FAN53611 Series

6MHz, 600mA / 1A Synchronous Buck Regulator

Catalog

6MHz, 600mA / 1A Synchronous Buck Regulator

Part	Voltage - Input (Min) [Min]	Package / Case	Output Configuration	Mounting Type	Frequency - Switching	Voltage - Input (Max) [Max]	Number of Outputs	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output	Function	Topology	Supplier Device Package [x]	Supplier Device Package	Supplier Device Package [y]	Output Type	Voltage - Output (Min/Fixed)
ON Semiconductor FAN53611AUC11X	2.3 V	6-UFBGA WLCSP	Positive	Surface Mount	6 MHz	5.5 V	1	85 °C	-40 °C	1 A	Step-Down	Buck	1.23	6-WLCSP	0.88	1.81 mOhm	1.1 V
ON Semiconductor FAN53611AUC13X	2.3 V	6-UFBGA WLCSP	Positive	Surface Mount	6 MHz	5.5 V	1	85 °C	-40 °C	1 A	Step-Down	Buck	1.23	6-WLCSP	0.88	1.81 mOhm	1.3 V
ON Semiconductor FAN53611AUC12X	2.3 V	6-UFBGA WLCSP	Positive	Surface Mount	6 MHz	5.5 V	1	85 °C	-40 °C	1 A	Step-Down	Buck	1.23	6-WLCSP	0.88	1.81 mOhm	1.2 V
ON Semiconductor FAN53611AUC135X	2.3 V	6-UFBGA WLCSP	Positive	Surface Mount	6 MHz	5.5 V	1	85 °C	-40 °C	1 A	Step-Down	Buck	1.23	6-WLCSP	0.88	1.81 mOhm	1.35 V
ON Semiconductor FAN53611AUC13X	2.3 V	6-UFBGA WLCSP	Positive	Surface Mount	6 MHz	5.5 V	1	85 °C	-40 °C	1 A	Step-Down	Buck	1.23	6-WLCSP	0.88	1.81 mOhm	1.3 V

Catalog

6MHz, 600mA / 1A Synchronous Buck Regulator

Key Features

• "600 mA or 1 A Output Current Capability

• 24 µA Typical Quiescent Current

• 6 MHz Fixed-Frequency Operation

• Best-in-Class Load Transient Response

• Best-in-Class Efficiency

• 2.3 V to 5.5 V Input Voltage Range

• 0.8 V to 2 V Fixed Output Voltage

• Low Ripple Light-Load PFM Mode

• Forced PWM and External Clock Synchronization

• Internal Soft-Start

• Input Under-Voltage Lockout (UVLO)

• Thermal Shutdown and Overload Protection

• Optional Output Discharge

• 6-Bump WLCSP, 0.4 mm Pitch"

Description

"The FAN53601/11 is a 6 MHz, step-down switching voltage regulator, available in 600 mA or 1 A options, that delivers a fixed output from an input voltage supply of 2.3 V to 5.5 V. Using a proprietary architecture with synchronous rectification, the FAN53601/11 is capable of delivering a peak efficiency of 92%, while maintaining efficiency over 80% at load currents as low as 1 mA.The regulator operates at a nominal fixed frequency of 6 MHz, which reduces the value of the external components to as low as 470 nH for the output inductor and 4.7 µF for the output capacitor. In addition, the Pulse Width Modulation (PWM) modulator can be synchronized to an external frequency source.At moderate and light loads, Pulse Frequency Modulation (PFM) is used to operate the device in Power-Save Mode with a typical quiescent current of 24 µA. Even with such a low quiescent current, the part exhibits excellent transient response during large load swings. At higher loads, the system automatically switches to fixed-frequency control, operating at 6 MHz. In Shutdown Mode, the supply current drops below 1 µA, reducing power consumption. For applications that require minimum ripple or fixed frequency, PFM Mode can be disabled using the MODE pin.The FAN53601/11 is available in 6-bump, 0.4 mm pitch, Wafer-Level Chip-Scale Package (WLCSP)."