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Renesas P9122-00NBGI8
- Part No.:
- P9122-00NBGI8
- Manufacturer:
- Renesas
- Category:
- Power Management - Specialized
- Package:
- -
- Datasheet:
-
P9122-00NBGI8.pdf
- Description:
- IC PMIC PWR MGMT MULTI-CH 24NGB
- Quantity:
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Product details
Overview
P9122-00NBGI8 from Renesas Electronics (formerly IDT) is a dual-channel synchronous step-down power management IC with integrated high- and low-side MOSFETs, delivering 2A on Buck1 and 3A on Buck2 from a single 2.7V–5.5V input. It supports factory-programmable output voltages (0.8V–3.4V), 2MHz switching frequency, and configurable Buck/Switch mode for VOUT2 - used in SSD power rails, portable gaming systems, and USB-powered set-top boxes.
For engineers reviewing the P9122-00NBGI8 datasheet, P9122-00NBGI8 pinout, P9122-00NBGI8 application, or P9122-00NBGI8 equivalent, key selection criteria include per-channel current capability (2A/3A), OTP-configurable sequencing, thermal shutdown at 135°C, QFN-24 4×4mm package with exposed pad, and support for both PFM/PWM and forced PWM operation across -40°C to +85°C ambient.
Technical Context
The P9122-00NBGI8 integrates two independent buck regulators sharing a common VIN supply but with separate PVIN1/PVIN2 inputs and dedicated LX/PGND paths. Buck2's function is dynamically reconfigurable via VINSEL pin: logic low enables standard buck regulation; logic high configures it as a switch-mode pass element with VPVIN2 input routed to VOUT2.
Operation includes three power states (ON, SLEEP, STANDBY) controlled by DEVSLPIN and GPIO14, plus four OTP-programmable control modes (Mode 0–3) governing enable logic, sequencing order, PORB generation, and PG signal routing - all implemented via one-time programmable fuse banks T2 and T3 without external configuration pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V–5.5V - supports direct connection to 3.3V or 5V system rails without pre-regulation. |
| Buck1 Output Current | 2A continuous - sufficient for core voltage rail of low-power SoCs or DDR memory termination. |
| Buck2 Output Current | 3A continuous in Buck mode - enables main I/O or interface rail in SSD or portable devices. |
| Switching Frequency | 2MHz ±5% - allows use of compact 1μH inductors and reduces output capacitor count. |
| Output Voltage Range | 0.8V–3.4V in 25mV steps - covers standard logic I/O (1.8V, 3.3V), DDR (1.2V, 1.35V), and analog subsystems. |
| Thermal Shutdown | 135°C junction - protects against sustained overload or poor PCB thermal design in sealed enclosures. |
| Quiescent Current | <1μA in sleep mode - extends battery life in always-on standby applications like remote controls or sensors. |
Pinout & Package
Package: QFN-24, 4mm × 4mm × 0.75mm body height, 2.8mm × 2.8mm exposed thermal pad (EP), RoHS-compliant, MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN, Pins 10 & 24 | Device supply input | Powers internal logic, bias circuits, and gate drivers; requires 2.2μF X7R ceramic bypass close to pin. |
| PVIN1, Pin 9 | Buck1 power input | Supplies high-side/low-side FETs for Buck1; must be decoupled with ≥10μF X7R capacitor. |
| PVIN2, Pins 22 & 23 | Buck2 power input | Supplies Buck2 FETs; dual-pin layout supports higher current delivery and lower impedance path. |
| VINSEL, Pin 4 | Function select input | Logic level determines Buck2 operating mode: LOW = buck regulator, HIGH = switch-mode pass element. |
| DEVSLPIN, Pin 5 | Sleep mode control | Active-HIGH entry into ultra-low-IQ sleep state; disables both regulators while retaining OTP and register state. |
| FB1 / FB2, Pins 6 & 18 | Output voltage feedback | Direct connection point for closed-loop regulation; no external resistor divider needed due to factory-programmed reference. |
| LX1 / LX2, Pins 7 & 20–21 | Switch node outputs | Connect to 1μH inductors; high dv/dt nodes requiring short, low-inductance PCB traces and ground shielding. |
| GPIO14–17 / GPI3 / GPO16, Pins 14–17, 3, 16 | Configurable I/O | Multi-function pins supporting enable, power-good, POR, sequencing, and standby control - behavior defined by OTP Mode[1:0]. |
