EG Micro EG1503

The EG1503 integrates a high-precision 2.5V voltage reference, a configurable 42KHz ~ 500KHz wide-range oscillator, configurable multi-channel error amplifiers, a Buck/Boost switching power supply control module, an 8-channel 10-bit ADC, an I²C bus controller, a digital control module, an LED constant-current driver, and a power MOSFET driver. The EG1503 is a programmable analog-digital hybrid switching power supply IC featuring low power consumption and high flexibility. With a single low-cost 8-pin MCU (no ADC capability required), it enables an advanced power management system, making it ideal for mobile devices and battery management applications.

• Programmable switching power supply IC combining analog and digital circuits
• Built-in encrypted ID code protecting customer MCU firmware
• Integrated Buck step-down module, Boost step-up module, and power PMOS/NMOS drivers with ±100mA drive current
• Analog circuitry implementing voltage loop, current loop, and cycle-by-cycle current limiting for switching power supply
• Digital circuitry configures analog loop reference values, automatically enabling voltage regulation, constant current, current limiting, and short-circuit protection
• Configurable synchronous freewheeling function
• Configurable MOS gate dead-time generator, adjustable dead-time range: 30nS ~ 350nS
• 2.5V reference voltage source, ±1% accuracy
• Configurable PWM clock oscillator, adjustable range: 42KHz ~ 500KHz
• 2 configurable cycle-by-cycle current limiting comparators for peak current protection of power PMOS and NMOS, adjustable range: 50mV ~ 250mV
• 1 configurable voltage loop op-amp reference, adjustable range: 4.2V ~ 5.5V
• 2 configurable constant current loop op-amp references, adjustable range: 1mV ~ 122mV
• 1 configurable current loop amplifier with slope compensation circuit
• Configurable short-circuit protection controller with adjustable detection delay time and release mode, delay range: 3uS ~ 213uS
• External MCU configures internal registers via I²C bus
• 8-channel input, 10-bit ADC with 1 selectable configurable-gain input pre-amplifier
• Built-in die temperature sensor, supports external MCU readout of internal chip temperature
• 5 configurable LED constant current drivers, no external current-limiting resistors required, adjustable constant current range: 0.5mA ~ 6mA
• 1 high-power LED driver with single external current-limiting resistor, maximum current 100mA
• Wide operating voltage range: +2.5V ~ +5.5V
• Package: SSOP24

• Mobile power banks
• Electric vehicle smart and non-smart chargers
• Lithium battery chargers
• Buck converters
• Mobile device power systems
• Boost converters
• AC/DC switching power supplies
• Programmable digital power supplies