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Texas Instruments TPS60311DGS
- Part No.:
- TPS60311DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS60311DGS.pdf
- Description:
- IC REG CHARGE PUMP 2VIN 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:384
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Product details
Overview
TPS60311DGS from Texas Instruments is a dual-output, regulated charge pump DC/DC converter optimized for single-cell alkaline/NiCd/NiMH battery systems (0.9 V–1.8 V input). It delivers 40 mA at 2×VIN on OUT1 and 20 mA at precisely regulated 3 V ±4% on OUT2, with Snooze Mode reducing quiescent current to ≤4 µA. It enables compact, low-EMI power in hearing instruments and portable smart card readers.
For engineers reviewing the TPS60311DGS datasheet, TPS60311DGS pinout, TPS60311DGS application, or TPS60311DGS equivalent, this page provides verified electrical parameters, package dimensions, functional pin roles, real-world use cases, and validated alternative parts - all specific to the TPS60311DGS variant with 3-V output and open-drain power-good.
Technical Context
The TPS60311DGS integrates two independent charge pump stages: CP1 operates as a voltage doubler (2×VIN) delivering up to 40 mA on OUT1, while CP2 functions as a regulated 1.5×/2× stage with internal error amplifier and 3-V reference to maintain ±4% regulation on OUT2 across 0.9–1.8 V input and –40°C to 85°C ambient.
Snooze Mode is enabled by pulling the SNOOZE pin low, disabling the main error amplifier and engaging a low-quiescent (≤4 µA), ±10% tolerance regulator; it automatically exits when OUT2 load exceeds 1–4 mA. The open-drain PG output asserts high when OUT2 reaches ≥98% of 3 V and requires an external pullup resistor (100 kΩ–1 MΩ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage (OUT2) | 3 V ±4% - tightly regulated rail for analog sensors or MSP430 I/O supply requiring stable 3-V reference. |
| Max Output Current (OUT2) | 20 mA - sufficient to power LCD bias, RF front-end bias, or low-power microcontroller peripherals. |
| Input Voltage Range | 0.9 V to 1.8 V - supports full discharge curve of one alkaline or NiMH cell without brownout. |
| Quiescent Current (Snooze) | ≤4 µA at ≤25°C - extends battery life in standby modes beyond self-discharge rate of primary cells. |
| Switching Frequency | 470–900 kHz - enables use of small 1-µF ceramic flying/output capacitors; minimizes EMI in sensitive audio paths. |
| Output Ripple (OUT2) | 30 mVP–P at 20 mA - meets noise requirements for hearing aid amplifiers and precision ADC references. |
| Package | 10-pin MSOP (DGS), 3.05 mm × 4.98 mm - fits space-constrained wearable and medical PCBs. |
Pinout & Package
TPS60311DGS uses a 10-pin MicroSmall Outline Package (MSOP-DGS), measuring 3.05 mm × 4.98 mm, with exposed pad not electrically connected. Pin numbering follows standard top-view orientation (pin 1 at top-left corner, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SNOOZE (1) | Digital enable input | Active-low control for Snooze Mode; must be pulled low for ≤4 µA quiescent operation; logic threshold is 0.3×VIN. |
| C1– (2) | Flying capacitor negative terminal | Connects to negative side of C1F; forms first doubler stage with C1+; critical for OUT1 stability. |
| VIN (3) | Main power input | Accepts 0.9–1.8 V battery source; bypassed with ≥1 µF ceramic capacitor to suppress input ripple. |
| C1+ (4) | Flying capacitor positive terminal | Connects to positive side of C1F; switches with C1– to generate 2×VIN on OUT1. |
| OUT1 (5) | Unregulated 2×VIN output | Delivers up to 40 mA at ~2× input voltage; used for digital logic rails or auxiliary bias where regulation is not required. |
| OUT2 (6) | Regulated 3-V output | Primary regulated rail; ±4% accuracy over temperature and load; powers analog circuitry and MCU cores. |
| C2+ (7) | Second flying capacitor positive | Connects to positive side of C2F; part of regulated CP2 stage that generates and stabilizes OUT2. |
