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Texas Instruments TPS62102D
- Part No.:
- TPS62102D
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS62102D.pdf
- Description:
- IC REG BUCK ADJ 500MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,284
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Product details
Overview
TPS62102D from Texas Instruments is a 1-MHz synchronous buck DC-DC converter optimized for 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 auto-mode switching between constant-frequency PWM and pulsed-variable-frequency (PFM) for high efficiency across load ranges - used in GPS devices and digital still cameras.
For engineers reviewing the TPS62102D datasheet, TPS62102D pinout, TPS62102D application, or TPS62102D equivalent, this page provides verified technical context, real-world operating modes (auto/forced-PWM/forced-PFM), confirmed SOIC-8 package mapping, validated pin functions including SD/SYNC dual-role control, and two rigorously cross-checked alternative parts with documented functional and application-level differences.
Technical Context
The TPS62102D implements voltage-mode PWM control with integrated N-FET and P-FET switches (RDS(on) = 0.6 Ω / 1.0 Ω at 7.2 V), a 800-mV internal reference, and tri-state MODE pin logic enabling automatic, forced-PWM, or forced-PFM operation. Its error amplifier features 80 dB open-loop gain and 5 MHz unity-gain bandwidth, supporting stable compensation for 1-MHz switching.
It integrates three-stage overload protection: 1-A current-limit pulse termination, 1.2-A soft-start-triggering overcurrent, and thermal shutdown at 170°C. The SD/SYNC pin supports external synchronization up to 1.61 MHz and shutdown activation via >20 µs high pulse - both functions validated by absolute maximum and recommended operating condition tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1 MHz nominal; enables compact LC filter design with ≤15 µH inductors and 10 µF MLCC output capacitance. |
| Input Voltage Range | 2.5 V to 9 V; supports single or dual Li-ion battery stacks (2.5–4.2 V/cell) without external regulators. |
| Output Voltage Range | 0.8 V to 8 V; adjustable via FB resistor divider; 800-mV reference ensures ±1.5% accuracy over –40°C to 85°C. |
| Max Output Current | 500 mA continuous; sustained delivery enabled by integrated FETs with 0.6 Ω (N-FET) and 1.0 Ω (P-FET) RDS(on). |
| Efficiency Modes | Dual-auto-mode: seamless transition between 1-MHz PWM (heavy load) and PFM (light load, <100 mA) for >90% efficiency at 10 mA. |
| Quiescent Current | 250 µA typical in burst mode; extends battery shelf life during standby in handheld devices. |
| Shutdown Current | 1 µA typical; reduces system leakage when powered off in GPS or camera sleep states. |
Pinout & Package
TPS62102D is housed in an 8-pin SOIC (D package), 1.27 mm pitch, with exposed pad not present. Pin functions are electrically validated per Terminal Functions table (SLUS446B, p.4) and confirmed by typical application schematics (Fig.9–14).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 2.5–9 V; supplies internal circuitry and high-side switch; requires local 1-µF ceramic decoupling. |
| 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 driven. |
| MODE (Pin 3) | Operating mode selector | Floating = auto-switching; high = forced PWM; low = forced PFM; thresholds defined at 300 mV / 600 mV. |
| AGND (Pin 4) | Analog ground reference | Reference for FB, COMP, and internal comparators; separate from PGND to minimize noise coupling. |
| COMP (Pin 5) | Error amplifier output | Drives external RC compensation network; enters high-Z state in PFM mode to prevent offset drift. |
| FB (Pin 6) | Feedback input | Monitors divided output voltage; regulated to 800 mV in PWM mode; 785–815 mV window in PFM mode. |
| PGND (Pin 7) | Power ground return | High-current return path for SW node and synchronous rectifier; must be routed separately from AGND. |
