NXP Semiconductors SC900841JVKR2

Overview

SC900841JVKR2 from Freescale Semiconductor is a highly integrated Power Management IC (PMIC) for ultra-mobile platforms, delivering 29 regulated voltage rails-including nine high-frequency switching regulators (1.0–4.0 MHz), 17 LDOs, and three 3.3 V power switches-alongside a switching-mode Li-Ion battery charger, 22-channel 10-bit ADC, RTC, 8 GPIO/GPO, and LED backlight drivers. It targets Mobile Internet Devices (MID), tablets, and netbooks requiring compact, multi-rail power sequencing and system-level integration.

For engineers reviewing the SC900841JVKR2 datasheet, SC900841JVKR2 pinout, SC900841JVKR2 application, or SC900841JVKR2 equivalent, key selection considerations include its 338-MAPBGA package (11 mm × 11 mm), SPI/Mini-SPI programmability, thermal management with junction temperature up to +125 °C, and support for dual-charger topologies (USB/battery input with coin cell backup).

Technical Context

The SC900841JVKR2 implements a hierarchical power architecture with dedicated DC/DC converters for CPU core (VCC), memory (VDDQ, VCCPDDR), I/O (V15, V21), RF subsystems (VYMX3G, VYMXPA, VYMXGPS), and peripheral rails (VBKLT, VAON, VCCPAOAC). Each rail supports programmable voltage, current limiting, UV/OV protection, and dynamic voltage scaling via VID control or SPI register writes.

Its embedded 22-channel ADC enables real-time monitoring of battery voltage, thermal sensors, and touch screen inputs, while the RTC operates from a coin cell (1.2–1.5 V input, 1.0–2.0 µA consumption) and the 26 MHz/32 kHz oscillators provide clocking with ±30 ppm tolerance and 40–60% duty cycle. System state transitions (Hard/Soft Mechanical Off, Power On) are managed autonomously based on USBDET/BATDET logic.

Key Specifications

Pinout & Package

SC900841JVKR2 is housed in a 338-ball MAPBGA package (11 mm × 11 mm, 0.5 mm pitch) with thermal pad exposed on underside for enhanced heat dissipation. Pin assignment follows Freescale's documented ball map for SC900841 family; critical functions include VPWR (main input), VBAT (battery input), COINCELL (coin cell input), SDATA/SCK/CS (SPI interface), and dedicated rail enable/control pins (e.g., V33EN, V3GPAEN).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX8649 and TPS65910, the SC900841JVKR2 provides significantly higher integration-29 rails, 22-channel ADC, switching charger, RTC, and WLED driver-making it suitable for complex ultra-mobile platforms where minimizing component count and board area is critical.

Availability

SC900841JVKR2 is available at Aetrix Electronics and suitable for Mobile Internet Devices (MID), Tablet PCs, and Netbooks requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for SC900841JVKR2 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

Freescale Semiconductor (now part of NXP Semiconductors) is a fabless semiconductor company specializing in embedded processing, analog, and power management solutions for automotive, industrial, and consumer markets.

The SC900841JVKR2 belongs to Freescale's Ultra-Mobile Platform PMIC product line, engineered specifically to consolidate power, battery, audio, and sensing functions into a single chip for next-generation portable computing devices.

FAQ

What is the maximum junction temperature specification for the SC900841JVKR2?

The SC900841JVKR2 has an operating junction temperature range of −30 °C to +125 °C, as specified in the Absolute Maximum Ratings table. This rating enables reliable operation under sustained load conditions in thermally constrained ultra-mobile enclosures. Thermal management is further supported by hardware-monitored over-temperature shutdown and an integrated thermal trip signal (THRMTRIPB) that asserts when TJ exceeds safe limits. The SC900841JVKR2 must be mounted with appropriate PCB copper pour and thermal vias to maintain junction temperature within this range during continuous operation.

Does the SC900841JVKR2 support both USB and battery input sources simultaneously?

Yes, the SC900841JVKR2 supports concurrent USB and battery input through its power path management architecture. The device monitors USBDET and BATDET signals to autonomously select the optimal source, prioritize charging, and prevent backfeed. When both sources are present, the SC900841JVKR2 routes power to system rails while conditioning the battery with constant-current/constant-voltage charging. Input voltage thresholds (e.g., VPWRUVR = 3.1 V, VPWRUVF = 2.55 V) ensure seamless transitions during source loss or insertion without rail collapse.

How many voltage rails can be programmed via SPI on the SC900841JVKR2?

All 29 voltage rails on the SC900841JVKR2 are fully programmable via its SPI interface (up to 25 MHz), including DC/DC converters (VCC, V15, V21, VYMX3G, etc.), LDOs (VAON, VBG, VCCA), and specialized outputs (VBKLT, VOTG). Each rail supports individual configuration of output voltage, current limit, soft-start time, UV/OV thresholds, and enable/disable state. The SPI register map also allows global control of sequencing order, power states, and protection behavior-enabling complete system-level power policy definition without external firmware intervention.

What is the resolution and accuracy of the SC900841JVKR2's ADC subsystem?

The SC900841JVKR2 integrates a 22-channel, 10-bit successive-approximation ADC with typical INL/DNL of ±0.5 LSB. It supports internal sensing (battery voltage, die temperature) and external inputs including 4-wire resistive touch screen coordinates. Conversion accuracy is maintained across −40 °C to +85 °C ambient, with reference derived from internal bandgap. The ADC operates independently of main power rails, enabling accurate measurements even during low-power states-critical for battery fuel gauging and thermal management in portable devices using the SC900841JVKR2.

Can the SC900841JVKR2 drive WLED backlight arrays directly?

Yes, the SC900841JVKR2 includes a dedicated high-voltage WLED driver (VBKLT rail) capable of delivering up to 23 V at 120 mA with programmable current sink control. It supports common-anode configurations and provides over-voltage (24 V), under-voltage (20 V), and short-circuit protection. The driver integrates PWM dimming input and feedback loop compensation, allowing direct connection to multi-string WLED panels without external boost controllers. This capability eliminates the need for discrete backlight ICs in MID and tablet designs using the SC900841JVKR2.