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Texas Instruments TPS6734ID
- Part No.:
- TPS6734ID
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS6734ID.pdf
- Description:
- IC REG BOOST 12.12V 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,516
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Product details
Overview
TPS6734ID 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-designed for flash memory programming supplies in battery-powered PCMCIA cards.
For engineers reviewing the TPS6734ID datasheet, TPS6734ID pinout, TPS6734ID application, or TPS6734ID equivalent, key selection criteria include its 3-µA shutdown current, 1.22-V reference output (100 µA sink/source), soft-start terminal for controlled voltage ramp-up, and compatibility with minimal external component count (5 total) in space-constrained portable systems.
Technical Context
The TPS6734ID implements a current-mode PWM architecture with a 170-kHz oscillator and slope-compensated current sensing. Its gate drive is bootstrapped from the 12-V output post-startup to optimize efficiency below 5-V input, and it includes an internal 1.22-V reference brought out on REF for external biasing or monitoring.
Control logic integrates EN-driven shutdown (≤0.4 V disables; ≥2 V enables), SS-clamped error amplifier for soft-start, and overcurrent protection that triggers at 1.5-A peak switch current. The device supports both discontinuous and continuous conduction modes depending on load and input voltage, with pulse-skipping at light loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 12 V ±3.5% (11.64–12.6 V) across 0–120 mA load and 4.75–12 V input-enables stable programming voltage for NOR/NAND flash erase cycles. |
| Input voltage range | 2.7 V to 12 V-supports single-cell Li-ion (3.0–4.2 V), 3.3-V logic rails, and 5-V USB-derived inputs without pre-regulation. |
| Max output current | 120 mA minimum at ≥3.75 V input; up to 150 mA at 3.0 V input-sufficient for standard 12-V flash programming pulses (e.g., 100 ms @ 100 mA). |
| Shutdown supply current | 3 µA maximum-reduces system quiescent drain during idle periods in portable memory cards and handheld instruments. |
| Oscillator frequency | 170 kHz nominal-fixed switching frequency simplifies EMI filtering and allows compact 18-µH inductor selection. |
| Reference voltage | 1.22 V ±1.6% (6.7 ppm/°C drift)-provides precision feedback node or external bias source for auxiliary circuitry. |
| Power switch RDS(on) | 0.7 Ω typical-minimizes conduction loss in boost diode path and improves efficiency at low input voltages. |
Pinout & Package
TPS6734ID is housed in an 8-pin SOIC (D) package per JEDEC MS-012, with 1.27-mm lead pitch, 3.91-mm body width, and RoHS-compliant NiPdAu lead finish (MSL Level-1). Thermal dissipation rating is 725 mW at 25°C, derating to 377 mW at 85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Logic-level interface: ≥2 V enables operation; ≤0.4 V forces shutdown with 3-µA supply current and soft-start capacitor discharge. |
| REF (Pin 2) | 1.22-V reference output | Stable voltage source capable of sourcing/sinking 100 µA-used for external biasing, precision comparators, or feedback scaling. |
| SS (Pin 3) | Soft-start timing node | Capacitor-to-ground sets output voltage rise time; prevents inrush current during power-up in flash programming applications. |
| COMP (Pin 4) | Compensation network connection | Connects to FB via 0.001-µF capacitor to stabilize feedback loop-critical for maintaining regulation under dynamic load steps. |
| GND (Pin 5) | Power and signal ground reference | Common return for all internal circuits; requires low-impedance PCB ground plane to minimize noise coupling into sensitive analog blocks. |
| OUT (Pin 6) | N-channel MOSFET drain terminal | Switching node connecting to external Schottky diode anode; carries high-frequency pulsed current-must be routed with minimal loop area. |
| FB (Pin 7) | Feedback voltage input | Monitors regulated output via resistive divider; internal error amplifier compares to 1.22-V reference to maintain 12-V regulation. |
| VCC (Pin 8) | Main supply input | Accepts 2.7–12 V input; powers internal circuitry and bootstraps gate driver after startup-requires local 0.1-µF ceramic bypass. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-for-pin compatibility with MAX734 | Direct replacement in legacy designs without PCB revision-retains identical footprint, pin functions, and external component values. |
| Only 5 external components required | Reduces BOM count and board area: 18-µH inductor, Schottky diode, 33-µF output cap, input filter cap, and 0.001-µF compensation cap. |
| High efficiency at low input voltages | 86% typical at 5-V input/120-mA load-enabled by bootstrapped gate drive and low RDS(on), extending battery life in 3.3/5-V portable systems. |
| Integrated 1.22-V reference with 100 µA drive | Eliminates need for external reference IC in multi-rail systems-supports biasing of op-amps, ADC references, or level-shift circuits. |
| 170-kHz fixed-frequency PWM control | Predictable EMI profile and simplified filter design-avoids variable-frequency artifacts seen in hysteretic converters. |
Applications
| Flash Memory Programming Supply | PCMCIA Card Power Management |
|---|---|
Use Scenario: Erase/program cycles in NOR/NAND flash devices requiring precise 12-V pulses for 10–100 ms duration. IC Role / Device Role / Timing Role: Primary high-efficiency DC-DC boost converter generating regulated 12-V rail from 3.3-V or 5-V host bus. Use Value: Enables reliable flash programming in battery-powered devices with <3-µA shutdown current preserving runtime between operations. |
Use Scenario: Providing isolated 12-V programming voltage in Type II PCMCIA cards compliant with JEIDA standards. IC Role / Device Role / Timing Role: Standby-enabled boost regulator synchronized to card insertion detection and host command signals. Use Value: Meets PCMCIA slot power budget constraints while delivering >120 mA peak current within <0.7 in² PCB area. |