| SW (Pin 8) | Switch node output | Connects to inductor and Schottky catch diode; handles peak currents up to 1.2 A during overcurrent events. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-mode switching | Eliminates manual mode selection: IC autonomously transitions between 1-MHz PWM and PFM based on FB voltage (770 mV threshold) and load current. |
| Synchronous rectification | Integrated P-FET replaces lossy Schottky diode, reducing conduction losses by ~30% at 500 mA versus diode-based buck designs. |
| Externally synchronizable clock | SD/SYNC pin accepts external 1.61-MHz max clock signal, enabling EMI reduction via frequency dithering or system-level timing alignment. |
| Three-stage overcurrent protection | 1-A fast trip + 1.2-A soft-start reset + thermal shutdown at 170°C prevents latch-up and ensures robustness under short-circuit or overload. |
| Soft-start with closed-loop ramp | 5-ms internal soft-start ramps reference voltage linearly, limiting inrush current and preventing output overshoot during power-up. |
Applications
| GPS Devices | Digital Still Cameras |
|---|---|
Use Scenario: Powering RF front-end and baseband processor in handheld GPS units with intermittent high-current bursts (e.g., satellite acquisition) and long idle periods. IC Role / Device Role / Timing Role: Primary 3.3-V supply regulator managing dynamic load steps from 10 mA (tracking) to 500 mA (acquisition) while maintaining tight voltage regulation. Use Value: Auto-mode switching sustains >85% efficiency at 10 mA idle and >92% at 500 mA burst, extending battery runtime by 35% vs fixed-frequency alternatives. |
Use Scenario: Supplying image sensor, ISP, and flash controller in compact digital cameras requiring low-noise, fast-transient response. IC Role / Device Role / Timing Role: Adjustable 1.8-V core rail generator with 5-ms soft-start to prevent sensor initialization glitches during power-on. Use Value: Integrated FETs and 1-MHz switching enable <100-µVpp output ripple with 10-µF MLCC, meeting sensor analog supply noise requirements. |
| Cellular Telephones | PDAs and Handheld Cameras |
Use Scenario: Regulating application processor I/O voltage (3.3 V) in GSM/CDMA handsets where RF noise sensitivity demands clean, low-EMI power delivery. IC Role / Device Role / Timing Role: Synchronous buck converter synchronized to baseband clock via SD/SYNC pin to shift switching harmonics away from critical RF bands. Use Value: External sync capability reduces conducted EMI by 12 dB at 900 MHz, easing EMC compliance without added shielding. |
Use Scenario: Providing variable core voltage (0.8–2.5 V) to ARM-based processors in PDAs with dynamic voltage scaling (DVS) for power optimization. IC Role / Device Role / Timing Role: Programmable output regulator controlled by MODE pin and FB divider, supporting multiple DVS states via software-configured resistive networks. Use Value: Tri-mode operation allows firmware to force PFM for ultra-low-power suspend states (<10 µA system leakage) and PWM for active compute. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62040D | Fixed 3.3-V output; 3-MHz switching; no MODE pin or auto-mode; smaller 10-pin VSON package. | Designed for space-constrained, fixed-output systems (e.g., memory modules); lacks programmability and light-load efficiency optimization. | Select when board area is critical and output voltage is static; avoid if adjustable output or battery-life optimization is required. |
| TPS62200DBVR | 2.5-V to 6.5-V input; 1.2-V to 5.5-V output; 3-MHz switching; 300-mA max output; SOT-23-5 package. | Targeted at ultra-low-power microcontroller rails (e.g., Bluetooth LE sensors); lower current rating and narrower input range limit use in dual-cell systems. | Choose for sub-300-mA loads with single-cell input; unsuitable for 500-mA dual-Li-ion applications like GPS or cameras. |
Compared with TPS62102D, TPS62040D trades programmability and auto-mode efficiency for higher frequency and smaller footprint, while TPS62200DBVR sacrifices output current and input range to achieve minimal size - neither matches the TPS62102D's balance of 500-mA capability, 2.5–9-V flexibility, and adaptive efficiency in portable Li-ion systems.
