MB39C007 2 ch DC/DC Converter IC with PFM/PWM Synchronous Rectification Description The MB39C007 is a current mode type 2-channel DC/DC converter IC built-in voltage detection, synchronous rectifier, and down conversion support. The device is integrated with a switching FET, oscillator, error amplifier, PFM/PWM control circuit, reference voltage source, and voltage detection circuit. The external inductor and de-coupling capacitor are needed only for the external component.MB39C007 is small, achieve a highly effective DC/DC converter in the full load range. This device is suitable as the built-in power supply for handheld equipment such as mobile phones/PDA, DVDs, and HDDs. Features High efficiency: 96% (Max) Low current consumption: 30 A (At PFM/ch) Output current: 800 mA/ch (Max) Input voltage range: 2.5 V to 5.5 V Operating frequency: 2.0 MHz (Typ) Built-in PWM operation fixed function No flyback diode needed Low dropout operation: For 100% on duty Built-in high-precision reference voltage generator: 1.30 V 2% Consumption current in shutdown mode: 1 A or less Built-in switching FET: P-ch MOS 0.3 (Typ), N-ch MOS 0.2 (Typ) High speed for input and load transient response in the current mode Over-temperature protection Packaged in a compact package: QFN-24 Applications Flash ROMs MP3 players Electronic dictionary devices Surveillance cameras Portable GPS navigators DVD drives IP phones Network hubs Mobile phones etc. Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 002-08228 Rev. *C Revised May 31, 2017MB39C007 Contents Description ................................................................... 1 10.7 Board Layout, Design Example ...................... 19 Features ....................................................................... 1 11. Example Of Standard Operation Applications ................................................................. 1 Characteristics........................................................ 21 1. Pin Assignment ...................................................... 3 11.1 Characteristics CH1 ............................................. 21 2. Pin Descriptions ..................................................... 4 11.2 Switching Waveform ....................................... 29 3. I/O Pin Equivalent Circuit Diagram ....................... 5 11.3 Output Waveforms at Sudden Load Changes 30 4. Block Diagram ........................................................ 6 11.4 CTL Start-up Waveform .................................. 31 4.1 Current mode ...................................................... 7 11.5 CTL Stop Waveform ....................................... 33 5. Function Of Each Block ......................................... 8 11.6 Current Limitation Waveform .......................... 33 6. Absolute Maximum Ratings ................................ 10 11.7 Voltage Detection Waveform .......................... 34 7. Recommended Operating Conditions ................ 11 11.8 Waveform of Dynamic Output Voltage 8. Electrical Characteristics .................................... 12 Transition (VO1 1.8 V 2.5 V) ........................ 34 9. Test Circuit for Measuring Typical Operating 12. Application Circuit Examples ...........................35 Characteristics ....................................................... 14 12.1 Application Circuit Example 1 ......................... 35 10. Application Notes ............................................... 15 12.2 Application Circuit Example 2 ......................... 36 10.1 Selection of Components ................................ 15 12.3 Application Circuit Example Components List 37 10.2 Output voltage setting ..................................... 16 13. Usage Precautions ............................................. 38 10.3 About Conversion Efficiency ........................... 17 14. Ordering Information ......................................... 38 10.4 Power Dissipation and Heat 15. RoHS Compliance Information ......................... 38 Considerations ...................................................... 17 16. Package Dimension ........................................... 39 10.5 XPOR Threshold Voltage Setting VPORH, Document History ..................................................... 40 VPORL ................................................................. 18 Sales, Solutions, and Legal Information ................. 41 10.6 Transient Response ........................................ 19 Document Number: 002-08228 Rev. *C Page 2 of 41