KIA2596FP/PI00 ~ KIA2596FP/PI12 SEMICONDUCTOR TECHNICAL DATA BIPOLAR LINEAR INTEGRATED CIRCUIT 150kHz 3A Step-Down DC/DC Converter. I A B D N M R O L G MILLIMETERS _ 0.2 9.8 + _ 0.2 8.8 + 8.0 _ 0.3 15 + _ 0.2 5.0 + _ 0.1 1.7 + _ 0.1 0.8 + _ 0.2 4.0 + _ 0.13 1.27 + DIM A B C D E F G I J K L M N O Q R J E The KIA2596 series are monolithic IC that design for a step-down DC/DC converter,and own the ability of driving a 3A load without additional transistor component. Due to reducing the number of external component, the board space can be saved easily. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design. Regarding protected function,thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. The KIA2596 series operates at a switching frequency of 150kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. F C 6.7 _ 0.15 0.5 + 0~0.25 _ 0.1 1.27 + _ 0.3 2.3 + 7.85 0~0.15 K Q 1 2 3 4 5 Heat Sink is common to 3 GND FEATURES Output voltage : 3.3V, 5V, 12V and adjustable output version. Adjustable version output voltage range, 1.23V to 37V 150k D2 PAK-5 fixed switching frequency. Voltage mode non-synchronous PWM control. Thermal-shutdown and current-limit protection. ON/OFF shutdown control input. G A H C Operating voltage can be up to 40V. Output load current. : 3A E TO-220-5 and D2PAK-5 packages. N O B P Low power standby mode. APPLICATION I Simple High-efficiency step-down regulator. L On-card switching regulators. D Positive to negative converter. F M J K G H I J K L LINE UP ITEM OUTPUT VOLTAGE (V) KIA2596FP/PI00 Adjustable (1.23~37V) KIA2596FP/PI33 3.3 FP : D2PAK-5 KIA2596FP/PI50 5.0 PI : TO-220IS-5 KIA2596FP/PI12 12.0 2006. 7. 6 DIM A B C D E F Revision No : 2 PACKAGE M N O P 1 2 3 4 MILLIMETERS _ 0.2 10 + _ 0.2 24.6 + _ 0.1 3.5 + _ 0.1 0.8 + _ 0.2 3.2 + 1.7 _ 0.2 4.5 + _ 0.2 2.8 + 0.5 _ 0.5 3.2 + _ 0.7 8.2 + 1.5 5.0 2.0 _ 0.5 5.0 + _ 0.5 16.5 + 5 TO-220IS-5 1/6 KIA2596FP/PI00 ~ KIA2596FP/PI12 CONNECTION (TOPVIEW) TO-220IS-5 package D2PAK-5 package 5 - ON/OFF 4 - Feed Back 3 - Ground 2 - Output 1 - Input 5 - ON/OFF 4 - Feed Back 3 - Ground 2 - Output 1 - Input APPLICATION CIRCUIT (1) Fixed Type Circuit 4 FB L1 33uH VIN = 12V 1 KIA2596FP33 2 Output VOUT = 3.3V/3A VIN CIN 680µF 5 3 ON/OFF D1 SMAB33 GND CO 220µF [ON/OFF control function] GND : Output ON High : Output OFF (2) Adjustable Type Circuit R1 R2 FB 4 VIN = 12V 1 KIA2596FP00 2 Output L1 33µH VOUT = 3.3V/3A VIN CIN 680µF 5 ON/OFF 3 GND D1 SMAB33 CO 220µF [ON/OFF control function] GND : Output ON High : Output OFF VOUT = VFB (1 + R2 ) R1 VFB = 1.23V R2 = 1kΩ∼3kΩ R1 < 1kΩ 2006. 