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Texas Instruments LM2775QDSGTQ1
- Part No.:
- LM2775QDSGTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LM2775QDSGTQ1.pdf
- Description:
- IC REG CHARG PUMP 5V 200MA 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:541
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Product details
Overview
LM2775QDSGTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified switched-capacitor boost converter that generates a regulated 5-V output from 2.7–5.5-V input, delivering up to 200 mA with 2-MHz switching and integrated PFM/PWM mode control - used for CAN transceiver power in ADAS camera modules and millimeter-wave radar subsystems.
For engineers reviewing the LM2775QDSGTQ1 datasheet, LM2775QDSGTQ1 pinout, LM2775QDSGTQ1 application, or LM2775QDSGTQ1 equivalent, key selection criteria include its inductor-less 5-V boost architecture, thermal shutdown (150°C), output disconnect control (OUTDIS), pre-regulated low-noise operation, and WSON-8 package compatibility with automotive PCB layout constraints.
Technical Context
The LM2775QDSGTQ1 implements a two-phase non-overlapping switched-capacitor doubler with internal pre-regulation: during φ1, C1 charges from VIN to ground; during φ2, C1 stacks atop VIN to boost VOUT. Regulation occurs before voltage doubling by modulating current through VIN-connected switches, minimizing input current ripple.
It supports dual operating modes via the PFM pin: PFM mode enables sub-kHz burst operation at light loads (IQ = 75 µA typ.), while PWM mode maintains fixed 2-MHz switching (IQ = 5 mA typ.) for predictable noise and lower output ripple. Output discharge behavior is configurable via OUTDIS, and thermal shutdown (150°C/130°C hysteresis) protects under sustained overload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5 V ±4% regulation over load (0–200 mA) and temperature (–40°C to +125°C) |
| Input Range | 2.7 V to 5.5 V - supports direct boosting from 3.3-V system rails and cold-crank tolerant operation down to 2.7 V |
| Max Output Current | 200 mA at VIN ≥ 3.1 V; drops to 125 mA at VIN = 2.7 V - defined by internal 600-mA input current limit and thermal limits |
| Switching Frequency | 2 MHz nominal (1.7–2.3 MHz range) - enables use of tiny 1-µF flying capacitor and 2.2-µF input/output ceramics |
| Quiescent Current | 75 µA (PFM enabled, IOUT = 0); 5 mA (PWM mode, IOUT = 0) - critical for always-on automotive domains |
| Thermal Shutdown | Activates at TJ = 150°C (typ.), releases at 130°C - prevents damage during sustained overload or poor PCB thermal design |
| Undervoltage Lockout | Shuts down at VIN < 2.4 V (falling), resumes above 2.6 V - avoids unstable startup during battery sag |
Pinout & Package
LM2775QDSGTQ1 is housed in an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad soldered to GND - optimized for automotive thermal reliability and board space efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PFM | Digital input | Enables/disables pulse-frequency modulation: high = PFM active (low-IQ), low = fixed 2-MHz PWM |
| 2 - C1– | Flying capacitor terminal | Connects to negative side of external 1-µF ceramic flying capacitor (C1) |
| 3 - C1+ | Flying capacitor terminal | Connects to positive side of external 1-µF ceramic flying capacitor (C1) |
| 4 - OUTDIS | Digital input | Controls shutdown behavior: high = active output discharge to GND; low = high-impedance hold |
| 5 - EN | Enable input | Active-high chip enable: drives device into shutdown (<1 µA ISD) when low |
| 6 - VOUT | Regulated output | 5-V supply rail - delivers up to 200 mA with ≤50 mV load regulation error (VIN = 3.3 V) |
| 7 - VIN | Power input | Accepts 2.7–5.5 V - includes UVLO (2.4 V/2.6 V thresholds) and 600-mA input current limit |
| 8 - GND | Ground reference | Primary signal and power return; thermal pad must be connected to PCB GND plane for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Inductor-less architecture | Eliminates magnetic components - reduces BOM cost, EMI, and board area; uses only three 0402/0603 ceramic caps |
