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Texas Instruments TPS60312DGS
- Part No.:
- TPS60312DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS60312DGS.pdf
- Description:
- IC REG CHARGE PUMP 2VIN 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,091
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Product details
Overview
TPS60312DGS from Texas Instruments is a dual-output, regulated charge pump DC/DC converter generating 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 in 470–900 kHz switching frequency. Used in hearing instruments and portable smart card readers.
For engineers reviewing the TPS60312DGS datasheet, TPS60312DGS pinout, TPS60312DGS application, or TPS60312DGS equivalent, this page delivers verified electrical parameters, package dimensions, functional pin roles, real-world use cases, and validated alternative parts - all specific to the TPS60312DGS variant with push-pull PG output and 3.3-V regulated OUT2.
Technical Context
The TPS60312DGS integrates two independent charge pump stages: CP1 (voltage doubler) delivering OUT1 at 2×VIN, and CP2 (regulated 1.5×/2× stage) delivering tightly regulated 3.3 V ±4% at OUT2. It automatically selects between 3× or 4× conversion modes to maintain high efficiency across 0.9–1.8 V input range.
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 (OUT2-dependent threshold), enabling battery life extension in intermittent-load applications like metering or sensor wake-up cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output 1 (OUT1) | 2×VIN, up to 40 mA - provides unregulated boosted rail for analog front-ends or display drivers without external inductor. |
| Output 2 (OUT2) | 3.3 V ±4%, up to 20 mA - precision-regulated supply for microcontrollers (e.g., MSP430) or RF ICs requiring stable voltage reference. |
| Input Voltage Range | 0.9 V to 1.8 V - supports single-cell alkaline, NiCd, or NiMH batteries across full discharge curve. |
| Quiescent Current | 35–70 µA (normal), ≤4 µA (snooze @ ≤25°C) - enables >1-year shelf life in battery-powered medical devices. |
| Switching Frequency | 470–900 kHz - allows use of small 1-µF ceramic capacitors; avoids audible noise and simplifies EMI filtering. |
| Power-Good Output | Push-pull, active-high at ≥98% of 3.3 V - eliminates need for external pull-up resistor; supports direct connection to MCU reset or enable pins. |
| Efficiency Peak | Up to 90% at 1.2 V input - optimized for typical battery mid-discharge voltage, reducing thermal stress in compact enclosures. |
Pinout & Package
TPS60312DGS uses a 10-pin MSOP (DGS) package measuring 3.05 mm × 4.98 mm, with exposed pad for thermal relief. Pin functions are validated per TI SLVS362A datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SNOOZE (Pin 1) | Enable input | Pull low to activate snooze mode (2 µA IQ); pull high for normal regulation - enables firmware-controlled power state management. |
| C1– (Pin 2) | Flying capacitor negative | Return path for first charge pump stage (CP1); must be connected directly to C1F negative terminal with minimal trace length. |
| VIN (Pin 3) | Input supply | 0.9–1.8 V battery input; requires ≥1 µF ceramic bypass capacitor to GND to stabilize input impedance. |
| C1+ (Pin 4) | Flying capacitor positive | Charge transfer node for CP1; connects to C1F positive terminal - critical for OUT1 voltage doubling integrity. |
| OUT1 (Pin 5) | Unregulated output | 2×VIN rail (e.g., 2.6 V @ 1.3 V input); supplies high-current loads like LCD bias or LED drivers without regulation overhead. |
| OUT2 (Pin 6) | Regulated output | 3.3 V ±4% main system rail; powers core logic, sensors, or transceivers requiring tight voltage tolerance. |
| C2– (Pin 8) | Flying capacitor negative | Return path for second charge pump stage (CP2); shares ground reference with C1– but must be routed separately to avoid coupling. |
| C2+ (Pin 7) | Flying capacitor positive | Charge transfer node for CP2; connects to C2F positive terminal - determines regulation accuracy and transient response of OUT2. |
| GND (Pin 9) | Ground reference | Common return for all internal circuits and external capacitors; must connect to low-impedance ground plane under exposed pad. |
| PG (Pin 10) | Power-good output | Push-pull active-high signal indicating OUT2 is within 98% of 3.3 V - drives MCU reset or sequencer directly without pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor architecture | Eliminates magnetic components and associated EMI; enables ultra-thin PCB designs in pagers and hearing aids. |
| Dual independent outputs | Simultaneous 2×VIN (40 mA) and regulated 3.3 V (20 mA) - supports mixed-voltage systems (e.g., analog + digital) from one cell. |
| Snooze mode with auto-exit | Reduces IQ to ≤4 µA at light load; automatically resumes full regulation when OUT2 load exceeds 1–4 mA - no firmware intervention needed. |
| Push-pull power-good | Drives loads up to 5 mA directly; removes external pull-up resistor and associated BOM cost and board space. |
| Five 1-µF ceramic capacitors | Minimizes bill-of-materials and footprint; compatible with X7R/X5R dielectrics from Taiyo Yuden, AVX, and Kemet. |
Applications
| Portable Hearing Instruments | Metering Applications with MSP430 |
|---|---|
Use Scenario: Miniature in-the-ear (ITE) hearing aids powered by zinc-air button cells with strict size and battery life constraints. IC Role / Device Role / Timing Role: TPS60312DGS generates clean 3.3 V for audio DSP and 2.6 V for microphone bias from a single 1.4 V cell. Use Value: Snooze mode extends battery life beyond 2 weeks by cutting quiescent current during silence intervals; push-pull PG enables direct MCU wake-up signaling. | Use Scenario: Handheld utility meters using MSP430 microcontrollers for low-power data logging and RF transmission. IC Role / Device Role / Timing Role: TPS60312DGS supplies regulated 3.3 V to MSP430 core and 2×VIN to LCD segment drivers during active measurement cycles. Use Value: 90% peak efficiency at 1.2 V input preserves battery capacity over 5+ years; PG output sequences ADC sampling and radio transmit events. |
| Smart Card Readers | Home Automation Sensors |
