UCD9090 - 10-Rail Power Sequencer & Monitor | Texas Instruments
MPN: UCD9090 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.12 | $3,060.00 |
| 1,000 | $5.5 | $5,500.00 |
Drop-in alternatives for UCD9090 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
UCD9090A
β Drop-Inπ Reference alternative (not in catalog)
UCD9090QRGZRQ1
β Drop-Inπ Reference alternative (not in catalog)
UCD9090RGZR
β Drop-Inπ Reference alternative (not in catalog)
UCD9090RGZT
β Drop-Inπ Reference alternative (not in catalog)
UCD9081
β Drop-Inπ Reference alternative (not in catalog)
UCD9090 Maximum Ratings & Electrical Characteristics
| Number of Channels | 10 |
| ADC Resolution | 12-bit |
| Interface | PMBus/I2C |
| GPIO Pins | 23 |
| PWM Pins | 10 |
| Package | 48-VQFN (7x7) |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
| Supply Voltage | [DATA_NEEDED: supply voltage] |
| Sequencing Accuracy | [DATA_NEEDED: sequencing accuracy] |
| Fault Response Time | [DATA_NEEDED: fault response time] |
| ACPI Support | Yes |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| REACH Status | Compliant |
| AEC-Q100 Qualified | No (standard version) |
UCD9090 Pin Configuration
| Pin 1 | V33 β 3.3V supply for internal logic |
| Pin 2 | GND β Ground |
| Pin 3 | GPIO0 β General purpose I/O, can be used as enable or interrupt |
| Pin 4 | GPIO1 β General purpose I/O, can be used as enable or interrupt |
| Pin 5 | GPIO2 β General purpose I/O, can be used as enable or interrupt |
| Pin 6 | GPIO3 β General purpose I/O, can be used as enable or interrupt |
| Pin 7 | GPIO4 β General purpose I/O, can be used as enable or interrupt |
| Pin 8 | GPIO5 β General purpose I/O, can be used as enable or interrupt |
| Pin 9 | GPIO6 β General purpose I/O, can be used as enable or interrupt |
| Pin 10 | GPIO7 β General purpose I/O, can be used as enable or interrupt |
| Pin 11 | GPIO8 β General purpose I/O, can be used as enable or interrupt |
| Pin 12 | GPIO9 β General purpose I/O, can be used as enable or interrupt |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
UCD9090 is suitable for 6 applications: Server Power Sequencing, Networking Equipment Power Management, Telecommunications Base Station Power, Industrial Control Systems, Automotive Power Management, FPGA and ASIC Power Sequencing.
Server Power Sequencing
The UCD9090 sequences up to 10 power rails in server systems, ensuring correct power-up order to prevent latch-up and damage. Its 12-bit ADC monitors each rail, and PMBus interface allows real-time telemetry. With 23 GPIOs and 10 PWM outputs, it can control enables and margining, making it ideal for high-density computing platforms where reliable power sequencing is critical.
Recommended
Networking Equipment Power Management
In networking switches and routers, the UCD9090 manages power sequencing for multiple ASIC and FPGA rails. Its PMBus interface enables remote monitoring and control, while the 12-bit ADC ensures accurate voltage supervision. The device's GPIO pins can be used for reset and interrupt signals, and its PWM outputs support dynamic voltage scaling, enhancing energy efficiency in always-on infrastructure.
Recommended
Telecommunications Base Station Power
The UCD9090 ensures reliable power sequencing in telecom base stations, where multiple voltage rails must be controlled precisely. Its 10-channel capability and 12-bit ADC provide accurate monitoring, while PMBus allows integration with system management. The device's wide operating temperature range and robust fault handling make it suitable for outdoor and industrial environments.
Recommended
Industrial Control Systems
In industrial automation, the UCD9090 sequences and monitors power rails for PLCs, motor drives, and robotics. Its GPIO pins can be configured for enable signals and fault interrupts, while the 12-bit ADC ensures precise voltage monitoring. The device's PMBus interface allows for configuration and diagnostics, improving system reliability and reducing downtime.
Recommended
Automotive Power Management
The UCD9090-Q1 variant is AEC-Q100 qualified for automotive applications, making it suitable for ADAS, infotainment, and body control modules. It sequences multiple rails in safety-critical systems, ensuring proper power-up and shutdown sequences. The 12-bit ADC and PMBus interface enable precise monitoring and diagnostics, meeting stringent automotive reliability requirements.
Recommended
FPGA and ASIC Power Sequencing
FPGAs and ASICs often require multiple voltage rails with specific sequencing requirements. The UCD9090 provides up to 10 channels, each with programmable sequencing delays and slew rates. Its 12-bit ADC monitors each rail, and the PMBus interface allows for dynamic voltage scaling. This ensures reliable operation of high-performance digital logic in applications like data centers and signal processing.
Recommended
Recommended Products Summary
Engineering reference data for UCD9090 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | UCD9090A | UCD9090QRGZRQ1 | UCD9081 |
|---|---|---|---|---|
| Package | 48-VQFN (7x7) | 48-VQFN (7x7) | 48-VQFN (7x7) | 48-VQFN (7x7) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Channels | 10 | 10 | 10 | 8 |
| ADC Resolution | 12-bit | 12-bit (improved accuracy) | 12-bit | 12-bit |
| Automotive Grade | No | No | Yes (AEC-Q100) | No |
| PWM Outputs | 10 | 10 | 10 | [DATA_NEEDED] |
| ACPI Support | Yes | Yes | Yes | [DATA_NEEDED] |
| Price (1pc) | $8.50 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- 10-channel sequencing with 12-bit ADC (vs UCD9081)
- Automotive grade option (vs UCD9090A)
- Enhanced version available (vs UCD9090A)
Design Notes
Ensure the V33 pin is supplied with a clean 3.3V source. Use a 100nF decoupling capacitor close to the pin and a 10uF bulk capacitor nearby. The UCD9090's internal ADC accuracy depends on a stable reference, so avoid sharing the V33 supply with noisy digital loads.
Place the UCD9090 close to the power rails it monitors to minimize trace inductance and noise pickup. Use separate analog ground and digital ground planes, connecting them at a single point. Route PMBus lines with proper termination and keep them away from high-current switching paths.
Configure the sequencing parameters and fault thresholds via PMBus before enabling the rails. Incorrect configuration can cause improper sequencing, leading to system failures. Also, ensure that the GPIO pins used for enables are not left floating; use pull-up or pull-down resistors as needed.
Compliance Information
RoHS and REACH compliant per TI product page. Standard version is not AEC-Q100 qualified; use UCD9090QRGZRQ1 for automotive.
