HUSB251

Data Sheet

©2023 Hynetek Semiconductor Co., Ltd. All rights reserved.

Page 14 of 21

80uA

10k

ADC

OTP

Figure 5. OTP Detection

THERMAL SHUT DOWN

When the junction temperature rises across TTSD, thermal shut down takes action and the GATE is disabled. When the

junction temperature falls across TTSD-TTSD_HYS, the HUSB251 is reset to default mode and will automatic recover

again.

ANALOG-DIGITAL CONVERTER

Configured as Source or Toggled as Source:

The HUSB251 supports various fast charging protocols including PD2.0,PD3.0, BC1.2 DCP, Divider 3, QC 2.0/3.0

Class A, AFC, FCP, SCP and UFCS. According to the different status of D+ and D- pins, the HUSB251 recognizes the

attached Sinks and apply the fast charging protocol automatically.

Configured as Source or Detected as Source:

Configured as Sink or Toggled as Sink:

The HUSB251 supports PD2.0, PD3.1, BC1.2;

GPIO

GPIO pins are for general purpose. GPIO pins can be configured in different work mode per the firmware settings.

GPIO pins can be worked as:

Interrupt Input: the GPIO pin is a digital input pin, any digital logic level transition of GPIO pin can be configured a

interrupt source to notify the MCU.

Output Pin: the GPIO pin is a digital output pin, the output state can be determined by the firmware.

ADC Input: the GPIO pin is an analog input pin, the input voltage can be sampled by ADC and reported to the MCU.

INT

ADC

Pull UP

Pull

Down

Open Drain

Direct output

I2C

UART

GPIO0

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GPIO1

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GPIO2

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GPIO3

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GPIO4

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GPIO5

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GPIO6

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GPIO7

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