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Texas Instruments TPS60312DGSR
- Part No.:
- TPS60312DGSR
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS60312DGSR.pdf
- Description:
- IC REG CHARGE PUMP 2VIN 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,632
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Product details
Overview
TPS60312DGSR from Texas Instruments is a dual-output, regulated charge pump DC/DC converter delivering 3.3 V ±4% at up to 20 mA (OUT2) and 2×VIN at up to 40 mA (OUT1) from a single 0.9–1.8 V alkaline/NiMH/NiCd cell. It features push-pull power-good output, snooze mode (2 µA quiescent current), and operates with only five 1-µF ceramic capacitors. Used in hearing instruments and portable smart card readers.
For engineers reviewing the TPS60312DGSR datasheet, TPS60312DGSR pinout, TPS60312DGSR application, or TPS60312DGSR equivalent, key selection criteria include its 3.3-V regulated output, push-pull PG functionality, snooze-mode efficiency optimization for ultra-low-load battery operation, and MSOP-10 package compatibility with space-constrained portable designs.
Technical Context
The TPS60312DGSR integrates two independent charge pump stages: a voltage doubler (CP1) generating OUT1 at 2×VIN, and a regulated 1.5×/2× charge pump (CP2) with internal error amplifier and reference to maintain 3.3 V ±4% on OUT2 across input voltages from 0.9 V to 1.8 V. Automatic mode selection between 3× and 4× conversion optimizes efficiency.
Snooze mode disables the main error amplifier (4% tolerance, 50 µA supply) and engages a low-power regulator (10% tolerance, 2 µA supply) when load current drops below 1–4 mA on OUT2, enabling battery life extension in intermittent-use applications like medical sensors and metering devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage (OUT2) | 3.3 V ±4% - tightly regulated rail for powering 3.3-V logic, ADCs, or RF sections without external LDO. |
| Max Output Current (OUT2) | 20 mA - sufficient for MSP430 microcontrollers, LCD bias, or low-power sensor interfaces. |
| Input Voltage Range | 0.9 V to 1.8 V - supports single-cell alkaline, NiCd, or NiMH batteries across full discharge curve. |
| Quiescent Current (Snooze) | ≤2 µA at TC ≤25°C - lower than typical battery self-discharge, enabling multi-year shelf life in standby. |
| Switching Frequency | 470–900 kHz - enables use of small 1-µF ceramic flying/output capacitors; reduces EMI vs low-frequency alternatives. |
| Power-Good Output | Push-pull type - drives loads up to 5 mA directly; eliminates need for external pull-up resistor in sequencing circuits. |
| Package | MSOP-10 (3.05 mm × 4.98 mm) - surface-mount footprint optimized for compact portable PCB layouts. |
Pinout & Package
TPS60312DGSR is housed in a microsmall 10-pin MSOP package (DGS), measuring 3.05 mm × 4.98 mm, with exposed pad not electrically connected. Pin numbering follows standard top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SNOOZE (Pin 1) | Input control | Active-low enable for snooze mode; pulling low reduces quiescent current to ≤2 µA for ultra-low-power standby. |
| C1− (Pin 2) | Flying capacitor terminal | Negative node of first flying capacitor (C1F); connects to CP1 stage for voltage doubling to OUT1. |
| VIN (Pin 3) | Supply input | Main battery input (0.9–1.8 V); requires ≥1-µF bypass capacitor to GND for stable switching operation. |
| C1+ (Pin 4) | Flying capacitor terminal | Positive node of C1F; forms charge transfer path with C1− to generate 2×VIN on OUT1. |
| OUT1 (Pin 5) | Unregulated output | 2×VIN power rail (e.g., ~2.6 V at 1.3 V input); delivers up to 40 mA for analog circuitry or auxiliary supplies. |
| OUT2 (Pin 6) | Regulated output | Stable 3.3 V ±4% rail; maximum 20 mA load; used for digital core, communication interfaces, or precision references. |
| C2+ (Pin 7) | Flying capacitor terminal | Positive node of second flying capacitor (C2F); part of CP2 stage regulating OUT2 voltage. |
| C2− (Pin 8) | Flying capacitor terminal | Negative node of C2F; completes charge pump loop for regulated 3.3-V generation. |
| GND (Pin 9) | Reference node | System ground return for all internal circuits, flying capacitors, and output filters; must be low-impedance. |
| PG (Pin 10) | Power-good indicator | Push-pull output asserting high when OUT2 reaches ≥98% of 3.3 V; used for MCU reset or power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent outputs | Simultaneous 2×VIN (OUT1, 40 mA) and regulated 3.3 V (OUT2, 20 mA) eliminate need for separate boost + LDO solutions. |
| Snooze mode | Reduces operating current to ≤2 µA while maintaining 3.3 V ±10%, extending battery life in intermittent-use medical and metering devices. |
| No inductors required | Uses only five 1-µF ceramic capacitors - lowers BOM cost, board area, and EMI versus inductor-based DC/DC converters. |
| Push-pull power-good | Drives sequencing logic directly without external pull-up; simplifies power-up timing and reduces component count in MSP430-based systems. |
| Wide input range support | Operates down to 0.9 V input - maintains regulation through full discharge of single alkaline or NiMH cells. |
Applications
| Hearing Instruments | Portable Smart Card Readers |
|---|---|
Use Scenario: Miniature battery-powered hearing aids requiring long operational life from a single zinc-air or alkaline cell. IC Role / Device Role / Timing Role: Primary 3.3-V power source for audio codec, DSP, and RF transceiver; OUT1 powers analog front-end amplifiers. Use Value: Snooze mode draws <2 µA during silence intervals, enabling multi-week battery runtime without compromising 3.3-V rail stability. | Use Scenario: Handheld EMV-compliant payment terminals powered by AA/AAA batteries. IC Role / Device Role / Timing Role: Generates regulated 3.3 V for secure element and contactless interface; PG signal synchronizes MCU wake-up with power stabilization. Use Value: Push-pull PG eliminates external resistor, reducing layout complexity and improving reliability in field-deployed consumer devices. |
