LM1501BT-12-5L

5.0A, 300kHz, Step-down Switching Regulator FEATURES 3.3V, 5V, 12V, and adjustable output versions Adjustable version output voltage range, 1.23V to 37V ± 3% max over line and load conditions Guaranteed 5A output load current Input voltage range up to 40V Requires only 4 external components 300kHz ±15% fixed frequency internal oscillator Excellent line and load regulation specifications Low power standby mode, IQ typically 80uA Thermal shutdown and current limit protection TO-263 PKG LM1501B TO-220 PKG APPLICATION Simple high-efficiency step-down regulator On-card switching regulators Positive to negative converter Ordering Information Device LM1501BR-X.X LM1501BT-X.X X.X = Output Voltage = 3.3, 5.0, 12, ADJ PKG TO-263 5L TO-220 5L DESCRIPTION The LM1501B series of regulators are monolithic integrated circuits that provide all the active functions for a step-down switching regulator, capable of driving a 5A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use. The LM1501B series operates at a switching frequency of 300kHz. Available in standard 5-lead TO-263 and TO-220 packages. Other features include a guaranteed ±3% tolerance on output voltage under specified input voltage and output load conditions, and ± 15% on the oscillator frequency. External shutdown is included, featuring typically 80uA standby current. Self protection features include a current limit for output switch and an over temperature shutdown for complete protection under fault conditions. The over temperature shutdown level is about 145℃ with 5℃ hysteresis. Absolute Maximum Ratings (TA = 25oC) (Note 1) Characteristic Maximum Input Supply Voltage ON/OFF Pin Input Voltage Feedback Pin Voltage Output Voltage to Ground Power Dissipation Storage Temperature Range Operating Temperature Range ESD Susceptibility (Human Body Model) Operating Supply Voltage Symbol VI VIN VFB VO PD Tstg TJ VESD VIN Value 45 -0.3 ≤ V ≤ +25 -0.3 ≤ V ≤ +25 -1 Internally limited -65 to +150 -40 ≤ TJ ≤ +125 2 4.5 to 45 Unit V V V V W o C o C kV V Note 1. Absolute Maximum Rating indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. Mar. 2011 – Ver. 1.2 1 HTC 5.0A, 300kHz, Step-down Switching Regulator Ordering Information VOUT ADJ 3.3V 5.0V 12V Package TO-263 5L TO-220 5L TO-263 5L TO-220 5L TO-263 5L TO-220 5L TO-263 5L TO-220 5L Order No. LM1501BR-ADJ-5L LM1501BT-ADJ-5L LM1501BR-3.3-5L LM1501BT-3.3-5L LM1501BR-5.0-5L LM1501BT-5.0-5L LM1501BR-12-5L LM1501BT-12-5L Description 5A, 300kHz 5A, 300kHz 5A, 300kHz 5A, 300kHz 5A, 300kHz 5A, 300kHz 5A, 300kHz 5A, 300kHz Package Marking LM1501B-ADJ LM1501B-ADJ LM1501B-3.3 LM1501B-3.3 LM1501B-5.0 LM1501B-5.0 LM1501B-12 LM1501B-12 LM1501B Supplied As Reel Tube Reel Tube Reel Tube Reel Tube LM 1501B R – 3.3 V – 5 L Lead Count : 5L Output Voltage : ADJ / 3.3V / 5.0V / 12V Package Type Root Name Product Code R : TO-263 T : TO-220 PIN CONFIGURATION SD FB GND OUTPUT VIN SD FB GND OUTPUT VIN TO-263 5L TO-220 5L PIN DESCRIPTION Pin No. 1 2 3 4 5 TO-263 / TO-220 5 LEAD Name VIN OUTPUT GND FB SD Function Operating Input Voltage Switching Output Voltage Ground Output Voltage Feedback Control ON/OFF Shutdown Mar. 2011 – Ver. 1.2 2 HTC 5.0A, 300kHz, Step-down Switching Regulator Electrical Characteristics LM1501B Unless otherwise specified, TJ=25℃ VIN= 12V for the 3.3V, 5V, and Adjustable version and VIN = 24V for the 12V version. ILOAD = 500mA. Characteristic Symb ol Test Condition LM1501B -ADJ Min Typ 73 73 80 90 Max Unit VOUT = 3V, ILOAD = 5A VIN = 12V, ILOAD = 5A VIN = 12V, ILOAD = 5A VIN = 25V, ILOAD = 5A 4.75V≤VIN≤40V 0.2A≤ILOAD≤5A 7V≤VIN≤40V 0.2A≤ILOAD≤5A 15V≤VIN≤40V 0.2A≤ILOAD≤5A 4.5V≤VIN≤40V 0.2A≤ILOAD≤5A VOUT programmed for 3V 3.20 4.85 11.64 Efficiency η LM1501B-3.3 LM1501B-5 LM1501B-12 LM1501B-3.3 % 3.3 5 12 3.40 5.15 12.36 V Output Voltage VOUT LM1501B-5 LM1501B-12 Feedback Voltage Oscillator Frequency Feedback Bias Current Saturation Voltage Max Duty Cycle (ON) Max Duty Cycle (OFF) Current Limit Output Leakage Current Quiescent Current Standby Quiescent Current ON/OFF Pin Logic Input Threshold voltage VFB fO ID VSAT DC ICL IL IQ ISTBY LM1501B-ADJ 1.180 255 1.215 300 15 1.250 345 50 1.4 kHz nA V % A 50 μA mA mA μA LM1501B-ADJ; VFB=1.215V IOUT = 5A, (Note 2, 3) (Note 3) (Note 4) Peak Current, (Note 2, 3) Output = 0V (Note 2, 4) Output = -1V, VIN=40V (Note 4) ON/OFF pin = 5V(OFF), VIN = 40V 100 0 6.5 2 4.5 80 1.3 30 10 200 VIH VIL Low (Regulator ON) High (Regulator OFF) VLOGIC = 2.5V (regulator OFF) VLOGIC = 0.5V (regulator ON) 2.0 5 0.6 V ON/OFF Pin Logic Input current IH IL 15 5 uA Note 2. No elements connected to output pin Note 3. Feedback pin removed from output and connected to 0V to force the output transistor switch ON. Note 4. Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the A version, and 15V for the 12V version. To force the output transistor switch OFF Mar. 2011 – Ver. 1.2 3 HTC 5.0A, 300kHz, Step-down Switching Regulator TYPICAL APPLICATION LM1501B LM1501B-5.0 TYPICAL OPERATING CHARACTERISTICS T.B.D APPLICATION INFORMAION T.B.D Mar. 2011 – Ver. 1.2 4 HTC