| Pre-regulated charge pump | Minimizes input current ripple - avoids noise coupling into sensitive analog rails (e.g., radar receivers, camera ISPs) |
| Configurable shutdown discharge | OUTDIS pin selects between active pull-down (450 µA sink) or high-Z hold - enables safe coexistence with USB OTG or shared 5-V buses |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive reliability and lifetime requirements for ADAS ECUs |
| Thermally robust WSON-8 | RθJA = 71.6°C/W - enables full 200-mA output in compact layouts when thermal pad is properly connected to PCB copper |
Applications
| ADAS Camera Power Supply | CAN Transceiver Bias |
|---|---|
|
Use Scenario: Powers image sensor and ISP in forward-facing camera modules requiring stable 5-V rail during vehicle start-stop cycles. IC Role / Device Role / Timing Role: Regulated 5-V boost converter supplying up to 200 mA from 3.3-V domain; provides clean, low-ripple output with PFM mode for standby current reduction. Use Value: Enables compact, inductor-free camera ECU designs compliant with ASIL-B functional safety constraints and automotive thermal profiles. |
Use Scenario: Supplies isolated 5-V bias to high-speed CAN FD transceivers in body control modules and gateway ECUs. IC Role / Device Role / Timing Role: Low-noise, fast-starting 5-V source with <10-ms startup time and UVLO protection - ensures reliable CAN bus wake-up after ignition. Use Value: Eliminates need for discrete LDO + buck stages; reduces solution size by >40% vs. inductor-based alternatives while maintaining EMC compliance. |
| Millimeter-Wave Radar Supply | Automotive Infotainment USB Hub |
|
Use Scenario: Generates clean 5-V supply for RF front-end ICs and ADCs in 77-GHz radar sensors operating under wide temperature swings. IC Role / Device Role / Timing Role: Pre-regulated switched-capacitor doubler delivering 5 V ±2% across –40°C to +125°C junction; PFM mode cuts IQ to 75 µA during radar sleep states. Use Value: Achieves <15 mVpp output ripple without LC filtering - preserves SNR in high-resolution radar sampling paths. |
Use Scenario: Provides auxiliary 5-V rail for USB Type-C hub controllers in head units, supporting hot-plug detection and enumeration. IC Role / Device Role / Timing Role: Configurable output disconnect (OUTDIS) allows seamless handover to host-supplied VBUS without brownout or backfeed. Use Value: Prevents bus contention during USB role swap; eliminates need for external ideal diode or load switch in compact infotainment PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60403QDGSRQ1 | Lower max output current (60 mA), fixed 3.3-V output; no PFM mode or OUTDIS control | Limited to low-power logic rails - unsuitable for CAN transceivers or radar sensors requiring 200 mA at 5 V | Select only if 3.3-V output and <60 mA load are sufficient; verify thermal derating at 125°C ambient |
| LM27762QDSGTQ1 | Same WSON-8 package and AEC-Q100 Grade 1 rating; delivers 250 mA at 5 V but requires larger 2.2-µF flying cap | Better current capability and slightly improved efficiency above 150 mA - trades minor BOM cost for higher headroom | Preferred for new designs needing margin beyond 200 mA; shares identical pinout and layout footprint with LM2775QDSGTQ1 |
Compared with TPS60403QDGSRQ1, LM2775QDSGTQ1 delivers 3.3× more output current at 5 V with PFM optimization for always-on systems; versus LM27762QDSGTQ1, it offers identical pin compatibility with tighter 1-µF flying cap requirement - simplifying layout while meeting baseline ADAS power needs.
Availability
LM2775QDSGTQ1 is available at Aetrix Electronics and suitable for ADAS camera power supplies, CAN transceiver biasing, and millimeter-wave radar subsystems requiring stable component supply across automotive production lifecycles.
Supply support for LM2775QDSGTQ1 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
Texas Instruments is a global semiconductor leader designing analog ICs, embedded processors, and automotive-grade power management solutions with emphasis on reliability, safety, and system-level integration.
