 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| ACE2596 Technology Description 150KHz 3A Buck DC-DC Converter The ACE2596 series of regulators are fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3A load with excellent line and load regulation. These regulators include internal frequency compensation and a fixed frequency oscillator so that they are easy to use. A system adopting ACE2596 requires a minimum number of external components to work. A standard series of inductors, optimized for use with the ACE2596 series, are available from several manufacturers. This feature greatly simplifies the design of switch-mode power supplies. These ICs are available in TO-263-5 packages. Features * * * * * * * * * * * * * * 3.3V, 5V, 12V Fixed(4% Tolerance) and Adjustable (3% Tolerance) Output Versions Guaranteed 3A Output Load Current 150kHz Fixed Frequency Internal Oscillator Input Voltage Range up to 32V Requires only 4 external components High Efficiency up to 90% Excellent Line and Load Regulation TTL Shutdown Capability Low Power Standby Mode, IQ Typically 80A Built-in Current Limit Protection and Thermal Shutdown Circuit Application LCD Monitor and LCD TV On-Card DC-DC Converter DVD Recorder PDP Absolute Maximum Ratings Parameter Input voltage ON/OFF Pin Voltage Feedback Pin Voltage Operating Junction Temperature Thermal Resistance (Junction to Ambient, No Heatsink) TO-263-5 Lead Temperature (Soldering, 10sec) Storage Temperature Range Symbol VIN VON/OFF VFB TJ RJA TLEAD TSTG Max 40 40 40 150 60 260 -65 to150 O Unit V V V O C C/W O C C O Note : Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device ate these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. VER 1.2 1 ACE2596 Technology Packaging Type TO-263-5 (WM) 5.ON/OFF 4.FB 3.GND 2.Vout 1.Vin 150KHz 3A Buck DC-DC Converter Ordering information Selection Guide ACE2596 XX XXX + H Halogen - free Pb - free WM :TO-263-5 Output Voltage 3.3V/5.0V/12V/ADJ Functional Block Diagram VER 1.2 2 ACE2596 Technology Recommended Operating Conditions Parameter 3.3V 5.0V Maximum Input Voltage (Note 2) 12V ADJ (VOUT=3.2V) ADJ (VOUT=2.5V) Operating Junction Temperature 150KHz 3A Buck DC-DC Converter Symbol Value Unit 32 32 V 32 32 25 -40 to 125 OC VIN TJ Note : For ADJ version, the recommended supply voltage depends on the needed output voltage. Electrical Characteristics For 3.3V Output Voltage Version Unless otherwise specified, TJ=25, The specifications with boldface type apply over Full Operating Junction Temperature Range. Parameter Output Efficiency Symbol VOUT Conditions 5.5VVIN32V, 0.2AILOAD3A VIN=12V, ILOAD=3A Min 3.168 3.135 Typ 3.3 75 Max 3.432 3.465 Unit V % For 5V Output Voltage Version Unless otherwise specified, TJ=25, The specifications with boldface type apply over Full Operating Junction Temperature Range. Parameter Output Efficiency Symbol VOUT Conditions 7VVIN32V, 0.2AILOAD3A VIN=12V, ILOAD=3A Min 4.800 4.750 Typ 5 80 Max 5.200 5.250 Unit V % For 12V Output Voltage Version Unless otherwise specified, TJ=25, The specifications with boldface type apply over Full Operating Junction Temperature Range. Parameter Output Efficiency Symbol VOUT Conditions 15VVIN32V, 0.2AILOAD3A VIN=24V, ILOAD=3A Min 11.52 11.40 Typ 12.0 88 Max 12.48 12.60 Unit V % VER 1.2 3 ACE2596 Technology For ADJ Output Voltage Version 150KHz 3A Buck DC-DC Converter Unless otherwise specified, TJ=25, The specifications with boldface type apply over Full Operating Junction Temperature Range. Parameter Output Efficiency Symbol VOUT Conditions 4.5VVIN32V, 0.2AILOAD3A VOUT programmed for 2.5V VIN=12V, ILOAD=3A, VOUT=2.5V Min 