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NXP Semiconductors SSL3252UK/C2,515
- Part No.:
- SSL3252UK/C2,515
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- -
- Datasheet:
-
SSL3252UK/C2,515.pdf
- Description:
- IC LED DVR PHOTO FLASH UNCASED
- Quantity:
- Payment:
- Shipping:
Inventory:3,495
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Product details
Overview
SSL3252UK/C2,515 from NXP Semiconductors is a photo flash LED driver IC designed for mobile phone and PDA applications. It integrates a 2 MHz synchronous boost converter and dual linear current sources to drive up to 500 mA flash current for single LEDs or 320 mA for dual-series LEDs, with 8.85 V max output voltage and >85 % efficiency at optimum load.
For engineers reviewing the SSL3252UK/C2,515 datasheet, SSL3252UK/C2,515 pinout, SSL3252UK/C2,515 application, or SSL3252UK/C2,515 equivalent, key selection criteria include I²C-programmable flash/torch/assist/indicator modes, WLCSP12 package compatibility with space-constrained PCBs, integrated time-out and OTP protection, and dual-mode interface (I²C or direct enable) with strobe-triggered flash timing.
Technical Context
The SSL3252UK/C2,515 implements a high-frequency (2 MHz) synchronous boost topology with internal MOSFETs, enabling compact 2.2 µH inductor and 4.7 µF capacitor designs. Its dual-path architecture separates main LED (LED pin) and indicator LED (I_IND pin) current regulation, each using high-side linear current sources with independent programmability.
Interface selection is hardware-defined via IF_SEL pin: I²C mode (IF_SEL = HIGH) enables register-based control of flash current (200–500 mA), torch current (20–160 mA), and indicator current (2.5–10 mA); Direct enable mode (IF_SEL = LOW) uses EN1/EN2/TORCH pins for fixed-current operation with default flash (500 mA single / 320 mA dual), torch (80 mA / 40 mA), and indicator (2.5 mA) levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion and Li-poly battery operation without external LDO. |
| Max Flash Current | 500 mA (single LED) / 320 mA (dual LED) - fixed in Direct enable mode; programmable up to 500 mA in I²C mode. |
| Indicator Current Range | 2.5 mA to 10 mA - independently adjustable via I²C register bits D[7:6]; fixed at 2.5 mA in Direct enable mode. |
| Switching Frequency | 2 MHz - enables use of ultra-small 2.2 µH inductor and minimizes EMI in RF-sensitive mobile layouts. |
| Output Voltage Limit | 8.85 V - sufficient to drive two white LEDs (VF ≈ 3.3 V each) in series under boost regulation. |
| Shut-down Current | <1 µA - achieved when IF_SEL, EN1, EN2, and TORCH are all LOW; critical for battery longevity in standby. |
| Flash Time-out | Programmable up to 850 ms - prevents LED thermal overstress; defaults to 850 ms in Direct enable mode. |
Pinout & Package
SSL3252UK/C2,515 is housed in a wafer-level chip-scale package (WLCSP12) measuring 1.58 × 2.06 × 0.6 mm with 500 µm bump pitch, optimized for ultra-thin mobile phone camera modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (A1) | Power ground | Low-impedance return path for boost converter switching current; must be connected to power plane separate from signal GND. |
| GND (A2) | Signal ground | Reference for I²C logic, analog comparators, and register circuitry; isolated from PGND to minimize noise coupling. |
| VIN (A3) | Input voltage supply | Accepts 2.5–5.5 V battery input; feeds both boost controller and internal LDOs; requires local 4.7 µF ceramic decoupling. |
| LX (B1) | Inductor switch node | Connects to 2.2 µH boost inductor; carries high di/dt switching current; requires short, low-inductance trace to PGND. |
| TORCH (B2) | Torch mode enable | Debounced digital input (9 ms RC filter); active-HIGH triggers fixed-current torch mode; internal 350 kΩ pull-down. |
| I_IND (B3) | Indicator LED current source | High-side linear current sink for dedicated indicator LED; delivers 2.5–10 mA (I²C) or fixed 2.5 mA (Direct enable). |
| VO (C1) | Boost output voltage | Regulated output up to 8.85 V; connects to anode of main LED string; requires 4.7 µF bulk capacitance to GND. |
| STRB/2LED (C2) | Strobe input / dual-LED detect output | In I²C mode: edge- or level-sensitive strobe trigger (350 kΩ internal pull-down); in Direct enable mode: open-drain 2LED status flag. |
| IF_SEL (C3) | Interface select | Hardware-configured mode selector: HIGH = I²C control (SDA/SCL), LOW = Direct enable (EN1/EN2/TORCH). |
| LED (D1) | Main LED current source | High-side linear current sink for primary flash LED(s); delivers up to 500 mA (single) or 320 mA (dual) with soft ramp. |
