KP52220XA-Shenzhen Yifangda Electronics Co., Ltd

Yifangda Electronics Co., Ltd., Shenzhen

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KP52220XA

KP52220XA A 4.5V to 17V input, 2A output, 600kHz synchronous buck converter in a SOT23-6 package. The KP52220XA is a simple, easy-to-use, and highly efficient integrated synchronous buck converter. It features a wide input voltage range of 4.5V to 17V, making it ideal for various common input voltage rails such as 12V and 15V. It supports a continuous output current of up to 2A with an output voltage range of 0.768V to 7V. The KP522201A operates in Pulse Frequency Modulation (PFM) mode under light load to maintain high light load efficiency; the KP522208A operates in Forced Pulse Width Modulation (FPWM) mode to achieve a fixed switching frequency and low output ripple under full load current. The KP52220XA integrates comprehensive protection features, including Under Voltage Lockout (UVLO), Cycle-by-Cycle Current Limiting (OCL), Undervoltage Protection with Hiccup (UVP), Overvoltage Protection (OVP), and Over Temperature Protection (OTP), to ensure safe and reliable operation under various operating conditions. The KP52220XA is available in a small SOT23-6 package and operates over a junction temperature range of -40℃ to 125℃.

Category：

Biyi Microelectronics

Product Description

Commodity name: KP52220XA
封装: SOT23-6
品牌: Biyi Microelectronics

Main Features

• Wide input voltage range: 4.5V to 17V

• Output voltage range: 0.768V to 7V

• Supports 2A continuous output current

• Switching frequency of 600kHz in continuous inductor current mode

• Integrated low on-resistance MOSFET switches

• Low quiescent current: 190μA (no switching action, typical value)

• Low shutdown current: 2.5μA (typical value)

• Uses constant on-time control to achieve ultra-fast dynamic response

• Two light-load operating modes:

• KP522201A: Pulse Frequency Modulation (PFM)

• KP522208A: Forced Pulse Width Modulation (FPWM)

• High reference voltage accuracy: 0.768V ±1.5% @25℃

• Integrated comprehensive protection functions:

• Precise enable control and adjustable undervoltage lockout function

• Internal 1ms soft-start time to avoid overvoltage and overcurrent

• Cycle-by-cycle peak current limiting (OCL)

• Non-latching input undervoltage protection (UVLO), output undervoltage protection (UVP),

output overvoltage protection (OVP) and overtemperature protection (OTP)

• Compact solution size:

• Supports the use of MLCC ceramic capacitors and supports low output capacitance

• No external compensation required

• Small package type: SOT23-6

Product Model	Input Voltage Range(V)	Output Voltage Range(V)	Operating Frequency(kHz)	Output Current(A)	Reference Voltage(V)	Control Mode	Operating Mode	Features	Package

KP522201A	4.5~17	0.768~7	600	2	0.768±1.5%	COT	PFM	Ultra-fast transient response	SOT23-6

KP522208A	4.5~17	0.768~7	600	2	0.768±1.5%	COT	FPWM	Ultra-fast transient response	SOT23-6

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