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Texas Instruments TPS60502DGS
- Part No.:
- TPS60502DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS60502DGS.pdf
- Description:
- IC REG CHARGE PUMP 1.8V 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:162
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Product details
Overview
TPS60502DGS from Texas Instruments is a fixed-output 1.8-V, high-efficiency step-down charge pump DC-DC converter optimized for space-constrained battery-powered systems. It delivers up to 250 mA output current with ≤3% output voltage tolerance over line, load, and temperature, operates from 1.8 V to 6.5 V input, and integrates power-good supervision and thermal/overcurrent protection. It is used in portable instrumentation requiring stable low-voltage rail generation from single Li-ion cells.
For engineers reviewing the TPS60502DGS datasheet, TPS60502DGS pinout, TPS60502DGS application, or TPS60502DGS equivalent, key selection criteria include minimum input voltage (≥2.8 V at 150 mA), 10-pin VSSOP package footprint, skip-mode vs linear-mode conversion behavior, and compatibility with 1-µF flying capacitors and 10-µF output capacitor.
Technical Context
The TPS60502DGS implements fractional switched-capacitor conversion with automatic mode selection among LDO (1×), 2/3×, 0.5×, and 1/3× topologies based on VIN/VOUT ratio and load current. Regulation is achieved via internal error amplifier feedback to FB pin-directly tied to OUT for fixed 1.8-V operation-and skip-mode control below 150 mA.
It features an open-drain PG output that asserts high when OUT reaches ≥97% of 1.8 V (i.e., ≥1.746 V), internal soft-start (80 µs no-load start-up), and shutdown isolation: EN = high disables all circuitry, reducing input current to 0.05 µA and disconnecting load from input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% over line, load, and temperature - ensures stable core supply for low-power microcontrollers and sensors. |
| Input Voltage Range | 1.8 V to 6.5 V - supports direct connection to single-cell Li-ion (2.7–4.2 V) or dual-cell alkaline/NiMH (2.4–3.6 V). |
| Max Output Current | 250 mA - sufficient for powering DSP cores, RF transceivers, or multi-rail PMICs in portable audio devices. |
| Efficiency | Up to 90% - achieved via adaptive fractional conversion modes; >80% typical at 150 mA with VIN = 3.3 V. |
| Quiescent Current | <40 µA - enables ultra-low standby power in always-on sensor nodes and wearables. |
| Switching Frequency | 600–1200 kHz - allows use of small 1-µF ceramic flying capacitors and minimizes EMI filtering requirements. |
| Power Good Threshold | 97% of nominal (1.746 V) - provides reliable system reset signaling without external monitoring circuitry. |
Pinout & Package
TPS60502DGS is housed in a 10-pin VSSOP package (3.05 mm × 4.98 mm), thermally enhanced for high-current operation in compact layouts. Pin functions are validated per TI SLVS391C Rev C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-low logic control: pull low to enable converter; high state isolates load and reduces input current to 0.05 µA. |
| PG (Pin 2) | Open-drain power-good output | Asserts high when OUT ≥1.746 V; requires external pull-up to VIN or OUT for system reset sequencing. |
| C2F− (Pin 3) | Flying capacitor C2 negative terminal | Connects to negative side of second 1-µF ceramic flying capacitor; critical for 0.5× and 1/3× mode operation. |
| C2F+ (Pin 4) | Flying capacitor C2 positive terminal | Connects to positive side of second 1-µF ceramic flying capacitor; forms charge-transfer path with C1F. |
| VIN (Pin 5) | Main input supply | Accepts 1.8–6.5 V; requires 2.2-µF ceramic input capacitor (CIN) for stability and ripple reduction. |
| C1F+ (Pin 6) | Flying capacitor C1 positive terminal | Connects to positive side of first 1-µF ceramic flying capacitor; essential for all fractional conversion stages. |
| OUT (Pin 7) | Regulated 1.8-V output | Delivers up to 250 mA; bypassed with ≥10-µF ceramic capacitor (Co) for <30 mVPP ripple at 150 mA. |
| C1F− (Pin 8) | Flying capacitor C1 negative terminal | Connects to negative side of first 1-µF ceramic flying capacitor; completes charge-pump switching loop. |
| GND (Pin 9) | Ground reference | Common return for input, output, and internal circuits; must be low-impedance plane for thermal and noise performance. |
| FB (Pin 10) | Feedback input | Internally connected to OUT for fixed 1.8-V version; not configurable - eliminates external resistor divider. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive fractional conversion | Automatically selects LDO, 2/3×, 0.5×, or 1/3× mode to maintain >80% efficiency across 1.8–6.5 V input range. |
| Integrated power-good supervisor | Open-drain PG pin asserts high at ≥1.746 V with 100–200 µs delay, enabling reliable processor reset without external comparators. |
| Thermal and overcurrent protection | Shuts down at 150°C junction temperature; limits short-circuit current to 300 mA typical during startup or fault conditions. |
| Load isolation in shutdown | EN = high disconnects OUT from VIN, limiting leakage to ≤1 µA - extends battery shelf life in storage mode. |
| Ultra-low quiescent current | ≤40 µA no-load input current enables multi-year operation in coin-cell–powered IoT endpoints. |
Applications
| Portable Medical Sensors | USB-Powered Test Equipment |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) using ultra-low-power MCU and analog front-end powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Generates regulated 1.8-V rail for MCU core and ADC reference from declining 2.0–3.0 V battery voltage. Use Value: Maintains 1.8 V ±3% across battery discharge curve while drawing only 40 µA quiescent current, extending runtime beyond 12 months. |
Use Scenario: Handheld oscilloscope module drawing power exclusively from USB 5-V port. IC Role / Device Role / Timing Role: Steps down 5 V to precise 1.8 V for FPGA I/O banks and precision DACs, rejecting USB line noise. Use Value: Achieves 87% efficiency at 150 mA with <30 mVPP ripple, eliminating need for secondary LDO and saving PCB area. |
