The TPS659122 device provides four configurable step-down converters with up to 2.5A output current for memory, processor core, I/O, or pre-regulation of LDOs. It also contains 10 LDO regulators for external usage which can be supplied from either a battery or a pre-regulated supply. Power-up/power-down controller is configurable and can support any power-up/power-down sequences (OTP based).
TPS659122 integrate a 32 kHz RC Oscillator to sequence all resources during Power up / down. All LDOs and DCDC converters can be controlled by I2C/SPI interface or Basic ENABLE Balls. In addition, an Independent automatic Voltage Scaling interface allows transitioning DCDC to different voltage by I2C or basic Roof/Floor Control. 3 RGB LED with advanced dimming feature are integrated inside the device.
Features
• 4 Step-Down Converters:
– VIN Range From 2.7V to 5.5V
– Power Save Mode at Light Load Current
– Output Voltage Accuracy in PWM Mode ±2%
– Typical 26 μA Quiescent Current per Converter
– Dynamic Voltage Scaling
– 100% Duty Cycle for Lowest Dropout
• 10 LDOs:
– 8 General Purpose LDOs
– Output Voltage Range 0.8V to 3.3V
– 2 Low Noise RF-LDOs
– Output Voltage Range 1.6V to 3.3V
– 32 μA Quiescent Current
– Pre-Regulation Support by Separate PowerInputs
– ECO mode
– VIN Range of LDOs:
• 1.8V to 3.6V or
• 3.0V to 5.5V, respectively
• 3 LED Outputs:
– Internal Dimming Using I2C
– Multiplexed with GPIOs
– Up to 20mA per Current Sink
• Thermal Monitoring
– High Temperature Warning
– Thermal Shutdown
• Bypass Switch
– Used with DCDC4 in Applications Powering an RF-PA
– As Supply Switch for e.g. SD cards
• Interface
– I2C Interface
– Power I2C Interface for Dynamic Voltage Scaling
– SPI
• 32kHz RC Oscillator
• Undervoltage Lockout and Battery Fault Comparator