| Metering Applications (MSP430) | Home Automation Sensors |
Use Scenario: Battery-operated electricity/water meters using MSP430 microcontrollers for data logging and wireless transmission. IC Role / Device Role / Timing Role: Supplies 3.3 V to MSP430 core and 2×VIN to LCD bias or op-amp rails; PG initiates ADC calibration upon power stabilization. Use Value: 470–900 kHz switching frequency allows use of tiny 1-µF ceramics, minimizing PCB area in sealed utility meter enclosures. | Use Scenario: Zigbee/Z-Wave temperature/humidity sensors deployed in wall switches or battery-powered hubs. IC Role / Device Role / Timing Role: Powers MCU, radio transceiver, and sensing ICs from a single 1.5-V alkaline cell; snooze mode extends 2+ year battery life. Use Value: Regulated 3.3 V output ensures consistent RF performance and sensor accuracy across full battery voltage range (1.5 V → 0.9 V). |
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 |
|---|---|---|---|
| TPS60310DGSR | Same pinout and electrical specs, but open-drain PG output requiring external pull-up resistor. | Requires additional 100-kΩ to 1-MΩ resistor for PG functionality; less suitable for space-constrained or high-reliability designs. | Select when legacy schematics already use open-drain PG or when driving high-impedance monitoring inputs only. |
| MAX680ESA+ | Single-output ±5 V dual charge pump (no 3.3-V regulation or snooze mode); SO-8 package; no PG output. | Lacks regulated 3.3-V rail and ultra-low-power sleep mode; unsuitable for battery-critical 3.3-V logic applications. | Consider only for legacy ±5-V analog biasing where regulation tolerance and quiescent current are secondary concerns. |
Compared with TPS60310DGSR, TPS60312DGSR's push-pull PG reduces component count and improves sequencing robustness; compared with MAX680ESA+, it delivers tighter regulation, lower quiescent current, and dedicated 3.3-V output essential for modern low-voltage microcontrollers.
Availability
TPS60312DGSR 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 guaranteed traceable sourcing.
Supply support for TPS60312DGSR 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 technologies with over 50 years of innovation in energy-efficient IC design.
The TPS6031X product line was engineered specifically for ultra-low-power, space-constrained battery-operated devices-delivering regulated dual-rail outputs without inductors to extend runtime in hearing aids, portable medical tools, and smart sensors.
FAQ
What is the regulated output voltage of the TPS60312DGSR?
The TPS60312DGSR provides a precisely regulated 3.3 V ±4% output on pin OUT2 under all specified operating conditions (0.9–1.8 V input, –40°C to 125°C junction temperature). This rail is designed to power 3.3-V microcontrollers, sensors, and communication interfaces without additional regulation. The unregulated OUT1 output delivers 2×VIN, supporting auxiliary analog functions.
How does snooze mode function in the TPS60312DGSR?
Snooze mode in the TPS60312DGSR is enabled by pulling the SNOOZE pin low, reducing quiescent current to ≤2 µA while maintaining OUT2 within 3.3 V ±10%. It automatically exits snooze mode when load current exceeds 1–4 mA, restoring full regulation. This feature is critical for extending battery life in intermittent-use applications such as hearing instruments and home automation sensors.
What external components are required for basic operation of the TPS60312DGSR?
The TPS60312DGSR requires exactly five 1-µF ceramic capacitors: one input capacitor (CIN), two flying capacitors (C1F, C2F), and two output capacitors (C(OUT1), C(OUT2)). No inductors or resistors are needed for regulation. All capacitors should be X7R/X5R dielectric, placed adjacent to the DGS package to minimize parasitic inductance and ensure stable operation.
What is the purpose of the push-pull power-good (PG) output on the TPS60312DGSR?
The push-pull PG output on the TPS60312DGSR actively drives high (≥3 V) when OUT2 reaches ≥98% of 3.3 V and low (≤0.3 V) when out-of-regulation. Unlike open-drain variants, it requires no external pull-up resistor-simplifying schematic design and improving noise immunity in power sequencing for MSP430 or other low-voltage MCUs.
Can the TPS60312DGSR operate from a single 1.5-V alkaline battery throughout its discharge cycle?
Yes-the TPS60312DGSR supports input voltages from 0.9 V to 1.8 V, fully covering the discharge curve of a standard alkaline AA/AAA cell (1.5 V nominal → 0.9 V cutoff). Its adaptive 3×/4× charge pump architecture maintains >80% efficiency across this range, ensuring stable 3.3-V output and extended usable battery life in portable equipment.
TPS60312DGSR 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
TPS60312DGSR FAQ
1.How can I place an order for TPS60312DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60312DGSR 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 TPS60312DGSR reliable?
The price and inventory of TPS60312DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60312DGSR is usually 5 days.
3.What payment methods are accepted for TPS60312DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60312DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60312DGSR?
TPS60312DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60312DGSR 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 TPS60312DGSR?
For technical support, including TPS60312DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60312DGSR requirements.
6.How does Aetrix verify that TPS60312DGSR is sourced from the original manufacturer or authorized distributors?
All TPS60312DGSR 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 TPS60312DGSR meets industry standards.
7.What is the process for return or replacement of TPS60312DGSR?
All TPS60312DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS60312DGSR, 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 TPS60312DGSR part is unused and in its original packaging.
Return procedure for TPS60312DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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