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Texas Instruments TPS62100DRG4
- Part No.:
- TPS62100DRG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS62100DRG4.pdf
- Description:
- IC REG BUCK ADJ 500MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,504
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Product details
Overview
TPS62100DRG4 from Texas Instruments is a 300-kHz fixed-frequency synchronous buck converter IC designed for single/dual Li-ion battery-powered portable systems. It operates from 2.5 V to 9 V input, delivers adjustable 0.8 V to 8 V output at up to 500 mA, and features dual-auto-mode switching between constant-frequency PWM and light-load PFM for high efficiency across load range - deployed in GPS devices and digital still cameras.
For engineers reviewing the TPS62100DRG4 datasheet, TPS62100DRG4 pinout, TPS62100DRG4 application, or TPS62100DRG4 equivalent, key selection considerations include its 300 kHz switching frequency, SOIC-8 package, SD/SYNC dual-function pin for synchronization/shutdown, MODE pin-selectable operating modes, and integrated N-FET/P-FET switch with 0.3 Ω/0.5 Ω RDS(on) at 7.2 V.
Technical Context
The TPS62100DRG4 implements voltage-mode PWM control with an internal 0.8-V reference and error amplifier (80 dB gain, 5 MHz unity-gain bandwidth). Its tri-state MODE pin selects forced constant-frequency, forced variable-frequency, or automatic mode - where load-dependent transition between PWM and PFM preserves efficiency below ~100 mA.
The SD/SYNC pin provides both external clock synchronization (up to 600 kHz for this variant) and shutdown control (>20 µs high pulse), while the COMP pin supports loop compensation via external RC network. Integrated overcurrent protection includes two thresholds (1 A pulse termination, 1.2 A soft-start trigger) and thermal shutdown at 170°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 300 kHz nominal; enables compact 15 µH inductor and low EMI in portable designs. |
| Input Voltage Range | 2.5 V to 9 V; supports 1-cell (2.5–4.2 V) and 2-cell (5–8.4 V) Li-ion battery operation. |
| Output Voltage Range | Adjustable 0.8 V to 8 V via FB resistor divider; precise 800 mV feedback reference (±23 mV over –40°C to 85°C). |
| Max Output Current | 500 mA continuous; limited by internal 1.2 A current-sense threshold and thermal design. |
| Quiescent Current | 250 µA typical in burst mode; extends battery life in standby without external enable circuitry. |
| RDS(on) (N-FET / P-FET) | 0.3 Ω / 0.5 Ω at VIN = 7.2 V; reduces conduction loss and improves full-load efficiency >90%. |
| Shutdown Current | 1 µA typical; minimizes battery drain during storage or system sleep states. |
Pinout & Package
TPS62100DRG4 is housed in an 8-pin SOIC (D) package (5.0 mm × 6.2 mm, 1.75 mm height), surface-mount, RoHS-compliant, with standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 2.5–9 V DC; connects to bulk input capacitor and feeds internal regulators and switches. |
| SD/SYNC (Pin 2) | Dual-function control | Pulse ≥20 µs high → shutdown; rising-edge-triggered 0–2 V signal → synchronizes internal oscillator to external clock. |
| MODE (Pin 3) | Operating mode selector | Float → auto-switching between PWM/PEM; high → forced PWM; low → forced PFM (100 mA max). |
| AGND (Pin 4) | Analog ground reference | Reference for internal bandgap, error amp, and comparators; must be star-connected to minimize noise coupling. |
| COMP (Pin 5) | Error amplifier output | Connects to FB via RC compensation network; high-impedance in PFM mode to prevent offset drift. |
| FB (Pin 6) | Feedback input | Senses divided output voltage; regulated to 800 mV ±23 mV; thresholds (777–823 mV) govern auto-mode transitions. |
| PGND (Pin 7) | Power ground return | High-current return path for SW node and internal FETs; separate from AGND to avoid ground bounce. |
| SW (Pin 8) | Switch node | Drives external inductor; swings from near 0 V to VIN; requires low-inductance layout and Schottky catch diode (e.g., 10BQ040). |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation (PWM/PEM/auto) | Enables optimal efficiency across 0–500 mA load range without external mode-control logic. |
| Integrated N-FET and P-FET | Eliminates need for external synchronous rectifier diode, reducing BOM count and PCB area. |
| 0%–100% duty cycle capability | Supports wide VIN-to-VOUT ratios including 1.8 V out from 2.5 V in (dropout < 0.7 V at 500 mA). |
| Built-in soft-start (5 ms) | Prevents inrush current and output overshoot during power-up; closed-loop ramp of internal reference. |
| Dual-level overcurrent protection | 1 A fast-trip + 1.2 A soft-start recovery prevents latch-up during short-circuit or overload events. |
Applications
| GPS Devices | Digital Still Cameras |
|---|---|
Use Scenario: Powering RF front-end, baseband processor, and GNSS receiver from dual Li-ion cells (5–8.4 V). IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 3.3 V or 2.8 V to sensitive analog and digital subsystems. Use Value: Auto-mode switching maintains >85% efficiency at 10 mA GPS tracking current and >90% at 300 mA acquisition burst. |
Use Scenario: Supplying image sensor, ISP, and LCD backlight driver in compact handheld camera modules. IC Role / Device Role / Timing Role: Adjustable-output buck converter generating 1.8 V core and 3.3 V I/O rails from single Li-ion cell. Use Value: 300 kHz switching allows use of small 15 µH shielded inductor; low quiescent current extends standby time between shots. |
| Cellular Telephones | Satellite Telephones |
Use Scenario: Regulating power to baseband SoC and RF transceiver in legacy 2G/3G handsets with tight thermal constraints. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter stepping down from 7.2 V battery pack to 2.5 V/3.3 V system rails. Use Value: Dual-auto-mode eliminates need for external load-detection circuitry while maintaining <100 mV load regulation from 10–500 mA. |
