EZ1082 10.0A Positive Voltage Regulator POWER MANAGEMENT Description Features u u u u The EZ1082 is a high performance positive voltage regulator designed for use in applications requiring low dropout performance at 10A. Additionally, the EZ1082 provides excellent regulation over variations in line, load and temperature. u u u u u Features include 1.3V dropout at 10A, fast transient response, internal current limiting and thermal shutdown protection of the output device. The EZ1082 series are three terminal regulators with fixed and adjustable voltage options available in the popular TO-220 package. Low dropout performance, 1.3V max. Full current rating over line and temperature Fast transient response ±2% total output regulation over line, load and temperature Adjust pin current max 90µA over temperature Fixed/adjustable output voltage Line regulation typically 0.015% Load regulation typically 0.05% TO-220 3 pin package Applications The EZ1082 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 with no ripple to the load. u u u u u u u High current microprocessor supplies Post regulators Microprocessor systems Medical equipment Embedded systems Post regulation for switching supplies Telecommunication systems Typical Application Circuit Fixed Voltage Regulator U1 3 VIN > 4.75V + IN EZ1082-3.3 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 EZ1082 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, December 2000 1 R2 VOUT = VREF • 1 + + I ADJ • R 2 R1 www.semtech.com EZ1082 POWER MANAGEMENT Absolute Maximum Ratings Parameter Sy mbol Maximum U nits Input Supply Voltage VIN 7 V Power D i ssi pati on PD Internally Li mi ted W Thermal Resi stance Juncti on to C ase q JC 1.6 °C /W Thermal Resi stance Juncti on to Ambi ent q JA 50 °C /W Operati ng Juncti on Temperature Range TJ 0 to 125 °C Storage Temperature Range TSTG -65 to 150 °C Lead Temperature (Solderi ng) 10 Sec. TLEAD 300 °C Electrical Characteristics Unless otherwise specified: Adj. VIN = 2.75V to 7.0V and Adj. IO = 10mA to 10.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 10.0A Parameter Output Voltage (1) Sy mbol VIN IO TJ(4) Min Ty p Max U nits VO 5V OmA 25°C 0.99lVOl VO 1.01lVOl V O.T. 0.98lVOl VO 1.02lVOl 25°C 1.238 1.250 1.262 O.T. 1.225 1.250 1.275 25°C 0.015 0.2 O.T. 0.035 0.2 25°C 0.05 0.3 O.T. 0.2 0.4 25°C 1.2 O.T. 1.2 Fi xed Voltage Versi on Reference Voltage (1) VREF 5V 10mA Adj Voltage Versi on Li ne Regulati on (1) Load Regulati on (1) D ropout Voltage REG(LINE) REG(LOAD) 10mA 5V VD DVOUT, DVREF = 1% C urrent Li mi t ICL Qui escent C urrent Fi xed Voltage Versi on IQ Temperature C oeffi ci ent TC ã 2000 Semtech Corp. O.T. 5V 2 10.0 12 O.T. 0.005 % % V 1.3 12 O.T. V A 14 mA %/°C www.semtech.com EZ1082 POWER MANAGEMENT Electrical Characteristics (Cont.) Parameter Adjust Pi n C urrent Sy mbol VIN IO TJ(4) IADJ Min 25°C Ty p 55 O.T. Adjust Pi n C urrent C hange DIADJ Temperature Stabi li ty TS 5V Mi ni mum Load C urrent Adj Voltage Versi on IO 5V RMS Output Noi se(2) VN Ri pple Rejecti on Rati o(3) RA 5V 0.5A 10.0A Max U nits µA 90 O.T. 0.2 O.T. 0.5 O.T. 5 25°C 0.003 %VO 72 dB O.T. 60 5 µA % 10 mA NOTES: (1) Low duty cycle pulse testing with Kelvin connections required. (2) Bandwidth of 10 Hz to 10 kHz. (3) 120 Hz input ripple (CADJ for ADJ = 25µF). (4) Over Temp. (O.T.) = over specified operating junction temperature range. ã 2000 Semtech Corp. 3 www.semtech.com EZ1082 POWER MANAGEMENT Pin Configuration Ordering Information D ev ice(1)(2) EZ1082C T-X.X P ackag e TO-220 Notes: (1) Where X.X denotes voltage options. Available voltages are: 2.5V and 3.3V. Leave blank for adjustable version (1.3 to 5.7V). Contact factory for additional voltage options. (2) Only available in tube packaging. A tube contains 50 devices. Block Diagram ã 2000 Semtech Corp. 4 www.semtech.com EZ1082 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 ã 2000 Semtech Corp. 5 www.semtech.com