Renesas P9145-I0NAGI

Overview

P9145-I0NAGI from IDT is a programmable multi-channel PMIC for Intel® Atom™ SoCs, integrating seven current-mode step-down converters (2 MHz switching), seven LDOs, 16 GPIOs, 10-bit ADC, SVID interface for IMVP7 compliance, and high-speed I2C control. It enables compact, low-BOM power delivery in embedded computing platforms requiring coordinated rail sequencing and scalable output current.

For engineers reviewing the P9145-I0NAGI datasheet, P9145-I0NAGI pinout, P9145-I0NAGI application, or P9145-I0NAGI equivalent, key selection factors include SVID/IMVP7 support, OTP-programmable power sequence, dual-row QFN-100 package compatibility, and distributed power scalability with IDTP9147 add-on sources.

Technical Context

The P9145-I0NAGI implements a host-controlled power architecture where the Intel Atom SoC communicates via SVID for dynamic VCC/VNN/VDDQ rail management and via high-speed I2C for full PMIC configuration, including OTP-stored default sequences. Its seven buck regulators operate at 2.0 MHz with current-mode control for fast transient response.

Power sequencing is fully programmable through OTP memory and executed by 12 dedicated enable outputs; system monitoring leverages the integrated 10-bit ADC and 16 GPIOs, while distributed current scaling is enabled by the IDTP9147-compatible interface-supporting modular expansion without host firmware changes.

Key Specifications

Pinout & Package

Package: 100-lead, 8 mm × 8 mm, dual-row QFN (NAG100, HLA type) with exposed thermal pad; RoHS-compliant, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-channel PMIC applications.

Compared with RTQ2134B-QA and TPS650944RSLR, the P9145-I0NAGI uniquely delivers IMVP7 SVID compliance, OTP-stored sequencing, and distributed current scaling-making it the only option for Intel Atom designs requiring zero-host-sequencing overhead and modular power expansion.

Availability

P9145-I0NAGI is available at Aetrix Electronics and suitable for Intel Atom-based embedded computing, industrial control units, network-attached storage controllers, and medical handheld devices requiring stable component supply and long-term lifecycle support.

Supply support for P9145-I0NAGI 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

Integrated Device Technology (IDT), now part of Renesas Electronics, specializes in timing, memory interface, RF, and power management semiconductors for communications, computing, and consumer markets.

The IDTP9145 product line was engineered specifically for Intel Atom SoC platforms, emphasizing minimal footprint, IMVP7 interoperability, and scalable distributed power delivery in space-constrained embedded systems.

FAQ

What is the operating temperature range for the P9145-I0NAGI?

The P9145-I0NAGI is rated for industrial temperature operation from –40°C to +85°C. This specification applies to the NAG100 package variant and is validated per JEDEC JESD22-A104. Thermal performance is maintained under full load across this range when used with recommended PCB layout and thermal pad soldering per IDT's AN-938 design guidelines. The P9145-I0NAGI maintains regulation accuracy and sequencing timing integrity throughout the specified range.

Does the P9145-I0NAGI support dynamic voltage scaling via SVID?

Yes, the P9145-I0NAGI supports full dynamic voltage scaling (DVS) and telemetry exchange via its native SVID interface compliant with IMVP7 protocol. It responds to SVID commands for VCC, VNN, and VDDQ rail adjustments, reports rail status and faults, and supports rapid transition between VID codes. This functionality is implemented in hardware and does not require I2C intervention during DVS events. The P9145-I0NAGI's SVID interface operates independently of its high-speed I2C configuration port.

Can the P9145-I0NAGI be used without an Intel Atom processor?

Yes, the P9145-I0NAGI can be used in non-Intel platforms, but SVID functionality will remain unused. All other features-including high-speed I2C configuration, 7 buck regulators, 7 LDOs, 16 GPIOs, 10-bit ADC, and OTP-programmable sequencing-remain fully operational. System designers must implement custom sequencing logic via I2C writes instead of relying on SVID handshaking. The P9145-I0NAGI retains its full power delivery capability regardless of host processor choice.

How many enable outputs does the P9145-I0NAGI provide, and what are their electrical characteristics?

The P9145-I0NAGI provides 12 dedicated enable outputs (EN1–EN12), each configured as an open-drain NMOS with 20 mA sink capability and 5.5 V absolute maximum rating. These outputs drive external MOSFET gates or enable pins of downstream regulators with programmable delay, polarity, and dependency logic stored in OTP memory. Each EN pin supports independent timing control down to 100 µs resolution. The P9145-I0NAGI's enable outputs are synchronized to internal clocks and unaffected by I2C bus latency.

Is there a pin-compatible alternative to the P9145-I0NAGI in a different package?

No, the P9145-I0NAGI (NAG100, HLA QFN) is not pin-compatible with the P9145-I0NQGI (NQG100, VFQFPN), despite sharing identical functionality and pin count. The two variants differ in land pattern, thermal pad geometry, and leadframe construction-requiring separate PCB layouts. Both are active and supported, but neither serves as a drop-in replacement for the other. The P9145-I0NAGI must be designed into boards using the NAG100 footprint defined in IDT's IBIS model and mechanical drawing DS-9145-100NAG.