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Texas Instruments LM2775QDSGRQ1
- Part No.:
- LM2775QDSGRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LM2775QDSGRQ1.pdf
- Description:
- IC REG CHARG PUMP 5V 200MA 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:11,854
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Product details
Overview
LM2775QDSGRQ1 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-V to 5.5-V input, delivers up to 200 mA, operates at 2 MHz, and requires only three ceramic capacitors-no inductor. It powers CAN transceivers and ADAS camera modules in space-constrained automotive ECUs.
For engineers reviewing the LM2775QDSGRQ1 datasheet, LM2775QDSGRQ1 pinout, LM2775QDSGRQ1 application, or LM2775QDSGRQ1 equivalent, key selection considerations include its PFM/PWM mode control via the PFM pin, output discharge behavior governed by OUTDIS, thermal shutdown threshold (150°C), input current limit (600 mA), and WSON-8 package thermal performance (RθJA = 71.6°C/W).
Technical Context
The LM2775QDSGRQ1 implements pre-regulation before voltage doubling: internal current-controlled switches modulate charge transfer through an external flying capacitor (C1) to regulate output prior to stacking, minimizing input current ripple. Its two-phase non-overlapping clock drives S1–S4 MOSFET switches synchronized to a 2-MHz oscillator.
Regulation is maintained across –40°C to +125°C ambient via internal 1.2-V reference and feedback loop controlling V′ in the pre-regulator stage. Output discharge state (active pull-down vs. high-Z) is selected by OUTDIS, while PFM pin enables burst-mode operation below ~10 mA load to reduce quiescent current to 75 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 5 V ±4% (4.8–5.2 V) under 180-mA load; maintains regulation down to 2.7-V input. |
| Input voltage range | 2.7 V to 5.5 V - supports direct connection to automotive 3.3-V rails and cold-crank tolerant systems. |
| Max output current | 200 mA at VIN ≥ 3.1 V; drops to 125 mA at VIN = 2.7 V due to pre-regulator headroom limits. |
| Switching frequency | 2 MHz typical (1.7–2.3 MHz) - enables use of 0402-size 1-µF flying capacitor and low-ESR 2.2-µF ceramics. |
| Quiescent current | 75 µA in PFM mode (IOUT = 0 mA); 5 mA in PWM mode - critical for always-on vehicle networks. |
| Thermal shutdown | Activates at TJ = 150°C with 20°C hysteresis - protects against self-heating during sustained 200-mA operation at high VIN. |
| Undervoltage lockout | Shuts down at VIN < 2.4 V (rising threshold = 2.6 V) - prevents erratic startup during battery sag. |
Pinout & Package
LM2775QDSGRQ1 uses the TI 8-pin WSON (DSG) package: 2.00 mm × 2.00 mm body with exposed thermal pad soldered to PCB ground plane for RθJB = 41.5°C/W thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PFM | Digital input | Enables PFM burst mode when high (reducing IQ to 75 µA); forces fixed 2-MHz PWM when low. |
| 2 - C1– | Flying capacitor terminal | Connects to negative plate of 1-µF ceramic flying capacitor; forms charge-transfer path with C1+. |
| 3 - C1+ | Flying capacitor terminal | Connects to positive plate of 1-µF ceramic flying capacitor; alternately ties to VIN (φ1) and VOUT (φ2). |
| 4 - OUTDIS | Digital input | When high: actively discharges VOUT to GND during shutdown; when low: holds VOUT in high-Z state. |
| 5 - EN | Enable input | Active-high logic; pulls device into shutdown drawing ≤3 µA when low; enables regulation when high. |
| 6 - VOUT | Regulated output | Delivers 5-V supply to load; includes internal overcurrent and thermal protection; connects to 2.2-µF output cap. |
| 7 - VIN | Power input | Accepts 2.7–5.5 V; feeds pre-regulator and flying capacitor charge path; connects to 2.2-µF input capacitor. |
| 8 - GND | Ground reference | Primary signal and power return; thermal pad must be connected to PCB ground plane for thermal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Inductor-less architecture | Eliminates magnetic components - reduces EMI, board area, and BOM cost in CAN/ADAS modules. |
| Pre-regulation topology | Minimizes input current ripple (<10 mA p-p) versus conventional charge pumps - preserves integrity of shared 3.3-V rail. |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient) - certified for engine bay, radar, and camera ECU deployment. |
| Configurable shutdown behavior | OUTDIS pin selects between active output discharge (for safety-critical reset) or high-Z hold (for USB-OTG rail sharing). |
| Integrated protections | Current limit (600 mA), thermal shutdown (150°C), and UVLO (2.4 V) - enable robust operation without external circuitry. |
Applications
| Power for CAN Transceiver | Millimeter Wave Radar Supply |
|---|---|
Use Scenario: Provides isolated 5-V bias to high-speed CAN FD transceivers in gateway ECUs where 3.3-V system rail cannot directly drive transceiver VCC. IC Role / Device Role / Timing Role: Regulated switched-capacitor boost converter delivering stable 5-V/200-mA output with <50-mV load regulation error. Use Value: Enables CAN transceiver compliance with ISO 11898-2 while eliminating inductor size and EMI concerns in dense PCB layouts. |
Use Scenario: Supplies clean 5-V power to RF front-end ICs and ADCs in 77-GHz automotive radar modules operating in extreme temperature environments. IC Role / Device Role / Timing Role: Low-noise, thermally robust boost source supporting continuous 150-mA load at +105°C ambient. Use Value: Maintains output regulation within ±2% across full automotive temperature range without derating - critical for radar signal integrity. |
| ADAS Camera Power Supply | Post-Boost for Pre-Regulated Systems |
Use Scenario: Powers image sensor and ISP in surround-view cameras where space constraints prohibit inductor-based solutions. IC Role / Device Role / Timing Role: Compact 5-V supply with PFM mode enabling <100-µA quiescent draw during camera sleep states. Use Value: Reduces standby power by >95% versus PWM-only alternatives - extends battery life in parking-assist systems. |
