KIA2576FP

SEMICONDUCTOR TECHNICAL DATA 52kHz 3A Step-Down DC/DC Converter. The KIA2576 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 KIA2576 series operates at a switching frequency of 52kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. FEATURES Output voltage : 3.3V, 5V, 12V and adjustable output version. Adjustable version output voltage range, 1.23V to 37V 52 fixed switching frequency. Voltage mode non-synchronous PWM control. Thermal-shutdown and current-limit protection. ON/OFF shutdown control input. Operating voltage can be up to 40V. Output load current. : 3A TO-220-5 and D2PAK-5 packages. Low power standby mode. B E A KIA2576FP/PI00 ~ KIA2576FP/PI12 BIPOLAR LINEAR INTEGRATED CIRCUIT A I J N R M O G F L C DIM A B C D E F G I J K L M N O Q R MILLIMETERS _ 9.8 + 0.2 _ 8.8 + 0.2 8.0 _ 15 + 0.3 _ 5.0 + 0.2 _ 1.7 + 0.1 _ 0.8 + 0.1 _ 4.0 + 0.2 _ 1.27 + 0.13 6.7 _ 0.5 + 0.15 0~0.25 _ 1.27 + 0.1 _ 2.3 + 0.3 7.85 0~0.15 D E B KQ 1 2 3 4 5 Heat Sink is common to 3 GND D2 PAK-5 G H C P APPLICATION Simple High-efficiency step-down regulator. On-card switching regulators. Positive to negative converter. F D I L DIM A B C D E F G H I J K L M K J LINE UP ITEM KIA2576FP/PI00 KIA2576FP/PI33 KIA2576FP/PI50 KIA2576FP/PI12 OUTPUT VOLTAGE (V) Adjustable (1.23~37V) 3.3 5.0 12.0 1 2 3 4 5 PACKAGE M N O P MILLIMETERS _ 10 + 0.2 _ 24.6 + 0.2 _ 3.5 + 0.1 _ 0.8 + 0.1 _ 3.2 + 0.2 1.7 _ 4.5 + 0.2 _ 2.8 + 0.2 0.5 _ 3.2 + 0.5 _ 8.2 + 0.7 1.5 5.0 2.0 _ 5.0 + 0.5 _ 16.5 + 0.5 FP : D2PAK-5 PI : TO-220IS-5 TO-220IS-5 2006. 7. 6 Revision No : 1 N O 1/6 KIA2576FP/PI00 ~ KIA2576FP/PI12 CONNECTION (TOPVIEW) D2PAK-5 package 5 - ON/OFF 4 - Feed Back 3 - Ground 2 - Output 1 - Input TO-220IS-5 package 5 - ON/OFF 4 - Feed Back 3 - Ground 2 - Output 1 - Input APPLICATION CIRCUIT (1) Fixed Type Circuit 4 VIN = 12V 1 VIN CIN 100µF 5 ON/OFF 3 GND D1 SMAB33 CO 1000µF FB Output L1 100µΗ KIA2576FP33 2 VOUT = 3.3V/3A (2) Adjustable Type Circuit R1 FB 4 VIN = 12V 1 VIN CIN 100µF 5 ON/OFF [ON/OFF control function] GND : Output ON High : Output OFF R2 Output KIA2576FP00 2 3 GND L1 100µH VOUT = 3.3V/3A D1 SMAB33 CO 1000µF [ON/OFF control function] GND : Output ON High : Output OFF VOUT = VFB VFB = 1.23V R2 = 1kΩ∼3kΩ R1 < 1kΩ (1 + R2 ) R1 2006. 7. 6 Revision No : 1 2/6 KIA2576FP/PI00 ~ KIA2576FP/PI12 ABSOLUTE MAXIMUM RATINGS CHARACTERISTIC Supply Voltage ON/OFF Pin input Voltage Feedback Pin Voltage Output Voltage to Ground Power Dissipation 1 Power Dissipation 2 Storage Temperature Operating Temperature Operating Voltage PI FP PI FP SYMBOL VIN VON/OFF VFB VOUT PD1 PD2 Tstg Topr Vopr RATING 45 -0.3 ~ +25 -0.3 ~ +25 -1 1.5 2.0 15 35 -65 ~ +150 -40 ~ +125 +5 ~ +40 V UNIT V V V V W W ELECTRICAL CHARACTERISTICS Unless otherwise specified, VIN=12V for 3.3V, 5V, adjustable version and VIN=24V for the 12V version. ILOAD = 0.5A CHARACTERISTIC Feedback Bias Current Oscillator Frequency Saturation Voltage Max. Duty Cycle (ON) Max. Duty Cycle (OFF) Current Limit Output = 0 Output = -1 Quiescent Current Standby Quiescent Current ON/OFF pin Logic Input Threshold Voltage ON/OFF Pin Logic Input Current ON/OFF Pin Input Current Output Leakage Current SYMBOL IFB FOSC VSAT DC Ilimit IL IQ ISTBY VIL VIH IH IL TEST CONDITION VFB=1.3V (Adjustable version only) IOUT=3A, no outside circuit VFB=0V force driver on VFB=0V force driver on VFB=12V force driver off peak current no outside circuit VFB=0V force driver on no outside circuit, VFB=12V force driver off VIN=40V VFB=12V force driver off ON/OFF pin=5V VIN=40V Low (regulator ON) High (regulator OFF) VLOGIC=2.5V (OFF) VLOGIC=0.5V (ON) MIN. 47 3.6 2.0 TYP. 40 52 1.3 100 0 4.5 2 5 300 1.3 5 0.02 MAX. 60 100 58 1.4 1.5 6.9 50 30 10 500 600 0.6 15 5 UNIT nA kHz V % A A mA mA A V A ELECTRICAL CHARACTERISTICS CHARACTERISTIC Output Feedback Efficiency Output Voltage Efficiency Output Voltage Efficiency Output Voltage Efficiency KIA2576FP/PI12 VOUT KIA2576FP/PI50 VOUT KIA2576FP/PI33 VOUT KIA2576FP/PI00 SYMBOL VFB TEST CONDITION 5V