The MIC2826 is a four output, programmable Power Management IC, optimized for high efficiency power support in Mobile Application Processors, Co-Processors, DSPs, GPS and Media Player chipsets. The device integrates a single 500mA PWM/PFM synchronous buck (step-down) regulator with three Low Dropout Regulators and a 400kHz I²C interface that provides programmable Dynamic Voltage Scaling (DVS), Power Sequencing, and individual output Enable/Disable controls allowing the user to optimally control all four outputs. The 4MHz synchronous buck regulator features a patented HyperLight Load® (HLL) architecture which minimizes switching losses and provides low quiescent current operation for high efficiency at light loads. Additional benefits of this proprietary architecture are low output ripple voltage and fast transient response throughout the entire load range with the use of small output capacitors, reducing the overall system size.Three high performance LDOs are integrated into the MIC2826 to provide additional system voltages for I/O, memory and other analog functions. Each LDO is capable of sourcing 150mA output current with high PSRR and low output noise. A 2% output voltage accuracy, low dropout voltage (150mV @ 150mA), and low ground current of 116µA (all three LDOs operating) makes this device ideally suited for mobile applications.
Additional Features
Fast-mode I2C control interface
Default start-up voltage states and sequencing
Fault indication processor flag - IRQb
-40°C to 125°C junction temperature range
Thermal shutdown and current-limit protection
Power On After Fault (POAF) function DC-DC Synchronous Buck
2.7V to 5.5V input voltage range
500mA continuous output current
HyperLight Load® mode
25µA quiescent current
90% peak efficiency; 85% at 1mA
Ultra-fast transient response
Dynamic Voltage Scaling (DVS) range: 0.8V to 1.8V
0.8V to 1.2V in 25mV steps
1.2V to 1.8V in 50mV steps
±2% initial accuracy
Low output voltage ripple: 20mVpp in HyperLight Load®mode, 3mV in full PWM mode LDOs
1.8V to VDVIN input voltage range
150mA output current (each LDO)
Dynamic Voltage Scaling (each LDO)
DVS range: 0.8V to 3.3V in 50mV steps
±2% initial accuracy
Low quiescent current: 50µA (each LDO)
Low dropout voltage: 50mV @ 50mA
Low output noise: 45µVrms
Stable with ceramic output capacitors
65dB PSRR at 1kHz
The MIC2826 is a four output, programmable Power Management IC, optimized for high efficiency power support in Mobile Application Processors, Co-Processors, DSPs, GPS and Media Player chipsets. The device integrates a single 500mA PWM/PFM synchronous buck (step-down) regulator with three Low Dropout Regulators and a 400kHz I²C interface that provides programmable Dynamic Voltage Scaling (DVS), Power Sequencing, and individual output Enable/Disable controls allowing the user to optimally control all four outputs. The 4MHz synchronous buck regulator features a patented HyperLight Load® (HLL) architecture which minimizes switching losses and provides low quiescent current operation for high efficiency at light loads. Additional benefits of this proprietary architecture are low output ripple voltage and fast transient response throughout the entire load range with the use of small output capacitors, reducing the overall system size.Three high performance LDOs are integrated into the MIC2826 to provide additional system voltages for I/O, memory and other analog functions. Each LDO is capable of sourcing 150mA output current with high PSRR and low output noise. A 2% output voltage accuracy, low dropout voltage (150mV @ 150mA), and low ground current of 116µA (all three LDOs operating) makes this device ideally suited for mobile applications.
Additional Features
- Fast-mode I2C control interface
- Default start-up voltage states and sequencing
- Fault indication processor flag - IRQb
- -40°C to 125°C junction temperature range
- Thermal shutdown and current-limit protection
- Power On After Fault (POAF) function
DC-DC Synchronous Buck
- 2.7V to 5.5V input voltage range
- 500mA continuous output current
- HyperLight Load® mode
- 25µA quiescent current
- 90% peak efficiency; 85% at 1mA
- Ultra-fast transient response
- Dynamic Voltage Scaling (DVS) range: 0.8V to 1.8V
- 0.8V to 1.2V in 25mV steps
- 1.2V to 1.8V in 50mV steps
- ±2% initial accuracy
- Low output voltage ripple: 20mVpp in HyperLight Load®mode, 3mV in full PWM mode
LDOs
- 1.8V to VDVIN input voltage range
- 150mA output current (each LDO)
- Dynamic Voltage Scaling (each LDO)
- DVS range: 0.8V to 3.3V in 50mV steps
- ±2% initial accuracy
- Low quiescent current: 50µA (each LDO)
- Low dropout voltage: 50mV @ 50mA
- Low output noise: 45µVrms
- Stable with ceramic output capacitors
- 65dB PSRR at 1kHz
