LM3153MH-3.3/NOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM3153MH-3.3/NOPB is a SIMPLE SWITCHER voltage-mode constant-on-time buck converter with fixed 3.3 V output and 6 V to 42 V input range. Key specs: wide 42 V input tolerance, SOIC-14 package, Pb-free/RoHS-compliant construction. In stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 15
- Lifecycle
- ACTIVE
- Datasheet
- LM3153MH-3.3/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Constant on-time voltage-mode control delivers fast transient response without external compensation, simplifying design for 3.3 V point-of-load rails
- Wide 6 V to 42 V input range supports 12 V, 24 V, and load-dump-stressed 36 V automotive or industrial bus rails from a single design
- Fixed 3.3 V output eliminates feedback resistor divider, reducing component count and design time compared to adjustable-output regulators
- Pb-free, RoHS-compliant 14-pin SOIC package suits through-hole-adjacent layouts and prototyping environments with standard 1.27 mm lead pitch
Applications
LM3153MH-3.3/NOPB is designed for industrial control systems, automotive electronics, and telecom equipment where a reliable 3.3 V rail must be derived from a 12 V or 24 V power bus. Its constant-on-time control scheme supports fast load-transient recovery, making it suitable for microcontroller and FPGA I/O supply rails with dynamic current demands. The wide 42 V input tolerance also covers battery-charger boost outputs and automotive load-dump environments without additional clamping.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | SEATED HGT-NOM |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | CONSTANT ON TIME |
| Input Voltage-Max | 42V |
| Input Voltage-Min | 6V |
| Input Voltage-Nom | 18V |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 12A |
| Output Voltage-Max | 3.3V |
| Output Voltage-Min | 3.3V |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 750kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3153MH-3.3/NOPB:
Switching Controller, Voltage-mode, 12A, 750kHz Switching Freq-Max, PDSO14
Frequently Asked Questions
What is the input voltage range of LM3153MH-3.3/NOPB and which power bus standards can it directly accept?
LM3153MH-3.3/NOPB accepts 6 V to 42 V at its input, with a nominal 18 V operating point. This spans 12 V automotive battery rails, 24 V industrial bus standards, and 36 V load-dump transients, allowing a single design to serve automotive, factory automation, and telecom applications without external clamping or pre-regulation. The 42 V absolute maximum provides an additional safety margin above the 36 V automotive load-dump specification.
How does constant-on-time control in LM3153MH-3.3/NOPB benefit designs with fast-changing load currents on a 3.3 V rail?
Constant on-time (COT) control responds to output voltage droops almost immediately by firing a new on-pulse without waiting for an error amplifier to settle, resulting in transient response times typically below 5 µs for step-load events. For 3.3 V rails powering microcontrollers with deeply variable active-to-idle current transitions of 100 mA to 1 A, this translates to smaller required output capacitance and more stable voltage regulation compared to conventional voltage-mode converters with external compensation.
Can LM3153MH-3.3/NOPB be used in a 24 V industrial PLC to supply a 3.3 V microcontroller, and what external components are needed?
LM3153MH-3.3/NOPB is well matched to 24 V PLC backplanes: the input sits comfortably within the 6 V to 42 V range, and the fixed 3.3 V output eliminates feedback resistors. Minimal external components are needed—an input capacitor (typically 10 µF to 22 µF), an output inductor (typically 15 µH to 47 µH at switching frequencies in the hundreds of kHz), an output capacitor (typically 100 µF), and a catch diode or synchronous FET. Total BOM for a complete 3.3 V buck stage is usually under 10 components.
How does the Pb-free 14-pin SOIC package of LM3153MH-3.3/NOPB compare to TSSOP alternatives for prototyping ease?
The 14-pin SOIC (R-PDSO-G14) has a 1.27 mm lead pitch versus 0.65 mm for most TSSOP packages, making hand-soldering and rework significantly more manageable during prototype builds. The larger package also improves heat spreading when the device dissipates power at high switching frequencies or large input-to-output voltage ratios, though its footprint is roughly 2× larger than TSSOP-14 — a worthwhile trade-off for low-volume industrial designs where manufacturability matters more than board density.
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