My Inquiry
My Account
Texas Instruments TPS60503DGS
- Part No.:
- TPS60503DGS
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS60503DGS.pdf
- Description:
- IC REG CHARGE PUMP 1.5V 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,247
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS60503DGS from Texas Instruments is a fixed-output 1.5-V, high-efficiency step-down charge pump DC-DC converter optimized for space-constrained battery-powered systems. It delivers up to 250 mA output current with ≤4% output voltage tolerance over line, load, and temperature, operates from 1.8 V to 6.5 V input, and integrates power-good supervision and thermal/overcurrent protection. It serves as a compact, capacitor-based alternative to inductor-based buck regulators in portable instrumentation and USB-powered peripherals.
For engineers reviewing the TPS60503DGS datasheet, TPS60503DGS pinout, TPS60503DGS application, or TPS60503DGS equivalent, key selection criteria include minimum input voltage (≥2.5 V at 150 mA), 10-pin VSSOP package footprint, 90% peak efficiency, soft-start behavior, and compatibility with standard 1-µF ceramic flying capacitors - all critical for low-noise, low-profile Li-ion–fed subsystems.
Technical Context
The TPS60503DGS implements fractional switched-capacitor conversion using two flying capacitors (C1F, C2F) and automatic mode selection among LDO, 2/3×, 0.5×, and 1/3× topologies based on VIN/VOUT ratio and load. Regulation is achieved via internal error amplifier feedback to the FB pin, which is directly connected to OUT for fixed-voltage variants.
It features an open-drain PG output that asserts high when OUT reaches ≥97% of 1.5 V nominal, integrated thermal shutdown at 150°C, and <40 µA quiescent current. EN control enables full input-to-load isolation during shutdown, reducing system standby leakage to sub-µA levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±4% over −40°C to +125°C, line, and load - ensures stable core supply for low-voltage logic without external resistor divider. |
| Max Output Current | 250 mA continuous - supports moderate-power digital ICs (e.g., DSPs, microcontrollers) without external boost stages. |
| Input Voltage Range | 1.8 V to 6.5 V - compatible with single-cell Li-ion (2.7–4.2 V), NiMH, or USB 5-V rails with headroom margin. |
| Peak Efficiency | 90% at 150 mA and VIN = 3.3 V - minimizes heat generation and extends battery runtime in portable devices. |
| Quiescent Current | 40 µA typical (no load) - preserves battery shelf life during extended sleep modes. |
| Switching Frequency | 600–1200 kHz - enables use of small 1-µF ceramic flying capacitors and reduces EMI compared to lower-frequency charge pumps. |
| Power-Good Threshold | 97% of 1.5 V (≈1.455 V) - provides reliable system reset signaling before processor initialization. |
Pinout & Package
TPS60503DGS is housed in a 10-pin VSSOP package (3.05 mm × 4.98 mm, 0.5-mm pitch), optimized for high-density PCB layouts in handheld and wearable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-low logic control: drives high to disable device and isolate load from input; draws ≤0.1 µA leakage in shutdown. |
| PG (Pin 2) | Open-drain power-good output | Asserts high when OUT ≥1.455 V; requires external pullup to VIN or OUT for system monitoring/reset sequencing. |
| C2F− (Pin 3) | Flying capacitor C2F negative terminal | Connects to ground side of second flying capacitor; part of 2-phase charge transfer network. |
| C2F+ (Pin 4) | Flying capacitor C2F positive terminal | Connects to switching node for C2F; works with C1F to enable 0.5× and 1/3× conversion modes. |
| VIN (Pin 5) | Main input supply | Accepts 1.8–6.5 V; requires 2.2-µF ceramic input capacitor (Ci) close to pin for stability and ripple suppression. |
| C1F+ (Pin 6) | Flying capacitor C1F positive terminal | Primary switching node for first flying capacitor; critical for 2/3× and LDO mode operation. |
| OUT (Pin 7) | Regulated 1.5-V output | Delivers up to 250 mA; bypassed with ≥10-µF ceramic capacitor (Co) to meet ripple and transient response specs. |
| C1F− (Pin 8) | Flying capacitor C1F negative terminal | Ground reference for C1F; shared with C2F− in some configurations to reduce component count. |
