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| SS6084 5A Low-dropout Positive Linear Regulator FEATURES Dropout voltage 1.3V at 5A o utput current. Fast transient response. Extremely tight line and load regulation. Current limiting and thermal protection. Adjustable o utput voltage or fixed at 1.5V, 1.8V, 2.5V, 3.3V. Standard 3-pin power packages. DESCRIPTION The SS6084 is a low -dropout three -terminal linear regulator with 5A output current capability. The output voltage is adjustable with a resistor divider or fixed at 1.5V, 1.8V, 2.5V or 3.3V . Dropout voltage is guaranteed to be a maximum of 1.4V at the maximum output current. This low dropout voltage and fast transient response make the SS6084 ideal for low - voltage microprocessor applications. Current and thermal limiting provide protection against overload conditions that would create excessive junction temperatures. APPLICATIONS Motherboard I/O Power Supplies. Microprocessor Power Supplies. High -Current Regulators. Post-regulator for Switching Supplies . TYPICAL APPLICATION CIRCUIT VIN 5V 3 SS6084 2 V REF VOUT 3.3V 1 ADJ C1 + 10F RF1 125 + 1% C2 RF2 10F 205 1% VREF=VOUT -VADJ=1.25V (typ. ) VOUT=V REF x (1+RF2/RF1)+ IADJ x RF2 IADJ=55 A (typ.) (1) C1 is needed if the device is physically far from the filter capacitors. (2) C2 is required for stability. Adjustable Voltage Regulator VIN 5V 3 SS6084-33 2 VOUT 3.3V 1 C1 + 10F GND + C2 10F Fixed Voltage Regulator Rev.2.02 4/06/2004 www.SiliconStandard.com 1 of 7 SS6084 ORDERING INFORMATION SS608 4- XXCXXX Packing type TB: tubes TR: tape and reel Package type E: TO- 252 M: TO-263 T: TO -220 Output voltage Default : adjustable 15: 1.5V 18: 1.8V 25: 2.5V 33: 3.3V TO-252 TOP VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN PIN CONFIGURATION 1 2 3 TO-263 TOP VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN 1 2 3 TO-220 FRONT VIEW 1: ADJ (GND) 2: VOUT (TAB) 3: VIN 1 2 3 Example: SS6084 -15CETR a 1.5V fixed output in TO -252 shipped in tape and reel ABSOLUTE MAXIMUM RATINGS VIN pin to ADJ/GND pin Operating Junction Temperature Range Storage Temperature Range Thermal Resistance Junction to Case TO-252 TO-263, TO -220 Thermal Resistance Junction to Ambient TO-252 TO-220 Lead Temperature (Soldering) 10 sec. (Assume no ambient airflow, no heatsink) TO-263 7V 0C~ 125C - 65C ~ 150C 12.5C/W 3C /W 100C/W 60C /W 50C /W 260C Rev.2.02 4/06/2004 www.SiliconStandard.com 2 of 7 SS6084 TEST CIRCUIT Refer to TYPICAL APPLICATION CIRCUIT. ELECTRICAL CHARACTERISTICS (V IN=5V, TJ=25 C, IO=10mA, unless otherwise specified) PARAMETER Reference Voltage TEST CONDITIONS SS6084 (ADJ) TJ=25 C SS6084 -15, VIN=5V Output Voltage SS6084 -18, VIN=5V SS6084 -25, VIN=5V SS6084 -33, VIN=5V ADJ : 2.65V VIN 7V Line Regulation VOUT=1.25V Fix : VOUT+1.4V VIN 7V TJ=25 C Load Regulation 10mA < IO < 5A TJ=25 C VOUT, VREF=1% Dropout Voltage Current Limit Adjusted Pin Current Adjusted Pin Current Change (IADJ) Temperature Stability Minimum Load Current RMS Output Noise (% of VOUT) Ripple Rejection Ratio 10mA IO 5A 0C TJ 125 C 0C TJ 125 C 2.65V VIN 7V 2. 