7. 6 Revision No : 2 2/6 KIA2596FP/PI00 ~ KIA2596FP/PI12 ABSOLUTE MAXIMUM RATINGS CHARACTERISTIC Supply Voltage ON/OFF Pin input Voltage Feedback Pin Voltage PI FP PI Power Dissipation 2 RATING UNIT VIN 45 V VON/OFF -0.3 ~ +25 V VFB -0.3 ~ +25 V -1 V VOUT Output Voltage to Ground Power Dissipation 1 SYMBOL FP 1.5 PD1 W 2.0 15 PD2 W 35 Storage Temperature Tstg -65 ~ +150 Operating Temperature Topr -40 ~ +125 Operating Voltage Vopr +5 ~ +40 V ELECTRICAL CHARACTERISTICS Unless otherwise specified, VIN=12V for 3.3V, 5V, adjustable version and VIN=24V for the 12V version. ILOAD = 0.5A CHARACTERISTIC SYMBOL IFB Feedback Bias Current FOSC Saturation Voltage VSAT DC Max. Duty Cycle (OFF) Output = 0 Output = -1 Output Leakage Current IL IQ Quiescent Current ISTBY Standby Quiescent Current ON/OFF pin Logic Input Threshold Voltage ON/OFF Pin Logic Input Current VIL VIH IH - 40 127 150 - 1.3 VFB=0V force driver on - 100 MAX. 60 100 173 1.4 1.5 - VFB=12V force driver off - 0 - 3.6 4.5 6.9 A A mA IOUT=3A, no outside circuit VFB=0V force driver on no outside circuit, VFB=12V force driver off - - 50 VIN=40V - 2 30 VFB=12V force driver off - 5 ON/OFF pin=5V VIN=40V - 300 5 10 500 600 0.6 15 0.02 5 Low (regulator ON) High (regulator OFF) VLOGIC=2.5V (OFF) IL ON/OFF Pin Input Current TYP. peak current no outside circuit VFB=0V force driver on Ilimit Current Limit MIN. VFB=1.3V (Adjustable version only) Oscillator Frequency Max. Duty Cycle (ON) TEST CONDITION 2.0 - VLOGIC=0.5V (ON) - 1.3 UNIT nA kHz V % mA A V A ELECTRICAL CHARACTERISTICS CHARACTERISTIC Output Feedback SYMBOL VFB KIA2596FP/PI00 Efficiency Output Voltage KIA2596FP/PI33 VOUT Efficiency Output Voltage KIA2596FP/PI50 VOUT Efficiency Output Voltage KIA2596FP/PI12 VOUT TEST CONDITION TYP. LIMIT UNIT 1.23 1.193/1.18 1.267/1.28 VIN = 12V, ILOAD=3A 73 - 5V<VIN<40V, 0.2A ILOAD 3A 3.3 3.168/3.135 3.432/3.465 VIN = 12V, ILOAD=3A 73 - 7.5V<VIN<40V, 0.2A ILOAD 3A 5 4.8/4.75 5.2/5.25 VIN=12V, ILOAD=3A 80 - 12 11.52/11.4 12.48/12.6 V VMIN VMAX % V VMIN VMAX % V VMIN VMAX % V VMIN VMAX 90 - % 5V<VIN<40V, 0.2A ILOAD 3A VOUT programmed for 3V 15V<VIN<40V, 0.2A ILOAD 3A VIN=15V, ILOAD=3A Efficiency Specifications with boldface type are for full operating temperature range, the other type are for Tj=25 2006. 