CBM2596-XX COREBAI | Alldatasheet
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Technical content
www.corebai.com CBM2596-XX OPERATION INSTRUCTION
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
APPLICATIONS
Simple high-efficiency step-down regulator On-card switching regulators Positive to negative converter GENERAL DESCRIPTION The CBM2596 series of regulators are monolithic integrated circuits that provide 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 CBM2596 series operates at a switching frequency of 150kHz. Available in standard 5-lead TO-220 package. Other features include a guaranteed ± 4% tolerance on output voltage under specified input voltage and output load conditions, and ± 15% on the oscillator frequency. 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 145℃ with 5℃ hysteresis. ABSOLUTE MAXIMUM RATINGS A ll data sheet.com
www.corebai.com CBM2596-XX OPERATION INSTRUCTION (Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.) Rating Symbol Value Unit Maximum Input Supply Voltage VI 45V V ON/OFF Pin Input Voltage VIN -0.3V≤V≤+25V V Feedback Pin Voltage - -0.3V≤V≤+25V V Output Voltage to Ground VO -1V V Power Dissipation PD Internally limited W Storage Temperature Range Tstg -65℃ to +150℃ ℃ Operating Temperature Range TJ 40℃≤TJ≤+125℃ ℃ Operating Supply Voltage VIN 4.5V to 40V V * Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Typical Aplication (Fixed Output Voltage Versions)
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, TJ = 25℃，VIN = 12V for the 3.3V, 5V, and Adjustable version and VIN = 24V for the 12V version. ILOAD = 500mA. A ll data sheet.com
www.corebai.com CBM2596-XX OPERATION INSTRUCTION Characteristic Symbol Test Condition Min Typ Max Unit Output Voltage VOUT CBM2596–3 4.75V≤VIN≤40V, 0.2A≤ILOAD≤3A 3.168 3.3 3.432 VCBM2596–5 7V≤VIN≤40V, 0.2A≤ILOAD≤3A 4.8 5.0 5.2 CBM2596–12 15V≤VIN≤40V, 0.2A≤ILOAD≤3A 11.52 12.0 12.48 Efficiency η CBM2596–3 ILOAD = 3A 73 CBM2596–5 ILOAD = 3A 80 CBM2596–12 VIN = 25V, ILOAD = 3A 90 CBM2596–A VOUT = 3V, ILOAD = 3A 73 Feedback Voltage VFB CBM2596–A 4.5V≤VIN≤40V, 0.2A≤ILOAD≤3A V OUT programmed for 3V 1.193 1.230 1.267 V Feedback Bias Current ID CBM2596-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) Max Duty Cycle (OFF) DC (Note 2) 100 (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 Threshold Voltage VIH Low (Regulator ON) 2.0 1.3 0.6 V VIL High (Regulator OFF) ON/OFF Pin Input Current IH VLOGIC = 2.5V (regulator OFF) 5 15 μA 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. Typical Perfomance Characteristics A ll data sheet.com
www.corebai.com CBM2596-XX OPERATION INSTRUCTION A ll data sheet.com
www.corebai.com CBM2596-XX OPERATION INSTRUCTION A ll data sheet.com
Figure 2. Standard Test Circuit for Adjustable Output Voltage Versions Select R1 to be approximately 1 kW, use a 1% resistor for best stability.
possible for the different input and output voltage conditions. CBM2596 has a maximum input voltage spec of 40V. recovery diode could be used. output from going positive by more than a diode voltage. Figure 6. Undervoltage Lockout with Hysteresis for Inverting Regulator
www.corebai.com CBM2596-XX OPERATION INSTRUCTION PACKAGE TO-220-5L Symbol Dimensions In Millimeters Dimensions Inches Min Nom Max Min Nom Max A ll data sheet.com
www.corebai.com CBM2596-XX OPERATION INSTRUCTION TO-263-5L Symbol Dimensions In Millimeters Dimensions Inches Min Nom Max Min Nom Max A ll data sheet.com
www.corebai.com CBM2596-XX OPERATION INSTRUCTION TO-220-5L (Bent Staggered) Symbol Dimensions In Millimeters Dimensions Inches Min Nom Max Min Nom Max d1 1.0 0.039 d2 6.3 0.248 H1 6.4 0.250 J1 2.7 0.105 J3 8.4 0.331 A ll data sheet.com
www.corebai.com CBM2596-XX OPERATION INSTRUCTION PACKAGE/ORDERING INFORMATION PRODUCT ORDERING NUMBER TEMPRANGE PACKAGE PAKEAGE MARKING TRANSPOT MEDIA,QUANTILY CBM2596 CBM2596T-ADJ -40℃~125℃ TO-220 2596T-ADJ Tape and Reel,46 CBM2596DT-ADJ -40℃~125℃ TO-263-5 2596DT-ADJ Tape and Reel,500 CBM2596-3.3 CBM2596T-3.3 -40℃~125℃ TO-220 2596T-3.3 Tape and Reel,46 CBM2596DT-3.3 -40℃~125℃ TO-263-5 2596DT-3.3 Tape and Reel,500 CBM2596-5.0 CBM2596T-5.0 -40℃~125℃ TO-220 2596T-5.0 Tape and Reel,46 CBM2596DT-5.0 -40℃~125℃ TO-263-5 2596DT-5.0 Tape and Reel,500 CBM2596-12 CBM2596T-12 -40℃~125℃ TO-220 2596T-12 Tape and Reel,46 CBM2596DT-12 -40℃~125℃ TO-263-5 2596DT-12 Tape and Reel,500 A ll data sheet.com