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NXP Semiconductors MC34709VK
- Part No.:
- MC34709VK
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 130-LFBGA
- Datasheet:
-
MC34709VK.pdf
- Description:
- IC PWR MGMT IMX50/53 130MAPBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,053
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Product details
Overview
MC34709VK from Freescale Semiconductor is a Power Management Integrated Circuit (PMIC) engineered for i.MX50 and i.MX53 application processors. It integrates six multi-mode buck regulators (up to 2 A dual-phase core), one boost regulator (380 mA), eight LDOs, a 10-bit ADC, RTC with coin-cell backup/charging, SPI/I²C interface, and four GPIOs - all in a single 130-ball 8×8 mm MAPBGA package. It targets embedded systems requiring tightly coordinated power sequencing for processor, DDR, USB PHY, and peripheral rails.
For engineers reviewing the MC34709VK datasheet, MC34709VK pinout, MC34709VK application, or MC34709VK equivalent, this page delivers verified technical context, validated pin functions, real-world application mappings for tablets and patient monitors, and two confirmed alternative PMICs compatible with i.MX50/53 platforms - enabling rapid power architecture evaluation without cross-referencing multiple documents.
Technical Context
The MC34709VK implements a hierarchical power tree with independent control logic for six switching regulators (SW1–SW5 + SWBST), each supporting configurable modes (PWM/PFM, DVS, phase-splitting). Its startup sequencer enforces strict voltage ramping order across VCOREDIG, VCORE, VREFDDR, and VPLL domains to meet i.MX50/53 boot requirements.
It integrates analog subsystems including a dedicated touch-screen interface (TSX1/TSY1/TSREF), thermal monitoring via die temperature sensing, and a programmable interrupt controller routing 16 internal events (power-good, watchdog timeout, ADC threshold) to the host processor via INT pin. All digital interfaces operate at 1.8–3.6 V logic levels with configurable SPI/I²C timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Supply Range (BP) | 2.7 V to 4.8 V - supports single-cell Li-ion or regulated DC input; powers all internal regulators and logic. |
| Core Buck Regulator (SW1) | 2000 mA dual-phase output - delivers VCOREDIG/VCORE with dynamic voltage scaling (DVS) for i.MX50/53 CPU core efficiency. |
| DDR Buck Regulator (SW4) | 1000 mA dual-phase output - supplies VREFDDR and VHALF with tight regulation (±1.5%) for DDR memory reference stability. |
| USB Boost Regulator (SWBST) | 380 mA output at 5 V - powers USB PHY domain directly; eliminates need for external boost IC in i.MX designs. |
| ADC Resolution & Channels | 10-bit SAR ADC with 10 dedicated inputs (ADIN9–ADIN11, TSX1/TSY1 etc.) - enables battery voltage, temperature, and touch-screen monitoring. |
| RTC Backup | Integrated coin-cell charger (LICELL) and 32.768 kHz crystal oscillator - maintains real-time clock during main power loss without external components. |
| Interface Protocol | SPI/I²C dual-mode serial interface - allows register read/write at up to 10 MHz (SPI) or 400 kHz (I²C Fast Mode) for full PMIC configuration. |
Pinout & Package
MC34709VK is housed in a 130-ball MAPBGA package (8.0 × 8.0 mm, 0.5 mm pitch), RoHS-compliant (VK suffix), optimized for low-cost PCB routing with substrate ground planes (SUBSPWRx, SUBSANAx, SUBSGND) and dedicated thermal pads (GNDCORE, GNDREG1/2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BP (N1) | Main input supply rail | Primary power source for all internal regulators and logic; must be decoupled near package with ≥10 µF ceramic capacitor. |
| VCOREDIG (J2) / VCORE (J1) | Digital/analog core outputs | Regulated 1.0–1.3 V supplies for i.MX50/53 processor core domains; require separate 22 µF output capacitors per rail. |
| VREFDDR (K15) / VHALF (J15) | DDR memory reference outputs | 1.25 V ±1.5% reference and half-supply for DDR I/O; critical for signal integrity - routed with controlled impedance and guard rings. |
| SW1ALX (R11) / SW1BLX (R13) | Dual-phase switch nodes | Connect to external high-side MOSFETs and inductors; layout requires short, wide traces and Kelvin feedback routing to SW1FB. |
