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Texas Instruments TPS6734IPG4
- Part No.:
- TPS6734IPG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TPS6734IPG4.pdf
- Description:
- IC REG BOOST 12.12V 150MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,921
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Product details
Overview
TPS6734IPG4 from Texas Instruments is a fixed-output 12-V, 120-mA boost converter IC with 170-kHz current-mode PWM control, integrated 0.7-Ω n-channel MOSFET power switch, and enable input for shutdown. It operates from 2.7 V to 12 V input, delivers ≥120 mA at ≥3.75 V input, and achieves 86% typical efficiency at 5-V input/120-mA load. It is used in flash memory programming supplies requiring stable 12-V generation from low-voltage battery sources.
For engineers reviewing the TPS6734IPG4 datasheet, TPS6734IPG4 pinout, TPS6734IPG4 application, or TPS6734IPG4 equivalent, key selection criteria include its 3-µA shutdown current, 1.22-V reference output (100 µA sink/source), soft-start capacitor programmability, 8-pin SOIC/DIP package compatibility, and pin-for-pin equivalence with MAX734 for drop-in replacement in legacy designs.
Technical Context
The TPS6734IPG4 implements a current-mode PWM architecture with a 170-kHz oscillator, slope-compensated current sensing, and an internal 1.22-V reference routed to REF pin. Its gate drive is bootstrapped from the 12-V output post-startup to optimize efficiency below 5 V.
It features cycle-by-cycle overcurrent protection (1.5-A peak limit), soft-start clamping via external SS capacitor, and error-amplifier-based voltage regulation using FB feedback. The COMP pin enables loop compensation with a 0.001-µF capacitor to FB, stabilizing transient response across load and line variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 12 V ±3.3% (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, 3.3-V logic rails, and 5-V USB-powered systems. |
| Max output current | 120 mA minimum at ≥3.75 V input; up to 150 mA at 3.0 V per Figure 7. |
| Shutdown supply current | 3 µA maximum - enables ultra-low-power retention in battery-backed flash programming circuits. |
| Oscillator frequency | 170 kHz fixed - determines switching period, inductor sizing, and EMI profile. |
| Reference voltage | 1.22 V ±1.6% (6.7 ppm/°C drift) - provides precision feedback and external biasing capability. |
| Power switch RDS(on) | 0.7 Ω - defines conduction loss and thermal dissipation under full load. |
| Enable threshold | 2 V high-level / 0.4 V low-level - compatible with TTL and CMOS logic interfaces. |
Pinout & Package
TPS6734IPG4 is packaged in an 8-pin plastic DIP (P package), JEDEC MS-001 compliant, with 0.300-inch wide body and through-hole mounting. Pin 1 is located at the left end of the top row when viewed from the top with notch or dot orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Logic-high ≥2 V activates converter; ≤0.4 V forces shutdown and reduces ICC to 3 µA. |
| REF (Pin 2) | 1.22-V reference output | Provides precision voltage source capable of sourcing/sinking up to 100 µA for external circuitry. |
| SS (Pin 3) | Soft-start timing node | External capacitor sets controlled output ramp rate; prevents inrush current during power-up. |
| COMP (Pin 4) | Loop compensation node | Connects to FB via 0.001-µF capacitor to stabilize feedback loop and prevent oscillation. |
| GND (Pin 5) | Power and signal ground | Common return path for all internal circuits and external components; critical for noise immunity. |
| OUT (Pin 6) | MOSFET drain terminal | Switching node connected to inductor and Schottky diode anode; carries pulsed high-current waveform. |
| FB (Pin 7) | Voltage feedback input | Monitors regulated output via resistive divider; internal error amplifier compares to 1.22 V reference. |
| VCC (Pin 8) | Main supply input | Accepts 2.7–12 V input; powers internal circuitry and bootstrap gate driver after startup. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-for-pin compatibility with MAX734 | Enables direct replacement in existing designs without PCB layout changes or firmware updates. |
| Only 5 external components required | Reduces BOM count and board area: inductor, Schottky diode, input/output capacitors, and SS capacitor. |
| 170-kHz current-mode PWM control | Provides inherent cycle-by-cycle current limiting and stable operation across wide input/load ranges. |
| Integrated 0.7-Ω n-channel MOSFET | Eliminates need for external high-side switch; improves efficiency and simplifies thermal design. |
| 1.22-V reference output (REF) | Supports external biasing of op-amps or ADC references without adding a separate voltage reference IC. |
| 3-µA shutdown current | Extends battery life in portable flash memory programmers and PCMCIA cards during idle periods. |
Applications
| Flash Memory Programming Supply | PCMCIA Card Power Management |
|---|---|
Use Scenario: Erase/program cycles in NOR/NAND flash devices require precise 12-V pulses while main system runs at 3.3 V or 5 V. IC Role / Device Role / Timing Role: Boost converter generating regulated 12-V rail on-demand; EN pin synchronized to flash command sequence. Use Value: Enables single-supply battery operation without dedicated high-voltage charge pump; 3-µA shutdown minimizes standby drain. |
Use Scenario: PCMCIA Type II card requires +12 V for certain legacy peripherals (e.g., modems, SRAM expansion) alongside +3.3 V and +5 V rails. IC Role / Device Role / Timing Role: Standby-enabled 12-V generator activated only when card slot detects compatible device insertion. Use Value: Eliminates always-on 12-V LDO; reduces total card power consumption by >99% during inactive states. |
| Battery-Powered Op-Amp Biasing | Low-Voltage Microcontroller Peripherals |