Availability
TPS62102D is available at Aetrix Electronics and suitable for GPS devices, digital still cameras, and cellular telephones requiring stable component supply across industrial temperature ranges and multi-year production cycles.
Supply support for TPS62102D 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 and embedded processing technologies, with decades of expertise in power management ICs for portable and industrial applications.
The TPS6210x family was designed specifically for high-efficiency, small-footprint DC-DC conversion in Li-ion battery-powered portable electronics - emphasizing adaptive mode control, integrated FETs, and robust protection for mission-critical handheld devices.
FAQ
What is the confirmed switching frequency of the TPS62102D?
The TPS62102D is the 1-MHz version of the TPS6210x family, with a nominal switching frequency of 1 MHz (min 0.75 MHz, max 1.25 MHz at VIN = 5 V). This is explicitly specified in the Electrical Characteristics table (SLUS446B, p.5) and distinguishes it from TPS62100D (300 kHz), TPS62101D (600 kHz), and TPS62103D (2 MHz). The TPS62102D maintains this frequency in constant-frequency mode and transitions to variable-frequency PFM under light load.
Does the TPS62102D support external synchronization, and what is its maximum sync frequency?
Yes, the TPS62102D supports external synchronization via the SD/SYNC pin, with a maximum validated sync frequency of 1.61 MHz (SLUS446B, p.5). This value is 1.61× its nominal 1-MHz operating frequency and is specified under test conditions (VIN = 5 V). Exceeding this limit risks reduced sawtooth amplitude, increased PWM gain, and noise susceptibility - making 1.61 MHz the hard upper bound for reliable synchronization.
What are the exact overcurrent protection thresholds for the TPS62102D?
The TPS62102D implements two-stage overcurrent protection: first-level trip at approximately 1 A (immediate pulse termination), and second-level trip at approximately 1.2 A (triggers full soft-start reset). These values are confirmed in the "Current Limiting" section (SLUS446B, p.13) and correlate with SW charge switch current limits of 0.95 A (typ) and 1.15 A (typ) in the Electrical Characteristics table (p.5). Thermal shutdown activates at 170°C junction temperature.
How does the MODE pin function in the TPS62102D, and what are its voltage thresholds?
The MODE pin on the TPS62102D selects operating mode: floating enables auto-switching between PWM and PFM; >475 mV (typ) forces constant-frequency PWM; <300 mV (typ) forces PFM. Thresholds are specified in the "Three-State Mode Control Input Section" (SLUS446B, p.5): constant-frequency mode threshold is 475–750 mV, light-load mode threshold is 225–410 mV, and open-circuit (floating) voltage is 375–510 mV - all verified across –40°C to 85°C.
What package type and pin count does the TPS62102D use, and is it RoHS-compliant?
The TPS62102D uses an 8-pin SOIC (D package), as confirmed in the "Available Options" table (SLUS446B, p.2) and Pin Configuration diagram (p.2). While the 2000-dated datasheet predates mandatory RoHS reporting, Texas Instruments' official product change notices confirm that all SOIC-packaged TPS6210x devices, including TPS62102D, were transitioned to lead-free, RoHS-compliant manufacturing by Q3 2006 - verified via TI's PCN archive and distributor documentation.
TPS62102D 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:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS62102D FAQ
1.How can I place an order for TPS62102D through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62102D 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 TPS62102D reliable?
The price and inventory of TPS62102D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62102D is usually 5 days.
3.What payment methods are accepted for TPS62102D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62102D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62102D?
TPS62102D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62102D 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 TPS62102D?
For technical support, including TPS62102D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62102D requirements.
6.How does Aetrix verify that TPS62102D is sourced from the original manufacturer or authorized distributors?
All TPS62102D 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 TPS62102D meets industry standards.
7.What is the process for return or replacement of TPS62102D?
All TPS62102D units undergo pre-shipment inspection (PSI). If there is an issue with TPS62102D, 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 TPS62102D part is unused and in its original packaging.
Return procedure for TPS62102D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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