| SDA/EN2 (D2) | I²C data / Enable 2 | In I²C mode: bidirectional serial data line (400 kHz Fast-mode); in Direct enable mode: active-HIGH enable for assist/flash. |
| SCL/EN1 (D3) | I²C clock / Enable 1 | In I²C mode: serial clock input; in Direct enable mode: active-HIGH enable for indicator/flash (higher priority than TORCH). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-path LED drive | Separate high-side current sources for main flash (LED pin) and indicator (I_IND pin), eliminating need for external current-setting resistors. |
| Programmable multi-mode operation | Four distinct operational modes - Flash, Torch, Assist light, Indicator - each with independent current and timing control via I²C or pin logic. |
| Strobe-triggered flash | Dedicated STRB/2LED pin accepts host-processor strobe signals to bypass I²C latency, enabling sub-millisecond flash activation in camera systems. |
| Automatic LED count detection | Forward-voltage sensing at 80 mA LED current distinguishes single vs. dual LED strings and auto-selects appropriate default current settings. |
| Comprehensive fault protection | Five integrated protections - time-out, overtemperature (OTP), overvoltage (OVP), short-circuit, and broken coil detection - with fault register reporting in I²C mode. |
| Soft current ramp control | Ramp-up to 500 mA in ≤1 ms (150 µs wake-up + 850 µs ramp); ramp-down in ≤770 µs - prevents battery voltage sag and audible coil whine. |
Applications
| Mobile Phone Camera Flash | Digital Camera Auxiliary Light |
|---|---|
|
Use Scenario: Front/rear camera module in smartphones requiring burst flash illumination during low-light image capture. IC Role / Device Role / Timing Role: Primary flash driver delivering 500 mA peak current to single white LED with <850 ms time-out and strobe-synchronized activation. Use Value: Enables consistent, high-luminance flash pulses with minimal PCB area (WLCSP12 + 3 external components) and no thermal derating at ambient 60 °C. |
Use Scenario: Compact point-and-shoot or action camera needing assist light for autofocus and preview illumination. IC Role / Device Role / Timing Role: Dual-role driver operating in Assist light mode (40–80 mA) for continuous low-power illumination and Flash mode for capture bursts. Use Value: Eliminates need for separate assist and flash drivers; shared boost converter reduces BOM cost and power path complexity. |
| Smartphone Status Indicator | Portable Medical Imaging Device |
|
Use Scenario: Notification LED system in Android/iOS devices requiring programmable brightness and color-matching current stability. IC Role / Device Role / Timing Role: Dedicated indicator current source (I_IND pin) delivering precise 2.5–10 mA to red/green/blue indicator LEDs. Use Value: Independent current regulation ensures consistent luminance across battery voltage range (2.5–5.5 V) without external DAC or op-amp. |
Use Scenario: Handheld dermatoscope or otoscope requiring calibrated flash intensity for clinical image documentation. IC Role / Device Role / Timing Role: Precision flash controller with I²C-programmable current (200–500 mA) and timer registers for repeatable exposure control. Use Value: Factory-trimmable flash duration and amplitude support medical-grade repeatability; OTP and OVP ensure patient-device safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar photo flash LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61310DSKR | Single-mode boost driver (no indicator output); 4-A switch current; 3-MHz switching; requires external current sense resistor. | Lacks integrated indicator LED drive and automatic LED detection; suited for high-current single-LED flash only. | Select when maximum flash current (>500 mA) and minimal external component count outweigh need for indicator functionality. |
| MAX8630YETA+ | 3.2-MHz boost with integrated 200-mA indicator channel; I²C interface only; no direct-enable mode or strobe input. | Missing TORCH pin and STRB/2LED strobe capability; limited to I²C-controlled systems without real-time flash triggering. | Prefer when board space allows larger 20-pin TQFN and system design mandates pure I²C control without hardware strobe path. |
Compared with TPS61310DSKR and MAX8630YETA+, the SSL3252UK/C2,515 uniquely combines dual-path LED drive (main + indicator), hardware strobe triggering, and dual-interface flexibility (I²C or direct enable) in a 1.58 × 2.06 mm WLCSP - making it optimal for space-constrained, multi-function mobile camera modules.