65V VIN 7V 0C TJ 125 C IO=0.5A 0C TJ 125 C 0C TJ 125 C 10Hz f 10KHz 120Hz input ripple COUT=25F (V IN -VOUT )=3V 60 72 dB 5 6 55 0.2 0.5 5 0.003 10 120 5 A A A % mA % 1.3 1.4 V 0.6 % 0.015 0.2 % MIN. 1.238 1.48 1.78 2.47 3.26 TYP. 1.25 1.50 1.80 2.50 3.30 MAX. 1.262 1.52 1.82 2.53 3.34 V UNIT V Rev.2.02 4/06/2004 www.SiliconStandard.com 3 of 7 SS6084 BLOCK DIAGRAM VIN + GM V REF + 1.25V Current Amp. - Thermal Limit 55A Current Limit VOUT For fixed voltage device ADJ GND PIN DESCRIPTIONS ADJ PIN Providing VREF=1.25V (typ.) for adjustable VOUT. VREF =VOUT-VADJ and IADJ=55A (typ.) GND PIN- Power ground. VOUT PIN VIN PIN Adjustable output voltage. Power Input. TYPICAL PERFORMANCE CHARACTERISTICS Output Voltage (V, AC) 0.4 0.2 0 -0.2 -0.4 Output Voltage (mV, AC) 50 0 -50 Input Voltage (V) Load Current VIN=5.0V CIN=1F(Tantalum) COUT =10F(Tantalum) VOUT=3.3V -100 CIN=1F (Tantalum) COUT =10F (Tantalum) VOUT=3.3V 7.0 6.0 2.5A 0.1A 0 20 40 60 80 100 0 40 80 120 160 200 Fig. 1 Time (S) Load Transient Response Fig. 2 Time (S) Line Transient Response Rev.2.02 4/06/2004 www.SiliconStandard.com 4 of 7 SS6084 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) 1.35 Minimum Operating Current (mA) 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 1 2 3 4 5 Minimum differential Voltage (V) 1.30 1.25 1.20 1.15 1.10 1.05 0 1 2 3 4 5 Fig. 3 5 Output Current (A) Dropout Voltage (V OUT=3.3V) 8 7 Differential Voltage (V) Fig. 4 Minimum Operating Current Minimum Operating Current (mA) 4 Short Circuit Current (A) 1 2 3 4 5 6 7 8 9 6 5 4 3 2 1 3 2 1 0 0 1 2 3 4 5 6 7 Differential Voltage (V) Fig. 5 Minimum Operating Current VIN-VOUT (V) Fig. 6 SS6084 (A DJ.) Short Circuit Current -20 Ripple Rejection Ratio (dB) -30 -40 C OUT=3.3F -50 COUT=10F -60 -70 COUT=25F -80 1 10 2 10 3 10 4 10 5 10 6 10 7 10 Frequency (Hz) Fig. 7 SS6084 (ADJ.) Ripple Rejection Rev.2.02 4/06/2004 www.SiliconStandard.com 5 of 7 SS6084 PHYSICAL DIMENSIONS l TO-220 (unit: mm) A E F 3.810.27 SYMBOL A D E e e1 e2 F J1 L MIN 3.56 14.23 9.66 2.29 0.50 0.51 2.04 12.70 MAX 4.82 16.51 10.66 2.79 1.15 1.10 1.39 2.92 14.73 D L e1 J1 e e2 l TO-252 (unit: mm) E b2 C1 A SYMBOL A A1 b MIN 2.19 1.02 0.64 5.21 0.46 5.33 6.35 2.28 (TYP.) 9.40 0.51 MAX 2.38 1.27 0.88 5.46 0.58 5.59 6.73 D H b2 C1 D E L e H b e A1 10.42 - L Rev.2.02 4/06/2004 www.SiliconStandard.com 6 of 7 SS6084 PHYSICAL DIMENSIONS (cont.) l TO-263 (unit: mm) E A SYMBOL A C2 MIN 4.06 0.50 1.14 1.14 8.63 9.65 MAX 4.83 1.00 1.40 0.7 1.40 9.66 10.29 L2 b b2 C L D L1 c2 D E e e C 2.54 (TYP.) 14.60 2.28 15.88 2.80 1.40 b2 b L L1 L2 Information furnished by Silicon Standard Corporation is believed to be accurate and reliable. However, Silicon Standard Corporation makes no guarantee or warranty, express or implied, as to the reliability, accuracy, timeliness or completeness of such information and assumes no responsibility for its use, or for infringement of any patent or other intellectual property rights of third parties that may result from its use. Silicon Standard reserves the right to make changes as it deems necessary to any products described herein for any reason, including without limitation enhancement in reliability, functionality or design. No license is granted, whether expressly or by implication, in relation to the use of any products described herein or to the use of any information provided herein, under any patent or other intellectual property rights of Silicon Standard Corporation or any third parties. Rev.2.02 4/06/2004 www.SiliconStandard.com 7 of 7 |
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