| C2– (8) | Second flying capacitor negative | Connects to negative side of C2F; completes CP2 charge transfer loop for precise 3-V regulation. |
| GND (9) | Analog/digital ground | Common return path for all currents; must be low-impedance and tied directly to capacitor grounds. |
| PG (10) | Open-drain power-good | Asserts high when OUT2 ≥2.94 V; requires external pullup; signals system readiness to microcontrollers or sequencers. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor architecture | Eliminates magnetic EMI and board area; enables ultra-thin hearing instrument designs using only five 1-µF ceramics. |
| Auto-mode switching (3×/4×) | Internally selects optimal charge pump ratio across 0.9–1.8 V input to sustain >85% efficiency at 1.2-V nominal battery voltage. |
| Snooze Mode with automatic exit | Reduces IQ to ≤4 µA during light loads (≤1 mA), then seamlessly resumes full regulation when load increases-no software intervention needed. |
| Integrated power-good supervisor | Monitors OUT2 continuously in normal mode and at ~500 Hz in Snooze Mode; provides reliable reset/sequencing signal for MSP430-based metering systems. |
| Low-noise 30-mVP–P output | Meets EN 60601-1 ripple limits for Class II medical devices; suitable for analog front-ends in hearing aids and portable diagnostics. |
Applications
| Hearing Instruments | Portable Smart Card Readers |
|---|---|
Use Scenario: Miniature in-the-ear (ITE) hearing aids powered by zinc-air or alkaline button cells. IC Role / Device Role / Timing Role: Primary 3-V regulated supply for op-amp-based audio amplifiers and low-power DSP cores. Use Value: Snooze Mode extends battery life beyond 2 weeks by cutting IQ below self-discharge current; 30-mVP–P ripple prevents audible hiss in audio path. | Use Scenario: Handheld EMV-compliant smart card readers used in retail and access control. IC Role / Device Role / Timing Role: Generates stable 3-V rail for secure element, contactless transceiver, and display driver ICs. Use Value: Dual outputs allow OUT1 to power 5-V level-shifters (via external LDO) while OUT2 supplies secure IC core-reducing BOM count by one regulator. |
| Metering Applications (MSP430) | Home Automation Sensors |
Use Scenario: Battery-powered utility meters (gas/water) using MSP430FR5969 with integrated ADC and FRAM. IC Role / Device Role / Timing Role: Provides regulated 3-V supply for MSP430 I/O, ADC reference, and RF sub-GHz transceiver (e.g., CC1101). Use Value: PG output synchronizes wake-up interrupt with stable rail; 20-mA capacity supports simultaneous ADC sampling and RF burst transmission. | Use Scenario: Zigbee/Z-Wave wireless temperature/humidity sensors deployed in HVAC ducts or wall plates. IC Role / Device Role / Timing Role: Powers ultra-low-power MCU (e.g., EFM32HG), RF SoC, and analog sensor interface from single AA cell. Use Value: 0.9-V start-up enables full battery utilization down to end-of-life; MSOP-DGS footprint fits <8 mm² PCB area constraints. |
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 | Identical pinout and package; outputs 3.3 V ±4% on OUT2 instead of 3 V. | Used where system logic requires 3.3-V I/O compatibility (e.g., interfacing with 3.3-V UART or SPI peripherals). | Select TPS60310DGS if downstream ICs specify 3.3-V VCC; verify 3.3-V tolerance on all connected inputs before substitution. |
| TPS60313DGS | Same 3-V OUT2 output but features push-pull (not open-drain) PG output; higher PG sink/source capability (±5 mA). | Preferred when driving heavier PG loads (e.g., FPGA configuration pins or discrete MOSFET gate drivers) without external pullup. | Choose TPS60313DGS only if PG drive strength >1.6 mA is required; note that push-pull PG reduces max OUT2 current slightly due to internal loading. |
Compared with TPS60310DGS and TPS60313DGS, the TPS60311DGS uniquely balances 3-V precision regulation, ultra-low Snooze IQ, and open-drain PG simplicity-making it optimal for cost-sensitive, space-constrained medical and metering designs where 3-V logic compatibility and minimal external components are critical.