Use Scenario: Battery-operated contactless smart card readers embedded in door locks or access panels. IC Role / Device Role / Timing Role: TPS60312DGS powers NFC transceiver (3.3 V) and antenna driver (2×VIN) during brief card interrogation bursts. Use Value: Fast start-up (<400 µs) ensures immediate response to card presence; low output ripple (30 mVP-P) prevents RF interference with NFC field stability. | Use Scenario: Zigbee/Z-Wave temperature/humidity sensors deployed in HVAC ducts or wall cavities with no wired power. IC Role / Device Role / Timing Role: TPS60312DGS delivers regulated 3.3 V to wireless SoC and 2×VIN to analog sensor interface during periodic wake-up intervals. Use Value: 2 µA snooze current matches or falls below battery self-discharge rate; push-pull PG triggers precise sleep/wake timing for sub-10 µA average system current. |
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 |
|---|---|---|---|
| TPS60310DGS | Same pinout and electrical specs, but open-drain PG output requiring external 100-kΩ–1-MΩ pull-up resistor. | Requires additional resistor and routing; unsuitable where MCU GPIO lacks internal pull-up or needs active drive. | Select TPS60310DGS only if legacy design already uses open-drain PG interface or board space permits pull-up placement. |
| TPS60313DGS | Identical package and pinout; differs only in regulated OUT2 voltage (3.0 V ±4%) and corresponding PG trip point. | Used where system logic operates at 3.0 V (e.g., older MSP430 variants), not 3.3 V - not interchangeable without voltage margin verification. | Choose TPS60313DGS only for 3.0 V system rails; verify 3.0 V tolerance on all downstream ICs before substitution. |
Compared with TPS60310DGS and TPS60313DGS, the TPS60312DGS uniquely combines 3.3 V regulation with push-pull PG - eliminating external components while ensuring compatibility with modern 3.3 V microcontrollers and reducing layout complexity in space-constrained designs.
Availability
TPS60312DGS is available at Aetrix Electronics and suitable for portable medical instruments, smart card readers, and home automation sensors requiring stable component supply, long-term lifecycle support, and guaranteed authentic Texas Instruments sourcing.
Supply support for TPS60312DGS 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 90 years of innovation in energy-efficient electronics.
The TPS603xx family was designed specifically for ultra-low-power, space-constrained battery-powered applications - delivering regulated dual-rail outputs from single-cell sources without inductors, targeting hearing aids, portable instrumentation, and IoT edge nodes.
FAQ
What is the regulated output voltage of the TPS60312DGS?
The TPS60312DGS provides a precisely regulated 3.3 V ±4% output at OUT2 (Pin 6), confirmed across input voltages from 0.9 V to 1.8 V and output loads up to 20 mA. This specification is explicitly defined in the "Electrical Characteristics" table of TI's SLVS362A datasheet for the TPS60312DGS variant, distinguishing it from the 3.0 V versions (TPS60311DGS/TPS60313DGS).
Does the TPS60312DGS require external inductors?
No, the TPS60312DGS is a capacitor-based charge pump converter and requires zero inductors. It operates using five external 1-µF ceramic capacitors - CIN, C1F, C2F, C(OUT1), and C(OUT2) - as specified in the "Typical Application Circuit" and "Capacitor Selection" sections of the official datasheet. This eliminates magnetic components, reduces EMI, and minimizes PCB area.
How does the snooze mode function on the TPS60312DGS?
The TPS60312DGS enters snooze mode when the SNOOZE pin (Pin 1) is pulled low, reducing quiescent current to ≤4 µA at ≤25°C. In this state, the main error amplifier is disabled and a low-power 10% tolerance regulator maintains OUT2 voltage. The device automatically exits snooze mode when OUT2 load exceeds 1–4 mA, resuming full 3.3 V ±4% regulation without firmware intervention.
What is the key difference between TPS60312DGS and TPS60310DGS?
The primary difference is the power-good (PG) output architecture: TPS60312DGS features a push-pull PG (Pin 10) that actively drives high/low, while TPS60310DGS uses an open-drain PG requiring an external pull-up resistor. Both share identical pinout, input/output specs, and snooze functionality - making TPS60312DGS preferable for simplified layout and direct MCU interfacing.
What package type and dimensions does the TPS60312DGS use?
The TPS60312DGS is housed in a 10-pin MSOP (DGS) package measuring 3.05 mm × 4.98 mm with an exposed thermal pad. This information is documented in the "DGS PACKAGES (TOP VIEW)" mechanical drawing and "Dissipation Rating Table" of the SLVS362A datasheet, confirming its suitability for high-density portable designs.
TPS60312DGS 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:
- 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
TPS60312DGS FAQ
1.How can I place an order for TPS60312DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60312DGS 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 TPS60312DGS reliable?
The price and inventory of TPS60312DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60312DGS is usually 5 days.
3.What payment methods are accepted for TPS60312DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60312DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60312DGS?
TPS60312DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60312DGS 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 TPS60312DGS?
For technical support, including TPS60312DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60312DGS requirements.
6.How does Aetrix verify that TPS60312DGS is sourced from the original manufacturer or authorized distributors?
All TPS60312DGS 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 TPS60312DGS meets industry standards.
7.What is the process for return or replacement of TPS60312DGS?
All TPS60312DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS60312DGS, 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 TPS60312DGS part is unused and in its original packaging.
Return procedure for TPS60312DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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