7. 6 Revision No : 2 3/6 KIA2596FP/PI00 ~ KIA2596FP/PI12 LINE REGULATION 1.5 1.0 0.5 0 -0.5 VIN=20V ILOAD = 3A Normalized at Tj=25 C -1.0 -1.5 -50 -25 0 25 50 75 100 125 OUTPUT VOLTAGE CHANGE (%) OUTPUT VOLTAGE CHANGE (%) NORMALIZED OUTPUT VOLTAGE 1.4 ILOAD =500mA 1.2 TJ=25 C 1.0 0.8 0.6 3.3V, 5V, 12V & ADJ 0.4 0.2 0 -0.2 -0.4 -0.6 0 10 20 EFFICIENCY 85 80 5V 75 3.5V 5 10 15 20 25 30 35 40 OUTPUT VOLTAGE CHANGE (%) EFFICENCY (%) 90 0 1.4 VIN = 12V 1.2 1.1 Tj = -40 C 1.0 0.9 0.8 25 C 125 C 0.7 0.6 0 1 5.0 4.5 4.0 50 75 Revision No : 2 4 100 125 L = 33µH RIND = 0.04Ω VOUT = VREG = 50mV 1.4 1.2 ILOAD = 3A 1.0 ILOAD = 1A 0.8 0 25 JUNCTION TEMPERATURE ( C ) 2006. 7. 6 1.6 VIN = 12V VOUT = 5V 0 3 DROPOUT VOLTAGE INPUT - OUTPUT DIFFERENTIAL (V) SUPPLY CURRENT (mA) 5.5 2 SWITCH CURRENT (A) SWITCH CURRENT LIMIT -25 60 1.3 INPUT VOLTAGE(V) 3.5 -50 50 SWITCH SATURATION VOLTAGE 95 65 40 OUTPUT VOLTAGE (V) JUNCTION TEMPERATURE ( C ) 70 30 -50 -25 0 25 50 75 100 125 JUNCTION TEMPERATURE ( C ) 4/6 KIA2596FP/PI00 ~ KIA2596FP/PI12 OPERATING QUIESCENT CURRENT 500 5V < VIN < 40V ISWITCH = 0 20 16 VON/OFF = 5V 400 CURRENT (µA) SUPPLY CURRENT (mA) 24 SHUTDOWN QUIESCENT CURRENT Switch ON 12 8 Switch OFF 4 100 0 -50 -25 0 25 50 75 100 125 0 10 30 40 SUPPLY VOLTAGE (V) MINIMUM OPERATING VOLTAGE ON/OFF THRESHOLD VOLTAGE THRESHOLD VOLTAGE (V) 2.5 4 3 2 1 VOUT = 1.23V ILOAD = 120mA -50 -25 0 25 50 75 100 2.0 1.0 ON 0.5 0 125 OFF 1.5 -50 JUNCTION TEMPERATURE ( C ) -25 8 25 50 75 100 125 SWITCHING FREQUENCY 200 VIN=40V -40 C Tj 125 C FREQUENCY (KHz) 7 0 JUNCTION TEMPERATURE ( C ) ON/OFF PIN CURRENT (SINKING) CURRENT (µA) 20 JUNCTION TEMPERATURE ( C ) 5 INPUT VOLTAGE (V) Tj = -40 C AND 125 C 200 50 0 0 Tj = 25 C 300 6 5 4 3 2 150 100 50 1 0 0 5 10 15 20 ON/OFF PIN VOLTAGE (V) 2006. 7. 6 Revision No : 2 25 0 -50 -25 0 25 50 75 100 125 JUNCTION TEMPERATURE ( C ) 5/6 KIA2596FP/PI00 ~ KIA2596FP/PI12 POWER DISSIPATION-1 (TO-220IS-5) 10 POWER DISSIPATION PD (W) FEEDBACK BIAS CURRENT (nA) FEEDBACK PIN BIAS CURRENT 7.5 5.0 2.5 0 -2.5 Adjustable Version Only -5.0 -50 -25 0 25 50 75 100 125 20 THERMAL RESISTANCE J-A J-C C/W 8.33 83.3 15 10 5 0 -25 0 50 100 150 AMBIENT TEMPERATURE Ta ( C ) JUNCTION TEMPERATURE ( C ) POWER DISSIPATION-2 (D2PAK-5) POWER DISSIPATION PD (W) 40 THERMAL RESISTANCE J-A J-C 3.6 62.5 C/W 35 30 25 20 15 10 5 0 -25 0 25 50 75 100 125 150 AMBIENT TEMPERATURE Ta ( C) 2006. 7. 6 Revision No : 2 6/6