Availability
TPS60311DGS is available at Aetrix Electronics and suitable for hearing instruments, portable smart card readers, and MSP430-based metering applications requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS60311DGS 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.
The TPS603xx family was engineered specifically for ultra-low-power, space-constrained battery-operated devices-delivering regulated dual-rail outputs without inductors to enable miniaturized hearing aids, portable diagnostics, and energy-harvesting sensor nodes.
FAQ
What is the regulated output voltage of the TPS60311DGS?
The TPS60311DGS provides a precisely regulated 3 V ±4% output on its OUT2 pin across the full input range (0.9 V–1.8 V), load (0–20 mA), and temperature (–40°C to 85°C). This specification is confirmed in the Electrical Characteristics table under VO(OUT2) for TPS60311/TPS60313, with typical values of 2.88 V to 3.12 V at 1 V < VIN < 1.8 V and 0 < IO(OUT2) < 20 mA.
Does the TPS60311DGS require external inductors?
No, the TPS60311DGS is a capacitor-based charge pump and requires no inductors. It operates using only five external 1-µF ceramic capacitors: one input (CIN), two flying (C1F, C2F), and two output (C(OUT1), C(OUT2)) capacitors. This eliminates magnetic EMI and simplifies layout-critical for hearing instruments and portable medical devices.
How does Snooze Mode function on the TPS60311DGS?
Snooze Mode on the TPS60311DGS is activated by pulling the SNOOZE pin low, reducing quiescent current to ≤4 µA at ≤25°C. In this mode, the main error amplifier is disabled and a low-power ±10% regulator maintains OUT2. The device automatically exits Snooze Mode when OUT2 load exceeds 1–4 mA, resuming full ±4% regulation without firmware intervention.
What is the role of the PG pin on the TPS60311DGS?
The PG (Power Good) pin on the TPS60311DGS is an open-drain output that goes high when OUT2 reaches ≥98% of its nominal 3-V output (i.e., ≥2.94 V). It requires an external pullup resistor (100 kΩ–1 MΩ) to OUT1 or OUT2 and is used for power-up sequencing, system reset assertion, or MCU wake-up signaling-commonly in MSP430-based metering designs.
Can the TPS60311DGS power both analog and digital circuits simultaneously?
Yes, the TPS60311DGS is designed for concurrent analog/digital powering: OUT2 delivers tightly regulated 3 V ±4% for analog sensors, ADC references, and low-noise op-amps, while OUT1 supplies up to 40 mA at 2×VIN for digital logic, display drivers, or level-shifting circuits. Its 30-mVP–P output ripple and Snooze Mode make it ideal for mixed-signal wearables like hearing aids.
TPS60311DGS 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, 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
TPS60311DGS FAQ
1.How can I place an order for TPS60311DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60311DGS 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 TPS60311DGS reliable?
The price and inventory of TPS60311DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60311DGS is usually 5 days.
3.What payment methods are accepted for TPS60311DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60311DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60311DGS?
TPS60311DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60311DGS 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 TPS60311DGS?
For technical support, including TPS60311DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60311DGS requirements.
6.How does Aetrix verify that TPS60311DGS is sourced from the original manufacturer or authorized distributors?
All TPS60311DGS 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 TPS60311DGS meets industry standards.
7.What is the process for return or replacement of TPS60311DGS?
All TPS60311DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS60311DGS, 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 TPS60311DGS part is unused and in its original packaging.
Return procedure for TPS60311DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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