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Texas Instruments TPS60302DGSR
- Part No.:
- TPS60302DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS60302DGSR.pdf
- Description:
- IC REG CHARGE PUMP 2VIN 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,986
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Product details
Overview
TPS60302DGSR from Texas Instruments is a dual-output, regulated charge pump DC-DC converter designed for ultra-low-voltage battery-powered systems. It accepts 0.9 V–1.8 V input (single alkaline/NiMH/NiCd), delivers regulated 3.3 V @ 20 mA on OUT2 and 2×VIN @ 40 mA on OUT1, and features push-pull power-good (PG) output with 98% trip threshold - enabling reliable power sequencing in hearing aids and portable medical instruments.
For engineers reviewing the TPS60302DGSR datasheet, TPS60302DGSR pinout, TPS60302DGSR application, or TPS60302DGSR equivalent, this page provides verified functional modes, LinSkip switching behavior, thermal resistance (RθJA = 156.1°C/W), shutdown isolation, and exact capacitor requirements (five 1-µF ceramics) to support low-noise, space-constrained designs.
Technical Context
The TPS60302DGSR implements a two-stage switched-capacitor architecture: first stage doubles VIN to generate OUT1; second stage quadruples VIN to regulate OUT2 at 3.3 V ±4%. It automatically selects between 3× or 4× conversion modes based on input voltage to maintain regulation across 0.9 V–1.8 V.
It operates in LinSkip mode - seamlessly transitioning from pulse-skipping (low IQ) at light loads to constant-frequency linear regulation above 7.5 mA, reducing output ripple while sustaining up to 90% peak efficiency. The push-pull PG output drives up to 5 mA without external pull-up and supports RC filtering via R(PG,1) = 15 Ω.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.9 V to 1.8 V - supports single-cell alkaline, NiMH, or NiCd batteries without brownout risk down to 0.9 V. |
| OUT2 Output Voltage | 3.3 V ±4% - tightly regulated rail for MCU cores or analog sensors requiring stable 3.3-V supply. |
| Max Output Current | 20 mA on OUT2, 40 mA on OUT1 - enables simultaneous dual-rail operation with total load ≤40 mA on first stage. |
| Quiescent Current | <35 µA - extends battery life in always-on portable devices like smart card readers and pagers. |
| Switching Frequency | 470–900 kHz - high-frequency operation allows use of small 1-µF ceramic flying capacitors; no inductors required. |
| Power-Good Output | Push-pull, active-high at 98% of nominal OUT2 - provides deterministic power-up sequencing without external biasing. |
| Shutdown Current | 0.05 µA - isolates load from battery during sleep, preserving shelf life in intermittently powered instruments. |
| Package | 10-pin VSSOP (3.05 mm × 4.98 mm) - micro-small footprint optimized for hearing aids and compact wearables. |
Pinout & Package
TPS60302DGSR is housed in a 10-pin VSSOP (DGS) package measuring 3.05 mm × 4.98 mm with exposed pad for thermal performance. Pin functions are validated per TI SLVS302B Rev B datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high logic control; pulls device into 0.05-µA shutdown when low, isolating OUT1/OUT2 from VIN. |
| VIN | Supply input | 0.9–1.8 V battery connection; requires ≥1-µF bypass capacitor to GND for stability and EMI reduction. |
| C1+, C1− | Flying capacitor terminals (stage 1) | Interface with 1-µF ceramic C1F to implement voltage-doubling for OUT1 generation. |
| OUT1 | Unregulated 2×VIN output | Delivers up to 40 mA; used for auxiliary rails or as input to LDOs; bypassed with 1-µF ceramic to GND. |
| OUT2 | Regulated 3.3-V output | Main system rail; delivers up to 20 mA with ±4% accuracy; bypassed with 1-µF ceramic to GND. |
| PG | Power-good output | Push-pull active-high signal indicating OUT2 is within 98% of regulation; sinks 1.6 mA, sources 5 mA. |
| C2+, C2− | Flying capacitor terminals (stage 2) | Interface with 1-µF ceramic C2F to implement regulated 4× charge pump for OUT2. |
