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Texas Instruments TPS62100D
- Part No.:
- TPS62100D
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS62100D.pdf
- Description:
- IC REG BUCK ADJ 500MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,292
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Product details
Overview
TPS62100D 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 (300 kHz) and pulsed-variable-frequency modes for peak efficiency across load range - deployed in GPS devices and digital still cameras.
For engineers reviewing the TPS62100D datasheet, TPS62100D pinout, TPS62100D application, or TPS62100D equivalent, this page delivers verified technical context, validated pin functions, confirmed operating modes (auto/forced-PWM/forced-PFM), real-world thermal and current-limiting behavior, and precise alternative selection guidance for battery-constrained designs.
Technical Context
The TPS62100D integrates N- and P-channel MOSFETs with an error amplifier, light-load detector, and dual-function SD/SYNC pin enabling external synchronization up to 600 kHz or shutdown with >20 µs high pulse. Its tri-state MODE pin selects constant-frequency PWM, forced-variable-frequency PFM, or automatic mode transition based on FB voltage thresholds (770 mV–815 mV).
It implements closed-loop soft-start (~5 ms), 0%–100% duty cycle control, and two-stage overcurrent protection (1 A pulse termination, 1.2 A soft-start trigger), with thermal shutdown at 170°C. The COMP pin disconnects from the error amplifier in PFM mode, and FB is referenced to 800 mV in PWM mode and 785–815 mV in PFM mode.
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 regulation. |
| Output Voltage Range | 0.8 V to 8 V - adjustable via external resistor divider; FB reference is 800 mV in PWM mode, 785–815 mV in PFM mode. |
| Max Output Current | 500 mA - sustained continuous output in constant-frequency mode; limited to 100 mA in forced-PFM mode. |
| Switching Frequency | 300 kHz nominal - fixed frequency in PWM mode; synchronizable up to 600 kHz; auto-mode transitions to variable frequency at light loads. |
| Quiescent Current | 250 µA typical in burst mode - enables >100-hour standby in low-power GPS or PDA applications with minimal battery drain. |
| Shutdown Current | 1 µA typical - preserves battery shelf life during storage or system sleep states. |
| Package | 8-pin SOIC (D package) - surface-mount, industry-standard footprint compatible with automated assembly and thermal relief design. |
Pinout & Package
TPS62100D uses an 8-pin SOIC (D) package with exposed pad not present; JEDEC MS-012AC compliant. Pin functions are validated per SLUS446B Rev. December 2000, Figure D PACKAGE (TOP VIEW).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Main power input | Accepts 2.5–9 V; supplies internal circuitry and switch driver; requires local 1 µF ceramic bypass. |
| SD/SYNC (Pin 2) | Dual-function control | Drives high (>1 V, >20 µs) for shutdown; driven 0–2 V rising-edge for sync; must not float - no internal pull-down. |
| MODE (Pin 3) | Operating mode selector | High = forced PWM; low = forced PFM; open = auto-switching between modes based on FB voltage and load. |
| AGND (Pin 4) | Analog ground reference | Reference for internal reference, comparators, and error amplifier; separate from PGND to minimize noise coupling. |
| COMP (Pin 5) | Error amplifier output | Connects to FB via RC network; goes high-Z in PFM mode; sets loop dynamics and stability margin. |
| FB (Pin 6) | Feedback input | Monitors divided output; regulated to 800 mV (PWM) or 785–815 mV (PFM); triggers mode transition when <770 mV. |
| PGND (Pin 7) | Power ground return | Return path for high-current SW node and internal FETs; must be low-inductance connection to minimize EMI and voltage spikes. |
| SW (Pin 8) | Switch node output | Drives external inductor; swings from ~0 V to VIN; requires Schottky catch diode (e.g., 10BQ040) or synchronous rectifier. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-auto-mode operation | Automatically switches between constant-frequency PWM and pulsed-variable-frequency PFM to maintain >85% efficiency from 1 mA to 500 mA load. |
| Externally synchronizable clock | Accepts external clock up to 600 kHz on SD/SYNC pin - eliminates beat frequencies in multi-rail systems and simplifies EMI filtering. |
| Integrated N- and P-channel FETs | Reduces external component count; RDS(on) = 0.6 Ω (N-FET) / 1.0 Ω (P-FET) at 7.2 V - enables compact 3 mm × 3 mm PCB area for 3.3 V/500 mA output. |
| Three-level overcurrent protection | 1 A fast pulse termination + 1.2 A soft-start trigger + thermal shutdown at 170°C - prevents damage during short-circuit or overload without external sensing. |
| Closed-loop soft-start | ~5 ms ramp time with controlled reference voltage slew - limits inrush current and avoids output overshoot during power-up or wake-from-standby. |
Applications
| GPS Navigation Devices | Digital Still Cameras |
|---|---|
|
Use Scenario: Powering baseband processor and RF front-end in handheld GPS units operating from single Li-ion cell (2.5–4.2 V). IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 1.8 V/3.3 V rails with dynamic load response to burst-mode GNSS signal acquisition. Use Value: Dual-auto-mode maintains >90% efficiency during intermittent 50 mA active bursts and <10 µA quiescent draw in tracking-only mode. |
Use Scenario: Supplying image sensor, DSP, and LCD backlight drivers in compact digital cameras with dual Li-ion cells (5–8.4 V). IC Role / Device Role / Timing Role: Adjustable-output buck converter generating 2.8 V for CMOS sensor and 3.3 V for logic, synchronized to system clock to suppress switching noise in analog video path. Use Value: 300 kHz fixed-frequency operation ensures predictable EMI profile; soft-start prevents flash capacitor charging transients from disrupting sensor initialization. |
| Cellular Telephones | PDAs and Handheld Terminals |
|
