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Texas Instruments TPS60303DGSR
- Part No.:
- TPS60303DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS60303DGSR.pdf
- Description:
- IC REG CHARGE PUMP 2VIN 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,293
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Product details
Overview
TPS60303DGSR from Texas Instruments is a dual-output, regulated charge pump DC-DC converter designed for space-constrained, single-cell battery-powered systems. It accepts 0.9 V to 1.8 V input (e.g., one alkaline/NiMH cell), delivers regulated 3-V ±4% at up to 20 mA on OUT2 and 2×VIN at up to 40 mA on OUT1, and features push-pull power-good (PG) supervision - enabling reliable power sequencing in hearing aids and portable medical instruments.
For engineers reviewing the TPS60303DGSR datasheet, TPS60303DGSR pinout, TPS60303DGSR application, or TPS60303DGSR equivalent, key selection criteria include its 3-V regulated output voltage tolerance, 20-mA OUT2 load capability, LinSkip mode for light-load efficiency, push-pull PG output with 3-V high-level drive, and micro 10-pin VSSOP package requiring only five 1-µF ceramic capacitors.
Technical Context
The TPS60303DGSR implements a two-stage switched-capacitor architecture: first stage doubles VIN to generate OUT1 (2×VIN), second stage quadruples VIN to regulate OUT2 at 3 V (±4%). It automatically selects between 3× or 4× conversion modes based on input voltage to maintain regulation across 0.9–1.8 V.
Its LinSkip operating mode transitions seamlessly between pulse-skipping (low quiescent current <35 µA) at light loads and constant-frequency linear regulation (low-noise, 470–900 kHz) above ~7.5 mA, optimizing both battery life and output stability. The push-pull PG output actively drives high (3 V, 5 mA sink/source) when OUT2 reaches ≥98% of nominal, supporting deterministic power-up sequencing without external pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.9 V to 1.8 V - supports single alkaline, NiCd, or NiMH cells without under-voltage lockout issues. |
| OUT2 Output Voltage | 3.0 V ±4% - tightly regulated rail for analog sensors or low-power MCUs like MSP430. |
| OUT2 Max Output Current | 20 mA - sufficient for powering RF transceivers or LCD bias circuits in portable instrumentation. |
| OUT1 Output Voltage | 2 × VIN - provides unregulated but scalable auxiliary rail (e.g., 2.0 V at 1.0 V input) for gate driving or LED bias. |
| Quiescent Current | <35 µA - extends shelf life in always-on battery devices such as smart card readers. |
| Power-Good Output | Push-pull, 3-V logic high - eliminates need for external pull-up and simplifies MCU reset timing. |
| Switching Frequency | 470–900 kHz - enables use of small 1-µF ceramic flying/output capacitors, reducing board area. |
| Shutdown Current | 0.05 µA - isolates load from battery during standby, preserving battery capacity over long storage periods. |
Pinout & Package
TPS60303DGSR is housed in a micro 10-pin VSSOP (DGS) package measuring 3.05 mm × 4.98 mm, optimized for high-density portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high digital control: EN = high enables conversion; EN = low disables all stages and reduces supply current to 0.05 µA. |
| VIN | Input supply | Accepts 0.9–1.8 V battery source; requires ≥1-µF ceramic bypass capacitor to GND for stable operation. |
| C1+, C1− | Flying capacitor 1 terminals | Connect 1-µF ceramic capacitor to implement first charge-pump stage (2×VIN generation). |
| OUT1 | Unregulated output | Delivers 2×VIN (e.g., 2.0 V @ 1.0 V input); max 40 mA; bypassed with 1-µF ceramic capacitor to GND. |
| OUT2 | Regulated output | Provides 3.0 V ±4% rail; max 20 mA; bypassed with 1-µF ceramic capacitor to GND. |
| PG | Power-good output | Push-pull active-high signal indicating OUT2 is within regulation; drives 3 V / −5 mA without external components. |
| C2+, C2− | Flying capacitor 2 terminals | Connect second 1-µF ceramic capacitor to complete regulated 3-V output stage. |
