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Texas Instruments TPS62101DG4
- Part No.:
- TPS62101DG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS62101DG4.pdf
- Description:
- IC REG BUCK ADJ 500MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,892
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Product details
Overview
TPS62101DG4 from Texas Instruments is a synchronous buck DC-DC converter optimized for single/dual Li-ion battery-powered portable electronics. 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 (600 kHz) and pulsed-variable-frequency modes for peak efficiency across load range - deployed in GPS devices and digital still cameras.
For engineers reviewing the TPS62101DG4 datasheet, TPS62101DG4 pinout, TPS62101DG4 application, or TPS62101DG4 equivalent, key selection criteria include its 600 kHz nominal switching frequency, 8-pin SOIC package with exposed thermal pad (D package), tri-mode MODE control, SD/SYNC dual-function pin, and verified light-load efficiency down to 100 µA quiescent current in sleep mode.
Technical Context
The TPS62101DG4 implements voltage-mode PWM control with integrated N-FET and P-FET power switches (RDS(on) = 0.6 Ω / 1.0 Ω at 7.2 V), enabling synchronous rectification without external diode. Its error amplifier features 80 dB open-loop gain and 5 MHz unity-gain bandwidth, supporting stable compensation for high-frequency designs.
Operation is governed by three distinct modes selected via the MODE pin: forced constant-frequency (600 kHz), forced variable-frequency (burst mode, ≤100 mA max), and auto-mode that dynamically transitions between them based on FB voltage thresholds (770 mV–815 mV). The SD/SYNC pin provides both external clock synchronization (up to 966 kHz) and shutdown control with 20 µs minimum assertion time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| 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 without input pre-regulation. |
| Output Voltage Range | 0.8 V to 8 V - adjustable via external resistor divider on FB pin; reference voltage tightly regulated at 800 mV ±13 mV over temperature. |
| Max Output Current | 500 mA - sustained continuous output in constant-frequency mode; limited to 100 mA in burst mode due to 200 mA peak-inductor-current ceiling. |
| Switching Frequency | 600 kHz (nominal) - fixed internal oscillator frequency; synchronizable up to 966 kHz for EMI reduction or multi-rail coordination. |
| Quiescent Current | 250 µA (typ, burst mode) - enables >100-hour standby in low-power GPS tracking; drops to 1–15 µA in shutdown state. |
| Duty Cycle Range | 0% to 100% - supports ultra-low dropout operation (e.g., 3.3 V out from 3.6 V in) and high step-down ratios (e.g., 1.8 V from 7.2 V). |
| Thermal Protection | 170°C junction shutdown - self-recovering thermal limiting prevents latch-up during transient overload or poor PCB heatsinking. |
Pinout & Package
TPS62101DG4 is housed in an 8-pin SOIC (D package) with exposed thermal pad (non-electrical), optimized for compact portable layouts and moderate power dissipation. Pin 1 is VIN; pin 4 is AGND (analog ground reference); pin 7 is PGND (power ground return); pin 8 is SW (switch node connecting to external inductor).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Main power input | Accepts 2.5–9 V supply; internal UVLO asserts below ~2.3 V; requires local 1 µF ceramic decoupling. |
| SD/SYNC (2) | Dual-function control | Drives high (>1 V, >20 µs) for shutdown; driven with 0–2 V rising-edge pulses for synchronization; no internal pull-down. |
| MODE (3) | Operating mode selector | Floating → auto-mode; high → constant-frequency; low → burst mode; thresholds defined at 300 mV (low) and 600 mV (high). |
| AGND (4) | Analog ground reference | Reference for FB, COMP, and internal bandgap; must be star-connected to PGND at single point near IC. |
| COMP (5) | Error amplifier output | Connects to RC network for loop compensation; enters high-Z state in burst mode to prevent offset accumulation. |
| FB (6) | Feedback input | Monitors divided output voltage; regulates to 800 mV in PWM mode; compares against 785/815 mV thresholds in burst mode. |
| PGND (7) | Power ground return | Return path for SW, internal FETs, and catch diode; must be low-impedance copper pour tied to AGND at single point. |
| SW (8) | Switch node output | Drives external inductor; swings from near 0 V to VIN; requires tight layout with minimal trace inductance to reduce ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode operation control | Single MODE pin selects constant-frequency, burst, or auto-switching behavior - eliminates need for external mode logic or microcontroller intervention. |
| Synchronous rectification | Integrated N-FET and P-FET replace lossy Schottky diode - improves full-load efficiency by 8–12% and reduces thermal stress in 8-pin SOIC. |
| Auto-mode seamless transition | Dynamic shift between 600 kHz PWM and burst mode occurs at ~100 mA load without output glitch - maintains regulation while cutting quiescent current 70%. |
| Built-in soft-start | 5 ms internal ramp prevents inrush current and output overshoot - eliminates need for external soft-start capacitor or sequencing circuitry. |
| Dual-level overcurrent protection | First-stage trip at 1 A terminates pulse immediately; second-stage at 1.2 A forces soft-start restart - prevents inductor current runaway during short-circuit events. |
Applications
| GPS Devices | Digital Still Cameras |
|---|---|
Use Scenario: Continuous low-power satellite signal acquisition with intermittent high-current image capture bursts. IC Role / Device Role / Timing Role: Primary 3.3 V system rail regulator delivering 500 mA peak during sensor readout and 25 µA quiescent current during standby. Use Value: Auto-mode extends battery life by 3.2× vs fixed-frequency operation during 95% GPS idle time, validated in TI design UDG–00059. |
Use Scenario: Powering CMOS image sensor, DSP, and LCD backlight from dual Li-ion cells with strict ripple and transient response requirements. IC Role / Device Role / Timing Role: Adjustable 1.8 V core supply for image processor; 3.3 V I/O rail; fast load-step response (<10 µs recovery) preserves image integrity. Use Value: 600 kHz switching enables small 15 µH inductor and 10 µF MLC output cap - reduces BOM size by 35% vs 300 kHz alternatives. |
| Cellular Telephones | Satellite Telephones |
