LM1501A HTC | Alldatasheet

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Technical content

5.0A, 150kHz, Step-down Switching Regulator LM1501A Mar. 2011 – Ver. 1.3 1 HTC Absolute Maximum Ratings (TA = 25oC) (Note 1) Characteristic Symbol Value Unit Maximum Input Supply Voltage V I 45 V ON/OFF Pin Input Voltage V IN -0.3 ≤ V ≤ +25 V Feedback Pin Voltage V FB -0.3 ≤ V ≤ +25 V Output Voltage to Ground V O -1 V Power Dissipation P D Internally limited W Storage Temperature Range T stg -65 to +150 oC Operating Temperature Range T J -40 ≤ TJ ≤ +125 oC ESD Susceptibility (Human Body Model) V ESD 2 kV Operating Supply Voltage V IN 4.5 to 45 V Note 1. Absolute Maximum Rating indicate limits beyond which damage to device may occur. Operat ing 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. TO-263 PKG TO-220 PKG

Ordering Information

Device(Marking) PKG LM1501AR-X.X TO-263 5L LM1501AT-X.X TO-220 5L

FEATURES

z 3.3V, 5V, 12V, and adjustable output versions z Adjustable version output voltage range, 1.23V to 37V ± 3% max over line and load conditions z Guaranteed 5A output load current z Input voltage range up to 40V z Requires only 4 external components z 150kHz ±15% fixed frequency internal oscillator z Excellent line and Load regulation specifications z Low power standby mode, I Q typically 80uA z Thermal shutdown and current limit protection APPLICATION z Simple high-efficiency step-down regulator z On-card switching regulators z Positive to negative converter

DESCRIPTION

X.X = Output Voltage = 3.3, 5.0, 12, ADJ The LM1501A series of regulators are m onolithic integrated circuits that pr ovide all the active functions for a step-down switching regulator, capabl e of driving a 5A load with excell ent 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 LM1501A series operates at a switching frequency of 150kHz. Available in standard 5-lead TO-263 and TO-220 package. 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.

5.0A, 150kHz, Step-down Switching Regulator LM1501A Mar. 2011 – Ver. 1.3 2 HTC TO-263 5L LM1501AR-ADJ-5L 5A, 150KHz LM1501A-ADJ Reel ADJ TO-220 5L LM1501AT-ADJ-5L 5A, 150KHz LM1501A-ADJ Tube TO-263 5L LM1501AR-3.3-5L 5A, 150KHz LM1501A-3.3 Reel 3.3V TO-220 5L LM1501AT-3.3-5L 5A, 150KHz LM1501A-3.3 Tube TO-263 5L LM1501AR-5.0-5L 5A, 150KHz LM1501A-5.0 Reel 5.0V TO-220 5L LM1501AT-5.0-5L 5A, 150KHz LM1501A-5.0 Tube TO-263 5L LM1501AR-12-5L 5A, 150KHz LM1501A-12 Reel 12V TO-220 5L LM1501AT-12-5L 5A, 150KHz LM1501A-12 Tube PIN CONFIGURATION TO-263 5L TO-220 5L PIN DESCRIPTION TO-263 / TO-220 5 LEAD Pin No. Name Function

1 V IN Operating Input Voltage

2 OUTPUT Switching Output Voltage

3 GND Ground

4 FB Output Voltage Feedback Control

5 SD ON/OFF Shutdown

: TO-263 : TO-220 R T Lead Count : 5L Output Voltage : ADJ / 3.3V / 5.0V / 12V Package Type Root Name LM 1501A R – 3.3 V – 5 L Product Code SD FB GND OUTPUT VIN SD FB GND OUTPUT VIN

5.0A, 150kHz, Step-down Switching Regulator LM1501A M a r . 2 0 1 1 – V e r . 1 . 3 3 HTC

Electrical Characteristics

Unless otherwise specified, TJ=25℃ VIN= 12V for the 3.3V, 5V, and Adjustable version and V IN = 24V for the 12V version. ILOAD = 500mA. Characteristic Symbol Test Condition Min Typ Max Unit LM1501A -ADJ VoUT = 3V, ILOAD = 5A 73 LM1501A-3.3 V IN = 12V, ILOAD = 5A 73 LM1501A-5 V IN = 12V, ILOAD = 5A 80 Efficiency η LM1501A-12 V IN = 25V, ILOAD = 5A 90 LM1501A-3.3 4.75V ≤ VIN ≤ 40V 0.2A ≤ ILOAD ≤ 5A 3.20 3.3 3.40 LM1501A-5 7V ≤ VIN ≤ 40V 0.2A ≤ ILOAD ≤ 5A 4.85 5.0 5.15 Output Voltage V OUT LM1501A-12 15V ≤ VIN ≤ 40V 0.2A ≤ ILOAD ≤ 5A 11.64 12.0 12.36 V Feedback Voltage V FB LM1501A-ADJ 4.5V ≤ VIN ≤ 40V 0.2A ≤ ILOAD ≤ 5A VOUT programmed for 3V 1.180 1.215 1.250 V Oscillator Frequency f O 127 150 173 kHz Feedback Bias Current ID LM1501A-ADJ; V FB=1.215V 15 50 Saturation Voltage V SAT IOUT = 5A (Note 2,3) 1.4 V (Note 3) 100 Max Duty Cycle (ON) Max Duty Cycle (OFF) DC (Note 4) Current Limit I CL Peak Current (Note 2,3) 6.5 A Output = 0V 50 μA Output Leakage Current IL Output = -1V, VIN=40V 2 30 mA Quiescent Current I Q (Note 4) 4.5 10 mA Standby Quiescent Current ISTBY ON/OFF pin = 5V(OFF), VIN = 40V 80 200 μA 1.3 VIH Low(Regulator ON) 0.6 ON/OFF Pin Logic Input Threshold voltage VIL High (Regulator OFF) 2.0 V IH VLOGIC = 2.5V (regulator OFF) 5 15 ON/OFF Pin Logic Input current IL VLOGIC = 0.5V (regulator ON) 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

5.0A, 150kHz, Step-down Switching Regulator LM1501A M a r . 2 0 1 1 – V e r . 1 . 3 4 HTC TYPICAL APPLICATION - Fixed Application Circuit 33uH COUT 220uFGND LM1501A-5.0 CIN 680uF VINUnregulated DC Input ON/OFF 5 D1 1N5824 Output Feedback Regulated Output 5A Load 12V - Adjustable Application Circuit 33uH COUT 220uF GND LM1501A-ADJ CIN 680uF VINUnregulated DC Input ON/OFF 5 1N5824 Output Feedback Regulated Output 5A Load 12V TYPICAL OPERATING CHARACTERISTICS T.B.D APPLICATION INFORMAION T.B.D