Use Scenario: Providing robust power to L-band transceiver and FEC decoder in satellite phone terminals operating in extreme ambient temperatures. IC Role / Device Role / Timing Role: Primary DC/DC converter with thermal shutdown (170°C) and wide-input tolerance for variable solar-charged battery packs. Use Value: SOIC-8 package offers proven reliability and manufacturability in ruggedized industrial assemblies; 85°C junction rating ensures operation in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62040DRCT | 2.5–6 V input, 1.2–6 V output, 1.2 MHz switching, 600 mA rated; QFN-10 package. | Better suited for space-constrained, higher-frequency designs requiring <1 µH inductors; lacks auto-mode PFM. | Select TPS62040DRCT when board area is critical and fixed 1.2 MHz operation simplifies EMI filtering. |
| TPS62231DRYR | 2.05–6.5 V input, 0.6–6.5 V output, 3 MHz switching, 600 mA; 6-pin WSON package; integrated soft-start. | Higher frequency enables smaller passive components but increases switching loss above 300 mA; no MODE pin flexibility. | Choose TPS62231DRYR for ultra-compact footprint and simplified design where auto-mode is not required. |
Compared with TPS62100DRG4, the TPS62040DRCT offers higher frequency and current but sacrifices multimode efficiency optimization, while the TPS62231DRYR trades package size and integration for loss of programmable operation modes and wider input range.
Availability
TPS62100DRG4 is available at Aetrix Electronics and suitable for GPS devices, digital still cameras, and cellular telephones requiring stable component supply across extended temperature and battery-voltage ranges.
Supply support for TPS62100DRG4 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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC/DC conversion.
The TPS6210x family was engineered specifically for portable Li-ion battery systems demanding high light-load efficiency, multimode flexibility, and robust protection - targeting handheld communications and navigation equipment.
FAQ
What is the switching frequency of the TPS62100DRG4?
The TPS62100DRG4 is the 300 kHz version of the TPS6210x family. Its nominal switching frequency is 300 kHz, with typical variation of ±25% (225–375 kHz) over input voltage and temperature. This frequency is factory-set and cannot be adjusted externally, though it can be synchronized to an external clock up to 600 kHz using the SD/SYNC pin.
How does the TPS62100DRG4 achieve high efficiency at light loads?
The TPS62100DRG4 achieves high light-load efficiency through its auto-mode operation, which automatically transitions from constant-frequency PWM to pulsed-variable-frequency (PFM) mode when output current drops below ~100 mA. In PFM mode, it regulates output by controlling burst frequency rather than duty cycle, reducing switching losses and quiescent current to 250 µA typical.
What package type and pin count does the TPS62100DRG4 use?
The TPS62100DRG4 uses an 8-pin SOIC (D) package - a standard surface-mount outline measuring 5.0 mm × 6.2 mm with 1.27 mm lead pitch. It is RoHS-compliant and compatible with automated reflow assembly processes. The 'DRG4' suffix confirms this specific tape-and-reel packaging variant per TI's ordering nomenclature.
Can the TPS62100DRG4 be synchronized to an external clock?
Yes, the TPS62100DRG4 supports external synchronization via its SD/SYNC pin. Applying a clean 0–2 V square wave with rising-edge triggering synchronizes the internal oscillator. For this 300 kHz variant, the maximum supported sync frequency is 600 kHz. Synchronizing above this limit risks reduced sawtooth amplitude and increased PWM gain sensitivity to noise.
What protection features are built into the TPS62100DRG4?
The TPS62100DRG4 integrates three protection mechanisms: (1) dual-level overcurrent protection (1 A fast-trip, 1.2 A soft-start recovery), (2) thermal shutdown at 170°C junction temperature, and (3) input undervoltage lockout (UVLO) inherent in its 2.5 V minimum input specification. These ensure robust operation under fault conditions without external circuitry.
TPS62100DRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 9V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 8V
- Current - Output:
- 500mA
- Frequency - Switching:
- 300kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS62100DRG4 FAQ
1.How can I place an order for TPS62100DRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62100DRG4 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 TPS62100DRG4 reliable?
The price and inventory of TPS62100DRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62100DRG4 is usually 5 days.
3.What payment methods are accepted for TPS62100DRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62100DRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62100DRG4?
TPS62100DRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62100DRG4 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 TPS62100DRG4?
For technical support, including TPS62100DRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62100DRG4 requirements.
6.How does Aetrix verify that TPS62100DRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62100DRG4 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 TPS62100DRG4 meets industry standards.
7.What is the process for return or replacement of TPS62100DRG4?
All TPS62100DRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62100DRG4, 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 TPS62100DRG4 part is unused and in its original packaging.
Return procedure for TPS62100DRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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