LM2575S-3.3 P+

LM2575S-3.3 P+ Description Features The LM2575/6 series switching regulators are monolithic integrated circuits designed for use in “buck” or “buck/ boost” regulator applications requiring accurate output voltages over combined variations of line, load and temperature. This unique series greatly simplifies switching power supply design. The LM2575 has a maximum output current of 1A and the LM2576 is rated for 3A. u Pin for pin replacement for National’s LM2575/6 series u DC-to-DC buck or buck/boost converter requiring MI JS u u u u The LM2575/6 series miniconverters include a u switching regulator and compensation network all within u the same package. Just add a choke, catch diode and u two capacitors to obtain an efficient DC-to-DC converter. u CR The current limit and thermal shutdown features of the LM2575/6 series fully protect the device against overstress conditions. Applications O u u The LM2575/6 series offers an alternative to popular 3 u terminal linear regulators by providing higher efficiency u Micro controller power supplies Medical equipment Industrial power supplies Instrumentation power supplies mi Typical Application Circuits Se with reduced heatsink size. In many applications a heat sink will not be required. only 4 support components Fixed or adjustable voltages Preset output voltages of 3.3V, 5V and 12V Wide output voltage range, 1.23V to 35V 82% typical efficiency @ 5V out Wide input voltage range, 4V to 40V Inhibit/enable control pin Industrial temperature range TO-220 and TO-263 packages co uc nd LM2576 L1 330µH 100µH D1 3A 7A C IN 68µF 120µF C OUT 330µF 1,000µF r to LM2575 www.jsmsemi.com 第１／１２页 LM2575S-3.3 P+ Absolute Maximum Ratings Parameter Input Voltage On/Off Pi n Input Voltage Sy mbol Maximum U nits VIN 45 V VON/OFF -0.3 £ VON/OFF £ VIN V -1 V Output Voltage to C ommon (Steady State) PD Internally Li mi ted W Thermal Resi stance Juncti on to Ambi ent TO-220 TO-263 q JA 55 60 °C /W Thermal Resi stance Juncti on to C ase TO-220 TO-263 q JC 2.0 2.0 °C /W Operati ng Juncti on Temperature Range TJ -40 to +125 °C TSTG -65 to +150 °C Lead Temperature (Solderi ng) 10 Sec. TLEAD 300 °C ESD Rati ng (Human Body Model) V ESD 2 kV Storage Temperature Range CR MI JS Power D i ssi pati on O Se Electrical Characteristics Parameter VO 8V to V IN Rated VO VO LM2576-12 Feedback Voltage V FB LM2576S-ADJ, VO = 5V Max Units 3.23 3.30 3.37 V 3.20 3.40 3.14 4.90 3.47 5.00 5.15 4.75 5.25 IO = 0.5A 11.76 12.24 15V to V IN Rated 11.52 12.48 11.40 12.60 IO = 0.5A 8V to V IN Rated 1.217 12.00 1.230 1.193 IB VIN = 12V, IO = 0.5A LM2576S-ADJ 1.243 V V V 1.267 1.180 Feedback Bias Current 5.10 4.85 r Output Voltage 8V to VIN Rated Typ to LM2576S-5.0 IO = 0.5A Min uc Output Voltage IO = 0.5A nd LM2576S-3.3 Test Conditions co Output Voltage Symbol mi Unless otherwise specified: VIN = 12V for 3.3V, 5V and ADJ options and 25V for 12V option; VOUT = 5V for ADJ option; TA = 25ºC; VIN rated = 40V; IO = 0.5 to 3A (LM2576), 0.2 to 1A (LM2575). Values in bold apply over full operating temperature range. 