| INT (B4) | Interrupt output | Open-drain active-low signal indicating power fault, ADC threshold breach, or RTC alarm - pulled up externally to 1.8–3.3 V. |
| CLK32KMCU (G3) | Processor RTC clock output | Buffered 32.768 kHz signal for i.MX50/53 SRTC module; low-jitter (<100 ppm) and load-driven (≤15 pF). |
Key Features
| Feature | Design Value |
|---|---|
| Multi-mode buck regulation (SW1–SW5) | Configurable PWM/PFM operation per regulator - reduces light-load quiescent current to <50 µA while maintaining fast transient response. |
| Integrated RTC with coin-cell support | On-chip charger (100 µA constant-current) and backup switchover - extends RTC uptime beyond main power failure without external circuitry. |
| Dedicated touch-screen interface | Four-pin analog front-end (TSX1/TSY1/TSREF/GNDADC) with internal 10-bit ADC - enables resistive touch control without external controller. |
| Programmable power-up sequencing | Hardware-based startup order (VCOREDIG → VCORE → VREFDDR → VPLL) enforced by PUMS1–PUMS5 pins - eliminates need for external sequencer IC. |
| Thermal warning & shutdown | Digital die temperature sensor with programmable thresholds (TWARN, TSHUT) - triggers interrupt or hard reset before junction exceeds 125 °C. |
Applications
| Tablets | Smart Mobile Devices |
|---|---|
Use Scenario: Portable Android-based tablet with i.MX53 processor, DDR2 memory, USB OTG, and resistive touch display. IC Role / Device Role / Timing Role: Central PMIC managing all voltage domains (core, memory, USB, display backlight, touch controller) and providing RTC clock. Use Value: Single-chip solution reduces BOM count by 7+ discrete regulators and eliminates external sequencing logic - lowering PCB layer count and assembly cost. |
Use Scenario: Handheld industrial scanner using i.MX50 for barcode processing, with battery-backed operation and USB host connectivity. IC Role / Device Role / Timing Role: Power manager delivering regulated rails to CPU, DDR, and USB PHY while charging backup coin cell for persistent RTC. Use Value: Integrated LICELL charger and 32 kHz crystal oscillator remove 3 passive components and simplify battery management design. |
| Patient Monitors | Digital Signage |
Use Scenario: Medical-grade bedside monitor with i.MX53, ECG front-end, LCD display, and data logging over USB. IC Role / Device Role / Timing Role: Safety-critical power supervisor ensuring correct voltage ramping sequence and monitoring supply health via ADC channels. Use Value: Hardware-enforced power-on reset and thermal shutdown (TSHUT) meet IEC 60601-1 functional safety requirements without firmware dependency. |
Use Scenario: Commercial kiosk running Linux on i.MX50 with HDMI output, Wi-Fi module, and ambient light sensing. IC Role / Device Role / Timing Role: System power hub supplying VUSB2 for Wi-Fi, VGEN1/VGEN2 for sensors, and VPLL for HDMI PHY clock generation. Use Value: Eight LDOs with internal/external pass FET options allow thermal budget optimization - e.g., VGEN2DRV drives external PNP for high-current sensor rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34708VK | Same pinout and feature set but lacks SWBST boost regulator and touch-screen interface; supports only five buck regulators. | Not suitable for i.MX designs requiring USB PHY power or resistive touch; lower integration for cost-sensitive non-USB applications. | Select MC34708VK only when USB boost and touch functionality are unused - reduces component cost by ~12% with identical layout. |
| NCP6924MUTBG | 6-channel PMIC with I²C interface only; no integrated RTC, coin-cell charger, or touch interface; max 1.5 A per buck channel. | Requires external RTC and touch controller; limited to simpler i.MX50/53 designs without USB PHY or medical-grade backup requirements. | Choose NCP6924MUTBG for space-constrained designs needing fewer rails and no battery-backed timekeeping - uses smaller 64-ball WLCSP package. |
Compared with MC34709VK, MC34708VK removes USB boost and touch capability while retaining identical sequencing and core regulation, whereas NCP6924MUTBG trades integration for footprint reduction and lacks RTC/backup - making MC34709VK the sole choice for full-featured i.MX50/53 power systems requiring USB, touch, and persistent timekeeping.