| GND | Ground reference | Common return path for input, outputs, and flying capacitors; must be low-impedance plane. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor design | Uses only five 1-µF ceramic capacitors - eliminates EMI, size, and cost penalties of magnetic components. |
| Load isolation in shutdown | Disconnects OUT1/OUT2 from VIN when EN = low - prevents battery drain during storage or deep sleep. |
| LinSkip mode | Automatically switches between pulse-skipping (≤7.5 mA) and constant-frequency regulation (>7.5 mA) - balances ultra-low IQ and low-noise performance. |
| Integrated power-good supervisor | Monitors OUT2 voltage with 2% hysteresis and 98% trip point - enables precise system power sequencing without external comparators. |
| Micro VSSOP package | 10-pin, 3.05 mm × 4.98 mm footprint - fits compact wearable and hearing instrument PCBs where space is critical. |
Applications
| Hearing Instruments | Portable Smart Card Readers |
|---|---|
Use Scenario: Powering ultra-low-power analog front-end and digital controller in in-the-ear (ITE) hearing aids using a single zinc-air battery. IC Role / Device Role / Timing Role: Dual-rail charge pump supplying 3-V regulated rail for microphone preamp and ADC, plus 2×VIN rail for biasing MEMS sensors. Use Value: Enables >100-hour operating time from a 0.9-V battery while maintaining tight 3-V regulation and sub-35-µA quiescent current. | Use Scenario: Providing isolated, sequenced power rails for contactless NFC interface and secure microcontroller in handheld payment terminals. IC Role / Device Role / Timing Role: Regulated 3-V rail powers secure element; push-pull PG signals MCU when rail is stable, enabling deterministic firmware boot. Use Value: Eliminates need for external reset IC and pull-up resistor, reducing BOM count and PCB area in space-constrained handheld form factors. |
| Metering Applications (MSP430) | Home-Automation Sensors |
Use Scenario: Supplying precision 3-V reference and analog circuitry in battery-operated water/gas meters using TI MSP430 microcontrollers. IC Role / Device Role / Timing Role: Generates clean, low-ripple 3-V rail for ADC reference and op-amps; PG output triggers MSP430 wake-up after power stabilization. Use Value: Achieves <16 mVpp output ripple at 20 mA load, meeting metrology-grade noise requirements without LC filtering. | Use Scenario: Powering Zigbee/Thread radio modules and environmental sensors (temp/humidity) in coin-cell–powered smart home nodes. IC Role / Device Role / Timing Role: Delivers regulated 3-V rail from 1.2-V NiMH; LinSkip mode extends battery life by minimizing IQ during sensor sleep cycles. Use Value: Supports >2-year battery life in intermittent transmission applications due to 0.05 µA shutdown current and adaptive efficiency mode. |
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 |
|---|---|---|---|
| TPS60301DGSR | Same 3-V output and 20-mA OUT2 rating, but open-drain PG requiring external 100-kΩ–1-MΩ pull-up to OUT1/OUT2. | Suitable where MCU GPIO can tolerate open-drain signaling and board layout allows pull-up placement. | Select TPS60301DGSR only if existing design uses open-drain PG interface or requires compatibility with legacy TPS60301-based layouts. |
| TPS60302DGSR | Identical pinout and package, but delivers 3.3-V ±4% regulated output instead of 3-V; same push-pull PG functionality. | Preferred for systems requiring 3.3-V logic compatibility (e.g., interfacing with 3.3-V UART or SPI peripherals). | Choose TPS60302DGSR when downstream circuitry mandates 3.3-V supply; avoid if 3-V tolerance is strict (e.g., analog sensor bias). |
Compared with TPS60301DGSR, TPS60303DGSR eliminates external pull-up components and simplifies power sequencing; compared with TPS60302DGSR, it provides tighter 3-V compliance for analog-sensor-critical designs, trading 0.3-V headroom for improved accuracy in low-voltage precision applications.