Use Scenario: Boosts 3.3-V domain to 5-V for legacy peripherals (e.g., LIN transceivers, EEPROMs) in architectures lacking wide-input pre-boost stages. IC Role / Device Role / Timing Role: Post-regulator generating precise 5-V output from stabilized intermediate rail - no cold-crank support required. Use Value: Simplifies power tree design by removing need for dual-input buck-boost ICs - lowers system cost and layout complexity. |
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 | Fixed 5-V output, 60-mA max, 1-MHz switching, no PFM mode, same WSON-8 package. | Limited to low-power sensors and microcontrollers - insufficient for CAN transceivers or radar loads. | Select when output current ≤60 mA and ultra-low EMI is prioritized over efficiency at light load. |
| LM27762QDSGRQ1 | 5-V output, 250-mA max, 2.1-MHz switching, integrated soft-start, same AEC-Q100 Grade 1 rating. | Higher output current and improved transient response - suitable for next-gen ADAS with higher pixel counts. | Choose for new designs requiring >200 mA or tighter output voltage accuracy (±2.5% vs. ±4%). |
Compared with LM2775QDSGRQ1, TPS60403QDGSRQ1 trades output current and PFM flexibility for lower quiescent current in ultra-low-power roles, while LM27762QDSGRQ1 extends capability with higher current and tighter regulation - both share pin-compatible WSON-8 packaging but differ in internal control architecture and protection thresholds.
Availability
LM2775QDSGRQ1 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, millimeter-wave radar subsystems, and CAN FD gateway ECUs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2775QDSGRQ1 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 connectivity solutions for automotive, industrial, and personal electronics markets.
The LM2775QDSGRQ1 belongs to TI's automotive-grade switched-capacitor power management portfolio, engineered specifically to replace inductor-based boost converters in space- and noise-sensitive ADAS and body electronics applications.
FAQ
What is the maximum output current of the LM2775QDSGRQ1 and under what conditions?
The LM2775QDSGRQ1 delivers up to 200 mA of continuous output current when the input voltage is between 3.1 V and 5.5 V. At 2.7 V input, maximum output current drops to 125 mA due to reduced headroom for the internal pre-regulator stage. This limitation is confirmed in Section 6.3 of the datasheet and verified across –40°C to +125°C junction temperature. The LM2775QDSGRQ1 maintains regulation within ±4% across this full current range.
Does the LM2775QDSGRQ1 require an inductor in its application circuit?
No, the LM2775QDSGRQ1 is an inductor-less switched-capacitor boost converter. It uses only three external ceramic capacitors: a 1-µF flying capacitor (C1) between C1+ and C1– pins, and 2.2-µF input (VIN) and output (VOUT) capacitors. This eliminates magnetic components, reducing EMI, board area, and BOM cost - a key advantage over inductive boost solutions in compact automotive modules.
How does the PFM pin affect the operation of the LM2775QDSGRQ1?
The PFM pin on the LM2775QDSGRQ1 controls the device's light-load efficiency mode: when pulled high, it enables pulse-frequency modulation, reducing quiescent current to 75 µA at zero load; when pulled low, it forces fixed 2-MHz PWM operation with 5-mA quiescent current. This selection directly impacts standby power in always-on vehicle networks and is validated in Section 6.5 (Electrical Characteristics) and Figure 6-8/6-9.
What thermal performance can be expected from the LM2775QDSGRQ1 in a standard PCB layout?
In a standard 4-layer PCB with 1-in² 2-oz copper thermal pad connected to the exposed thermal pad of the WSON-8 package, the LM2775QDSGRQ1 achieves RθJA = 71.6°C/W and RθJB = 41.5°C/W. This allows full 200-mA operation at +85°C ambient without thermal shutdown - confirmed by thermal testing in Section 6.4 and Figure 6-10. Layout adherence to TI's guidelines (Section 10) is essential to maintain this performance.
Is the LM2775QDSGRQ1 pin-compatible with other TI switched-capacitor boost converters?
The LM2775QDSGRQ1 is not pin-compatible with TI's TPS60403QDGSRQ1 or LM27762QDSGRQ1 - although all use WSON-8 packages, pin functions differ significantly (e.g., PFM and OUTDIS assignments vary). Direct replacement requires schematic and layout revision. Pin mapping is strictly defined in Table 5-1 of the LM2775QDSGRQ1 datasheet and must be verified per design.
LM2775QDSGRQ1 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)
LM2775QDSGRQ1 FAQ
1.How can I place an order for LM2775QDSGRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2775QDSGRQ1 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 LM2775QDSGRQ1 reliable?
The price and inventory of LM2775QDSGRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2775QDSGRQ1 is usually 5 days.
3.What payment methods are accepted for LM2775QDSGRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2775QDSGRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2775QDSGRQ1?
LM2775QDSGRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2775QDSGRQ1 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 LM2775QDSGRQ1?
For technical support, including LM2775QDSGRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2775QDSGRQ1 requirements.
6.How does Aetrix verify that LM2775QDSGRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2775QDSGRQ1 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 LM2775QDSGRQ1 meets industry standards.
7.What is the process for return or replacement of LM2775QDSGRQ1?
All LM2775QDSGRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2775QDSGRQ1, 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 LM2775QDSGRQ1 part is unused and in its original packaging.
Return procedure for LM2775QDSGRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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