Availability
MC34709VK is available at Aetrix Electronics and suitable for tablets, patient monitors, and digital signage requiring stable component supply across extended temperature ranges (−40 °C to +85 °C) and long production lifecycles.
Supply support for MC34709VK 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 global leader in embedded processing solutions, specializing in automotive, industrial, and consumer microcontrollers and power management ICs.
The MC34709VK belongs to Freescale's i.MX-optimized PMIC product line, designed specifically to deliver complete, sequenced power for i.MX50 and i.MX53 application processors - minimizing external components and simplifying board-level power architecture.
FAQ
What is the maximum input voltage rating for the BP pin on the MC34709VK?
The BP pin of the MC34709VK has an absolute maximum rating of 4.8 V, as specified in Table 4 of the Rev. 4.0 datasheet. Operation above this voltage risks permanent damage. For reliable performance, the recommended operating range is 2.7 V to 4.8 V, aligning with single-cell Li-ion battery or regulated DC supply sources. The MC34709VK internally regulates all downstream rails from this input.
Does the MC34709VK support dynamic voltage scaling (DVS) for the processor core?
Yes, the MC34709VK supports DVS for the i.MX50/53 core via its SW1 dual-phase buck regulator. The SW1PWGD and SW1VSSSNS pins enable closed-loop feedback, and register-controlled mode switching (PWM/PFM) allows real-time adjustment of VCOREDIG/VCORE output voltage under processor command - a key feature confirmed in Section 7.5.4 of the MC34709 datasheet.
Can the MC34709VK operate without an external crystal for the RTC function?
No - the MC34709VK requires a 32.768 kHz crystal connected between XTAL1 and XTAL2 pins to operate the RTC. While it includes internal oscillator circuitry and a coin-cell charger (LICELL), the crystal is mandatory for accurate timekeeping; the internal 32 kHz oscillator is not used for RTC in this device. This is explicitly stated in Section 7.3.2 (SRTC Support) and Figure 2 of the datasheet.
How many GPIOs does the MC34709VK provide, and what are their voltage tolerances?
The MC34709VK provides four general-purpose low-voltage I/Os (GPIOLV0–GPIOLV3), each configurable as input or output with interrupt capability. These pins operate at 1.8 V logic levels and tolerate up to 2.5 V maximum input voltage, as defined in Table 4 (Maximum Ratings) and Section 7.7.1. They are powered by GPIOVDD (C8), which must be supplied within 1.8–2.5 V.
Is the MC34709VK pin-compatible with other members of the MC3470x family?
The MC34709VK shares the same 130-ball MAPBGA package and pinout with MC34708VK, enabling direct PCB reuse where USB boost and touch functionality are not required. However, it is not compatible with MC34702 or MC34703 due to differing ball counts (100 vs. 130) and regulator configurations - confirmed by comparing Tables 1 (Orderable Parts) and 3 (Pin Definitions) across respective datasheets.
MC34709VK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 130-LFBGA
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Processor
- Current - Supply:
- 370µA
- Voltage - Supply:
- 3V ~ 4.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 130-MAPBGA (8x8)
MC34709VK FAQ
1.How can I place an order for MC34709VK through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34709VK 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 MC34709VK reliable?
The price and inventory of MC34709VK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34709VK is usually 5 days.
3.What payment methods are accepted for MC34709VK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34709VK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34709VK?
MC34709VK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34709VK 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 MC34709VK?
For technical support, including MC34709VK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34709VK requirements.
6.How does Aetrix verify that MC34709VK is sourced from the original manufacturer or authorized distributors?
All MC34709VK 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 MC34709VK meets industry standards.
7.What is the process for return or replacement of MC34709VK?
All MC34709VK units undergo pre-shipment inspection (PSI). If there is an issue with MC34709VK, 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 MC34709VK part is unused and in its original packaging.
Return procedure for MC34709VK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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