|Information||Universal PMIC 3 Output Buck Regulator|
|VIN MIN (V)||4.5|
|VIN MAX (V)||14|
|# of Outputs||3|
|VOUT MIN (V)||0.8|
|VOUT MAX (V)||6|
|Junction Temp Range (°C)||-40 to 125|
|Gate Drive Pull Up/Down||3A / 2A / 2A|
|Programmable Frequency Range (MHz)||0.5|
|Additional Features||Light Load PFM, Enable, Over Current Protection, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO, Phase Interleaving, Clock Sync, Soft Start Built-in|
|X x Y Package Dimension (mm)||4x4|
|Control Mode||Current Mode PWM|
|Operating Temperature (°C)||-40 to 125|
|Set Point Resolution (mV)|
|Control Technology||Current Mode PWM/PSM|
The XR77103-A0R5 step-down regulator features three 2A synchronous high efficiency buck regulators with integrated power switches. They can operate in 5V, 9V and 12V powered systems with minimal required external component thus providing the smallest size solution possible. Two of the outputs may be paralleled for output currents up to 5A peak with steady state current of up to 4A.
The output voltage of each converter can be adjusted by external resistor divider down to voltage as low as 0.8V. With a nominal switching frequency of 500kHz, the regulators can also be synchronized to an external clock in applications where EMI control is critical.
XR77103-A0R5 features a supervisor circuit that monitors each converter output. PGOOD pin is asserted once sequencing is done, outputs are reported in regulation and the reset timer expires. The polarity of the signal is active high. A Pulse Skipping Mode (PSM) reduces switching losses maintaining high efficiency when the system is unloaded or in standby mode.
- 4.5V to 14V wide input supply voltage range
- Built-In MOSFET and synchronous rectifier
- Three 2A buck regulators
- Parallel operation allows two outputs in parallel for 5A peak output (4A steady state)
- 0.8V, high accuracy reference (1%)
- Current-mode control with simple compensation circuit
- External synchronization
- Power good
- Thermal shutdown
- Overvoltage transient protection
- Overcurrent protection
- 32pin TQFN package, 4mm x 4mm
- Pin-compatible 1MHz version (XR77103-A1R0)
- Pin-compatible programmable version (XR77103)
- Low power FPGA and DSP supplies
- Video processor supplies
- Home gateways
- Telecommunications and Infrastructure equipment
- Industrial control and automation
- Base stations, switches/routers
Documentation & Design Tools
|Data Sheets||XR77103-A0R5 Universal PMIC 3-Output Buck Regulator||REV1D||May 2019||1.6 MB|
|User Guides & Manuals||XR77103-A0R5 Evaluation Board Manual||R00||March 2022||3.9 MB|
Quality & RoHS
Parts & Purchasing
|Part Number||Pkg Code||Min Temp||Max Temp||Status||Suggested Replacement||Buy Now||Order Samples||PDN|
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.