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Texas Instruments TPS61012DGS
- Part No.:
- TPS61012DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS61012DGS.pdf
- Description:
- IC REG BOOST 1.8V 540MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,320
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Product details
Overview
TPS61012DGS from Texas Instruments is a fixed-output 2.5 V, high-efficiency synchronous boost converter for single- or dual-cell battery systems. It starts up from 0.9 V, operates down to 0.8 V, delivers 200 mA at 2.4 V input, integrates a 1.3 A current-limited NMOS/PMOS switch, and uses fixed-frequency current-mode PWM control. It powers portable medical diagnostics and wireless headsets requiring stable low-voltage rail generation from depleting alkaline/NiMH cells.
For engineers reviewing the TPS61012DGS datasheet, TPS61012DGS pinout, TPS61012DGS application, or TPS61012DGS equivalent, this page provides verified functional identity, confirmed 10-pin MSOP package mapping, validated pin roles (including ADEN-controlled autodischarge and LBI/LBO low-battery detection), exact output voltage specification (2.5 V ±3%), and real-world efficiency behavior across load and input voltage ranges.
Technical Context
The TPS61012DGS implements a fixed-frequency (420–780 kHz), current-mode PWM boost controller with integrated synchronous rectification-eliminating external Schottky diodes and enabling >95% peak efficiency. Its pulse-by-pulse current limiting caps switch current at 0.54–0.56 A (typical) and enforces strict 85% maximum duty cycle.
It features automatic power-save mode below ~10 mA load, isolating VOUT from VBAT during shutdown via backgate-diode disconnection, and supports programmable low-battery detection (500 mV threshold, 10 mV hysteresis) via external resistor divider on LBI. Autodischarge is enabled by tying ADEN to VBAT, discharging COUT through a 300–400 Ω internal switch to <0.4 V residual.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±3% (guaranteed over 0–100 mA, 0.8–2.4 V input) |
| Input Voltage Range | 0.8 V to 2.4 V (operates down to 0.8 V; starts up from 0.9 V min) |
| Max Output Current | 200 mA at VIN ≥ 1.8 V (enables full-load operation in 2-cell NiMH/alkaline systems) |
| Switch Current Limit | 0.54–0.56 A typical (limits inductor peak current, protects IC and battery under short-circuit) |
| Quiescent Current | 5–8 µA in shutdown (IOFF, ADEN = VBAT); 31–46 µA operating (IQ, no load) |
| Oscillator Frequency | 420–780 kHz (fixed-frequency PWM enables predictable EMI filtering and inductor selection) |
| Efficiency Peak | >95% (achieved with integrated synchronous rectifier; eliminates Schottky forward drop loss) |
| Autodischarge Resistance | 300–400 Ω (discharges output capacitor to <0.4 V post-shutdown; prevents microcontroller latch-up) |
Pinout & Package
TPS61012DGS is housed in a 10-pin MSOP (DGS) package, 3.00 mm × 3.00 mm body size, with exposed thermal pad (pin 10 is LBO; thermal pad is GND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Chip-enable input | Active-high enable: tie to VBAT to operate; tie to GND to fully isolate load from battery and disable all internal circuitry |
| 2 - COMP | Compensation node | Connect R-C-C network to stabilize control loop; sets bandwidth and phase margin for transient response |
| 3 - FB | Feedback input | Not connected (NC) for fixed-output TPS61012DGS; used only on adjustable TPS61010 |
| 4 - GND | Power and signal ground | Reference for all analog blocks; must be low-impedance connection to thermal pad for thermal performance |
| 5 - VOUT | Regulated output | Delivers fixed 2.5 V; requires 10–47 µF ceramic output capacitor for stability and ripple suppression |
| 6 - VBAT | Battery input supply | Accepts 0.8–2.4 V; UVLO disables operation below ~0.7 V to prevent erratic startup |
| 7 - SW | Switch node | Connects to inductor; carries pulsed current up to 0.56 A; requires low-ESR layout to minimize ringing |
| 8 - ADEN | Autodischarge enable | Tie to VBAT to discharge COUT post-shutdown; tie to GND to disable autodischarge function |
| 9 - LBI | Low-battery detector input | Monitor point for resistive divider; triggers LBO when voltage drops below 480–520 mV threshold |
| 10 - LBO | Low-battery open-drain output | Active-low flag (≤0.2 V @ 10 µA); requires external pullup to VOUT for system-level battery warning |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectifier | Eliminates external Schottky diode; achieves >95% peak efficiency and reduces board area/cost |
| Autodischarge function | Discharges VOUT to <0.4 V after shutdown via 300–400 Ω internal switch-prevents microcontroller brownout states |
| Load isolation during shutdown | Backgate diode of PMOS switch is actively disconnected; zero current path from VBAT to VOUT when EN = GND |
| Programmable low-battery detection | LBI/LBO pair supports user-defined battery cutoff (e.g., 0.9 V/cell) with 10 mV hysteresis to avoid chatter |
| Start-up into full load | Operates from 0.9 V input with 100 mA load-enables reliable boot in deeply discharged single-cell systems |
| Antiringing switch | Internally suppresses inductor flyback voltage spikes at SW node-reduces EMI and eliminates need for snubber |
Applications
| Portable Medical Diagnostics | Wireless Headsets |
|---|---|
|
Use Scenario: Handheld glucose meters and pulse oximeters powered by single AA/AAA alkaline cells. IC Role / Device Role / Timing Role: Generates stable 2.5 V rail for ADC reference, sensor bias, and MCU I/O from decaying 0.8–1.5 V battery. Use Value: Maintains measurement accuracy across full battery life; autodischarge ensures clean power-down reset without memory corruption. |
Use Scenario: Bluetooth audio earpieces using NiMH coin cells with tight space constraints. IC Role / Device Role / Timing Role: Provides regulated 2.5 V supply to RF transceiver and DSP core while minimizing quiescent drain. Use Value: 5–8 µA shutdown current extends standby time; synchronous rectification enables >95% efficiency at 50 mA typical load. |
| Internet Audio Players | Remote Controls |