| Battery-Powered Op-Amp Bias Supply | Low-Power Instrumentation Reference Rail |
Use Scenario: Generating clean ±12-V dual rails for rail-to-rail op-amps in portable data loggers and sensor interfaces. IC Role / Device Role / Timing Role: Positive 12-V source paired with inverting charge-pump IC to create symmetric supply from single Li-ion cell. Use Value: Delivers stable 12-V output with <0.0042% load regulation-critical for precision gain-setting and offset calibration. |
Use Scenario: Providing stable 12-V reference for ADC drivers, DAC buffers, and analog front-end conditioning in handheld test equipment. IC Role / Device Role / Timing Role: Low-noise, low-drift auxiliary supply decoupled from main system rail using REF output and 0.01-µF capacitor. Use Value: 6.7 ppm/°C reference drift and 1.22-V accuracy ensure measurement repeatability across –40°C to 85°C operating range. |
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 15-µA shutdown current; no REF output; lower 100-mA output capability at 3.75-V input. | Lacks integrated reference and soft-start-requires external components for precision biasing or inrush control. | Select when legacy MAX734 footprint must be retained and REF/SS features are unnecessary. |
| TPS61040DRVR | Adjustable output (1.8–28 V); 28-V absolute max input; 0.5-A switch; 500-kHz switching; no REF output. | Supports wider input/output ranges but requires external feedback resistors and lacks 1.22-V reference for auxiliary use. | Select when programmable output voltage or higher current (>120 mA) is required, accepting added design complexity. |
Compared with MAX734CPA+ and TPS61040DRVR, the TPS6734ID provides unique integration of fixed 12-V output, 3-µA shutdown, and a buffered 1.22-V reference-making it optimal for flash programming where simplicity, low quiescent current, and auxiliary biasing coexist.
Availability
TPS6734ID 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 guaranteed long-term continuity.
Supply support for TPS6734ID 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 energy-efficient power conversion.
The TPS6734ID belongs to TI's legacy boost converter product line designed specifically for low-power, fixed-output voltage generation in portable memory and interface applications-emphasizing minimal external components and ultra-low shutdown current.
FAQ
What is the minimum input voltage required for the TPS6734ID to deliver full 120 mA output current?
The TPS6734ID requires a minimum input voltage of 3.75 V to sustain 120 mA output current while maintaining regulation. At 3.0 V input, it can still deliver up to 150 mA under typical conditions, as confirmed in the performance characteristics table. Below 3.75 V, output current capability decreases progressively due to reduced headroom across the internal 0.7-Ω MOSFET and external diode.
Does the TPS6734ID support adjustable output voltage, or is it strictly fixed at 12 V?
The TPS6734ID is a fixed-output device delivering precisely 12 V (typical 12.12 V, tolerance ±3.5%). It does not support adjustable output voltage-the feedback network is internal, and the FB pin connects directly to the output for closed-loop regulation. For adjustable outputs, TI recommends alternatives like the TPS61040 series.
Can the REF pin of the TPS6734ID be used to power external circuitry, and what is its current limit?
Yes, the REF pin on the TPS6734ID provides a buffered 1.22-V reference capable of sourcing or sinking up to 100 µA. It is intended for biasing external comparators, op-amps, or ADC references. A 0.01–0.1-µF decoupling capacitor between REF and GND is recommended to suppress noise and ensure stability.
What is the purpose of the SS (soft-start) pin on the TPS6734ID, and how is it implemented?
The SS pin on the TPS6734ID controls output voltage ramp-up time during power-on or enable activation. A capacitor connected from SS to GND sets the soft-start duration-e.g., 0.1 µF yields ~37 ms at 5-V input. This limits inrush current and prevents output overshoot, especially critical in flash memory programming where abrupt voltage transitions can corrupt data.
Is the TPS6734ID compatible with both SOIC and PDIP packages, and which one does the 'D' suffix indicate?
Yes, the TPS6734ID uses the 'D' suffix to denote the 8-pin SOIC (small-outline integrated circuit) package, while 'P' indicates the PDIP (plastic dual-in-line) variant. Both share identical electrical specifications and pinout, but the SOIC (D) offers superior thermal performance (725 mW vs. 1175 mW for PDIP at 25°C) and surface-mount compatibility for high-density PCBs.
TPS6734ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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
TPS6734ID FAQ
1.How can I place an order for TPS6734ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS6734ID 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 TPS6734ID reliable?
The price and inventory of TPS6734ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS6734ID is usually 5 days.
3.What payment methods are accepted for TPS6734ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS6734ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS6734ID?
TPS6734ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS6734ID 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 TPS6734ID?
For technical support, including TPS6734ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS6734ID requirements.
6.How does Aetrix verify that TPS6734ID is sourced from the original manufacturer or authorized distributors?
All TPS6734ID 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 TPS6734ID meets industry standards.
7.What is the process for return or replacement of TPS6734ID?
All TPS6734ID units undergo pre-shipment inspection (PSI). If there is an issue with TPS6734ID, 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 TPS6734ID part is unused and in its original packaging.
Return procedure for TPS6734ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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