Use Scenario: Rail-to-rail op-amps in portable test equipment need ±12 V supplies derived from 3.7-V Li-ion battery. IC Role / Device Role / Timing Role: Positive 12-V stage in split-rail DC/DC solution; paired with inverting buck-boost for negative rail. Use Value: Delivers clean, regulated 12 V with <50 mVpp ripple (with proper ESR capacitor); REF pin provides stable bias reference. |
Use Scenario: MCU-based sensor nodes require 12-V pulses for EEPROM write/erase or piezoelectric actuator drive. IC Role / Device Role / Timing Role: On-demand high-voltage pulse generator triggered by GPIO; soft-start prevents MCU brownout during activation. Use Value: Integrates voltage generation, enable control, and reference in one 8-pin DIP; avoids discrete charge-pump complexity. |
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 output; lower 100-mA output capability. | Lacks external reference and soft-start control; less suitable for precision biasing or low-quiescent designs. | Choose MAX734CPA+ only if REF/SS functionality is unused and legacy footprint reuse is mandatory. |
| TPS61040DRVR | Adjustable output (1.8–28 V), 28-V switch, 500-kHz switching, 0.5-A capability; not pin-compatible. | Requires feedback resistor network; supports wider input (1.8–6 V) and higher output current. | Choose TPS61040DRVR for new designs needing flexibility, higher current, or tighter regulation tolerance. |
Compared with MAX734CPA+, TPS6734IPG4 offers lower shutdown current, integrated reference, and higher output current-making it superior for battery-sensitive flash programming. Against TPS61040DRVR, it trades adjustability and current headroom for simpler implementation and guaranteed 12-V accuracy without external resistors.
Availability
TPS6734IPG4 is available at Aetrix Electronics and suitable for flash memory programming supplies, PCMCIA card power management, and battery-powered op-amp biasing requiring stable component supply with long-term industrial lifecycle support.
Supply support for TPS6734IPG4 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 over 50 years of innovation in power conversion ICs.
The TPS6734 product line was designed specifically for compact, low-quiescent, fixed-output boost conversion in portable memory and interface applications - emphasizing pin compatibility, minimal external components, and robust operation across battery voltage ranges.
FAQ
What is the maximum output current capability of the TPS6734IPG4 at 3.75-V input?
The TPS6734IPG4 delivers a minimum of 120 mA at input voltages ≥3.75 V, as specified in the datasheet's performance characteristics table. At 3.0-V input, it supports up to 150 mA under typical conditions (Figure 7). Output current is limited by thermal dissipation and internal MOSFET RDS(on); derating applies above 70°C ambient.
Does the TPS6734IPG4 provide an external reference voltage, and what is its accuracy?
Yes, the TPS6734IPG4 provides a 1.22-V reference on Pin 2 (REF), accurate to ±1.6% over temperature with 6.7 ppm/°C drift. It can source or sink up to 100 µA, making it suitable for biasing external comparators, ADC references, or op-amp circuits without adding a discrete voltage reference IC.
How does the soft-start function work on the TPS6734IPG4, and what capacitor value is recommended?
The TPS6734IPG4 uses Pin 3 (SS) for soft-start: an external capacitor between SS and GND controls the output voltage ramp rate. For a typical 5-V input, a 0.1-µF capacitor yields ~37 ms start-up time (Table 1). Omitting the capacitor disables soft-start, enabling fastest possible turn-on - useful in flash erase cycles where timing is critical.
Is the TPS6734IPG4 pin-compatible with the MAX734, and are there functional differences?
Yes, the TPS6734IPG4 is explicitly documented as pin-for-pin compatible with the MAX734 regulator. Key functional improvements include lower 3-µA shutdown current (vs. 10 µA), wider 2.7–12 V input range (vs. 3.0–12 V), and higher 120-mA output current (vs. 100 mA), along with added REF and SS pins for enhanced system integration.
What package type and RoHS status does the TPS6734IPG4 use?
The TPS6734IPG4 is supplied in an 8-pin plastic DIP (P package), JEDEC MS-001 compliant, with lead finish NIPDAU and RoHS-compliant materials. It is rated for –40°C to +85°C operation and carries TI's standard warranty. No MSL rating applies due to its through-hole packaging.
TPS6734IPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TPS6734IPG4 FAQ
1.How can I place an order for TPS6734IPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS6734IPG4 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 TPS6734IPG4 reliable?
The price and inventory of TPS6734IPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS6734IPG4 is usually 5 days.
3.What payment methods are accepted for TPS6734IPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS6734IPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS6734IPG4?
TPS6734IPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS6734IPG4 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 TPS6734IPG4?
For technical support, including TPS6734IPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS6734IPG4 requirements.
6.How does Aetrix verify that TPS6734IPG4 is sourced from the original manufacturer or authorized distributors?
All TPS6734IPG4 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 TPS6734IPG4 meets industry standards.
7.What is the process for return or replacement of TPS6734IPG4?
All TPS6734IPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS6734IPG4, 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 TPS6734IPG4 part is unused and in its original packaging.
Return procedure for TPS6734IPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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