DATA SHEET www.onsemi.com 5 A, 2.4 MHz, Digitally Programmable TinyBuck Regulator WLCSP20 CASE 567QK, 567SH, 567SK FAN53555 ORDERING INFORMATION Description See detailed ordering and shipping information on page 2 The FAN53555 is a step down switching voltage of this data sheet. regulator that delivers a digitally programmable output from an input voltage supply of 2.5 V to 5.5 V. The output voltage 2 is programmed through an I C interface capable of Pulse Current Capability: 6.5 A (05 Option) operating up to 3.4 MHz. 2.5 V to 5.5 V Input Voltage Range Using a proprietary architecture with synchronous Digitally Programmable Output Voltage: rectification, the FAN53555 is capable of delivering 5 A 00/01/03/05/08/18 Options: 0.61.23 V in 10 mV continuous at over 80% efficiency, while maintaining over 80% efficiency at load currents as low as 10 mA. Pulse Steps currents as high as 6.5 A can be supported by the 05 option. 04/042/09/ Options: 0.6031.411 V in 12.826 mV The regulator operates at a nominal fixed frequency of Steps 2.4 MHz, which reduces the value of the external 23, 79 Option: 0.601.3875 V in 12.5 mV Steps components to 330 nH for the output induction and as low 24 Option: 0.6031.420 V in 12.967 mV Steps as 20 F for the output capacitor. Additional output 13 Option: 0.81.43 V in 10 mV Steps capacitance can be added to improve regulation during load Programmable Slew Rate for Voltage Transitions transients without affecting stability. Inductance up to 2 I CCompatible Interface Up to 3.4 Mbps 1.2 H may be used with additional output capacitance. PFM Mode for High Efficiency in Light Load At moderate and light loads, Pulse Frequency Modulation Quiescent Current in PFM Mode: 60 A (Typical) (PFM) is used to operate in PowerSave Mode with a typical Internal SoftStart quiescent current of 60 A. Even with such a low quiescent current, the part exhibits excellent transient response during Input UnderVoltage Lockout (UVLO) large load swings. At higher loads, the system automatically Thermal Shutdown and Overload Protection switches to fixedfrequency control, operating at 2.4 MHz. 20Bump WaferLevel Chip Scale Package (WLCSP) In Shutdown Mode, the supply current drops below 1 A, reducing power consumption. PFM Mode can be disabled if Applications constant frequency is desired. The FAN53555 is available in Application, Graphic, and DSP Processors a 20bump, 1.6 2 mm, WLCSP. Arm , Krait, OMAP , NovaThor , ARMADA Hard Disk Drives Features Tablets, Netbooks, UltraMobile PCs FixedFrequency Operation: 2.4 MHz Smart Phones BestinClass Load Transient Gaming Devices Continuous Output Current Capability: 5 A PVIN C C IN1 IN EN VOUT SDA L1 SW FAN53555 SCL VDD C OUT VSEL Core GND Processor (System Load) AGND GND Figure 1. Typical Application Semiconductor Components Industries, LLC, 2010 1 Publication Order Number: January, 2022 Rev. 7 FAN53555/DFAN53555 Table 1. ORDERING INFORMATION 2 I C Max. PowerUp Defaults Slave A1 PIN RMS Programmable VSEL0 VSEL1 Address Function Current Output Voltage Part Number Top Mark EN Pin Low FAN53555UC00X BK 1.05 1.20 C0 VSEL 5 A 0.61.23 V in Registers 10 mV not reset FAN53555UC01X BL 0.90 OFF VSEL 5 A FAN53555UC03X BN 0.90 N/A PGOOD 5 A FAN53555UC04X BP 1.10 1.20 VSEL 5 A 0.6031.411 V Registers in 12.826 mV reset FAN53555UC05X* BU 0.90 OFF VSEL 5 A 0.61.23 V in Registers 10 mV not reset FAN53555BUC05X (Note 1) BU 0.90 OFF VSEL 5 A FAN53555UC08X* BW 1.02 1.15 VSEL 4 A FAN53555BUC08X (Note 1) BJ 1.02 1.15 VSEL 4 A 0.6031.411 V FAN53555BUC09X (Note 1) CP 1.10 1.10 VSEL 3 A in 12.826 mV FAN53555UC09X* CP 1.10 1.10 VSEL 3 A FAN53555UC13X CT 1.15 1.15 VSEL 5 A 0.81.43 V in 10 mV FAN53555BUC13X (Note 1) CT 1.15 1.15 VSEL 5 A FAN53555UC18X* CU 1.02 1.15 VSEL 5 A 0.61.23 V in 10 mV FAN53555BUC18X (Note 1) CU 1.02 1.15 VSEL 5 A FAN53555BUC79X FU 0.85 N/A PGOOD 5 A Registers reset FAN53555BUC23X (Note 1) CW 1.15 1.15 VSEL 5 A 0.61.3875 V in Registers 12.5 mV not reset FAN53555UC24X CR 1.225 1.212 VSEL 4 A 0.6031.42 V in Registers 12.967 mV reset FAN53555BUC24X (Note 1) CR 1.225 1.212 VSEL 4 A FAN53555UC042X (Note 2) BX 1.10 1.20 C4 VSEL 5 A 0.6031.411 V in 12.826 mV 1. The FAN53555BUC05X, FAN53555BUC08X, FAN53555BUC09X, FAN53555BUC13X, FAN53555BUC18X, FAN53555BUC23X, and FAN53555BUC24X, include backside lamination. 2 2. The 042 option is the same as the 04 option, except the I C slave addresses. 3. Temperature Range 40 to 85 C, Package WLCSP20, Packing Method Tape & Reel *This device is End of Life. Please contact sales for additional information and assistance with replacement devices. www.onsemi.com 2