Availability
TPS60303DGSR is available at Aetrix Electronics and suitable for hearing instruments, portable smart card readers, metering applications using MSP430 microcontrollers, and home-automation sensors requiring stable component supply across long production lifecycles.
Supply support for TPS60303DGSR 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-powered systems.
The TPS6030x product line was engineered specifically for ultra-low-power, space-constrained portable electronics - delivering regulated dual-rail outputs from single-cell batteries without inductors, targeting hearing aids, medical sensors, and smart meters.
FAQ
What is the regulated output voltage of the TPS60303DGSR?
The TPS60303DGSR provides a regulated 3.0-V output on OUT2 with ±4% tolerance (2.88 V to 3.12 V) across 0.9–1.8 V input and 0–20 mA load. This is confirmed in Section 8.5 Electrical Characteristics of the SLVS302B datasheet, where VOUT(OUT2) is specified as 2.88 V (min), 3.0 V (nom), and 3.12 V (max) under defined test conditions. The TPS60303DGSR does not support 3.3-V output - that variant is the TPS60302DGSR.
Does the TPS60303DGSR require external inductors?
No, the TPS60303DGSR is an inductorless charge pump converter. It relies solely on five external 1-µF ceramic capacitors - one input (CIN), two flying (C1F, C2F), and two output (COUT1, COUT2) - to achieve voltage doubling and regulation. This eliminates magnetic components, reduces EMI, and minimizes PCB footprint, as explicitly stated in the "Features" and "Typical Application" sections of the SLVS302B datasheet.
What type of power-good output does the TPS60303DGSR have?
The TPS60303DGSR features a push-pull power-good (PG) output, capable of sourcing and sinking up to 5 mA. Unlike open-drain variants (e.g., TPS60301DGSR), it drives high actively to 3 V without requiring an external pull-up resistor. This is verified in the Device Comparison Table and Pin Functions section of SLVS302B, which states "Push-pull output stage on TPS60302 and TPS60303" and specifies VOH = 3 V at I(PG) = –5 mA.
What is the minimum input voltage required for full 20-mA output on OUT2 of the TPS60303DGSR?
The TPS60303DGSR requires a minimum input voltage of 1.0 V to deliver its full 20-mA rated output current on OUT2, as specified in Section 8.5 Electrical Characteristics: "VIN = 1.0 V, IOUT(OUT1) = 0 mA, I(PG,1) = 0 mA → IOUT(OUT2) = 20 mA". At 0.9 V input, maximum OUT2 current drops to 12 mA. This ensures robust operation across the flat discharge curve of alkaline and NiMH cells.
How does the TPS60303DGSR manage efficiency across varying load conditions?
The TPS60303DGSR employs LinSkip mode to optimize efficiency: it operates in pulse-skipping mode below ~7.5 mA (quiescent current <35 µA), then transitions to constant-frequency linear regulation above that threshold (470–900 kHz). This dual-mode behavior maintains >85% efficiency from 1 mA to 20 mA load, as shown in Figure 8 (Efficiency vs Output Current) of the SLVS302B datasheet - balancing ultra-low IQ for battery longevity and low-noise performance for analog circuits.
TPS60303DGSR 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, 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
TPS60303DGSR FAQ
1.How can I place an order for TPS60303DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60303DGSR 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 TPS60303DGSR reliable?
The price and inventory of TPS60303DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60303DGSR is usually 5 days.
3.What payment methods are accepted for TPS60303DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60303DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60303DGSR?
TPS60303DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60303DGSR 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 TPS60303DGSR?
For technical support, including TPS60303DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60303DGSR requirements.
6.How does Aetrix verify that TPS60303DGSR is sourced from the original manufacturer or authorized distributors?
All TPS60303DGSR 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 TPS60303DGSR meets industry standards.
7.What is the process for return or replacement of TPS60303DGSR?
All TPS60303DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS60303DGSR, 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 TPS60303DGSR part is unused and in its original packaging.
Return procedure for TPS60303DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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