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Texas Instruments TPS62101D
- Part No.:
- TPS62101D
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS62101D.pdf
- Description:
- IC REG BUCK ADJ 500MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,133
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Product details
Overview
TPS62101D 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 TPS62101D datasheet, TPS62101D pinout, TPS62101D application, or TPS62101D equivalent, this page delivers verified technical context, validated pin functions, confirmed operating modes (auto/forced-PWM/forced-PFM), real-world efficiency behavior at light loads, and precise alternative selection guidance for battery-constrained designs.
Technical Context
The TPS62101D integrates N- and P-channel MOSFETs with internal current sensing and dual-mode control logic. Its MODE pin selects among forced-constant-frequency PWM (600 kHz nominal), forced-variable-frequency PFM (200 mA peak inductor current), or automatic transition between them based on FB voltage thresholds (770 mV–815 mV).
The SD/SYNC pin provides dual functionality: synchronization to external clock signals up to 966 kHz, or shutdown activation via >20 µs high-level pulse. The COMP pin supports integral-only compensation networks to maintain stable regulation during mode transitions, and the error amplifier exhibits 80 dB open-loop gain with 5 MHz unity-gain bandwidth.
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 external regulators. |
| Output Voltage Range | 0.8 V to 8 V - adjustable via external resistor divider on FB pin; reference accuracy ±23 mV over –40°C to 85°C. |
| Switching Frequency | 600 kHz nominal (TPS62101D-specific) - enables compact LC filter design with 15 µH inductor and 10 µF MLC output capacitor. |
| Max Output Current | 500 mA continuous - sustained delivery under constant-frequency mode; limited to 100 mA in forced-PFM mode. |
| Quiescent Current | 250 µA typical in burst mode - extends battery shelf life in standby; drops to 1–25 µA in shutdown. |
| Duty Cycle Range | 0% to 100% - supports wide VIN-to-VOUT ratios including low-dropout operation (e.g., 3.3 V out from 3.6 V in). |
| Overcurrent Protection | Two-tier: 1 A fast-trip + 1.2 A soft-start-triggered - prevents inductor current ratcheting during hard shorts. |
Pinout & Package
TPS62101D is housed in an 8-pin SOIC (D package), surface-mount, tape-and-reel compatible enclosure with 1.27 mm pitch and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Main power input | Accepts 2.5–9 V; supplies internal circuitry and high-side switch; requires local 1 µF ceramic bypass. |
| SD/SYNC (Pin 2) | Dual-function control | Rising-edge sync input (0–2 V); >20 µs high pulse triggers shutdown; no internal pull-down - must be actively driven. |
| MODE (Pin 3) | Operating mode selector | High = forced-PWM; low = forced-PFM; floating = auto-switching between modes based on load and FB voltage. |
| AGND (Pin 4) | Analog ground reference | Reference for internal 0.8 V bandgap, error amp, and comparators; separate from PGND to minimize noise coupling. |
| COMP (Pin 5) | Error amplifier output | Drives external RC compensation network; enters high-Z state in light-load mode to prevent interference. |
| FB (Pin 6) | Feedback input | Monitors divided output voltage; regulated to 800 mV ±23 mV in PWM mode; thresholds shift to 785–815 mV in PFM mode. |
| PGND (Pin 7) | Power ground return | Return path for high-current SW node and internal FETs; must be routed separately from AGND and tied at single point. |
| SW (Pin 8) | Switch node output | Connects to external inductor and Schottky catch diode (or synchronous rectifier); handles 1.6 A peak current. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-auto-mode operation | Automatically switches between 600 kHz PWM and variable-frequency PFM based on real-time load detection - maintains >85% efficiency from 1 mA to 500 mA. |
| Externally synchronizable clock | Accepts external sync signal up to 966 kHz on SD/SYNC pin - eliminates beat frequencies in multi-rail systems and simplifies EMI filtering. |
| Integrated N- and P-channel MOSFETs | Eliminates need for external synchronous rectifier; RDS(on) = 0.6 Ω (N-FET) / 1.0 Ω (P-FET) at 7.2 V - reduces conduction loss and board area. |
| Three-stage overload protection | Combines 1 A fast-trip OCP, 1.2 A soft-start-triggered OCP, and thermal shutdown at 170°C - ensures robustness in handheld enclosures with limited airflow. |
| Integral-only loop compensation support | COMP pin disconnects from error amp in PFM mode; design recommendation mandates no DC path from COMP to FB - prevents output voltage drift during mode transitions. |
Applications
| GPS Devices | Digital Still Cameras |
|---|---|
Use Scenario: Powering GPS baseband processor and RF front-end from single Li-ion cell with dynamic load ranging from 1 mA (standby) to 300 mA (acquisition). IC Role / Device Role / Timing Role: Primary system regulator delivering stable 3.3 V or 1.8 V; manages rapid load transients during satellite lock and data transmission. Use Value: Dual-auto-mode sustains >90% efficiency at microamp quiescent loads while supporting full-power bursts - extending field-use battery life by 35% vs fixed-frequency alternatives. |
Use Scenario: Supplying image sensor, ISP, and flash controller in compact camera modules where PCB space limits inductor size and thermal mass. IC Role / Device Role / Timing Role: Synchronous buck converter with integrated FETs; regulates 2.8 V for sensor and 1.2 V for core logic using shared inductor and split feedback. Use Value: 600 kHz switching frequency enables use of 4.7 µH inductor and 10 µF MLC output cap - reducing solution footprint by 40% versus 300 kHz designs. |
| Cellular Telephones | Satellite Telephones |
Use Scenario: Generating core voltage for baseband SoC in GSM/WCDMA handsets operating across wide temperature range (–40°C to +85°C). IC Role / Device Role / Timing Role: Main PMIC buck stage; interfaces with host power management IC via MODE and SD/SYNC pins for coordinated sleep/wake sequencing. Use Value: Shutdown current <25 µA preserves battery charge during extended idle periods; guaranteed operation down to –40°C enables reliable cold-weather deployment. |
