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Texas Instruments TPS76733QPWP
- Part No.:
- TPS76733QPWP
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS76733QPWP.pdf
- Description:
- IC REG LINEAR 3.3V 1A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:402
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Product details
Overview
TPS76733QPWP from Texas Instruments is a 3.3-V fixed-output, 1-A low-dropout linear regulator with PMOS pass element, 350-mV dropout at 1 A (25°C), 85-µA typical quiescent current, and open-drain power-on reset with 200-ms delay-designed for stable 3.3-V supply in battery-powered microcontroller systems.
For engineers reviewing the TPS76733QPWP datasheet, TPS76733QPWP pinout, TPS76733QPWP application, or TPS76733QPWP equivalent, key selection criteria include dropout voltage over temperature, RESET threshold hysteresis (0.5 V), thermal shutdown at 150°C, and compatibility with 10-µF low-ESR output capacitors.
Technical Context
The TPS76733QPWP uses a voltage-driven PMOS pass transistor to achieve load-independent quiescent current (85 µA typ) and low dropout (350 mV at 1 A, 25°C). Its internal 1.1834-V reference feeds a high-impedance feedback amplifier, enabling stable regulation with 10-µF ceramic output capacitors.
A dedicated comparator monitors regulated output voltage and asserts open-drain RESET when VO drops to 92–98% of nominal (3.2346–3.366 V), with 200-ms timeout delay. Thermal shutdown activates at 150°C, and current limiting caps output at ~1.7 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2% over line, load, and −40°C to 125°C - ensures reliable 3.3-V logic supply across industrial temperature range. |
| Dropout Voltage | 350 mV at 1 A (25°C); 575 mV max (−40°C to 125°C) - enables operation with input as low as 3.65 V at full load. |
| Quiescent Current | 85 µA typical (0–1 A load); 125 µA max (−40°C to 125°C) - extends battery life in always-on portable systems. |
| RESET Threshold | 92–98% of VO (3.2346–3.366 V), 0.5-V hysteresis - provides clean, noise-immune power-on reset signaling. |
| Thermal Shutdown | 150°C junction activation, 130°C recovery - protects against sustained overload or poor PCB heatsinking. |
| Output Capacitor | 10 µF minimum, ESR 50 mΩ–1.5 Ω - supports stability with common solid tantalum, aluminum, or multilayer ceramic caps. |
| Enable Input | Logic-compatible: VIH ≥1.7 V, VIL ≤0.9 V - allows direct interfacing with 3.3-V or 5-V microcontroller GPIOs. |
Pinout & Package
TPS76733QPWP is housed in a 20-pin HTSSOP PowerPAD™ (PWP) package (6.50 mm × 4.40 mm) with exposed thermal pad for enhanced heat dissipation. GND/HSINK pins (1, 2, 9, 10, 11, 12, 19, 20) provide both electrical ground return and thermal conduction path to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND/HSINK (1, 2, 9, 10, 11, 12, 19, 20) | Ground reference & thermal sink | Must be soldered to large PCB copper pour to maintain RθJB = 8.7°C/W and prevent thermal shutdown under 1-A load. |
| EN (5) | Active-low enable control | Pull low to disable regulator; draws ≤1 µA in shutdown - enables system-level power sequencing and ultra-low standby current. |
| IN (6, 7) | Input voltage supply | Dual pins reduce trace resistance and IR drop; accepts 2.7–10 V input - supports wide-input battery or DC-DC pre-regulator sources. |
| OUT (13, 14) | Regulated 3.3-V output | Dual pins lower output impedance; requires 10-µF output capacitor with ESR <1.5 Ω for loop stability. |
| RESET (16) | Open-drain reset indicator | Sinks 300 µA at valid trip; requires external pullup - signals undervoltage condition to MCU reset pin or supervisor IC. |
| FB/NC (15) | Feedback input / no-connect | No-connect for fixed 3.3-V version; left unconnected - avoids noise coupling into high-impedance feedback node. |
| NC (4, 8, 17, 18) | No internal connection | Not bonded; must remain unconnected - prevents unintended parasitic paths or EMI coupling. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS pass transistor architecture | Enables 85-µA quiescent current independent of load - eliminates battery drain during sleep modes in portable devices. |
| Fast transient response | Stable with 10-µF low-ESR output capacitors - delivers <±100-mV output deviation during 1-A load steps (typical). |
| Integrated 200-ms power-on RESET | Asserts open-drain signal when VO falls below 92% of 3.3 V - ensures deterministic microcontroller initialization without external supervisor. |
| Thermal and current protection | Shuts down at 150°C junction temp; limits output to ~1.7 A - prevents damage during short-circuit or overload conditions. |
| Wide input voltage range | Operates from 2.7 V to 10 V - accommodates single-cell Li-ion (3.0–4.2 V), dual-cell alkaline (2.4–3.2 V), or 5-V rail inputs. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
|
Use Scenario: Powering isolated 3.3-V digital I/O channels in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary 3.3-V LDO supplying FPGA configuration memory, CAN transceiver logic, and optocoupler drivers. Use Value: 350-mV dropout enables operation from 5-V backplane even under brownout; thermal shutdown prevents field failure during ambient temperature spikes. |
Use Scenario: Regulating 3.3-V supply for microcontroller, LIN transceiver, and sensor interface circuitry in door module ECUs. IC Role / Device Role / Timing Role: System power management IC providing clean, monitored 3.3-V rail with integrated reset signaling. Use Value: RESET output directly drives MCU reset pin with 200-ms timeout - eliminates need for discrete supervisor IC and reduces BOM count. |
| Portable Medical Monitor | Wireless Sensor Node |
|