1.193 1.180 Typ 1.23 73 Max 1.267 1.280 Unit V % Electrical Characteristics For AallOutput Voltage Versions Unless otherwise specified, VIN=12V for 3.3V, 5V and adjustable version, VIN=24V for 12V version, ILOAD=500mA, TJ=25. Specifications with boldface type apply over Full Operating Junction Temperature Range. Parameter Feedback Bias Current Oscillator Frequency Saturation Voltage Maximum Duty Cycle Minimum Duty Cycle Current Limit Symbol IFB f VSAT DMAX DMIN ICL Conditions Adjustable Version Only, VFB=1.3V (Note 3) ILOAD=3A (No output devices, VFB=0V) VFB=0V VFB=1.3V Peak Current, No output devices, VFB=0V Output=0V, No output devices, VFB =1.3V, VIN=32V Output=-1V, No output devices, VFB =1.3V, VIN=32V VFB=1.3V ON/OFF Pin=5V, VIN=18V Regulator ON Regulator OFF VPIN5=2.5V (Regulator OFF) VPIN5=2.5V (Regulator ON) Min Typ 10 Max 50 100 173 173 1.5 1.6 Unit nA kHz V % % 127 110 150 1.2 100 0 3.6 3.4 4.5 6.9 7.5 A A 50 2 5 80 30 10 200 250 0.6 2.0 5 0.02 15 5 Output Leakage Current ISWL mA mA A V V A A Quiescent Current Standby Quiescent Current IQ ISTBY VIL VIH IH ON/OFF Pin Logic Input Threshold Voltage ON/OFF Pin Input Current Note : IL 1. The switching frequency is reduced when the second stage current limit is activated. 2. The specifications with boldface are GBD (Guaranteed By Design). VER 1.2 4 ACE2596 Technology Typical Performance Characteristics 150KHz 3A Buck DC-DC Converter Figure 1. Efficiency vs. Output Current Figure 2. Efficiency vs. Output Current Figure 3. Efficiency vs. Output Current Figure 4. Efficiency vs. Output Current Figure 5. Efficiency vs. Input Current Figure 6. Line Regulation VER 1.2 5 ACE2596 Technology 150KHz 3A Buck DC-DC Converter Figure 7. Load Regulation Figure 8. Switch Saturation Voltage vs. Switch Current Figure 9. Switch Current Limit vs. Junction Temperature Figure 10. Quiescent Current vs. Supply Voltage Figure 11. Quiescent Current Limit vs. Junction Temperature Figure 12. Shutdown Quiescent Current vs. Input Voltage VER 1.2 6 ACE2596 Technology 150KHz 3A Buck DC-DC Converter Figure 13. On/Off Threshold Voltage vs. Junction Temperature Figure 14. On/Off Pin Current vs. On/Off Pin Voltage Figure 15. Switching Frequency vs. Junction Temperature VER 1.2 7 ACE2596 Technology Typical Application 150KHz 3A Buck DC-DC Converter ACE2596-3.3V L1: Sumida CDRH127/LDNP-220MC or Equivalent Figure 16. Typical Application of ACE2596-3.3V ACE2596-5.0V L1: Sumida CDRH127/LDNP-220MC or Equivalent Figure 17. Typical Application of ACE2596-5.0V VER 1.2 8 ACE2596 Technology 150KHz 3A Buck DC-DC Converter ACE2596-ADJ L1: Sumida CDRH127/LDNP-220MC or Equivalent Figure 18. Typical Application of ACE2596-12V R2 3.69K R1 3.6K 4 12V Unregulated DC Input FEEDBACK 1 ACE2596-ADJ 2 Vin Output + GND ON/OFF 3 5 CFF 33nF L1 22uH D1 1N5822 2.5V Regulated DC Output 3A Load Vout=1.23*((R2+R1)/R1) + Cout 220uF Cin 470uF L1: Sumida CDRH127/LDNP-220MC or Equivalent Figure 19. Typical Application of ACE2596-ADJ VER 1.2 9 ACE2596 Technology 150KHz 3A Buck DC-DC Converter Packing Information TO-263-5 VER 1.2 10 ACE2596 Technology 150KHz 3A Buck DC-DC Converter Notes ACE does not assume any responsibility for use as critical components in life support devices or systems without the express written approval of the president and general counsel of ACE Electronics Co., LTD. As sued herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and shoes failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. ACE Technology Co., LTD. http://www.ace-ele.com/ VER 1.2 11 |
Price & Availability of ACE2596ADJWMH
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |