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NXP Semiconductors DC6M601X6/18S,135
- Part No.:
- DC6M601X6/18S,135
- Manufacturer:
- NXP Semiconductors
- Package:
- 6-XFBGA, WLCSP
- Datasheet:
-
DC6M601X6/18S,135.pdf
- Description:
- IC REG BUCK 1.8V 650MA 6WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,010
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Product details
Overview
DC6M601X6/18S,135 from NXP Semiconductors is a 6 MHz, 650 mA synchronous step-down DC-DC converter in WLCSP6 package, delivering a fixed 1.8 V output from 2.8–5.5 V input. It integrates P-channel and N-channel MOSFETs, supports automatic PWM/PFM mode selection, achieves up to 92 % efficiency, and targets space-constrained portable power rails for camera modules and application processors.
For engineers reviewing the DC6M601X6/18S,135 datasheet, DC6M601X6/18S,135 pinout, DC6M601X6/18S,135 application, or DC6M601X6/18S,135 equivalent, key selection criteria include its 1.8 V fixed output, 6 MHz switching frequency enabling sub-1 µH inductor use, ±2 % DC output voltage accuracy, integrated soft-start (300 µs), and WLCSP6 footprint with 0.4 mm pitch.
Technical Context
The DC6M601X6/18S,135 implements a synchronous buck topology with integrated high-side PMOS and low-side NMOS switches, operating at a fixed 6 MHz PWM clock (5.4–6.6 MHz typical). Its feedback loop monitors output voltage via the FB pin placed after the external inductor, maintaining regulation through duty-cycle control.
It features automatic mode selection between PWM and PFM based on load current threshold detection, with MODE pin logic LOW enabling auto mode and HIGH forcing PWM-only operation. The device includes thermal shutdown at 150 °C, short-circuit protection via PMOS current sensing, and an enable input compatible with both DC HIGH and 5–27 MHz clock signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2 % over load/temperature; eliminates external resistor divider and simplifies layout. |
| Max Output Current | 650 mA continuous; supports core voltage rails for image sensors and low-power microcontrollers. |
| Input Voltage Range | 2.8 V to 5.5 V; compatible with single-cell Li-ion (3.0–4.2 V) and USB-powered systems. |
| Switching Frequency | 6 MHz nominal (5.4–6.6 MHz); enables use of 470 nH inductors and reduces output capacitor size. |
| Efficiency | Up to 92 % at mid-load; extends battery life in portable devices by minimizing quiescent losses. |
| Quiescent Current | 180 µA in PFM mode, 0.2 µA in shutdown; critical for standby power budget in always-on subsystems. |
| Output Ripple | ≤15 mVp-p at 650 mA; meets noise-sensitive analog supply requirements without additional LDO post-regulation. |
Pinout & Package
DC6M601X6/18S,135 uses a Wafer-Level Chip-Size Package (WLCSP6) measuring 1.36 × 0.96 × 0.47 mm with 0.4 mm bump pitch and 3×2 solder ball array. The package is lead-free and moisture-sensitivity level (MSL) 1 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE (A1) | Mode select input | LOW = automatic PWM/PFM; HIGH = forced PWM only; no internal pull-up/down - requires defined logic level. |
| IN (A2) | Power input | Accepts 2.8–5.5 V; requires ≥4.7 µF low-ESR ceramic capacitor placed adjacent to pin. |
| SW (B1) | Switch node | Connects to external 470 nH inductor; carries high di/dt switching current - demands tight layout and ground plane. |
| EN (B2) | Enable control | Active HIGH or 5–27 MHz clock signal; enables soft-start on assertion; pulls output low when LOW. |
| FB (C1) | Feedback sense | Monitors regulated output after inductor; sets 1.8 V via internal reference - no external resistors needed. |
| GND (C2) | Ground reference | Primary return path for power and control circuits; must connect to low-impedance PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectification | Eliminates external flyback diode, reducing BOM count and improving efficiency above 100 mA. |
| Soft-start function | 300 µs controlled ramp limits inrush current to ≤300 mA, preventing input rail collapse during power-up. |
| Thermal and short-circuit protection | Auto-shutdown at 150 °C junction temperature and PMOS overcurrent detection; restarts automatically after cooldown. |
| Ultra-small WLCSP6 footprint | 1.36 × 0.96 mm area - fits within camera module bezels and ultra-thin smartphone PCB stackups. |
| Low-noise PFM/PWM transition | Seamless mode switching minimizes output voltage perturbation (<10 mV) during light-to-heavy load transients. |
Applications
| Smartphone Camera Module | Tablet PC Application Processor Core Rail |
|---|---|
Use Scenario: Powering CMOS image sensor and ISP in front/rear cameras with strict EMI and space constraints. IC Role / Device Role / Timing Role: Primary 1.8 V core supply for sensor interface logic and analog front-end, synchronized to MIPI clock domains. Use Value: 6 MHz switching avoids AM radio band interference; WLCSP6 placement near sensor reduces trace inductance and improves PSRR. | Use Scenario: Delivering stable 1.8 V to Cortex-A series CPU cores during dynamic DVFS transitions. IC Role / Device Role / Timing Role: Point-of-load regulator responding to rapid load steps (0 → 650 mA in <10 µs) with <15 mV undershoot. Use Value: High efficiency across 10–650 mA range extends battery runtime; soft-start prevents reset during boot sequence. |
| Digital Still Camera Sensor Bias | Portable Media Player Audio Codec Supply |
Use Scenario: Providing clean 1.8 V bias to CCD/CMOS sensor analog blocks in compact DSC form factors. IC Role / Device Role / Timing Role: Low-noise power source decoupled from digital switching noise; operates in PFM during idle capture mode. Use Value: ≤15 mVp-p ripple ensures <72 dB SNR in 14-bit ADC paths; 180 µA PFM quiescent current extends standby time. | Use Scenario: Supplying 1.8 V to stereo audio DAC and headphone amplifier in battery-powered PMPs. IC Role / Device Role / Timing Role: Dedicated low-noise rail isolated from display and storage switching noise; enabled only during playback. Use Value: Automatic PWM/PFM mode cuts idle power by >90 % vs. forced PWM; WLCSP6 allows placement under audio IC for shortest path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 3 MHz switching frequency; 600 mA max output; 1.8 V fixed; 0.65 mm × 0.65 mm DSBGA6 package. | Larger inductor required (1.5 µH); lower efficiency at 650 mA due to lower frequency and higher RDS(on). | Choose if board rework tolerance permits larger magnetics and thermal margin exceeds 15 °C. |
| RT8059ZSP | 2.5 MHz switching; 800 mA max; adjustable output (0.6–3.3 V); 1.58 mm × 1.58 mm WDFN6 package. | Requires external feedback resistors; larger footprint; lacks clock-enable functionality for SMIA-compliant systems. | Prefer when adjustable output or higher current headroom is mandatory, and SMIA clock-enable is not used. |
Compared with TPS62231DRYR and RT8059ZSP, DC6M601X6/18S,135 delivers superior high-frequency performance in minimal area, supports SMIA clock-enable for camera synchronization, and achieves tighter output accuracy (±2 % vs. ±3 % typical), making it optimal for space- and noise-critical portable imaging rails.
Availability
DC6M601X6/18S,135 is available at Aetrix Electronics and suitable for smartphone camera modules, tablet PC processor cores, and digital still camera sensor bias rails requiring stable component supply, long-term lifecycle support, and consistent wafer-lot traceability.
Supply support for DC6M601X6/18S,135 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and mobile applications.
The DC6M60xX6 family was designed specifically for ultra-compact, high-efficiency power delivery in battery-powered imaging and portable computing devices, emphasizing minimal footprint, low EMI, and seamless integration with SMIA and MIPI interfaces.
FAQ
What is the recommended external inductor value for DC6M601X6/18S,135?
The DC6M601X6/18S,135 is optimized for a 470 nH inductor, such as Murata LQM21PNR47MC0. This value enables stable 6 MHz operation with minimal output ripple and peak-to-peak voltage deviation under full 650 mA load. Inductor saturation current must exceed 1.3 A to accommodate inrush and transient conditions specified in the datasheet.
Does DC6M601X6/18S,135 support clock-based enable for SMIA-compliant camera modules?
Yes, DC6M601X6/18S,135 accepts a 5–27 MHz clock signal on the EN pin to enable the device, fully complying with Standard Mobile Imaging Architecture (SMIA) timing requirements. This allows synchronous power activation with image sensor clock domains, eliminating startup timing mismatches in multi-camera systems.
What is the maximum allowable input voltage for DC6M601X6/18S,135 and how is overvoltage protected?
The absolute maximum input voltage on the IN pin of DC6M601X6/18S,135 is +6.0 V for 4 ms transients. Permanent operation above 5.5 V violates recommended conditions. The device does not include integrated overvoltage protection; external TVS or clamp circuitry is required if system-level transients exceed this limit.
Can DC6M601X6/18S,135 be used with PCB-integrated planar inductors?
Yes, DC6M601X6/18S,135 explicitly supports Printed-Circuit Board (PCB) coils in addition to standard chip inductors and air-core inductors. Its 6 MHz switching frequency and low gate charge drive capability make it compatible with low-inductance, low-DCR planar windings, provided parasitic capacitance and self-resonant frequency remain above 20 MHz.
What is the thermal shutdown behavior of DC6M601X6/18S,135 during sustained overload?
When the junction temperature of DC6M601X6/18S,135 reaches 150 °C, the thermal protection circuit disables the PMOS switch and halts switching. After temperature drops by 40 K (hysteresis), the device automatically restarts with full soft-start sequencing. This cycle repeats until fault condition is removed, preventing permanent silicon damage.
DC6M601X6/18S,135 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 6-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 650mA
- Frequency - Switching:
- 6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLCSP (1.36x0.96)
DC6M601X6/18S,135 FAQ
1.How can I place an order for DC6M601X6/18S,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for DC6M601X6/18S,135 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 DC6M601X6/18S,135 reliable?
The price and inventory of DC6M601X6/18S,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC6M601X6/18S,135 is usually 5 days.
3.What payment methods are accepted for DC6M601X6/18S,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC6M601X6/18S,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC6M601X6/18S,135?
DC6M601X6/18S,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC6M601X6/18S,135 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 DC6M601X6/18S,135?
For technical support, including DC6M601X6/18S,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC6M601X6/18S,135 requirements.
6.How does Aetrix verify that DC6M601X6/18S,135 is sourced from the original manufacturer or authorized distributors?
All DC6M601X6/18S,135 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 DC6M601X6/18S,135 meets industry standards.
7.What is the process for return or replacement of DC6M601X6/18S,135?
All DC6M601X6/18S,135 units undergo pre-shipment inspection (PSI). If there is an issue with DC6M601X6/18S,135, 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 DC6M601X6/18S,135 part is unused and in its original packaging.
Return procedure for DC6M601X6/18S,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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