EZ1084BC, EZ1084C & EZ1084I 5 Amp Positive Voltage Regulator POWER MANAGEMENT Description Features K Low dropout voltage: 1.3V max. for EZ1084C, The EZ1084 series of high performance positive voltage regulators are designed for use in applications requiring low dropout performance at up to 5A. Additionally, the EZ1084 series provides excellent regulation over variations in line, load and temperature. 1.4V max. for EZ1084I, 1.45V max. for EZ1084BC K Full current rating over line and temperature K Fast transient response K ±2% total output regulation over line, load and 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 A variety of options are available for maximum flexibility: K the EZ1084C has both fixed and adjustable voltage K options and is designed for use in commercial applications; the EZ1084BC is adjustable only for cost sensitive commercial applications; the EZ1084I is adjustable only for industrial applications. temperature (±2.4% for EZ1084BC) Adjust pin current max 90µA over temperature Fixed/adjustable output voltage (EZ1084C) Line regulation typically 0.015% Load regulation typically 0.05% Industrial temperature range (EZ1084I) TO-220 and TO-263 packages Applications K K K K K K K All devices are available in the popular TO-220 and TO-263 packages. Typical Application Circuit Printer and plotter supplies Instrumentation Medical equipment Microcontroller systems Telecommunication systems Motherboards Switching supply post regulation Fixed Voltage Regulator U1 3 VIN > 4.75V + IN EZ1084C-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 EZ1084 TAB OUT 2 VOUT = 3.45V R1 133 Ohm, 1% ADJ + C2 10uF Tant. Min 1 R2 232 Ohm, 1% Notes: (1) C1 needed if device is far from filter capacitors (2) C2 minimum value required for stability Revision 1, March, 2001 1 R2 VOUT = VREF • 1 + + I ADJ • R 2 R1 www.semtech.com EZ1084BC, EZ1084C & EZ1084I 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 TO-220 TO-263 θJ C 2.5 2.5 °C/W Thermal Resistance Junction to Ambient TO-220 TO-263 θJ A 50 60 °C/W Operating Ambient Temperature Range EZ1084BC, EZ1084C EZ1084I TA 0 to 70 -40 to 85 °C Operating Junction Temperature Range EZ1084BC, EZ1084C EZ1084I 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 5A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 5A. 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 EZ1084C-X.X Reference Voltage 0.98lVOl (1) VREF 5V 10mA EZ1084C, EZ1084I Reference Voltage (1) 1.238 1.02lVOl 1.250 1.225 VRE 5V 10mA EZ1084BC 1.233 REG(LINE) Load Regulation (1) REG(LOAD) 1.250 1.267 V 1.280 0.045 0.2 % 0.15 0.4 % 1.20 1.30 V EZ1084I 1.20 1.40 EZ1084BC 1.20 1.45 Dropout Voltage(1)(2) EZ1084C, EZ1084C-X.X Current Limit 2001 Semtech Corp. 10mA V 1.275 1.220 Line Regulation (1) 1.262 5V VD 5A 5.0 ICL 2 7.5 A www.semtech.com EZ1084BC, EZ1084C & EZ1084I POWER MANAGEMENT Electrical Characteristics (Cont) Unless otherwise specified: Adj. VIN = 2.75V to 7.0V and Adj. IO = 10mA to 5A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 5A. Values in bold apply over full operating ambient temperature range. Parameter Symbol VIN Quiescent Current Fixed Voltage Version 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 14 mA 0.5 5 5A %/°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 EZ1084BC, EZ1084C & EZ1084I POWER MANAGEMENT Pin Configurations Ordering Information Device(1)(2) P ackag e EZ1084BCM.TR EZ1084CM-X.X.TR EZ1084IM.TR TO-263(3) EZ1084BCT EZ1084CT-X.X EZ1084IT TO-220(4) Notes: (1) Where X.X denotes voltage options (EZ1084C only). Available voltages are: 1.5V, 2.5V and 3.3V. Leave blank for adjustable version (1.3 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 tape and reel packaging. A reel contains 800 devices. (4) 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 EZ1084BC, EZ1084C & EZ1084I POWER MANAGEMENT Outline Drawing - TO-220 Outline Drawing - T0-263 2001 Semtech Corp. 5 www.semtech.com EZ1084BC, EZ1084C & EZ1084I POWER MANAGEMENT Land Pattern - TO-263 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. 6 www.semtech.com