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Texas Instruments TPS6734IDRG4
- Part No.:
- TPS6734IDRG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS6734IDRG4.pdf
- Description:
- IC REG BOOST 12.12V 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,836
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Product details
Overview
TPS6734IDRG4 from Texas Instruments is a fixed-output 12-V, 120-mA boost converter IC with 170-kHz current-mode PWM control, 0.7-Ω internal n-channel MOSFET switch, and enable-controlled shutdown (3 µA quiescent current). It operates from 2.7 V to 12 V input and delivers regulated 12 V for flash memory programming in battery-powered PCMCIA cards and portable instrumentation.
For engineers reviewing the TPS6734IDRG4 datasheet, TPS6734IDRG4 pinout, TPS6734IDRG4 application, or TPS6734IDRG4 equivalent, key selection criteria include input voltage range (2.7–12 V), output current capability (≥120 mA at ≥3.75 V input), shutdown current (≤3 µA), soft-start control via external capacitor, and compatibility with Schottky diode + 18-µH inductor discrete power stage design.
Technical Context
The TPS6734IDRG4 implements a current-mode PWM architecture with a 170-kHz oscillator, integrated 0.7-Ω n-channel MOSFET power switch, and slope-compensated current sensing. Its error amplifier compares FB voltage against a 1.22-V internal reference, while the SS pin enables controlled output ramp-up via external capacitor.
Gate drive is bootstrapped from the 12-V output post-startup to improve efficiency below 5 V input. The device supports discontinuous, continuous, and pulse-skipping operation modes depending on load and input conditions, with overcurrent protection tripping at 1.5-A peak switch current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 12 V ±3% (11.64–12.6 V) across 0–120 mA load and 4.75–12 V input. |
| Input voltage range | 2.7 V to 12 V - supports single-cell Li-ion (3.0–4.2 V), 3.3-V/5-V rails, and legacy 9–12 V supplies. |
| Max output current | 120 mA minimum at ≥3.75 V input; up to 150 mA at 3.0 V per typical performance curves. |
| Switching frequency | 170 kHz nominal - sets EMI profile and enables compact 18-µH inductor + low-ESR capacitor design. |
| Shutdown current | 3 µA maximum - enables ultra-low-power retention during flash erase cycles or standby states. |
| Reference voltage | 1.22 V ±1% at REF pin - stable, temperature-compensated (6.7 ppm/°C) source for external bias or feedback scaling. |
| Efficiency | 86% typical at 5 V input / 120 mA output - reduces thermal load in space-constrained portable PCBs. |
Pinout & Package
TPS6734IDRG4 is packaged in an 8-pin SOIC (D package), JEDEC MS-012 compliant, with 1.27-mm pitch, tape-and-reel format (2500 pcs/reel). Pin 1 is marked by a beveled corner or dot; top-side marking reads "6734I".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Logic-high (≥2 V) activates converter; logic-low (≤0.4 V) forces 3-µA shutdown and discharges soft-start capacitor. |
| REF (Pin 2) | 1.22-V reference output | Provides precision voltage reference (100 µA sink/source capability) for external circuitry or scaled feedback networks. |
| SS (Pin 3) | Soft-start timing node | Capacitor from SS to GND controls output voltage rise time; omission enables fastest startup for flash programming. |
| COMP (Pin 4) | Loop compensation node | 0.001-µF capacitor between COMP and FB stabilizes feedback loop; connects to error amplifier output. |
| GND (Pin 5) | Power and signal ground | Common return for all internal circuits; requires low-impedance connection to PCB ground plane. |
| OUT (Pin 6) | MOSFET drain terminal | Switching node connected to inductor and Schottky diode anode; carries high di/dt pulses requiring short layout paths. |
| FB (Pin 7) | Feedback input | Connected directly to output via resistive divider; senses regulated 12 V and closes voltage control loop. |
| VCC (Pin 8) | Input supply pin | Accepts 2.7–12 V input; powers internal circuitry before bootstrap gate drive engages post-startup. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-for-pin compatibility with MAX734 | Enables drop-in replacement in existing designs without PCB revision or firmware changes. |
| Integrated 0.7-Ω n-channel MOSFET | Eliminates external high-side switch; reduces BOM count and improves efficiency at low input voltages. |
| 1.22-V precision reference (REF) | Stable, low-drift (6.7 ppm/°C) reference usable for external analog functions or auxiliary regulation. |
| Current-mode PWM control | Provides inherent cycle-by-cycle current limiting, fast transient response, and stable operation across wide input/load ranges. |
| Soft-start with external capacitor | Prevents inrush current and output overshoot during power-up; timing adjustable from ~10 ms to >400 ms. |
Applications
| Flash Memory Programming Supply | PCMCIA Card Power Management |
|---|---|
|
Use Scenario: Erase/program cycles in NOR/NAND flash devices require precise 12-V pulses with tight timing windows and minimal hold time. IC Role / Device Role / Timing Role: TPS6734IDRG4 generates regulated 12 V on-demand; EN pin synchronizes output activation with host controller commands. Use Value: 3-µA shutdown current extends battery life between erase operations; fast enable response (<10 ms) meets JEDEC timing requirements. |
Use Scenario: PCMCIA Type II cards in portable laptops need isolated 12-V supply for legacy I/O peripherals without loading main system rails. IC Role / Device Role / Timing Role: TPS6734IDRG4 acts as dedicated boost converter, enabled only when card is inserted and configured. Use Value: Input range down to 2.7 V ensures operation across full Li-ion discharge curve; 86% efficiency minimizes heat in confined card slot. |
| Battery-Powered Instrumentation | Portable Op-Amp Bias Supply |
|
Use Scenario: Handheld test equipment (e.g., DMMs, oscilloscope probes) requires clean, stable 12 V for analog front-end ICs and ADC references. IC Role / Device Role / Timing Role: TPS6734IDRG4 provides low-noise, regulated rail decoupled from noisy digital sections via separate LDO or LC filtering. Use Value: REF pin supplies 1.22 V reference to external DACs or sensors; low 3-µA shutdown preserves battery during idle periods. |