| GND (Pin 9) | Power ground | Common return path for input, output, and flying capacitors; must be low-impedance and thermally coupled to PCB copper. |
| FB (Pin 10) | Feedback input | Internally tied to OUT for fixed 1.5-V operation; not used for external divider - simplifies layout vs adjustable versions. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic multi-mode conversion | Selects LDO, 2/3×, 0.5×, or 1/3× topology dynamically to maintain >85% efficiency across 1.8–6.5 V input range and 0–250 mA load. |
| Integrated power-good supervisor | Open-drain PG output with 100–200 µs delay on ramp-up and 50–100 µs delay on ramp-down - enables precise power sequencing in multi-rail systems. |
| Thermal and overcurrent protection | Shuts down at 150°C junction temperature and limits short-circuit current to 300 mA - prevents damage during fault conditions without external circuitry. |
| Load isolation in shutdown | EN = high disconnects OUT from VIN and reduces load leakage to <1 µA - extends battery shelf life in always-on portable devices. |
| Low-noise capacitor-based design | Eliminates magnetic components; achieves <30 mVPP ripple at 150 mA with 10-µF Co - suitable for noise-sensitive analog and RF subsystems. |
Applications
| Portable Medical Sensors | USB-Powered Test Equipment |
|---|---|
|
Use Scenario: Compact blood glucose meter powered by single Li-ion cell (3.0–4.2 V), requiring clean 1.5-V supply for precision ADC and low-power MCU. IC Role / Device Role / Timing Role: Primary regulated DC-DC converter generating stable 1.5-V rail; replaces inductor-based solution to reduce EMI and board area. Use Value: 90% efficiency at 50 mA extends battery life beyond 1000 measurements per charge; PG signal triggers calibration sequence only after rail stabilization. |
Use Scenario: Handheld oscilloscope module drawing power exclusively from USB 5-V port, needing isolated 1.5-V bias for front-end amplifiers. IC Role / Device Role / Timing Role: Step-down charge pump providing galvanically isolated 1.5-V output; EN controlled by host enumeration to minimize standby drain. Use Value: No inductor eliminates magnetic coupling into sensitive analog inputs; 40 µA IQ allows >1-year shelf life when disconnected from USB. |
| Wearable Fitness Tracker | Industrial Bluetooth Node |
|
Use Scenario: Ultra-thin wristband with coin-cell or micro-LiPo battery (2.5–3.6 V), powering ultra-low-power sensor hub and BLE SoC core logic. IC Role / Device Role / Timing Role: Core voltage regulator delivering 1.5-V to digital subsystem; PG output synchronizes firmware boot with rail readiness. Use Value: 10-pin VSSOP footprint fits within 8 mm² PCB area; 250 mA capability supports burst-mode sensor acquisition without brownout. |
Use Scenario: Battery-operated wireless sensor node deployed in factory environments, operating from 2.8–4.0 V LiFePO₄ cell with strict thermal limits. IC Role / Device Role / Timing Role: Efficient local regulation stage converting main battery to 1.5-V logic rail; thermal shutdown protects against enclosure overheating. Use Value: 157°C/W RθJA enables operation at 85°C ambient without derating; 1/3× mode sustains >85% efficiency even at 4.0 V → 1.5 V conversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60502DGS | Fixed 1.8-V output; requires ≥2.8 V input at 150 mA; same pinout and package. | Used where higher core voltage is needed (e.g., legacy 1.8-V I/O interfaces); less efficient at 1.5-V target loads due to larger VIN–VOUT delta. | Select TPS60502DGS only if system requires 1.8 V; avoid for 1.5-V designs due to unnecessary headroom loss and reduced efficiency. |
| MAX881RASA+ | Fixed 1.5-V output; 200 mA max; 12-pin µMAX package; no PG output; 85% peak efficiency. | Lacks power-good signaling and thermal protection; limited output current restricts use to ultra-low-power MCUs only. | Choose MAX881RASA+ only for cost-sensitive, non-safety-critical applications with <200 mA load and no sequencing requirements. |
Compared with TPS60502DGS and MAX881RASA+, the TPS60503DGS uniquely balances 250 mA capability, integrated PG supervision, and 90% efficiency - making it the optimal choice for next-generation portable instruments requiring robust, sequenced, and high-current 1.5-V regulation.
