IL2596-XX IKSEMICON | Alldatasheet

Document overview

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  • PDF pages: 12

Technical content

Features

  • 3.3V, 5V, 12V, and adjustable output versions
  • Adjustable version output voltage range, 1.2V to 37V ± 4% max over line and load conditions
  • Guaranteed 3A output load current
  • Input voltage range up to 40V
  • Requires only 4 external components
  • Excellent line and load regulation specifications
  • 150kHz fixed frequency internal oscillator
  • TTL shutdown capability
  • Low power standby mode, IQ typically 100µA
  • Thermal shutdown and current limit protection Functions
  • Simple high-efficiency step-down regulator
  • On-card switching regulators
  • Positive to negative converter

ORDERING INFORMATION

TA = -40° to 125° C for all packages TO-220-5L TO-263-5L TO-220-5L

Description

The IL2596 series of regulators are mono lithic integrated circuits that prov ide all the active functions for a step-down switching regulator, capable of driving a 3A 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 IL2596 series operates at a switching frequenc y of 150kHz. Available in standard 5-lead TO-220 package. Other features include a guaranteed ± 4% toleranc e on output voltage under specified input voltage and output load conditions, and ± 15% on the oscillator fr equency. External shutdown is included, featuring typically 100µA standby current. Self protection features include a two stage frequency reducing current limit for output switch and an over temperature shutdown for complete protection under fault conditions. The over temperature shutdown level is about 145oC with 5oC hysteresis. Rev. 03

(TA = 25oC) Characteristic Symbol Value Unit Maximum Input Supply Voltage VI 45 V ON/OFF Pin Input Voltage VIN -0.3 ≤ V ≤ +25 V Feedback Pin Voltage -0.3 ≤ V ≤ +25 V Output Voltage to Ground VO -1 V Power Dissipation PD Internally limited W Storage Temperature Range Tstg -65 to +150 oC Operating Temperature Range TJ 40 ≤ TJ ≤ +125 oC Operating Supply Voltage VIN 4.5 to 40 V Typical Aplication (Fixed Output Voltage Versions) Rev. 03

Electrical Characteristics

Unless otherwise specified, TJ = 25 oC VIN = 12V for the 3.3V, 5V, and Adjustable version and VIN = 24V for the 12V version. ILOAD = 500mA. Characteristic Symbol Test Condition Min Typ Max Unit Output Voltage VOUT IL2596–3 4.75V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A 3.168 3.3 3.432 IL2596–5 7V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A 4.8 5.0 5.2 V IL2596–12 15V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A 11.52 12.0 12.48 Efficiency IL2596–3 ILOAD = 3A 73 η IL2596–5 ILOAD = 3A 80 % IL2596–12 VIN = 25V, ILOAD = 3A 90 IL2596–A VOUT = 3V, ILOAD = 3A 73 % Feedback Voltage VFB IL2596–A 4.5V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A VOUT programmed for 1.193 1.230 1.267 V Feedback Bias Current ID IL2596-A; VFB = 1.3V 15 50 nA Oscillator Frequency fO 110 150 173 kHz Saturation Voltage VSAT IOUT = 3A (Note 1,2) 1.16 1.4 V Max Duty Cycle (ON) DC (Note 2) 100 % Max Duty Cycle (OFF) (Note 3) 0 Current Limit ICL Peak Current (Note 1,2) 3.4 4.5 6.0 A Output Leakage Current IL Output = 0V (Note 1,3) 50 µA Output = -1V, VIN = 40V 2 30 mA Quiescent Current IQ (Note 3) 5 10 mA Standby Quiescent Current ISTBY ON/OFF pin = 5V (OFF), VIN = 40V 100 200 µA ON/OFF Pin Logic Input VIH Low (Regulator ON) 2.0 1.3 0.6 V Threshold Voltage VIL High (Regulator OFF) ON/OFF Pin Input IH VLOGIC = 2.5V (regulator OFF) 5 15 µA Current IL VLOGIC = 0.5V (regulator ON) 0.02 5 Note 1: No elements connected to output pin. Note 2: Feedback pin removed from output and connected to 0V to force the output transistor switch ON. Note 3: 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. Rev. 03

Typical Perfomance Characteristics Iccz vs Tpkg (TO-220) 100 105 110 115 -50 -25 0 25 50 75 100 125 Temperature of package, Tpkg (°C) Iccz (uA) Vds vs Tpkg (TO-220) 0,2 0,4 0,6 0,8 -50 -25 0 25 50 75 100 125 Temperature of package , Tpkg (°C) Vds, (V) Ib (on 4 pin) vs Tpkg (TO-220) -50 -25 0 25 50 75 100 125 Temperature of package, Tpkg (°C) Ib (nA) Vin=12V Vfb=1,3V IL2596-adj Vfb vs Tpkg (TO-220) 1,05 1,1 1,15 1,2 1,25 -50 -25 0 25 50 75 100 125 Temperature of package, Tpkg (C) Vfb (V) Vin=12V Iout=3A Frequency F vs Tpkg (TO-220) 100 105 110 115 120 125 130 135 140 145 150 -50 -25 0 25 50 75 100 125 Temperature of package, Tpkg (C) F (kHz) Vin=12V Iout=3A IL2596-3.3 Vo vs Tpkg 3,05 3,1 3,15 3,2 3,25 3,3 3,35 3,4 3,45 3,5 -50 -25 0 255 07 5 100 125 Temperature of package, Tpkg (°C) Vo (V) Vin=12V Iout=3A Vin=41V Vin=12V Iout=0,2A Rev. 03

Rev. 03

Select R1 to be approximately 1 kW, use a 1% resistor for best stability. Figure 2. Standard Test Circuit for Adjustable Output Voltage Versions

Rev. 03

TO-220-5L (Bent Staggered) Rev. 03

Rev. 03