Product Details
starting voltage
-
turn off voltage
-
starting current
-
Input voltage range
-
switching frequency
-
output voltage accuracy
-
Built in power transistor
-
package
SSOP24
- A programmable switching power supply chip combining analog and digital circuits
- The chip is equipped with a built - in encrypted ID code to safeguard the programs developed by the customer's MCU
- It has built - in Buck step - down module, Boost step - up module, and power PMOS and NMOS drivers with a driving current of ±100mA
- The analog circuit constitutes functions such as the voltage loop, current loop, and cycle - by - cycle current limiting of the switching power supply
- After the digital circuit configures the reference values of the analog loops, it automatically accomplishes functions like voltage regulation, constant current, current limiting, and short - circuit protection
- The synchronous free - wheeling function can be configured
- The MOS tube dead - time generator can be configured, with an adjustable dead - time range of 30nS - 350nS
- It has a 2.5V reference voltage source with an accuracy of ±1%
- The PWM clock oscillator can be configured, with a configurable range of 42KHz - 500KHz
- There are two configurable cycle - by - cycle current limiting comparators, which effectively protect the peak currents of the power PMOS and NMOS, with a configurable range of 50mV - 250mV
- There is one configurable voltage - loop operational amplifier reference, with a configurable range of 4.2V - 5.5V
- There are two configurable constant - current loop operational amplifier references, with a configurable range of 1mV - 122mV
- There is one configurable current - loop amplifier and ramp compensation circuit
- The short - circuit protection controller can be configured, including the short - circuit detection delay time and release method, with a configurable delay time range of 3uS - 213uS
- The external MCU configures the internal registers of the chip via the I²C bus
- It has an 8 - channel input, 10 - bit ADC analog - to - digital converter, and one optional configurable gain input pre - amplifier
- It has a built - in chip temperature sensor, allowing the external MCU to read the internal temperature of the chip
- There are five configurable LED constant - current drivers, no external current - limiting resistors are needed, and the constant current can be set in the range of 0.5mA - 6mA
- There is one high - power LED driver, with an external current - limiting resistor and a maximum current of 100mA
- It has a wide operating voltage range of +2.5V - +5.5V
- Package form: SSOP24.
- Mobile phone power bank
- Intelligent and non intelligent chargers for electric vehicles
- Lithium battery charger
- Buck step-down power supply
- Mobile device power system
- Boost boost power supply
- AC/DC switching power supply
- Programmable digital power supply
A programmable switching power supply chip that combines analog and digital technologies. It integrates various functional modules internally, such as a Buck/Boost module, a power MOS driver, a reference voltage source, an oscillator, an error amplifier, and an ADC.