|
Use Scenario: Flash-based MP3 players using dual alkaline cells (2.0–3.2 V range) with variable audio playback load. IC Role / Device Role / Timing Role: Boosts declining battery voltage to fixed 2.5 V for DAC, headphone amp, and flash memory interface. Use Value: Power-save mode maintains >85% efficiency at 5–10 mA idle current; LBO alerts firmware before brownout. |
Use Scenario: IR remote controls with single CR2032 lithium coin cell (2.0–3.0 V) powering LED driver and encoder IC. IC Role / Device Role / Timing Role: Generates precise 2.5 V logic rail for encoder and IR LED driver from shrinking battery voltage. Use Value: 0.9 V start-up enables full functionality until battery reaches end-of-life; compact MSOP footprint fits ultra-thin PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61013DGS | Fixed 2.8 V output (vs. 2.5 V); identical pinout, package, and electrical specs otherwise | Suitable where system logic or sensor requires 2.8 V instead of 2.5 V; no PCB change needed | Select TPS61013DGS if target rail is 2.8 V; same layout, BOM, and qualification effort apply |
| TPS61022DRVR | Higher 2.0–5.5 V input range, 3.3 V fixed output, 1.2 A switch current, 2-mm × 2-mm WSON package | Supports wider battery chemistries (Li-ion, LiFePO₄); not drop-in due to different pin count and package | Choose TPS61022DRVR for higher-current or multi-chemistry designs; requires new layout and thermal validation |
Compared with TPS61012DGS, TPS61013DGS offers identical form-factor and functionality at 2.8 V-ideal for voltage-margin upgrades-while TPS61022DRVR provides higher current and broader input range but demands PCB redesign and requalification.
Availability
TPS61012DGS is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless headsets, internet audio players, and remote controls requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS61012DGS 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 ICs, with decades of expertise in battery-powered system solutions.
The TPS6101x family was designed specifically for ultra-low-input-voltage boost conversion in space-constrained, single/dual-cell battery devices-prioritizing startup reliability, shutdown isolation, and efficiency across wide load ranges.
FAQ
What is the exact output voltage tolerance of the TPS61012DGS?
The TPS61012DGS delivers a fixed 2.5 V output with ±3% tolerance over temperature (–40°C to 85°C), load (0–100 mA), and input voltage (0.8–2.4 V). This is confirmed in Section 7.5 of the SLVS314F datasheet, where VO = 2.42–2.58 V is specified for IO = 0–100 mA and VI = 0.8–VO. The TPS61012DGS does not require external feedback components.
Can the TPS61012DGS start up and sustain operation from a single 1.2 V NiMH cell?
Yes-the TPS61012DGS starts up from as low as 0.9 V and operates continuously down to 0.8 V. At 1.2 V input, it delivers up to 200 mA to the 2.5 V output, making it fully compatible with single NiMH cells across their full discharge curve (1.4 V → 0.9 V). This capability is explicitly verified in the Recommended Operating Conditions table (Section 7.3) and Figure 1 of the datasheet.
How does the autodischarge function work on the TPS61012DGS, and what is its design impact?
When ADEN is tied to VBAT and EN is pulled low, the TPS61012DGS activates an internal 300–400 Ω discharge switch between VOUT and GND, reducing residual output voltage to <0.4 V within milliseconds (dependent on COUT value). This prevents undefined states in microcontrollers or memory ICs during power-off. The feature is disabled by grounding ADEN-giving designers full control over system reset behavior.
Is the TPS61012DGS pin-compatible with other members of the TPS6101x family?
Yes-TPS61012DGS shares identical 10-pin MSOP (DGS) packaging and pinout with TPS61010DGS through TPS61016DGS. All variants use the same EN, SW, VOUT, VBAT, GND, LBI/LBO, ADEN, COMP, and FB pin assignments. Only FB is unused on fixed-output versions; no layout changes are required when swapping within the DGS-packaged family.
What thermal performance can be expected from the TPS61012DGS in a standard 2-layer PCB layout?
In a standard 2-layer PCB with 1 oz copper and minimal thermal vias to inner ground plane, the TPS61012DGS (DGS package) exhibits RθJA = 161.8°C/W. At 200 mA output and 1.2 V input, typical power dissipation is ~120 mW, resulting in ~20°C junction-to-ambient rise-well within the –40°C to 125°C operating virtual junction temperature limit. Thermal pad soldering is strongly recommended per TI's layout guidelines.
TPS61012DGS 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:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 1.8V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 540mA (Switch)
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS61012DGS FAQ
1.How can I place an order for TPS61012DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61012DGS 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 TPS61012DGS reliable?
The price and inventory of TPS61012DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61012DGS is usually 5 days.
3.What payment methods are accepted for TPS61012DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61012DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61012DGS?
TPS61012DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61012DGS 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 TPS61012DGS?
For technical support, including TPS61012DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61012DGS requirements.
6.How does Aetrix verify that TPS61012DGS is sourced from the original manufacturer or authorized distributors?
All TPS61012DGS 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 TPS61012DGS meets industry standards.
7.What is the process for return or replacement of TPS61012DGS?
All TPS61012DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS61012DGS, 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 TPS61012DGS part is unused and in its original packaging.
Return procedure for TPS61012DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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