Key Features
| Feature | Design Value |
|---|---|
| Dual integrated FET buck regulators | Eliminates 4 external MOSFETs and associated gate drive circuitry - reduces BOM count and layout area by >30% vs discrete solutions. |
| Factory-programmable output voltages | OTP-configured VOUT1/VOUT2 from 0.8V–3.4V in 25mV steps - enables single SKU to serve multiple end-product variants without hardware change. |
| Selectable Buck/Switch mode for Buck2 | Enables flexible power architecture: Buck mode for regulated 3.3V rail; Switch mode for low-dropout pass-through of 3.3V input to VOUT2 with minimal voltage loss. |
| Configurable sequencing and power-good signaling | Four OTP-defined control modes (Mode 0–3) support individual enable, master-enable with delay, and standby-aware ramp-up/down - critical for multi-rail SoC boot compliance. |
| Ultra-low sleep quiescent current | <1μA device IQ in sleep mode - extends runtime in battery-backed applications such as SSDs during host suspend states. |
Applications
| Solid State Disk (SSD) Power Management | Portable Gaming Console |
|---|---|
Use Scenario: Regulating independent 1.2V NAND flash core and 3.3V I/O rails in M.2 NVMe SSD modules with tight thermal constraints. IC Role / Device Role / Timing Role: Dual-buck PMIC providing sequenced, OTP-programmed voltage rails with Power Good assertion before host controller initialization. Use Value: Enables single-chip power solution meeting JEDEC U.2 timing requirements for VDD/VDDQ ramp rates and hold times without external sequencing IC. | Use Scenario: Powering ARM-based application processor (1.1V core), GPU (1.0V), and display interface (1.8V) in handheld game systems with battery-saver modes. IC Role / Device Role / Timing Role: Primary system PMIC managing dynamic voltage scaling, sleep-state entry/exit, and brown-out detection across three critical rails. Use Value: Reduces standby current to sub-μA levels and supports fast wake-from-sleep (<10ms) via configurable soft-start ramp rates (4–16 mV/μs). |
| USB-Powered Set-Top Box | Low-Power IoT Hub |
Use Scenario: Deriving stable 1.8V HDMI PHY and 3.3V USB 2.0 transceiver rails from a single 5V USB-C PD source in compact media adapters. IC Role / Device Role / Timing Role: Dual-output DC-DC converter with integrated FETs and 2MHz switching - minimizing EMI near sensitive RF receivers. Use Value: Achieves >92% peak efficiency at 500mA load per channel while maintaining <15mV PFM-mode output offset - ensuring clean signal integrity for HDMI and USB data lines. | Use Scenario: Supplying 3.3V microcontroller, 1.8V sensor interface, and 2.5V wireless SoC in battery-operated smart home hubs with multi-year shelf life. IC Role / Device Role / Timing Role: Low-quiescent-current PMIC supporting deep-sleep states, programmable wake triggers, and OTP-locked voltage settings for field-replaceable modules. Use Value: Delivers <1μA sleep IQ and supports OTP-configurable GPIO14 as STANDBY input - enabling firmware-controlled rail shutdown without MCU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RSBR | Triple-output PMIC (2 buck + 1 LDO); fixed 1.2V/1.5V/1.8V outputs; no OTP programming; 3MHz switching. | Targeted at OMAP3-based embedded systems; lacks Buck2 switch-mode option and programmable sequencing delays. | Choose when fixed-voltage, triple-rail support is required and OTP flexibility is unnecessary. |
| RTQ2132BGQW | Dual 3A/3A buck with I²C interface, real-time telemetry, and adaptive COT control; 2.5V–5.5V input; QFN-26 package. | Designed for cloud-edge AI modules requiring telemetry and dynamic loop adjustment; no VINSEL-based switch-mode mode. | Choose when digital interface, load transient response monitoring, or higher current symmetry is prioritized over OTP-based cost optimization. |
Compared with TPS65023RSBR and RTQ2132BGQW, the P9122-00NBGI8 uniquely combines OTP-programmable voltages, VINSEL-configurable Buck2 functionality, and sub-μA sleep IQ in a 24-pin QFN - making it optimal for high-volume, cost-sensitive, and thermally constrained portable designs where hardware configurability replaces firmware overhead.