Use Scenario: Rail-to-rail op-amps in portable audio or sensor signal chains need symmetric ±12 V supplies derived from single-ended battery sources. IC Role / Device Role / Timing Role: TPS6734IDRG4 generates +12 V; paired with inverting buck-boost or charge-pump for –12 V generation. Use Value: 120-mA output supports multiple op-amps; 170-kHz switching allows small passive components and avoids audible noise bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX734CPA+ | Pin-compatible but higher 10-µA shutdown current; no REF pin; lower max output current (100 mA). | Lacks 1.22-V reference output and soft-start control; less suitable for precision analog or low-power flash systems. | Choose MAX734CPA+ only if REF/SS features are unused and legacy footprint reuse is critical. |
| TPS61040DRVR | Adjustable output (1.8–28 V); 28-V internal switch; 0.5-A switch current; 500-kHz switching; no REF pin. | Requires external feedback resistors; higher switching frequency demands tighter layout; no integrated reference for auxiliary use. | Choose TPS61040DRVR when variable output or higher current is needed; not a direct functional substitute for fixed 12-V REF/SS use cases. |
Compared with MAX734CPA+, TPS6734IDRG4 offers lower shutdown current, a usable reference output, and soft-start control-critical for flash programming reliability. Versus TPS61040DRVR, it trades adjustability for simplicity, lower EMI, and built-in analog resources ideal for dedicated 12-V subsystems.
Availability
TPS6734IDRG4 is available at Aetrix Electronics and suitable for flash memory programming supplies, PCMCIA card power management, and battery-powered instrumentation requiring stable component supply with long-term industrial lifecycle support.
Supply support for TPS6734IDRG4 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 with decades of high-reliability product development.
The TPS6734IDRG4 belongs to TI's legacy power management portfolio designed specifically for low-power, fixed-output boost conversion in portable and memory-intensive applications.
FAQ
What is the input voltage range supported by the TPS6734IDRG4?
The TPS6734IDRG4 supports an input voltage range of 2.7 V to 12 V. It delivers full 120-mA output current from inputs ≥3.75 V, and maintains regulation down to 2.7 V with reduced output capability. This range accommodates single-cell Li-ion batteries, 3.3-V/5-V system rails, and legacy 9–12 V supplies - making the TPS6734IDRG4 suitable for diverse portable and industrial applications.
Does the TPS6734IDRG4 include an internal power switch, and what is its on-resistance?
Yes, the TPS6734IDRG4 integrates a 0.7-Ω n-channel MOSFET power switch at the OUT pin. This low RDS(on) minimizes conduction losses and improves efficiency-especially at input voltages below 5 V-eliminating the need for an external high-side switch and reducing bill-of-materials complexity. The TPS6734IDRG4 uses this switch in a current-mode boost topology with cycle-by-cycle current limiting.
How does the enable (EN) pin function on the TPS6734IDRG4?
The EN pin on the TPS6734IDRG4 provides logic-level control: applying ≥2 V enables the converter, while ≤0.4 V places it in shutdown mode with ≤3 µA supply current. During shutdown, the internal reference, oscillator, and power switch are disabled, and the soft-start capacitor is actively discharged. This feature enables precise power gating in flash memory erase cycles and other event-driven 12-V supply applications using the TPS6734IDRG4.
Can the TPS6734IDRG4 generate a stable reference voltage for external circuitry?
Yes, the TPS6734IDRG4 provides a buffered 1.22-V reference at the REF pin, capable of sourcing/sinking up to 100 µA with 6.7 ppm/°C drift over –40°C to 85°C. This precision reference is brought out explicitly for external use-such as biasing sensors, calibrating ADCs, or setting auxiliary regulator thresholds-without requiring additional voltage references. Its stability and low noise make it valuable in analog-intensive designs using the TPS6734IDRG4.
What external components are required to implement a working TPS6734IDRG4 boost converter?
A functional TPS6734IDRG4 boost converter requires only five external components: an inductor (18 µH typical), a Schottky diode (≥300 mA rating), an output filter capacitor (33 µF tantalum, low-ESR), an input filter capacitor (≥10 µF ceramic), and a compensation capacitor (0.001 µF between COMP and FB). Optional components include a soft-start capacitor (SS-to-GND) and REF decoupling (0.01–0.1 µF). This minimal BOM simplifies layout and reduces cost in designs using the TPS6734IDRG4.
TPS6734IDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 12.12V
- Voltage - Output (Max):
- -
- Current - Output:
- 150mA
- Frequency - Switching:
- 170kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS6734IDRG4 FAQ
1.How can I place an order for TPS6734IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS6734IDRG4 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 TPS6734IDRG4 reliable?
The price and inventory of TPS6734IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS6734IDRG4 is usually 5 days.
3.What payment methods are accepted for TPS6734IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS6734IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS6734IDRG4?
TPS6734IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS6734IDRG4 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 TPS6734IDRG4?
For technical support, including TPS6734IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS6734IDRG4 requirements.
6.How does Aetrix verify that TPS6734IDRG4 is sourced from the original manufacturer or authorized distributors?
All TPS6734IDRG4 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 TPS6734IDRG4 meets industry standards.
7.What is the process for return or replacement of TPS6734IDRG4?
All TPS6734IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS6734IDRG4, 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 TPS6734IDRG4 part is unused and in its original packaging.
Return procedure for TPS6734IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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