GM11121 1A LOW DROPOUT PRECISION VOLTAGE REGULATOR Description Features The GM1112 is a positive low dropout regulator and is available in an adjustable version and fixed output voltage at 1.2V. All internal circuitry is designed to operate down to 800mV input to output differential and the dropout voltage is fully specified as a function of load current. On chip trimming adjusts the reference/output voltage to within ± 1%. Current limit is also trimmed in order to minimize the stress on both the regulator and the power source circuitry under overloaded conditions. Fixed Output, 1.2V Output Current of 1.0A Dropout Voltage 1.3V max @ 1.0A Line Regulation 0.2% max. Load Regulation 0.4% max. Fast Transient Response Current Limit Protection Thermal Shutdown Protection Application High Efficiency Linear Regulators Battery Powered Equipment Post Regulators for Switching Supplies Reference Voltage Sources Microprocessor Supply Hard Drive Controllers Battery Chargers Adjustable Power Supply Typical Application Circuits VOUT GM1112 C1 10µF C2 10µF GM1112V1.03 VIN www.gammamicro.com.tw 1 GM1112 2 1A LOW DROPOUT PRECISION VOLTAGE REGULATOR Marking Information and Pin Configurations (Top View) TO 252 (D-PAK) TO 220 GM1112 AYWW TO 263 (D2-PAK) 3. VIN 2. VOUT GM1112 AYWW 1. Gnd 3. VIN 2. VOUT 1. Gnd 3. VIN 2. VOUT 1. Gnd 3. VIN 2. VOUT 1. Gnd GM1112V1.03 GM1112 AYWW GM1112 AYWW A: Assembly / Test site code Y: Year WW: Week 2 SOT223 GM11123 1A LOW DROPOUT PRECISION VOLTAGE REGULATOR Ordering Information Ordering Number Package Shipping GM1112ST3T SOT-223 80 Units/Tube GM1112ST3R SOT-223 2,500 Units / Tape & Reel GM1112TC3T TO-252 80 Units/Tube GM1112TC3R TO-252 2,500 Units / Tape & Reel GM1112TB3T TO-220 50 Units/Tube GM1112TA3T TO-263 50 Units/Tube GM1112TA3R TO-263 800 Units / Tape & Reel Absolute Maximum Ratings PARAMETER SYMBOL RATINGS UNITS Input Voltage VIN 15 V SOT-223 TO-252 (D PAK) θJA TO-263 (D2 PAK) 6.0 ℃/W 3.0 Operating Junction Temperature TJ 0 to 150 ℃ Storage Temperature Tstg - 65 to 150 ℃ GM1112V1.03 Thermal Resistance, Junction to Case 15.0 3 GM1112 4 1A LOW DROPOUT PRECISION VOLTAGE REGULATOR Electrical Characteristics (TA = 25℃, unless otherwise noted) Parameter Output Voltage Symbol VOUT GM1112V1.03 Min Typ Max IOUT =10mA, VIN = 5V 1.18 1.20 1.26 10mA ≤ IOUT ≤ 1.0A, 2.65V ≤ VIN ≤ 7V 1.17 1.20 1.27 Unit V Line Regulation ∆VOI IOUT =10mA, 2.75V ≤ VIN ≤ 7V 0.04 0.2 %/V Load Regulation ∆VOL VIN = VOUT + 1V 10mA ≤ IOUT ≤ 1.0A 0.2 0.4 %/mA Dropout Voltage ∆V IOUT =1A 1.15 1.3 V Current Limit ICL VIN = VOUT + 3V Quiescent Current (Fixed Output Voltage Versions) IQ VIN = VOUT + 1V 10mA ≤ IOUT ≤ 1.0A Temperature Coefficient 4 Condition 1.1 3.1 7 A 13 mA VIN = VOUT + 1.5V IOUT = 10mA 0.005 %/℃ 0.003 %/W 75 dB Thermal Regulation TC TA=25°C, 30ms pulse Ripple Rejection RA VIN = VOUT + 1.5V IOUT = 10mA 60 GM11125 1A LOW DROPOUT PRECISION VOLTAGE REGULATOR Application Information Stability Considerations A capacitor of 10uF as a minimum is suggested to be connected in the input terminal and to be as close as to