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Texas Instruments TPS60125PWP
- Part No.:
- TPS60125PWP
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS60125PWP.pdf
- Description:
- IC REG CHARGE PUMP 3V 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,325
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Product details
Overview
TPS60125PWP from Texas Instruments is a regulated 200-mA, 3-V ±4% charge-pump DC/DC converter for two-cell battery systems (1.8 V–3.6 V input), featuring power-good detection, 55-µA quiescent current, and operation in 1.5× or 2× adaptive conversion modes. It delivers stable output for portable medical devices like glucose meters and handheld instrumentation.
For engineers reviewing the TPS60125PWP datasheet, TPS60125PWP pinout, TPS60125PWP application, or TPS60125PWP equivalent, key selection criteria include its 3-V regulated output with ±4% tolerance, 200-mA continuous output current capability, power-good open-drain output (PG), shutdown current of 0.05 µA, and compatibility with ceramic flying capacitors (2.2 µF) and output capacitor (22 µF).
Technical Context
The TPS60125PWP implements ACTIVE-CYCLE regulation with adaptive mode switching: it automatically selects 2× voltage-doubling mode below ~2.4 V input and 1.5× mode above to maximize efficiency across the full 1.8–3.6 V battery range. Its internal 1.21-V reference and resistive feedback network enable precise output regulation without external resistors.
It integrates pulse-skip mode for light-load efficiency, undervoltage lockout at 1.6 V (typ), short-circuit current limiting to 115 mA, and a dedicated open-drain power-good (PG) output that asserts low when VO falls below 90% of nominal. The ENABLE pin supports logic-level control with 0.3×VI low threshold and 0.7×VI high threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±4% - tightly regulated rail for 3-V logic and analog subsystems |
| Max Output Current | 200 mA - sufficient for microprocessor cores, sensors, and display drivers in compact battery-powered systems |
| Input Voltage Range | 1.8 V to 3.6 V - matches discharge profile of two alkaline/NiMH/NiCd cells |
| Quiescent Current | 55 µA - minimizes standby drain in always-on portable instruments |
| Shutdown Current | 0.05 µA - enables ultra-low-power sleep states with load isolation |
| Power-Good Threshold | 90% of VO (2.7 V) - provides reliable system reset or supervisor signaling |
| Switching Frequency | 210–450 kHz - balances EMI, capacitor size, and efficiency without inductors |
Pinout & Package
The TPS60125PWP is housed in a 20-pin thermally enhanced PowerPAD™ TSSOP (PWP) package with exposed thermal pad for improved power dissipation. Pin functions are validated per SLVS257B Rev. August 2000.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (pins 1,2,19,20) | Analog ground reference | Low-noise return path for internal bandgap and error amplifier; must be short-traced to PGND |
| ENABLE (pin 3) | Logic enable input | Active-high control: drives device into shutdown (0.05 µA IQ) when pulled low; VIH = 0.7×VI, VIL = 0.3×VI |
| FB (pin 4) | Feedback input | Connects directly to OUT; internal 1.21-V reference sets 3.0-V output via fixed resistor ratio |
| OUT (pins 5,16) | Regulated power output | Dual pins reduce IR drop and improve current sharing; bypassed with 22-µF X7R ceramic |
| C1+, C1− (pins 6,8) | Flying capacitor terminals | Form first charge-pump stage; require 2.2-µF X7R ceramic with low ESR |
| C2+, C2− (pins 13,15) | Flying capacitor terminals | Form second charge-pump stage; identical 2.2-µF X7R requirement as C1 |
| IN (pins 7,14) | Input supply | Accepts 1.8–3.6 V; dual pins reduce trace resistance; bypassed with 10-µF X7R ceramic |
| PGND (pins 9–12) | Power ground | High-current return for charge-pump switching; must be connected together and tied to thermal pad |
| PG (pin 17) | Power-good open-drain output | Asserts low when VO < 2.7 V; requires external 100-kΩ–1-MΩ pullup to OUT |
| NC (pin 18) | No connect | Not internally bonded; leave unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive 1.5×/2× conversion mode | Automatically selects optimal gain based on VI and IO to maintain >80% efficiency across full battery range |
| Integrated power-good (PG) comparator | Provides system-level voltage monitoring without external supervisor IC or resistive divider |
| No-inductor architecture | Eliminates magnetic EMI sources and PCB area for inductors; uses only four ceramic capacitors |
| Pulse-skip light-load regulation | Reduces switching activity at low IO, cutting IQ to 55 µA while maintaining <10-mV ripple |
| Load isolation in shutdown | Disconnects OUT from IN during ENABLE=low, preventing backfeed and enabling true zero-load battery drain |
Applications
| Glucose Meters | Handheld Medical Scanners |
|---|---|
Use Scenario: Portable blood glucose analyzers powered by two AA alkaline cells with intermittent sensor excitation and LCD backlighting. IC Role / Device Role / Timing Role: Primary 3-V regulated supply for ADC, microcontroller, and electrochemical sensor interface. Use Value: 200-mA output sustains peak sensor drive current; PG signal triggers firmware recalibration if rail drops below 2.7 V. | Use Scenario: Battery-operated infrared or optical tissue scanners used in point-of-care diagnostics. IC Role / Device Role / Timing Role: Stable 3-V rail for precision analog front-end and low-power ARM Cortex-M0+ MCU. Use Value: Adaptive mode switching maintains >85% efficiency from 3.4 V (fresh) to 2.0 V (end-of-life), extending usable battery life by ≥18%. |
| Industrial Handheld Terminals | Backup-Battery Boost Converters |
