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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 + 10µ F
VOUT
VIN + 6.8µ F
1 SPX29152 4 2 GND 3 5 ADJ
VOUT + R1 10µ F
R2
Figure 1. Fixed Output Linear Regulator
Rev A 8/15/06
Figure 2. Adjustable Output Linear Regulator
© Copyright 2006 Sipex Corporation
SP29150/51/52/53 1.5A Low Dropout Voltage Regulator
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
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
ELECTRICAL CHARACTERISTICS
∆V ∆T Dropout Voltage (Note 1) (except 1.8V version) G.