Use Scenario: Regulating core voltage for baseband SoC in 2G/3G handsets powered by single Li-ion battery with wide voltage swing (4.2 → 3.0 V). IC Role / Device Role / Timing Role: Adaptive voltage regulator responding to CPU load changes; MODE pin tied to SoC GPIO to force PFM during idle and PWM during call processing. Use Value: 250 µA burst-mode IQ extends talk time by 18% vs. fixed-frequency alternatives under mixed 10–100 mA load profiles. |
Use Scenario: Power management for ARM-based PDA with multiple voltage rails (1.2 V core, 3.3 V I/O, 5 V USB) and long battery life requirement. IC Role / Device Role / Timing Role: Secondary buck stage stepping down main 3.3 V rail to 1.2 V for processor core; SD/SYNC pin synchronized to system timer to align switching edges with low-noise windows. Use Value: Synchronization reduces conducted EMI by 12 dBµV in 30–100 MHz band, easing FCC Class B compliance without added ferrite beads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62040D | Higher 3-MHz switching frequency; 2.5–6 V input; 600 mA output; no PFM mode - fixed-frequency only. | Better suited for space-constrained apps needing smaller inductors; lacks auto-mode efficiency optimization at light loads. | Select TPS62040D when board area is critical and load remains >100 mA; retain TPS62100D for battery longevity in intermittently active devices. |
| TPS62200DBVR | 2-MHz version in 5-pin SOT-23; 2.05–6.5 V input; 300 mA output; integrated compensation - no COMP pin. | Lower cost and smaller footprint but reduced current capability and no external loop tuning; no SD/SYNC sync function. | Choose TPS62200DBVR for cost-sensitive, low-power sensor nodes; use TPS62100D where programmable mode control, 500 mA drive, and sync capability are required. |
Compared with TPS62040D and TPS62200DBVR, the TPS62100D uniquely balances wide-input flexibility (2.5–9 V), auto-mode efficiency across 1 mA–500 mA, and dual-function SD/SYNC control - making it optimal for legacy portable designs requiring field-proven reliability and direct drop-in replacement in existing SOIC layouts.
Availability
TPS62100D is available at Aetrix Electronics and suitable for GPS navigation devices, digital still cameras, cellular telephones, PDAs, and handheld terminals requiring stable component supply with long-term industrial availability.
Supply support for TPS62100D 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 ICs, with decades of expertise in battery-efficient power conversion for portable electronics.
The TPS6210x family was designed specifically for Li-ion-powered portable equipment requiring high light-load efficiency, flexible mode control, and robust protection - targeting cellular, GPS, and imaging applications where battery runtime and thermal performance are critical.
FAQ
What is the maximum input voltage rating for the TPS62100D?
The TPS62100D has an absolute maximum input voltage rating of 10 V on the VIN pin, but its recommended operating range is 2.5 V to 9 V. Exceeding 9 V may compromise long-term reliability or violate safe operating area limits, especially under high ambient temperature conditions. Always observe derating guidelines in SLUS446B Section 3.
Does the TPS62100D support external clock synchronization?
Yes, the TPS62100D supports external synchronization via the SD/SYNC pin. When driven with a clean 0–2 V square wave, it locks to the rising edge of the input signal up to 600 kHz. Synchronizing above 600 kHz is not recommended, as it reduces sawtooth amplitude and increases PWM gain sensitivity to noise.
How does the MODE pin affect operation of the TPS62100D?
The MODE pin configures three distinct operating modes: pulled high → forced constant-frequency PWM; pulled low → forced pulsed-variable-frequency (PFM); left open → automatic mode that transitions between PWM and PFM based on FB voltage and load current. Open-circuit voltage is 375–510 mV, defining the floating threshold.
What protection features are built into the TPS62100D?
The TPS62100D includes three layers of protection: (1) two-stage overcurrent detection (1 A fast termination, 1.2 A soft-start trigger), (2) thermal shutdown at 170°C junction temperature, and (3) input undervoltage lockout implicitly enforced by minimum 2.5 V start-up requirement. No external components are needed to enable these functions.
Can the TPS62100D operate from a single Li-ion cell?
Yes, the TPS62100D is explicitly designed for single Li-ion cell operation (2.5 V–4.2 V) and dual-cell configurations (5 V–8.4 V). Its 2.5 V minimum input allows regulation down to end-of-discharge, and its auto-mode maintains high efficiency even at 1–10 mA loads typical of GPS standby or PDA sleep states.
TPS62100D 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:
- 300kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS62100D FAQ
1.How can I place an order for TPS62100D through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62100D 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 TPS62100D reliable?
The price and inventory of TPS62100D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62100D is usually 5 days.
3.What payment methods are accepted for TPS62100D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62100D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62100D?
TPS62100D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62100D 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 TPS62100D?
For technical support, including TPS62100D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62100D requirements.
6.How does Aetrix verify that TPS62100D is sourced from the original manufacturer or authorized distributors?
All TPS62100D 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 TPS62100D meets industry standards.
7.What is the process for return or replacement of TPS62100D?
All TPS62100D units undergo pre-shipment inspection (PSI). If there is an issue with TPS62100D, 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 TPS62100D part is unused and in its original packaging.
Return procedure for TPS62100D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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