Availability
SSL3252UK/C2,515 is available at Aetrix Electronics and suitable for mobile phone camera flash, portable digital camera auxiliary lighting, and smartphone status indicator applications requiring stable component supply across high-volume production cycles.
Supply support for SSL3252UK/C2,515 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 markets.
The SSL3252UK/C2,515 belongs to NXP's mobile power management product line, engineered specifically for ultra-compact, high-efficiency LED flash driving in battery-powered handheld imaging devices.
FAQ
What is the primary function of the SSL3252UK/C2,515 in a mobile phone design?
The SSL3252UK/C2,515 serves as a fully integrated photo flash LED driver IC that powers both main flash LEDs and a separate indicator LED. It delivers up to 500 mA flash current to a single LED or 320 mA to dual-series LEDs using a 2 MHz boost converter, while providing independent 2.5–10 mA indicator current. Its WLCSP12 package and three-external-component requirement make it ideal for thin smartphone camera modules where board space is severely constrained.
How does the SSL3252UK/C2,515 handle dual-LED versus single-LED configuration detection?
The SSL3252UK/C2,515 performs automatic LED count detection by measuring the forward voltage at the LED pin when ramping current to 80 mA. If VO exceeds 4.35 V (plus offset set by register bits D[5:4]), it identifies two LEDs in series and switches to dual-LED default current settings (e.g., 320 mA flash instead of 500 mA). In I²C mode, detection result is reported in bit D3 of the fault register; in Direct enable mode, the STRB/2LED pin outputs an open-drain 2LED signal during flash.
Can the SSL3252UK/C2,515 operate without an I²C interface?
Yes, the SSL3252UK/C2,515 supports standalone operation via Direct enable mode, activated by pulling IF_SEL LOW. In this mode, TORCH, EN1 (SCL/EN1), and EN2 (SDA/EN2) pins directly control operational modes: TORCH = torch, EN2 = assist light, EN1+EN2 = flash, EN1 = indicator. No microcontroller or I²C bus is required, enabling simple, low-cost implementations in resource-constrained devices.
What protection features are built into the SSL3252UK/C2,515 to ensure system reliability?
The SSL3252UK/C2,515 integrates five critical protection circuits: time-out (programmable up to 850 ms), overtemperature (OTP), overvoltage (OVP), short-circuit (LED-to-GND), and broken coil detection (inductor inductance <800 nH). All protections force the device into Fault mode and set corresponding bits in the fault register (I²C mode) or disable outputs (Direct enable mode), preventing damage to LEDs, battery, or PCB during fault conditions.
What is the significance of the STRB/2LED pin on the SSL3252UK/C2,515?
The STRB/2LED pin provides dual functionality depending on interface mode: in I²C mode (IF_SEL = HIGH), it serves as a strobe input to trigger flash synchronously with the host processor - bypassing I²C latency for sub-millisecond response; in Direct enable mode (IF_SEL = LOW), it acts as an open-drain output indicating dual-LED detection during flash operation. This pin eliminates the need for separate strobe routing or LED-count sensing circuitry.
SSL3252UK/C2,515 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- -
- Topology:
- -
- Internal Switch(s):
- -
- Number of Outputs:
- -
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SSL3252UK/C2,515 FAQ
1.How can I place an order for SSL3252UK/C2,515 through Aetrix?
Please submit a Request for Quotation (RFQ) for SSL3252UK/C2,515 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 SSL3252UK/C2,515 reliable?
The price and inventory of SSL3252UK/C2,515 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SSL3252UK/C2,515 is usually 5 days.
3.What payment methods are accepted for SSL3252UK/C2,515?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SSL3252UK/C2,515 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SSL3252UK/C2,515?
SSL3252UK/C2,515 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SSL3252UK/C2,515 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 SSL3252UK/C2,515?
For technical support, including SSL3252UK/C2,515 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SSL3252UK/C2,515 requirements.
6.How does Aetrix verify that SSL3252UK/C2,515 is sourced from the original manufacturer or authorized distributors?
All SSL3252UK/C2,515 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 SSL3252UK/C2,515 meets industry standards.
7.What is the process for return or replacement of SSL3252UK/C2,515?
All SSL3252UK/C2,515 units undergo pre-shipment inspection (PSI). If there is an issue with SSL3252UK/C2,515, 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 SSL3252UK/C2,515 part is unused and in its original packaging.
Return procedure for SSL3252UK/C2,515:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SSL3252UK/C2,515 Tags
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