SGM41664
Efficient I2C Power Backup Manager with High Current Bidirectional DC/DC Converter and Capacitor Measurement Capability
The SGM41664 is a programmable power management IC with I2C interface and integrated analog-to-digital converter (ADC) for applications that need backup power or energy storage capability such as solid-state drivers (SSD). For example, in an SSD the power is needed for a few milliseconds after an unexpected supply loss to complete any remaining write action. The integrated efficient bidirectional synchronous Buck converter/Boost charger is capable of charging storage capacitors to as high as 36V from a 2.8V to 16V input source. A quasi-fixed frequency and constant off time controller provides fast transient response and excellent converter stability.
An integrated reverse blocking MOSFET (BLKFET) in the input allows blocking of energy leaking back to the removed source. The BLKFET has a programmable current limit in the range of 1.2A to 6.2A. BUS over-voltage protection threshold is selected based on the input source nominal voltage (3.3V, 5V or 12V) by strapping the OVP pin. The I2C interface is used to set the input current limit, switching frequency, Boost peak current limit and for measuring the storage capacitance and ESR. It is also used to monitor system variables and statuses, such as input voltage, input current, BUS voltage and storage voltage.
The SGM41664 is available in a Green TQFN-4×4-25L package to allow compact layout design and better space saving for higher SSD memory capacity.
- Wide 2.8V to 16V Input Voltage Range
- Up to 36V Programmable Storage Voltage
- Up to 6.2A Programmable Input Current Limit
- Efficient Bidirectional DC/DC Converter
- Low RDSON for Internal MOSFETs
Input Reverse Blocking MOSFET (BLKFET): 14mΩ
High-side/Low-side MOSFETs: 45mΩ/47mΩ
STR Disconnect MOSFET (STRFET): 35mΩ - Adjustable BLKFET Turn-On Delay and Soft-Start
- Adjustable Quasi-Fixed Frequency: 0.25MHz to 1.5MHz
- Constant Off-Time Control in Steady State
- Programmable Boost Charging Peak Current
- Autonomous or I2C Modes for Optimal Operation
- Complete Voltage and Current ADC Conversion
- Selectable Input Over-Voltage Protection
- Input Reverse Blocking to Block Leakage Current
- Short-Circuit Protection at Energy Storage Side
- Storage Capacitance Measurement
- Abnormal ESR Detection
Solid-state Drivers
Power Backup Systems
Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM41664XTRQ25G/TR | Active | TQFN-4×4-25L | 25 | YES | YES | YES | YES | MSL3 | -40℃ to +125℃ | View | View | 1-24 units : $17.5/unit 25-99 units : $15/unit 100-249 units : $12.5/unit 250-499 units : $10/unit 500-999 units : $8.75/unit 1000-9999 units : $6.5/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 70 days 1000K and above : 98 days |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