the input source for better stability consideration. See typical application circuit page 1 for reference. The output compensation capacitor helps to determine three main characteristics of a linear regulator's performance: start-up delay, load transient response, and loop stability. The capacitor value and type is based on cost, availability, size and temperature constraints. A tantalum or aluminum electrolytic capacitor is preferred, as a film or ceramic capacitor with almost zero ESR can cause instability. An aluminum electrolytic capacitor is the least expensive type, but when the circuit operates at low temperatures, both the value and ESR of the capacitor will vary widely. For optimum performance over the full operating temperature range, a tantalum capacitor is best. A 22µF tantalum capacitor will work fine in most applications, but with high current regulators such as the GM1112, higher capacitance values will improve the transient response and stability. Most applications for the GM1112 involve large changes in load current, so the output capacitor must supply instantaneous load current. The ESR of the output capacitor causes an immediate drop in output voltage given by: △V = △I X ESR GM1112V1.03 In microprocessor applications an output capacitor network of several tantalum and ceramic capacitors in parallel is commonly used. This reduces overall ESR and minimizes the instantaneous output voltage drop under transient load conditions. The output capacitor network should be placed as close to the load as possible for the best results. 15 GM1112 6 1A LOW DROPOUT PRECISION VOLTAGE REGULATOR Package Outline Dimensions – SOT223 0.248 - 0.264 (6.30 - 6.71) 0.010 - 0.014 (0.25 - 0.36) 0.116 - 0.124 (2.95 - 3.15) 0.130 - 0.146 (3.30 - 3.71) 0.264 - 0.287 (6.71 - 7.29) 10°- 16 ° 0.071 (1.8) MAX 0.0008 - 0.0040 (0.0203 - 0.1016) 10 - 16 ° 0.012 (0.31) 0.090 (2.29) 0.033 - 0.041 (0.84 - 1.04) NOM MIN ° 0.025 - 0.033 (0.64 - 0.84) 0.81 (4.6)NOM 10° MAX NOM Package Outline Dimensions – TO252 0.039 – 0.050 (1.020 – 1.270) 0.205 – 0.215 (5.210 – 5.460) 0.055 – 0.080 (1.400 – 2.030) 0.018 – 0.023 (0.460 – 0.580) SEATING PLAN 0.370 – 0.410 (9.400 – 10.420) 0.210 – 0.228 (5.330 – 5.800) GM1112V1.03 0.090 (2.285) TYP 6 0.180 (4.570) TYP 0.045 – 0.060 (1.150 – 1.520) 0.030 – 0.045 (0.760 – 1.140) 0.020 (0.510) MIN 0.018 – 0.023 (0.460 – 0.580) GM11127 1A LOW DROPOUT PRECISION VOLTAGE REGULATOR Package Outline Dimensions – TO263 0.390 - 0.415 (9.906 - 10.541) 0.105 - 0.180 (4.191 - 4.572) 0.060 (1.524) TYP 0.045 - 0.055 (1.143 - 1.397) 15 TYP 0.330 - 0.370 (8.382 - 9.398) 0.059 (1.499) TYP 0.143 + 0.012 0.143 - 0.002 (3.632 + 0305) (3.362 - 0.508) 0.050 +/- 0.012 (1.270 +/- 0.305) 0.020 - 0.039 (0.510 - 0.990) 0.013 - 0.023 (0.330 - 0.584) 0.050 (1.270) GM1112V1.03 0.090 - 0.110 (2.286 - 2.794) 7 GM1112 8 1A LOW DROPOUT PRECISION VOLTAGE REGULATOR Ordering Number GM 1112 ST3 GM1112V1.03 APM Gamma Micro 8 Circuit Type R Package Type Shipping Type ST3: TA3: TB3: TC3: R: Taping & Reel T: Tube SOT223 TO263 TO220 TO252