Availability
TPS60503DGS is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered test equipment, wearable fitness trackers, and industrial Bluetooth nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPS60503DGS 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 and embedded processing technologies, with decades of expertise in power management innovation.
The TPS6050x family was designed specifically for space-critical, battery-powered applications demanding high-efficiency, inductorless DC-DC conversion - targeting mobile phones, portable instruments, and USB-peripheral power rails.
FAQ
What is the minimum input voltage required for TPS60503DGS to deliver 150 mA?
The TPS60503DGS requires a minimum input voltage of 2.5 V to sustain 150 mA output current, as specified in the device comparison table and validated across temperature. Below this threshold, regulation cannot be maintained, and output voltage drops below 1.455 V, causing the PG signal to deassert. This value assumes proper 1-µF flying capacitors and 10-µF output capacitance.
Does TPS60503DGS require external feedback resistors?
No, the TPS60503DGS does not require external feedback resistors. It is a fixed 1.5-V output variant with internal resistor divider; the FB pin must be connected directly to the OUT pin per the datasheet. External resistors are only needed for the adjustable TPS60500DGS version.
How does the power-good (PG) output behave during startup and shutdown of TPS60503DGS?
During startup, the PG pin remains low until OUT reaches ≥97% of 1.5 V (≈1.455 V), then transitions high after a 100–200 µs delay. During shutdown (EN = high), PG pulls low immediately. The PG pin is open-drain and requires an external pullup resistor (typically to VIN or OUT) to function correctly in system sequencing circuits.
Can TPS60503DGS operate from a 2.4-V input source?
Yes, the TPS60503DGS can operate from 2.4 V, but only at reduced output current. At 2.4 V input, maximum supported load is approximately 50 mA (per Figure 10, "Minimum Input Voltage vs Output Current"). For full 250 mA capability, VIN must exceed 3.1 V; for 150 mA, VIN must be ≥2.5 V.
What capacitor values are mandatory for stable operation of TPS60503DGS?
For stable operation, TPS60503DGS requires: 2.2 µF ceramic input capacitor (Ci), two 1-µF ceramic flying capacitors (C1F, C2F), and ≥10 µF ceramic output capacitor (Co) for ≤150 mA loads. For 250 mA operation, Co must be ≥22 µF (e.g., two parallel 10-µF capacitors). All capacitors must be X5R/X7R dielectric with low ESR.
TPS60503DGS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 250mA
- Frequency - Switching:
- 800kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS60503DGS FAQ
1.How can I place an order for TPS60503DGS through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS60503DGS 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 TPS60503DGS reliable?
The price and inventory of TPS60503DGS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS60503DGS is usually 5 days.
3.What payment methods are accepted for TPS60503DGS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS60503DGS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS60503DGS?
TPS60503DGS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS60503DGS 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 TPS60503DGS?
For technical support, including TPS60503DGS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS60503DGS requirements.
6.How does Aetrix verify that TPS60503DGS is sourced from the original manufacturer or authorized distributors?
All TPS60503DGS 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 TPS60503DGS meets industry standards.
7.What is the process for return or replacement of TPS60503DGS?
All TPS60503DGS units undergo pre-shipment inspection (PSI). If there is an issue with TPS60503DGS, 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 TPS60503DGS part is unused and in its original packaging.
Return procedure for TPS60503DGS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS60503DGS Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