Availability
P9122-00NBGI8 is available at Aetrix Electronics and suitable for solid-state disk drive power management, portable gaming console subsystems, and USB-powered set-top boxes requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production lots.
Supply support for P9122-00NBGI8 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader delivering trusted embedded design innovation, with roots in IDT's high-performance analog and power management portfolio acquired in 2019.
The P9122-00NBGI8 belongs to Renesas' legacy IDT Power Management IC family, engineered specifically for space-constrained, multi-rail consumer and computing applications demanding high integration, low quiescent power, and factory-programmable flexibility.
FAQ
What is the maximum continuous output current supported by each channel of the P9122-00NBGI8?
The P9122-00NBGI8 delivers up to 2A continuously on Buck1 and 3A continuously on Buck2 under TJ < 115°C conditions. These ratings assume proper PCB thermal design with the exposed pad soldered to a 4-layer board using a 3×3 thermal via array, as specified in the thermal characterization data (θJA = 40°C/W). Derating applies above 85°C ambient.
How is output voltage configured on the P9122-00NBGI8, and can it be changed after soldering?
Output voltage on the P9122-00NBGI8 is factory-programmed into one-time programmable (OTP) memory during final test - supporting 0.8V to 3.4V in 25mV increments for both VOUT1 and VOUT2. Once programmed, the values are permanent and cannot be altered in-circuit. Evaluation units may be reprogrammed using the IDTP9122-EVAL kit and GUI software prior to production release.
Does the P9122-00NBGI8 support power sequencing between its two outputs, and how is it implemented?
Yes, the P9122-00NBGI8 supports programmable power sequencing via OTP configuration (Mode 2 or Mode 3). Sequencing delays (0.5ms–4ms) and order (e.g., Buck2 → Buck1, Buck1 → wait → Buck2) are defined in OTP banks T2 and T3. The device uses internal state machines - not external timers - to execute ramp-up/ramp-down sequences, with PG signals indicating rail readiness.
What is the function of the VINSEL pin on the P9122-00NBGI8, and how does it affect Buck2 operation?
The VINSEL pin (Pin 4) selects Buck2's operational mode: logic LOW configures it as a standard synchronous buck regulator (0.8V–3.4V output); logic HIGH configures it as a switch-mode pass element, routing VPVIN2 directly to VOUT2 with minimal dropout (typ. <100mV at 2.4A). This dual-mode capability enables flexible system-level power architecture without adding external switches.
Can the P9122-00NBGI8 operate in forced PWM mode, and how is this enabled?
Yes, the P9122-00NBGI8 supports forced PWM mode for both Buck1 and Buck2, eliminating low-load PFM frequency variation and associated audio noise. This is enabled via OTP bits T2[2] (Buck1) and T2[8] (Buck2), which override the default auto-switching behavior. Forced PWM is recommended for noise-sensitive applications like audio codecs or RF front-ends where consistent switching frequency is critical.
P9122-00NBGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Current - Supply:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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P9122-00NBGI8 FAQ
1.How can I place an order for P9122-00NBGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for P9122-00NBGI8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P9122-00NBGI8 reliable?
The price and inventory of P9122-00NBGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P9122-00NBGI8 is usually 5 days.
3.What payment methods are accepted for P9122-00NBGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P9122-00NBGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P9122-00NBGI8?
P9122-00NBGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P9122-00NBGI8 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P9122-00NBGI8?
For technical support, including P9122-00NBGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P9122-00NBGI8 requirements.
6.How does Aetrix verify that P9122-00NBGI8 is sourced from the original manufacturer or authorized distributors?
All P9122-00NBGI8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P9122-00NBGI8 meets industry standards.
7.What is the process for return or replacement of P9122-00NBGI8?
All P9122-00NBGI8 units undergo pre-shipment inspection (PSI). If there is an issue with P9122-00NBGI8, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P9122-00NBGI8 part is unused and in its original packaging.
Return procedure for P9122-00NBGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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