SPX29151U5-L-3-3

SPX29150/51/52/53 1.5A Low Dropout Voltage Regulator FEATURES ■ Adjustable Output Down to 1.25V ■ 1% Output Accuracy ■ Output Current of 1.5A ■ Low Dropout Voltage of 390mV @ 1.5A ■ Extremely Tight Load and Line Regulation ■ Extremely Fast Transient Response ■ Reverse-Battery Protection ■ Zero Current Shutdown (5 pin version) ■ Error Flag Signal Output for Out of Regulation State (5 pin version) ■ Standard TO-220 and TO-263 Packages APPLICATIONS ■ Powering VGA and Sound Cards ■ LCD Monitors ■ USB Power Supplies ■ PowerPC™ Supplies ■ SMPS Post Regulators ■ High-efficiency “Green” Computer Systems ■ High-efficiency Linear Power Supplies ■ Portable Instrumentation ■ Constant Current Regulators ■ Adjustable Power Supplies ■ Battery Chargers DESCRIPTION The SPX29150/51/52/53 are 1.5A, highly accurate voltage regulators with a low dropout voltage of 390mV (typical) @ 1.5A. These regulators are specifically designed for low voltage applications that require a low dropout voltage and a fast transient response. They are fully fault protected against over-current, reverse battery, and positive and negative voltage transients. On-chip trimming adjusts the reference voltage to 1% initial accuracy. Other features in the 5 pin versions include Enable and Error Flag. The SPX29150/51/52/53 is offered in 3-pin and 5-pin TO-220 & TO-263 packages. For a 3A version, refer to the SPX29300 data sheet. TYPICAL APPLICATION CIRCUITs VIN + 6.8µ F 1 SPX29150 3 2 VOUT + VIN + 6.8µ F 10µ F 1 SPX29152 4 2 3 5 ADJ VOUT + R1 10µ F GND R2 Figure 1. Fixed Output Linear Regulator REV B 06/05/08 Figure 2. Adjustable Output Linear Regulator SP29150/51/52/53 1.5A Low Dropout Voltage Regulator 1 © Copyright 2008 Exar Corporation ABSOLUTE MAXIMUM RATINGS Storage Temperature Range ........................-65°C to +150°C Operating Junction Temperature Range...... -40°C to +125°C Input Voltage (Note 7)......................................................16V ELECTRICAL CHARACTERISTICS at VIN=VOUT + 1V and IOUT = 10mA, CIN = 6.8µF, COUT = 10µF, TA = 25°C, unless otherwise specified. The Boldface applies over the junction temperature range. Adjustable versions are set to 5.0V. SPX29150/51 PARAMETER CONDITIONS Typ Units Min Max 1.8V Version IOUT = 10mA 1.8 1.782 1.818 Output Voltage V 10mA ≤ IOUT ≤ 1.5A, 2.5V ≤ VIN ≤ 16V 1.8 1.764 1.836 2.5V Version IOUT = 10mA 2.5 2.475 2.525 Output Voltage V 10mA ≤� ��IOUT≤������������� 1.5A, 3.5V�� ≤� VIN ≤��� 16V 2.5 2.450 2.550 3.3V Version IOUT = 10mA 3.3 3.267 3.333 Output Voltage V 10mA ≤� ��IOUT≤������������� 1.5A, 4.3V�� ≤� VIN ≤��� 16V 3.3 3.234 3.366 5.0V Version IOUT = 10mA 5.0 4.950 5.050 Output Voltage V 10mA ≤� ��IOUT≤������������� 1.5A, 6.0V�� ≤� VIN ≤��� 16V 5.0 4.900 5.100 All Voltage Options SPX29150/51/52/53 Line Regulation IO = 10mA, (VOUT + 1V) ≤�� ��� VIN ≤���� 16V 0.1 0.5 % VIN = VOUT + 1V, 10mA ≤ IOUT≤ IFULLLoad Regulation 0.2 1 % LOAD ∆V ∆T Dropout Voltage (Note 1) (except 1.8V version) Ground Current (Note 3) IGNDDO Ground Pin Current at Dropout Current Limit Output Noise Voltage (10Hz to 100kHz) IL = 100mA Reference Voltage Output Voltage Temperature Coefficient 13 100 IO = 100mA IO = 750mA IO = 1.5A IO = 750mA, VIN = VOUT, +1V IO = 1.5A VIN = 0.1V less than specified VOUT IOUT = 10mA VOUT = 0.0V (Note 2) CL = 10µF 70 230 390 12 45 200 CL = 33µF Adjustable version only 260 25 mA mA 1.7 A µVRMS 1.240 Reference Voltage Adjustable version only (Note 8) Adjust Pin Bias Current Reference Voltage Temperature (Note 4) Coefficient Adjust Pin Bias Current Temperature Coefficient Flag Output (Error Comparator) SPX29151/53 40 1.252 1.265 1.277 80 120 V nA ppm/°C 0.1 nA/°C VOH=16V 0.1 Output Low Voltage Device set for 5V, VIN=4.5V, IOL=250µA 200 SP29150/51/52/53 1.5A Low Dropout Voltage Regulator  1.228 1.215 1.203 13 Output Leakage Current Rev B 06/05/08 mV 600 0.9 2.2 400 ppm/°C 1.00 2.00 300 400 UA mV © Copyright 2008 Exar Corporation ELECTRICAL CHARACTERISTICS cont'd PARAMETER CONDITIONS Typ SPX29150/51 Min Max 40 25 Upper Threshold Voltage Device set for 5V (Note 5) 60 Lower Threshold Voltage Device set for 5V (Note 5) 75 Hysteresis Device set for 5V (Note 5) 15 Units mV 95 140 mV mV ENABLE input SPX29151/52 Input Logic Voltage Low (OFF) High (ON) Enable Input Pin Input Current VIN < 10V 2.4V VEN=16V 100 VEN=0.8V Regulator Output Current in Shutdown Thermal Resistance (Note 6) 10 TO-220 Junction to Case, at Tab TO-220 Junction to Ambient 3 30 TO-263 Junction to Case, at Tab TO-263 Junction to Ambient 3 32 0.8 V 600 750 µA 1 2 µA 500 µA °C/W NOTES: Note 1: Dropout voltage is defined as the input to output differential when the output voltage drops to 99% of its nominal value. Note 2: VIN = VOUT (NOMINAL) +1V. For example, use VIN = 4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize temperature rise. Note 3: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current to the ground current. Note 4: Thermal regulation is defined as the change in the output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation effects. Note 5: Comparator threshold is expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage measured 6V input. To express these thresholds in terms of output voltage change, multiply the error amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmable output voltage of 5V, the Error output is guaranteed to go low when the output drops by 95mVx 5V/ 1.240V = 38mV. Thresholds remain constant as a percent of VOUT as VOUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed. Note 6: VEN ≤ 0.8V and VIN ≤ 16V, VOUT = 0. Note 7: Maximum positive supply voltage of 20V must be of limited duration (