Use Scenario: Ruggedized barcode scanners and RFID readers deployed in warehouse environments with NiMH rechargeable packs. IC Role / Device Role / Timing Role: Main 3-V supply enabling USB-to-serial bridge, CMOS imager, and flash memory programming. Use Value: 0.05-µA shutdown current preserves backup coin cell charge during extended storage; ENABLE pin allows host MCU to power-cycle peripherals. | Use Scenario: SRAM retention or real-time clock (RTC) backup circuits requiring clean 3-V boost from depleted main battery. IC Role / Device Role / Timing Role: Low-quiescent boost converter activated only during main supply brownout. Use Value: Undervoltage lockout (1.6 V) prevents operation below safe battery voltage; PG output signals valid backup rail to system supervisor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60121PWP | Identical 3.3-V output (±4%), same PWP package and pinout; shares PG function but targets 3.3-V systems | Used where 3.3-V logic or I/O interfaces dominate; not suitable for 3.0-V-only loads | Select TPS60121PWP only when system requires 3.3-V rail; TPS60125PWP is mandatory for strict 3.0-V compliance. |
| MAX680ESA+ | Fixed 3.0-V output, 100-mA max, SO-8 package, no PG output, higher 120-µA IQ | Lacks power supervision and load isolation; limited to low-current auxiliary rails | Choose MAX680ESA+ only for space-constrained designs accepting lower current and no PG monitoring. |
Compared with TPS60121PWP and MAX680ESA+, the TPS60125PWP uniquely combines 200-mA 3.0-V regulation, integrated PG signaling, and sub-0.1-µA shutdown-enabling robust, self-monitoring power in compact medical and industrial handhelds.
Availability
TPS60125PWP is available at Aetrix Electronics and suitable for glucose meters, handheld medical scanners, industrial handheld terminals, and backup-battery boost converters requiring stable component supply with long-term manufacturability and consistent parametric performance.
Supply support for TPS60125PWP 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TPS6012x family was designed specifically for space-constrained, battery-powered portable instrumentation-delivering regulated, inductorless DC/DC conversion with integrated supervision for medical, test, and consumer handheld devices.
FAQ
What output voltage does the TPS60125PWP regulate, and how tight is its tolerance?
The TPS60125PWP regulates a nominal 3.0-V output with a guaranteed tolerance of ±4% over temperature and load. This corresponds to a 2.88–3.12-V range at 2–3.3 V input and 0–200 mA load, verified per SLVS257B electrical characteristics table. The internal 1.21-V reference and fixed feedback ratio ensure this accuracy without external components.
Does the TPS60125PWP include power-good monitoring, and how is it implemented?
Yes, the TPS60125PWP features an integrated power-good (PG) output on pin 17. It is an open-drain signal that pulls low when the regulated output falls below 90% of nominal (i.e., <2.7 V). A 100-kΩ–1-MΩ pullup resistor to OUT is required. PG remains high-impedance during shutdown and is invalid for the first 500 µs after startup.
How many external components does the TPS60125PWP require, and what types are specified?
The TPS60125PWP requires exactly four external ceramic capacitors: one 10-µF input capacitor (Ci), two 2.2-µF flying capacitors (C1, C2), and one 22-µF output capacitor (Co). All must be X7R dielectric with low ESR (<0.1 Ω); no inductors, diodes, or resistors are needed for basic operation.
What is the maximum continuous output current of the TPS60125PWP, and under what conditions is it guaranteed?
The TPS60125PWP delivers up to 200 mA of continuous output current when operating from a 2.0–3.3 V input at TJ ≤ 125°C. This rating is confirmed in the "recommended operating conditions" and "electrical characteristics" tables of SLVS257B, with derating applied above 70°C ambient per the PWP dissipation curve.
How does the TPS60125PWP manage efficiency across varying input voltages from a two-cell battery?
The TPS60125PWP uses adaptive mode switching: it operates in 2× voltage-doubling mode below ~2.4 V input and switches to 1.5× mode above that threshold. This dynamic selection-governed by internal control logic comparing flying capacitor voltage to VI-maintains peak efficiency (>85%) across the full 1.8–3.6 V input range without user intervention.
TPS60125PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 200mA
- Frequency - Switching:
- 320kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS60125PWP FAQ
1.How can I place an order for TPS60125PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60125PWP 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 TPS60125PWP reliable?
The price and inventory of TPS60125PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60125PWP is usually 5 days.
3.What payment methods are accepted for TPS60125PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60125PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60125PWP?
TPS60125PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60125PWP 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 TPS60125PWP?
For technical support, including TPS60125PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60125PWP requirements.
6.How does Aetrix verify that TPS60125PWP is sourced from the original manufacturer or authorized distributors?
All TPS60125PWP 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 TPS60125PWP meets industry standards.
7.What is the process for return or replacement of TPS60125PWP?
All TPS60125PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS60125PWP, 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 TPS60125PWP part is unused and in its original packaging.
Return procedure for TPS60125PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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