| Bluetooth Audio Transceivers | Industrial Handheld Scanners |
Use Scenario: True wireless stereo (TWS) earbud with Bluetooth SoC requiring clean 1.8-V supply from 3.7-V Li-ion cell. IC Role / Device Role / Timing Role: Provides low-noise 1.8-V rail with fast load transient response (<10 µs recovery) during RF transmit bursts. Use Value: Delivers 250 mA peak current with 100 mA/division load steps and 50 mV/division ripple suppression per Figure 28. |
Use Scenario: Rugged barcode scanner operating in cold warehouses (−40°C) with wide-input industrial power rail. IC Role / Device Role / Timing Role: Generates 1.8-V logic supply from unregulated 3.0–6.0 V input, surviving cold-start and brownout events. Use Value: Guaranteed operation down to −40°C with 150 mA load at VIN = 2.8 V (per Figure 11), plus PG signal for firmware-safe boot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60503DGS | Fixed 1.5-V output; minimum input voltage 2.5 V at 150 mA (vs. 2.8 V for TPS60502DGS). | Suitable for lower-core-voltage MCUs (e.g., ARM Cortex-M0+) where 1.5 V suffices and input headroom is tighter. | Select when system requires 1.5 V instead of 1.8 V and can tolerate slightly higher dropout at light loads. |
| MAX17222ETA+ | Inductor-based buck converter; 1.8-V fixed output; 400-kHz switching; requires external inductor and diode. | Better PSRR and lower EMI than charge pump; higher solution size but superior light-load efficiency below 10 mA. | Choose for noise-sensitive analog circuits where inductor size is acceptable and EMI compliance is critical. |
Compared with TPS60503DGS, the TPS60502DGS offers higher output voltage for legacy 1.8-V logic families; compared with MAX17222ETA+, it eliminates magnetic components and simplifies layout but trades off EMI performance and sub-10-mA efficiency.
Availability
TPS60502DGS is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered test equipment, Bluetooth audio transceivers, and industrial handheld scanners requiring stable component supply and long-term manufacturability.
Supply support for TPS60502DGS 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 battery-operated and industrial systems.
The TPS6050x product line was designed specifically for space-critical, low-power portable applications requiring high-efficiency, capacitor-only DC-DC conversion without inductors - targeting mobile phones, internet audio players, and PC peripherals.
FAQ
What is the minimum input voltage required for TPS60502DGS to deliver 150 mA?
The TPS60502DGS requires a minimum input voltage of 2.8 V to sustain 150 mA output current, as specified in the Device Comparison Table of SLVS391C. This value accounts for internal voltage drops across MOSFET switches and regulation margin under worst-case temperature and process variation. Operating below 2.8 V at 150 mA may cause output droop or PG deassertion.
Can TPS60502DGS be used with input voltages below 1.8 V?
No, the TPS60502DGS has an absolute minimum input voltage rating of 1.8 V per Section 7.3 Recommended Operating Conditions. Supplying less than 1.8 V risks failure to start up or erratic regulation, as the internal bandgap reference and oscillator cannot operate reliably below this threshold. For sub-1.8-V inputs, consider alternative architectures like boost-charge pumps or specialized ultra-low-VIN LDOs.
Does TPS60502DGS require external feedback resistors?
No, the TPS60502DGS is the fixed 1.8-V variant and internally connects the FB pin directly to the OUT node. Unlike the adjustable TPS60500DGS, it does not require external resistor dividers. Connecting external resistors to FB will disrupt regulation and is not supported. The FB pin should remain connected only to OUT as shown in the Typical Application Schematic.
How does the power-good (PG) output behave during startup and shutdown of TPS60502DGS?
During startup, PG remains low until OUT reaches ≥1.746 V (97% of 1.8 V), then transitions high after 100–200 µs delay. During shutdown (EN = high), PG is actively pulled low. In normal operation, PG is an open-drain output requiring an external pull-up resistor (typically to VIN or OUT) to generate a valid logic-high signal for system reset controllers.
What ceramic capacitor values are recommended for TPS60502DGS at 250 mA output?
For 250 mA output, TI recommends CIN = 4.7 µF, C1F = C2F = 1 µF (X5R/X7R ceramic, 0805 or larger), and COUT = 22 µF (e.g., two parallel 10-µF 0805 ceramics). These values ensure stable regulation, <30 mVPP ripple, and avoidance of linear-mode dominance above 150 mA. Using smaller COUT (e.g., 10 µF) limits max continuous current to 150 mA per Section 9.2.1.1.
TPS60502DGS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 250mA
- Frequency - Switching:
- 800kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS60502DGS FAQ
1.How can I place an order for TPS60502DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60502DGS 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 TPS60502DGS reliable?
The price and inventory of TPS60502DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60502DGS is usually 5 days.
3.What payment methods are accepted for TPS60502DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60502DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60502DGS?
TPS60502DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60502DGS 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 TPS60502DGS?
For technical support, including TPS60502DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60502DGS requirements.
6.How does Aetrix verify that TPS60502DGS is sourced from the original manufacturer or authorized distributors?
All TPS60502DGS 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 TPS60502DGS meets industry standards.
7.What is the process for return or replacement of TPS60502DGS?
All TPS60502DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS60502DGS, 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 TPS60502DGS part is unused and in its original packaging.
Return procedure for TPS60502DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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