1.280 50 100 nA 500 www.jsmsemi.com 第２／１２页 LM2575S-3.3 P+ Electrical Characteristics (Cont.) Unless otherwise specified: VIN = 12V for 3.3V, 5V and ADJ options and 25V for 12V option; VOUT = 5V for ADJ option; TA = 25ºC; VIN rated = 40V; IO = 0.5 to 3A (LM2576), 0.2 to 1A (LM2575). Values in bold apply over full operating temperature range. Parameter Output Voltage Symbol Test Conditions Min Typ Max Units VO IO = 0.2A 3.23 3.30 3.37 V LM2575S-3.3 8V to VIN Rated 3.20 3.40 3.14 Output Voltage VO JS LM2575S-5.0 VFB 8V to VIN Rated 4.85 5.15 4.75 5.25 IB 15V to VIN Rated 11.52 12.48 11.40 12.60 IO = 0.2A 1.217 5V 1.230 1.193 VIN = 12V, IO = 0.2A 50 VIN = 12V, IO = 1A (LM2575, 3A for LM2576) nA 82 to uc VIN = 12V, IO = 1A (LM2575, 3A for LM2576) fSX 47 52 r 43 LM2575, IO = 1A LM2576, IO = 3A 0.9 1.4 93 98 Peak Current LM2575(1) ICL 1.7 2.2 1.3 3.5 www.jsmsemi.com kHz 62 1.2 DC 4.2 58 0.9 Max. Duty Cycle (On)(3) ICL % 82 ADJ, VO = 5V Peak Current LM2576(1) 100 77 88 VSAT V 500 VIN = 15V, IO = 1A (LM2575, 3A for LM2576) Saturation Voltage(1) 1.243 V 1.280 12V Switching Frequency 12.24 V 1.267 1.180 nd h 12.00 5.10 11.76 co Efficiency/Option 5.00 IO = 0.2A 8V to VIN Rated LM2575S-ADJ 3.3V 4.90 mi Feedback Bias Current IO = 0.2A Se LM2575S-ADJ, VO = 5V O Feedback Voltage VO CR LM2575-12 MI Output Voltage 3.47 V % 3.0 A 3.2 5.8 6.9 A 7.5 第３／１２页 LM2575S-3.3 P+ Electrical Characteristics (Cont.) Unless otherwise specified: VIN = 12V for 3.3V, 5V and ADJ options and 25V for 12V option; VOUT = 5V for ADJ option; TA = 25ºC; VIN rated = 40V; IO = 0.5 to 3A (LM2576), 0.2 to 1A (LM2575). Values in bold apply over full operating temperature range. Parameter Sy mbol Test C onditions IL VIN = VIN Rated Min Ty p Max U nits 2 mA Output Leakage C urrent(2) Output = 0V Output = -1V Qui escent C urrent(2) IQ JS (On/Off Pi n = 5V) ISTBY 5 10 50 mA VIH 2.2 1.4 V 2.4 O VIL µA 500 CR On/Off Pi n Logi c Input Level 30 12 MI Standby Qui escent C urrent 7.5 1.2 1.0 V 0.8 IIH VON/OFF = 5V (Off) 12 30 VON/OFF = 0V (On) 0 10 mi IIL Se On/Off Pi n Input C urrent µA co Notes: (1) Output sourcing current, resistive load, no inductor or capacitor. (2) Feedback = VO + 1.0V. (3) Feedback = 0V. r to uc nd www.jsmsemi.com 第４／１２页 LM2575S-3.3 P+ Pin Configurations Ordering Information (1) -XX = Voltage Option. Available voltages are 3.3V (-3.3), 5V (-5.0), 12V (-12), and ADJ (-ADJ), which is adjustable between 1.23V and 35V. . . LM2575, LM2576 MI JS TO-263-5 Pin CR TO-220-5 Function VIN 2 OUTPUT 3 O 1 C OMMON FE E D B A C K 5 ON/OFF TAB i s C OMMON co Block Diagram mi Se 4 r to uc nd www.jsmsemi.com 第５／１２页 LM2575S-3.3 P+ Typical Characteristics - LM2575 CR MI JS O mi Se co r to uc nd www.jsmsemi.com 第６／１２页 LM2575S-3.3 P+ Typical Characteristics - LM2575 (Cont.) CR MI JS O mi Se co r to uc nd www.jsmsemi.com 第７／１２页 LM2575S-3.3 P+ Typical Characteristics - LM2575 (Cont.) CR MI JS O mi Se co r to uc nd www.jsmsemi.com 第８／１２页 LM2575S-3.3 P+ Typical Characteristics - LM2576 CR MI JS O mi Se co r to uc nd www.jsmsemi.com 第９／１２页 LM2575S-3.3 P+ Typical Characteristics - LM2576 (Cont.) CR MI JS O mi Se co r to uc nd www.jsmsemi.com 第１０／１２页 LM2575S-3.3 P+ Typical Characteristics - LM2576 (Cont.) CR MI JS O mi Se co r to uc nd www.jsmsemi.com 第１１／１２页 LM2575S-3.3 P+ JS MI Outline Drawing - TO-220-5 Outline Drawing - TO-263-5 CR O mi Se co r to uc nd Minimum Land Pattern - TO-263-5 www.jsmsemi.com 第１２／１２页