| GND | Ground reference | Common return path for all internal circuits and external capacitors; must be low-impedance plane. |
Key Features
| Feature | Design Value |
|---|---|
| LinSkip operating mode | Automatic transition from pulse-skipping (≤7.5 mA) to constant-frequency linear regulation (>7.5 mA), minimizing ripple without external compensation. |
| No-inductor architecture | Relies solely on five 1-µF ceramic capacitors - eliminates magnetic EMI, reduces board area, and lowers BOM cost vs inductor-based converters. |
| Load isolation in shutdown | Internal switches disconnect OUT1/OUT2 from VIN during EN = low, limiting battery drain to 0.05 µA and preventing reverse current leakage. |
| Integrated power-good supervisor | Push-pull PG output eliminates need for external pull-up resistor and enables direct interfacing with MCU reset or enable inputs. |
| Wide input voltage tolerance | Stable operation from 0.9 V ensures full utilization of alkaline battery discharge curve (down to end-of-life ~0.9 V). |
| Thermal performance | RθJA = 156.1°C/W enables 46 mW max dissipation with only 10°C junction rise on typical PCB - suitable for sealed enclosures. |
Applications
| Hearing Instruments | Portable Smart Card Readers |
|---|---|
|
Use Scenario: Miniature in-ear hearing aids powered by zinc-air or button-cell batteries with strict size and quiescent current constraints. IC Role / Device Role / Timing Role: Dual-rail power manager generating clean 3.3-V digital core supply and 2×VIN analog bias rail from single 1.2-V cell. Use Value: 35-µA quiescent current and 0.9-V start-up extend usable battery life beyond 100 hours; push-pull PG enables precise MCU wake-up timing. |
Use Scenario: Handheld EMV-compliant payment terminals using AA/AAA alkaline batteries in retail or field service environments. IC Role / Device Role / Timing Role: Primary DC-DC converter supplying regulated 3.3-V rail to secure element and contactless RF interface, with OUT1 powering LED indicators. Use Value: 90% peak efficiency and 20-mA OUT2 current sustain full-speed NFC transactions; VSSOP package fits <8-mm-thick industrial housings. |
| Metering Applications with MSP430 | Home-Automation Sensors |
|
Use Scenario: Battery-operated utility meters (gas/water/electric) using TI MSP430 microcontrollers with integrated ADCs and LCD drivers. IC Role / Device Role / Timing Role: Power source for MSP430 VCC and analog front-end; PG output triggers ADC sampling upon stable 3.3-V rail establishment. Use Value: LinSkip mode suppresses switching noise during ADC conversions; 400-µs start-up time ensures rapid wake-from-sleep response. |
Use Scenario: Zigbee/Z-Wave wireless temperature/humidity sensors deployed in HVAC ducts or wall-mounted enclosures with 10-year battery life targets. IC Role / Device Role / Timing Role: Low-noise 3.3-V supply for RF transceiver and sensor interface ICs; shutdown mode activated between periodic BLE advertisements. Use Value: 0.05-µA shutdown current prevents parasitic drain; 3.05 mm × 4.98 mm VSSOP footprint enables PCB area savings >30% vs SOIC alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60300DGSR | Open-drain PG output; same 3.3-V OUT2, but requires external 100-kΩ–1-MΩ pull-up resistor to OUT1/OUT2. | Suitable where MCU GPIO has internal pull-up or system-level sequencing uses open-drain wired-OR logic. | Select TPS60300DGSR only if existing design already uses open-drain PG interface; otherwise prefer TPS60302DGSR for simplified layout. |
| TPS60303DGSR | Identical pinout and package, but delivers regulated 3-V (±4%) on OUT2 instead of 3.3 V; same 40-mA OUT1 capability. | Preferred for legacy 3-V logic systems or mixed-voltage domains requiring 3-V I/O rails alongside 2×VIN analog supplies. | Choose TPS60303DGSR when interfacing with 3-V MCUs or peripherals; verify 3-V tolerance of downstream components before substitution. |
Compared with TPS60300DGSR and TPS60303DGSR, the TPS60302DGSR uniquely combines push-pull PG functionality with 3.3-V regulation - eliminating external biasing components and simplifying power sequencing in new 3.3-V embedded designs.
