EZ1584C & EZ1584I 7.0 Amp Low Dropout Positive Voltage Regulators POWER MANAGEMENT Description Features The EZ1584 is a high performance positive voltage regulator designed for use in applications requiring low dropout performance at 7A. Additionally, the EZ1584 series provides excellent regulation over variations in line, load and temperature. K Low dropout performance: 1.3V max. for EZ1584C Outstanding features include low dropout performance at rated current, fast transient response, internal current limiting and thermal shutdown protection of the output device. K K K K K K and 1.4V max. for EZ1584I K Full current rating over line and temperature K Fast transient response K ±2% total output regulation over line, load and The EZ1584 is an excellent choice for powering microprocessor systems. Using an LDO eliminates MOSFETs and inductors, saving both space and cost. An LDO also provides better transient response and no ripple. temperature Adjust pin current max 90µA over temperature Fixed/adjustable output voltage Line regulation typically 0.015% Load regulation typically 0.05% Industrial temperature range (EZ1584I) TO-220 package Applications K K K K K K K K A variety of options are available for maximum flexibility: the EZ1584C is intended for commercial applications and has both fixed and adjustable voltage options; the EZ1584I is intended for industrial applications and has a 3.3V fixed and an adjustable option. All devices are available in the popular TO-220 package. Typical Application Circuit Memory supply Graphics core supply Other 2.5V to 3.6V microprocessor supplies Low voltage logic supplies Battery-powered circuitry Post regulator for switching supply Telecom supplies Industrial supplies Fixed Voltage Regulator U1 3 VIN > 4.75V + IN EZ1584-3.3 2 TAB OUT VOUT = 3.3V + C1 10uF Tant. GND C2 10uF Tant. Min. 1 Adjustable Voltage Regulator U1 3 VIN > 4.75V + C1 10uF Tant. IN EZ1584 TAB OUT 2 VOUT = 3.3V R1 124 Ohm, 1% ADJ + C2 10uF Tant. Min 1 R2 205 Ohm, 1% Notes: (1) C1 needed if device is far from filter capacitors (2) C2 minimum value required for stability Revision 3, July 2001 1 R2 VOUT = VREF • 1 + + I ADJ • R 2 R1 www.semtech.com EZ1584C & EZ1584I POWER MANAGEMENT Absolute Maximum Ratings Parameter Symbol Maximum Units Input Supply Voltage VIN 7 V Power Dissipation PD Internally Limited W Thermal Resistance Junction to Case θJ C 2 °C/W Thermal Resistance Junction to Ambient θJ A 50 °C/W Operating Ambient Temperature Range EZ1584C EZ1584I TA 0 to 70 -40 to 85 °C Operating Junction Temperature Range EZ1584C EZ1584I TJ 0 to 125 -40 to 125 °C Storage Temperature Range TSTG -65 to 150 °C Lead Temperature (Soldering) 10 Sec. TLEAD 300 °C ESD Rating (Human Body Model) ESD 2 kV Electrical Characteristics Unless otherwise specified: Adj. VIN = 2.75V to 7.0V and Adj. IO = 10mA to 7.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 7.0A. Values in bold apply over full operating ambient temperature range. Parameter Output Voltage (1) Symbol VIN IO Min Typ Max Units VO 5V 0mA 0.99lVOl VO 1.01lVOl V 0.98lVOl EZ1584C-X.X, EZ1584I-3.3 Reference Voltage (1) VREF 5V 10mA EZ1584C, EZ1584I REG(LINE) Load Regulation (1) REG(LOAD) 10mA 5V VD 7A EZ1584I, EZ1584I-3.3 Current Limit 2001 Semtech Corp. 1.250 1.225 Line Regulation (1) Dropout Voltage(1)(2) EZ1584C, EZ1584C-X.X 1.238 1.02lVOl 7.1 ICL 2 1.262 V 1.275 0.015 0.2 % 0.05 0.4 % 1.20 1.30 V 1.20 1.40 9.0 A www.semtech.com EZ1584C & EZ1584I POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise specified: Adj. VIN = 2.75V to 7.0V and Adj. IO = 10mA to 7.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 7.0A. Values in bold apply over full operating ambient temperature range. Parameter Symbol VIN Quiescent Current Fixed Voltage Versions IQ 5V Temperature Coefficient TC 0.005 Adjust Pin Current IADJ 55 90 µA ∆IADJ 0.2 5 µA Adjust Pin Current Change Temperature Stability TS 5V Minimum Load Current Adj Voltage Versions IO 5V RMS Output Noise(3) VN Ripple Rejection Ratio(4) RA 5V IO Min 0.5A Typ Max Units 10 13 mA 0.5 5 7A %/°C 60 % 10 mA 0.003 %VO 72 dB NOTES: (1) Low duty cycle pulse testing with Kelvin connections required. (2) ∆VOUT, ∆VREF = 1% (3) Bandwidth of 10 Hz to 10 kHz. (4) 120 Hz input ripple (CADJ for ADJ = 25µF). 2001 Semtech Corp. 3 www.semtech.com EZ1584C & EZ1584I POWER MANAGEMENT Pin Configuration Ordering Information Device(1)(2) P ackag e EZ1584CT-X.X EZ1584IT-X.X TO-220(3) Notes: (1) Where X.X denotes voltage options. Available voltages are: 1.5V, 2.5V and 3.3V for EZ1584C and 3.3V only for EZ1584I. Leave blank for adjustable version (1.3V to 5.7V). Contact factory for additional voltage options. (2) Where C and I denote Commercial (0°C to 70°C) and Industrial (-40°C to 85°C) ambient temperature ranges. (3) Only available in tube packaging. A tube contains 50 devices. Pin Descriptions Pin Pin Name Pin Function 1 ADJUST This pin is the negative side of the reference voltage for adjustable devices. Transient response can be improved by adding a small bypass capacitor from the adjust pin to ground. GROUND This pin is the bottom end of the internal resistor feedback chain for fixed output voltage parts, and should be connected to ground. 2 OUTPUT This is the power output of the device and is electrically connected to the TAB. 3 INPUT This is the input supply pin for both the control circuitry and the pass device. Block Diagram 2001 Semtech Corp. 4 www.semtech.com EZ1584C & EZ1584I POWER MANAGEMENT Outline Drawing - TO-220 Contact Information Semtech Corporation Power Management Products Division 652 Mitchell Rd., Newbury Park, CA 91320 Phone: (805)498-2111 FAX (805)498-3804 2001 Semtech Corp. 5 www.semtech.com