 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 O C /W. For B package, θJT = 7.0 O C /W. ◆ RECOMMENDED OPERATING CONDITIONS: Recommended Operating Symbol Parameter Min. Typ. Max. Units VIN Input Voltage 3 6 V IO Load Current (with adequate heatsinking) 0.1 mA CIN Input Capacitor (VIN to GND) 1.0 μF C OUT Output Capacitor with ESR of 10Ω max., (VOUT to GND) 4.7 μF TJ Junction temperature 125 O C ◆ TYPICAL APPLICATIONS: Fixed Voltage Regulator: VIN VOUT COUT 4.7μF CIN 1μF MT1117-X.X IQ MT1117
  • 3 -http:// www.sirectsemi.com 0.5 0.6 0.7 0.8 0.9 1.1 1.2 1.3 10 100 300 500 800 ◆ ELECTRICAL CHARACTERISTICS: Operating Conditions: 3V≦ VIN ≦ 6V, TJ = 0～125 O C unless otherwise specified. SYMBOL PARAMETER TEST CONDITION MIN TYP MAX UNITS VO Output Voltage (1) 10mA≤ IOUT≤ 1A TA=25 O 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 1.764 2.450 3.234 1.8 2.5 3.3 1.836 2.550 3.366 V V V VSR Line Regulation (1) (VOUT+1V) ≤ VIN ≤ 5.5V IOUT=10mA 0.005 1.0 % VLR Load Regulation (1) 10mA ≤ IOUT≤ 1A 0.5 % VD Dropout Voltage (2) V IN≥2V, IOUT=1A 0.65 V ICL Current Limit (V IN-VOUT)=2V 1.5 A IQ Quiescent Current V IN=VOUT+1.25 1 mA IO Minimum Load Current 1.5V ≤ (VIN-VOUT) ≤ 5.75V 0.1 mA RA Ripple Rejection Ratio f = 120Hz, 75 dB NOTES: (1) Low duty cycle pulse testing with which TJ remain unchanged. (2) Δ VOUT, ΔVREF = 1% ◆ TYPICAL PERFORMANCE CHARACTERISTICS: Dropout Voltage (V) Output Current (mA) DROPOUT VOLTAGE vs. OUTPUT CURRENT VIN= 5V，CIN=10μF，COUT= 22μF，TA=25 O C unless otherwise specified. MT1117
  • 4 -http:// www.sirectsemi.com ◆ 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 I O(nom) : The nominal output current, and I Q : The quiescent current the regulator consumes at IO(MAX) V IN(max) : The maximum input voltage Then θJA = (150 O C – TA) / PD ◆ PHYSICAL DIMENSIONS: 3-Pin Surface Mount SOT-223(A) D B K EH e A L c MILLIMETERS MIN TYP MAX A 1.50 1.65 1.80 A1 0.02 0.05 0.08 B 0.60 0.70 0.80 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 3 ° MT1117 Sirectifier Global Corp., Delaware, U.S.A. China: st@sirectsemi.com … Thailand: th@sirectsemi.com Philippines: aiac@sirectsemi.com Belize: belize@sirectsemi.com