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Product Detailed Parameters
- Description：IC LED DRVR RGLTR 550MA SOT23-5
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：2.2V
- Voltage - Supply (Max)：7V
- Voltage - Output：20V
- Current - Output / Channel：550mA (Switch)
- Frequency：-
- Dimming：-
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The LM2704MF-ADJ is a micropower step-up DC/DC converter manufactured by Texas Instruments. It features an internal switch capable of delivering 550mA peak current with an on-resistance of 0.7Ω. The device operates within an input voltage range of 2.2V to 7V and supports adjustable output voltages up to 20V. It utilizes a small 5-lead SOT-23 surface-mount package and employs a fixed off-time control scheme to conserve operating current.
Feature Summary
- Integrates a 550mA internal power switch with low on-resistance for efficient power conversion
- Supports adjustable output voltage levels up to 20V via external feedback components
- Operates from a wide input voltage range spanning 2.2V to 7V
- Utilizes a compact 5-lead SOT-23 surface-mount package to minimize board space
Applications
- Portable battery-powered devices requiring voltage boosting
- LCD bias voltage generation circuits
- Single-cell or multi-cell alkaline/NiMH battery applications
- General-purpose step-up power supplies in space-constrained designs
Procurement Notes
Verify the complete part number including suffixes such as NOPB to ensure compliance with specific manufacturing standards. Confirm the package type matches the required footprint, specifically the 5-lead SOT-23 configuration. Cross-reference the manufacturer's latest datasheet for any updates regarding pinout definitions or thermal characteristics before finalizing procurement specifications.
Selection Notes
Select this component when designing systems that require a compact solution for stepping up low input voltages to higher levels. The adjustable output feature allows flexibility in setting precise voltage rails. Ensure the application demands do not exceed the 550mA peak current capability. Consider the efficiency trade-offs associated with the fixed off-time control scheme at varying load conditions.
Part Context
This device belongs to the LM2704 family of micropower step-up converters. It is designed for applications where space and quiescent current are critical constraints. The family includes variants with fixed and adjustable output options, all sharing the core architecture of an integrated switch and oscillator controlled by a fixed off-time regulator.
Replacement Considerations
Direct substitutes include other LM2704 variants such as LM2704MFX-ADJ, which shares identical electrical characteristics but may differ in reel packaging. Verify pin compatibility and thermal performance when considering alternative manufacturers' parts offering similar boost converter functionality.