The LM2775QDSGTQ1 belongs to TI's automotive-qualified switched-capacitor DC/DC converter family, engineered specifically to replace inductor-based boost stages in space-constrained ADAS and infotainment ECUs where EMI, thermal, and BOM cost are critical.
FAQ
What is the maximum output current capability of the LM2775QDSGTQ1 across its input voltage range?
The LM2775QDSGTQ1 delivers up to 200 mA of regulated 5-V output current when VIN is between 3.1 V and 5.5 V. At the lower end of its input range (VIN = 2.7 V), maximum output current drops to 125 mA due to internal current limiting and pre-regulator headroom constraints. This behavior is confirmed in Section 6.3 of the datasheet and validated across –40°C to +125°C junction temperature.
Does the LM2775QDSGTQ1 require an inductor in its application circuit?
No, the LM2775QDSGTQ1 is an inductor-less switched-capacitor boost converter. It operates using a flying capacitor (C1 = 1 µF) and two external 2.2-µF ceramic capacitors (CIN and COUT). This architecture eliminates magnetic components, reducing EMI, board area, and BOM cost - a key differentiator versus inductive boost converters like the TPS61088-Q1.
How does the PFM pin affect quiescent current and output ripple in the LM2775QDSGTQ1?
When the PFM pin is driven high, the LM2775QDSGTQ1 enters pulse-frequency modulation mode, reducing quiescent current to 75 µA (typ.) at zero load - ideal for automotive always-on domains. In this mode, switching bursts only when VOUT droops below ~5.05 V, increasing output ripple. When PFM is low, the device runs at fixed 2-MHz PWM, raising IQ to 5 mA but delivering lower, predictable ripple - preferred for noise-sensitive radar or camera analog circuits.
What thermal design considerations apply to the LM2775QDSGTQ1 in automotive environments?
The LM2775QDSGTQ1 uses a thermally enhanced WSON-8 package (RθJA = 71.6°C/W) with an exposed thermal pad that must be soldered to a PCB GND plane. At full 200-mA load and VIN = 5.5 V, power dissipation reaches ~1.35 W. To avoid thermal shutdown (150°C), ensure ≥200 mm² of 2-oz copper connected to the thermal pad and minimize ambient temperature rise in sealed enclosures - validated per Section 6.4 and Figure 6-10 of the datasheet.
Can the LM2775QDSGTQ1 be used to power a USB OTG port in an automotive infotainment system?
Yes - the LM2775QDSGTQ1 supports USB OTG use cases via its OUTDIS pin. When OUTDIS = 0, the output remains in high-impedance state during shutdown, preventing backfeed from host-supplied VBUS. When OUTDIS = 1, it actively discharges VOUT to GND. This dual-mode behavior, combined with fast startup (<10 ms) and AEC-Q100 qualification, makes LM2775QDSGTQ1 suitable for automotive USB hubs requiring safe role negotiation and hot-plug compliance.
LM2775QDSGTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 200mA
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
LM2775QDSGTQ1 FAQ
1.How can I place an order for LM2775QDSGTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2775QDSGTQ1 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 LM2775QDSGTQ1 reliable?
The price and inventory of LM2775QDSGTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2775QDSGTQ1 is usually 5 days.
3.What payment methods are accepted for LM2775QDSGTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2775QDSGTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2775QDSGTQ1?
LM2775QDSGTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2775QDSGTQ1 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 LM2775QDSGTQ1?
For technical support, including LM2775QDSGTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2775QDSGTQ1 requirements.
6.How does Aetrix verify that LM2775QDSGTQ1 is sourced from the original manufacturer or authorized distributors?
All LM2775QDSGTQ1 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 LM2775QDSGTQ1 meets industry standards.
7.What is the process for return or replacement of LM2775QDSGTQ1?
All LM2775QDSGTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2775QDSGTQ1, 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 LM2775QDSGTQ1 part is unused and in its original packaging.
Return procedure for LM2775QDSGTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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