EZ1588 2.0A Low Dropout Positive Voltage Regulators POWER MANAGEMENT Description Features The EZ1588 is a high performance positive voltage regulator designed for use in applications requiring low dropout performance at 2A. Additionally, the EZ1588 series provides excellent regulation over variations in line, load and temperature. u u u u Outstanding features include low dropout performance at rated current, fast transient response, internal current limiting and thermal shutdown protection of the output device. u u u u u The EZ1588 series are three terminal regulators with fixed and adjustable voltage options available in popular packages. Applications u u u u u u 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 0.005% Load regulation typically 0.05% TO-220 or TO-263 packages Memory supplies Graphics core supplies 2.5V to 3.6V microprocessor supplies Low voltage logic supplies Battery-powered circuitry Post regulator for switching supply Typical Application Circuit Fixed Voltage Regulator U1 3 VIN > 4.75V + IN EZ1588-3.3 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 EZ1588 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, November 2000 1 R2 VOUT = VREF • 1 + + I ADJ • R 2 R1 www.semtech.com EZ1588 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 TO-220 TO-263 q JC 3 3 °C /W Thermal Resi stance Juncti on to Ambi ent TO-220 TO-263 q JA 50 60 °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 ESD Rati ng (Human Body Model) V ESD 2 kV Electrical Characteristics Unless otherwise specified: Adj. VIN = 2.75 to 7.0V and Adj. IO = 10mA to 2.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0mA to 2.0A Parameter Output Voltage (1) Sy mbol VIN IO TJ(4) Min Ty p Max U nits VO 5V 0mA 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 0.005 0.2 O.T. 0.035 0.2 25°C 0.05 0.3 O.T. 0.2 0.4 25°C 1 O.T. 1.1 Fi xed Voltage Versi on Reference Voltage (1) VREF 5V 10mA Adj. Voltage Versi on Li ne Regulati on (1) REG(LINE) Fi xed Voltage Versi on 0mA Adj. Voltage Versi on 10mA Load Regulati on (1) D ropout Voltage (2) REG(LOAD) VD C urrent Li mi t ICL Qui escent C urrent Fi xed Voltage Versi on IQ Termperature C oeffi ci ent TC ã 2000 Semtech Corp. 5V O.T. 5V 2 2.0 V % % V 1.3 2.5 A O.T. 10 13 mA O.T. 0.004 0.02 %/°C www.semtech.com EZ1588 POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise specified: Adj. VIN = 2.75 to 7.0V and Adj. IO = 10mA to 2.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0mA to 2.0A Parameter Sy mbol Adjust Pi n C urrent VIN IO TJ(4) Min 25°C IADJ 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(3) VN Ri pple Rejecti on Rati o (4) RA 5V 0.5A 2.0A 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) DVOUT, DVREF = 1% (3) Bandwidth of 10 Hz to 10 kHz. (4) 120 Hz input ripple, (CADJ for ADJ = 25µF). (5) Over Temp. (O.T.) = over specified operating junction temperature range. ã 2000 Semtech Corp. 3 www.semtech.com EZ1588 POWER MANAGEMENT Pin Configuration Ordering Information D ev ice(1) P ackag e EZ1588C T-X.X TO-220 EZ1588C M-X.X.TR TO-263(2) Notes: (1) Where X.X denotes voltage options. Available voltages are: 3.3V. Leave blank for adjustable version (1.3 to 5.7V). Contact factory for additional voltage options. (2) Only available in tape and reel packaging. A reel contains 800 devices. Block Diagram Outline Drawing - TO-220 ã 2000 Semtech Corp. 4 www.semtech.com EZ1588 POWER MANAGEMENT Outline Drawing - TO-263 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 ã 2000 Semtech Corp. 5 www.semtech.com