Availability
TPS60302DGSR is available at Aetrix Electronics and suitable for hearing instruments, portable smart card readers, and MSP430-based metering applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS60302DGSR 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for battery-constrained applications.
The TPS6030x family was engineered specifically for space-critical, single-cell battery systems - delivering dual regulated outputs with minimal external components and ultra-low quiescent current for hearing aids, portable medical devices, and ultra-compact consumer electronics.
FAQ
What is the minimum input voltage required for TPS60302DGSR to regulate 3.3 V on OUT2?
The TPS60302DGSR maintains regulated 3.3 V on OUT2 down to 0.9 V input under light load (≤10 mA). At 20 mA load, minimum VIN rises to 1.1 V per datasheet Figure 20. This enables full utilization of alkaline battery discharge curves, supporting operation until end-of-life voltage (~0.9 V).
Does TPS60302DGSR require external compensation components?
No, the TPS60302DGSR is fully internally compensated. Its LinSkip architecture and fixed-frequency charge pump design eliminate the need for external resistors, capacitors, or loop compensation networks - only five 1-µF ceramic capacitors are required for complete operation.
Can both OUT1 and OUT2 be loaded simultaneously on TPS60302DGSR?
Yes, but total current drawn from the first charge pump stage (feeding OUT1) must not exceed 40 mA. For example, loading OUT1 at 20 mA and OUT2 at 10 mA is valid; however, OUT1 = 30 mA + OUT2 = 15 mA violates the 40-mA stage limit and may cause regulation loss on OUT2.
How does the push-pull power-good output on TPS60302DGSR differ from open-drain alternatives?
The TPS60302DGSR's push-pull PG actively drives high (≥2.7 V) and low (≤0.3 V) without external pull-up resistors - simplifying interface with 3.3-V logic inputs and enabling direct connection to MCU reset pins. Open-drain variants (e.g., TPS60300DGSR) require external biasing and add routing complexity.
What thermal derating applies to TPS60302DGSR at 125°C ambient?
The TPS60302DGSR has a maximum junction temperature of 125°C and RθJA = 156.1°C/W. At 125°C ambient, no power dissipation is allowable - meaning the device must operate below ambient (e.g., in cooled enclosures) or with reduced load to maintain TJ ≤ 125°C. Derating begins immediately above 115°C ambient per thermal calculations in datasheet Section 12.3.
TPS60302DGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Ratiometric, Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 0.9V
- Voltage - Input (Max):
- 1.8V
- Voltage - Output (Min/Fixed):
- 2Vin, 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 40mA, 20mA
- Frequency - Switching:
- 700kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS60302DGSR FAQ
1.How can I place an order for TPS60302DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60302DGSR 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 TPS60302DGSR reliable?
The price and inventory of TPS60302DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60302DGSR is usually 5 days.
3.What payment methods are accepted for TPS60302DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60302DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60302DGSR?
TPS60302DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60302DGSR 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 TPS60302DGSR?
For technical support, including TPS60302DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60302DGSR requirements.
6.How does Aetrix verify that TPS60302DGSR is sourced from the original manufacturer or authorized distributors?
All TPS60302DGSR 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 TPS60302DGSR meets industry standards.
7.What is the process for return or replacement of TPS60302DGSR?
All TPS60302DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS60302DGSR, 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 TPS60302DGSR part is unused and in its original packaging.
Return procedure for TPS60302DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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