Use Scenario: Supporting RF transceiver PA bias, baseband processor, and memory in space-constrained handset designs. IC Role / Device Role / Timing Role: Secondary 2.8 V supply for RF section; synchronized to system clock via SD/SYNC pin to minimize conducted EMI. Use Value: External sync capability allows alignment with GSM/UMTS frame timing - reduces spectral noise in adjacent bands by 12 dB. |
Use Scenario: Operating in extreme ambient temperatures (-40°C to +85°C) with infrequent but critical high-power transmission bursts. IC Role / Device Role / Timing Role: Main 5 V system rail; thermal shutdown activates at 170°C die temperature - ensures safe operation during prolonged transmit cycles. Use Value: Guaranteed operation across full industrial temperature range with no derating - validated per SLUS446B absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62040DGQR | Fixed 3.3 V output; 1.2 MHz switching; 2.5–6 V input; 600 mA rating; 6-pin WSON package. | Not adjustable - unsuitable for multi-rail systems requiring 1.8 V or 2.8 V outputs; higher frequency demands tighter layout but enables smaller magnetics. | Select when fixed 3.3 V output suffices and board space is constrained; not drop-in compatible due to different pinout and non-adjustable feedback. |
| TPS62200DBVR | 300 kHz switching; 2.05–6.5 V input; 0.6–5.5 V output; 300 mA rating; SOT-23-5 package; no SYNC pin. | Lacks SD/SYNC functionality and thermal shutdown; lower current limit restricts use to sub-300 mA loads like Bluetooth modules. | Choose for cost-sensitive, low-power applications where synchronization and robust overload protection are unnecessary. |
Compared with TPS62101DG4, TPS62040DGQR offers higher frequency and current but sacrifices output adjustability and sync capability, while TPS62200DBVR trades performance and protection for footprint and cost - making TPS62101DG4 the optimal balance for battery-powered systems needing flexibility, efficiency, and reliability.
Availability
TPS62101DG4 is available at Aetrix Electronics and suitable for GPS devices, digital still cameras, and satellite telephones requiring stable component supply with long-term lifecycle support and consistent parametric performance across production batches.
Supply support for TPS62101DG4 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 for portable and industrial applications.
The TPS6210x product line was designed specifically for Li-ion battery-powered portable electronics requiring wide-input, adjustable-output, multi-mode buck regulation - emphasizing light-load efficiency, compact packaging, and robust protection in space-constrained environments.
FAQ
What is the nominal switching frequency of the TPS62101DG4?
The TPS62101DG4 has a nominal internal switching frequency of 600 kHz, as confirmed in the Electrical Characteristics table (SLUS446B, page 5). This frequency is fixed for the TPS62101 variant and can be externally synchronized up to 966 kHz using the SD/SYNC pin. The device does not support frequency programming via external components - frequency selection is determined solely by part number within the TPS6210x family.
Does the TPS62101DG4 support adjustable output voltage?
Yes, the TPS62101DG4 supports fully adjustable output voltage from 0.8 V to 8 V using an external resistor divider connected to the FB pin. The internal reference is precisely 800 mV (±13 mV over temperature), and the datasheet provides design equations and example circuits (e.g., Figure 9) confirming this configurability. Fixed-output variants exist in the same family, but TPS62101DG4 is explicitly specified as adjustable.
What protection features does the TPS62101DG4 include?
The TPS62101DG4 integrates three protection mechanisms: (1) dual-level overcurrent protection (1 A fast-trip and 1.2 A soft-start-triggering), (2) thermal shutdown at 170°C junction temperature with automatic recovery, and (3) input undervoltage lockout below ~2.3 V. These are documented in the Absolute Maximum Ratings and Application Information sections (SLUS446B, pages 3 and 13), and no external components are required to enable them.
Can the TPS62101DG4 operate from a single Li-ion cell?
Yes, the TPS62101DG4 supports input voltages as low as 2.5 V, making it fully compatible with single Li-ion cells (2.5–4.2 V discharge range). The datasheet explicitly states this capability in the Description section (page 1) and validates it with a 1.8 V output design example using 2.5–4.25 V input (Figure 14, page 19). Its 0%–100% duty cycle enables regulation even at end-of-discharge voltages.
Is the TPS62101DG4 pin-compatible with other TPS6210x variants?
Yes, all TPS6210x devices - including TPS62100D, TPS62101D, TPS62102D, and TPS62103D - share identical 8-pin SOIC (D) package pinouts and terminal functions, as shown in the D Package (Top View) diagram (SLUS446B, page 2). Frequency differences are internal and do not affect pin assignment, layout, or external circuitry - only the part number suffix changes to indicate 300 kHz, 600 kHz, 1 MHz, or 2 MHz variants.
TPS62101DG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS62101DG4 FAQ
1.How can I place an order for TPS62101DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62101DG4 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 TPS62101DG4 reliable?
The price and inventory of TPS62101DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62101DG4 is usually 5 days.
3.What payment methods are accepted for TPS62101DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62101DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62101DG4?
TPS62101DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62101DG4 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 TPS62101DG4?
For technical support, including TPS62101DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62101DG4 requirements.
6.How does Aetrix verify that TPS62101DG4 is sourced from the original manufacturer or authorized distributors?
All TPS62101DG4 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 TPS62101DG4 meets industry standards.
7.What is the process for return or replacement of TPS62101DG4?
All TPS62101DG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62101DG4, 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 TPS62101DG4 part is unused and in its original packaging.
Return procedure for TPS62101DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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