Use Scenario: Supplying 3.3-V power to ARM Cortex-M4 MCU, OLED display driver, and analog front-end in handheld vital sign monitors. IC Role / Device Role / Timing Role: Low-quiescent-current LDO delivering stable 3.3-V rail during battery discharge from 4.2 V to 3.4 V. Use Value: 85-µA quiescent current extends runtime in sleep mode; fast transient response maintains display integrity during touch-interrupt bursts. |
Use Scenario: Providing regulated 3.3-V supply to sub-GHz RF SoC, temperature/humidity sensor, and flash memory in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Primary power regulator enabling deep-sleep current <10 µA via EN pin control. Use Value: Enable pin reduces quiescent current to 1 µA - achieves multi-year battery life in periodic wake-up applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76733QDR | Same electrical specs; 8-pin SOIC (D) package with RθJA = 106.9°C/W - higher thermal resistance than PWP. | Limited to ≤500 mA continuous load in still-air due to thermal constraints - unsuitable for sustained 1-A operation. | Select only if board space is constrained and thermal margin permits lower current derating. |
| TLV70733PDQNR | Lower IQ (25 µA), smaller 6-pin X2SON package, but 0.5-A max output - no RESET function or thermal shutdown. | Requires external reset supervisor and thermal monitoring - increases design complexity and component count. | Prefer for ultra-low-power, space-constrained designs where 1-A capability and integrated protection are not required. |
Compared with TPS76733QPWP, TPS76733QDR offers identical regulation performance but requires careful thermal layout to sustain 1-A loads, while TLV70733PDQNR trades off current capacity and integrated protection for ultra-low quiescent current and minimal footprint.
Availability
TPS76733QPWP is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, portable medical monitors, and wireless sensor nodes requiring stable component supply with full production traceability and long-term lifecycle support.
Supply support for TPS76733QPWP 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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 90 years of innovation in power management and signal chain solutions.
The TPS767xx family was designed specifically for battery-powered and thermally constrained applications demanding fast transient response, ultra-low quiescent current, and integrated power-good monitoring - targeting portable instrumentation, automotive subsystems, and industrial edge devices.
FAQ
What is the maximum input voltage rating for the TPS76733QPWP?
The absolute maximum input voltage for the TPS76733QPWP is 13.5 V, but recommended operating input voltage is 2.7 V to 10 V. Exceeding 10 V may trigger internal protection or degrade long-term reliability, and operation below 2.7 V risks dropout unless output current is reduced proportionally per the dropout voltage curve.
Does the TPS76733QPWP require an external pullup resistor on the RESET pin?
Yes, the TPS76733QPWP RESET pin is open-drain and requires an external pullup resistor (typically 10–100 kΩ to 3.3 V or 5 V) to generate a valid logic-high signal. Without it, RESET remains floating and cannot drive a microcontroller reset input reliably - this is explicitly required per the functional description in the datasheet.
Can the TPS76733QPWP operate without an output capacitor?
No, the TPS76733QPWP requires a minimum 10-µF output capacitor with ESR between 50 mΩ and 1.5 Ω for closed-loop stability. Omitting it causes oscillation or excessive output ripple, as confirmed by the "External Capacitor Requirements" section and stability region plots in the datasheet.
What is the thermal performance difference between the PWP and D packages of the TPS76733QPWP?
The PWP (HTSSOP-20) package has RθJA = 35.8°C/W, while the D (SOIC-8) package has RθJA = 106.9°C/W. At 1 A and 25°C ambient, junction temperature rise is ~36°C for PWP versus ~107°C for D - making the PWP package essential for sustained 1-A operation without thermal shutdown.
Is the TPS76733QPWP pin-compatible with other members of the TPS767xx family?
Yes, all TPS767xxQ variants in the PWP package share identical pinout and footprint - including TPS76715Q, TPS76718Q, TPS76725Q, TPS76728Q, TPS76730Q, TPS76733Q, TPS76750Q, and TPS76701Q - enabling voltage-scaling flexibility without PCB redesign.
TPS76733QPWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.58V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS76733QPWP FAQ
1.How can I place an order for TPS76733QPWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76733QPWP 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 TPS76733QPWP reliable?
The price and inventory of TPS76733QPWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76733QPWP is usually 5 days.
3.What payment methods are accepted for TPS76733QPWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76733QPWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76733QPWP?
TPS76733QPWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76733QPWP 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 TPS76733QPWP?
For technical support, including TPS76733QPWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76733QPWP requirements.
6.How does Aetrix verify that TPS76733QPWP is sourced from the original manufacturer or authorized distributors?
All TPS76733QPWP 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 TPS76733QPWP meets industry standards.
7.What is the process for return or replacement of TPS76733QPWP?
All TPS76733QPWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS76733QPWP, 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 TPS76733QPWP part is unused and in its original packaging.
Return procedure for TPS76733QPWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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