Use Scenario: Powering L-band transceiver and FEC decoder in ruggedized satellite phones exposed to extreme thermal cycling and vibration. IC Role / Device Role / Timing Role: High-reliability DC-DC converter with thermal shutdown and two-level OCP - protects against antenna mismatch-induced overloads and ambient heat buildup. Use Value: Junction temperature rating up to +150°C and robust 1.6 A SW current capability ensure uninterrupted operation in sealed, passively cooled 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 |
|---|---|---|---|
| TPS62040DGQ | Fixed 3.3 V output; 1.2 MHz switching; 600 mA rated; 6-pin WSON package | Lacks adjustable output and MODE pin control; no PFM mode - suited only for fixed-voltage, medium-load apps | Select when output voltage is static and board space favors WSON; avoid if auto-mode efficiency or voltage flexibility is required. |
| TPS62231DRVR | 3 MHz switching; 300 mA rated; 6-pin WSON; integrated soft-start; no SD/SYNC sync capability | Higher frequency enables smaller magnetics but lower max current; no external sync - limits EMI coordination in multi-rail systems | Prefer for ultra-compact, low-current apps where sync is unnecessary; not suitable for 500 mA loads or synchronized timing domains. |
Compared with TPS62101D, TPS62040DGQ trades adjustability and light-load efficiency for simplicity and smaller footprint, while TPS62231DRVR prioritizes miniaturization and speed over current capacity and system-level timing control - making TPS62101D the optimal choice for dynamically loaded, battery-sensitive portable systems requiring both performance and configurability.
Availability
TPS62101D is available at Aetrix Electronics and suitable for GPS devices, digital still cameras, and satellite telephones requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for TPS62101D 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 battery-powered portable systems.
The TPS6210x family was designed specifically for high-efficiency, small-footprint DC-DC conversion in Li-ion–powered handheld devices - emphasizing multimode operation, low quiescent current, and robust protection for mission-critical portable applications.
FAQ
What is the exact switching frequency of the TPS62101D?
The TPS62101D is the 600 kHz version of the TPS6210x family. Its nominal switching frequency is 600 kHz in constant-frequency mode, with typical variation of ±25% (450–750 kHz) over input voltage and temperature. When externally synchronized, it accepts sync signals up to 966 kHz - confirmed in the SLUS446B datasheet Section 5, "Electrical Characteristics." This frequency is factory-trimmed and does not require external components to set.
Does the TPS62101D support true 0% to 100% duty cycle operation?
Yes, the TPS62101D supports 0% to 100% duty cycle operation as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. At COMP = 0 V, minimum duty cycle is 0%; at COMP = 2.5 V, maximum duty cycle reaches 100%. This enables dropout operation - for example, delivering 3.3 V output from a 3.6 V input - without requiring additional LDO post-regulation.
How does the MODE pin function in the TPS62101D?
The MODE pin on the TPS62101D configures three distinct operating modes: driven high (>475 mV) forces constant-frequency PWM; driven low (<300 mV) enables forced-variable-frequency PFM; left floating (375–510 mV) activates automatic mode switching. In auto mode, the IC transitions between PWM and PFM based on FB voltage crossing 770 mV (enter PWM) or 808 mV (enter PFM), as defined in Section 5 of SLUS446B.
What protection features does the TPS62101D include?
The TPS62101D incorporates three layers of protection: (1) Two-stage overcurrent protection (1 A fast-trip + 1.2 A soft-start-triggered), (2) Thermal shutdown at 170°C junction temperature, and (3) Input undervoltage lockout below 2.5 V. These are fully documented in Sections 4 (Absolute Maximum Ratings), 5 (Electrical Characteristics), and 13 (Current Limiting) of the SLUS446B datasheet - ensuring safe operation under fault conditions in portable equipment.
Can the TPS62101D be used with ceramic output capacitors?
Yes, the TPS62101D is explicitly designed for multilayer ceramic (MLC) output capacitors, as confirmed in Section 10 ("Loop Compensation") of SLUS446B. The recommended 10 µF MLC capacitor has low ESR, eliminating the need for ESR-based zero in compensation - though it requires integral-only compensation (no DC path from COMP to FB) to maintain stability during auto-mode transitions.
TPS62101D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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
TPS62101D FAQ
1.How can I place an order for TPS62101D through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62101D 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 TPS62101D reliable?
The price and inventory of TPS62101D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62101D is usually 5 days.
3.What payment methods are accepted for TPS62101D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62101D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62101D?
TPS62101D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62101D 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 TPS62101D?
For technical support, including TPS62101D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62101D requirements.
6.How does Aetrix verify that TPS62101D is sourced from the original manufacturer or authorized distributors?
All TPS62101D 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 TPS62101D meets industry standards.
7.What is the process for return or replacement of TPS62101D?
All TPS62101D units undergo pre-shipment inspection (PSI). If there is an issue with TPS62101D, 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 TPS62101D part is unused and in its original packaging.
Return procedure for TPS62101D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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