LM3153MH-3.3 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments LM3153MH-3.3 is a SIMPLE SWITCHER constant on-time buck controller with fixed 3.3V output and 6V to 18V input range. Features 14-pin SOIC package with combined current-voltage control mode. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- LM3153MH-3.3 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 (COT) control mode provides fast transient response and simple external compensation for 6V to 18V input buck designs
- Fixed 3.3V output simplifies design by eliminating external feedback resistor dividers, reducing component count and board area
- Combined current-voltage control mode improves load regulation and line transient rejection across the wide 6V to 18V input range
- 14-pin SOIC (R-PDSO-G14) package balances compact size with sufficient pins for control signals, bootstrap, and feedback connections
Applications
LM3153MH-3.3 is suited for industrial 12V or 24V bus step-down power supplies needing a fixed 3.3V output for microcontrollers, FPGAs, and digital logic. Its 6V to 18V input range covers standard 12V industrial rails as well as higher-voltage inputs that arise in automotive 12V systems during load dump events. The SIMPLE SWITCHER design approach reduces external component count, making it a practical choice for engineers who need a fast, reliable 3.3V converter without extensive loop compensation design.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT/VOLTAGE-MODE |
| Control Technique | CONSTANT ON TIME |
| Input Voltage-Max | 18V |
| Input Voltage-Min | 6V |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 750kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3153MH-3.3:
Switching Controller, Voltage-mode, 12A, 750kHz Switching Freq-Max, PDSO14
Switching Controller, Voltage-mode, 12A, 750kHz Switching Freq-Max, PDSO14
Frequently Asked Questions
What output voltage does LM3153MH-3.3 produce and how is it set?
LM3153MH-3.3 is factory-configured for a fixed 3.3V output, with the feedback resistor network integrated or pre-selected inside the device. This eliminates the need for external feedback divider resistors, reducing Bill of Materials component count by 2 resistors and simplifying PCB layout around the feedback node for the 3.3V rail.
What is the advantage of constant on-time control in LM3153MH-3.3 compared to fixed-frequency PWM?
Constant on-time control in LM3153MH-3.3 delivers very fast load transient response because the on-time is triggered immediately by a drop in output voltage, without waiting for a fixed clock edge. This near-instantaneous response reduces output voltage undershoot during step load changes from light to heavy load, particularly beneficial at the 3.3V output where fast transient recovery protects sensitive digital logic.
Which input voltage scenarios can LM3153MH-3.3 handle in a 12V industrial system?
LM3153MH-3.3 accepts input from 6V minimum to 18V maximum, covering nominal 12V industrial rails with margin for typical ±15% bus variation down to 10.2V and up to 13.8V. Even during a 12V load dump event reaching 16V to 18V, the converter stays within its rated input range, maintaining stable 3.3V output without requiring an upstream clamp or additional protection circuitry.
How does LM3153MH-3.3 compare to LM3153MH-1.8 for a dual-rail power supply design?
LM3153MH-3.3 and LM3153MH-1.8 share the same 6V to 18V input range, constant on-time architecture, and 14-pin SOIC footprint, making them pin-compatible for dual-rail designs where both a 3.3V and 1.8V output are required. In a parallel-converter layout, both MPNs can be placed with the same schematic and PCB routing, differing only in the internal feedback reference, which simplifies a dual-output power supply board with minimal re-design effort.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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