HC2001 specification

1 typical functions

1.5 A continuous output current ability to wide input voltage of 4.5 V to 36 V

With 33 v input function of OVP internal integration with 36 v, 250 m Ω tube and 36 v,

140 m Ω tube, up to 95% efficiency, constant current constant voltage loop control

can be adjusted by external resistance current limit value and the output line

 internal soft start to avoid the start time of current overshoot

 internal soft start, built-in loop compensation function makes the whole application circuit is very concise

all-round protection function: the input voltage, input overvoltage and output overvoltage,

Output overcurrent, output short circuit, upper tube transient current limit, lower tube transient

State current limitation, overtemperature protection

Pulse skip mode light load efficiency model

can use low ESR ceramic output capacitance

fixed switching frequency 150 KHZ

2 typical applications

USB car charger

a portable charging device

universal high-pressure USB charger

general high voltage DC/DC conversion applications

3 functional description

HC2001 is an internal integrated upper and lower MOS rectifier drop

Pressure - type high efficiency switch converter, upper and lower tube specifications are 36V

Pressure / 250 m Ω resistance, pressure 36 v / 140 m Ω internal resistance. The converter can

Output 1.5a continuous current in A wide input voltage range of 4.5v ~36V.

The internal peak current control mode enables the chip to achieve fast speed

Dynamic response requirements. At the same time, HC2001 integrated line and internal complement

Compensation circuit and output current limit set by external resistance. CC/CV

The control circuit ensures smooth output between constant pressure and constant flow control

The switch. The built-in soft starter circuit can well limit when the chip starts

Input startup overshoot current.