MIC33153-SYHJ-TR Microchip Integrated Circuit (Other) In Stock
Microchip MIC33153-SYHJ-TR is a 4 MHz PWM buck switching regulator delivering 1.2 A output current with an integrated inductor, soft-start, and power-good indicator in a compact TDFN-14 package. It operates from 2.7 V to 5.5 V input, making it ideal for single-cell Li-ion and USB-powered applications. Available in tape-and-reel from global distributors with standard 9-week lead time.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MIC33153-SYHJ-TR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.4200(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4 MHz PWM switching frequency with integrated inductor eliminates external magnetics and reduces BOM
- 1.2 A output current from 2.7 V to 5.5 V input covering single-cell Li-ion and USB power rails
- Built-in soft-start prevents inrush current during power-up in sensitive processor and FPGA supply designs
- Power-good output enables sequenced power-up in multi-rail systems from a TDFN-14 surface-mount package
Applications
The MIC33153-SYHJ-TR is used in IoT sensor nodes, Bluetooth SoC modules, and wearable devices where a single-cell Li-ion battery (2.7 V to 4.2 V) must be regulated down to 1.8 V or 3.3 V core and IO rails at up to 1.2 A. Its integrated inductor eliminates the largest external component in a traditional buck converter, saving up to 30 mm² of PCB area in ultra-compact designs. USB-powered accessories and portable medical devices also benefit from the 5 V input compatibility and power-good signal for controlled startup sequencing.
Specifications
| Manufacturer Package Code | TDFN-14 |
| Factory Lead Time | 9Weeks |
| Date Of Intro | 2019-06-28 |
| YTEOL | 18 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 3.6V |
| JESD-30 Code | R-PDSO-N14 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1.2A |
| Output Voltage-Max | 3.383V |
| Output Voltage-Min | 3.218V |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC14,.12,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 4000kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MIC33153-SYHJ-TR:
Switching Regulator, 1.2A, 4000kHz Switching Freq-Max, PDSO14
Frequently Asked Questions
What switching frequency does the MIC33153-SYHJ-TR use and how does the integrated inductor affect PCB design?
The MIC33153-SYHJ-TR operates at 4 MHz PWM switching frequency, which allows the integrated inductor to be miniaturized to the point where it fits inside the TDFN-14 package. This eliminates the need for an external inductor, typically the largest and most expensive passive component in a buck converter, saving approximately 20 to 30 mm² of PCB area and reducing BOM count by at least 1 component.
Can the MIC33153-SYHJ-TR be powered directly from a single-cell Li-ion battery and what output current is available?
Yes, the MIC33153-SYHJ-TR operates from 2.7 V to 5.5 V input, covering the full discharge range of a single-cell Li-ion battery from 4.2 V fully charged to 2.7 V cutoff. It delivers up to 1.2 A output current, sufficient to power a Cortex-M4 microcontroller at 80 MHz plus connected peripherals from a single compact regulator without an additional LDO or power management IC.
How does the soft-start feature of the MIC33153-SYHJ-TR benefit processor core supply designs?
The built-in soft-start ramps the output voltage gradually during power-up, limiting inrush current to safe levels and preventing voltage overshoot on sensitive processor core rails. For FPGAs and application processors with 1.0 V to 1.8 V core supplies, uncontrolled inrush from a 4.2 V Li-ion source could exceed the device's absolute maximum transient rating by several hundred millivolts, potentially causing latch-up or permanent damage.
When is MIC33153-SYHJ-TR preferred over a two-chip buck controller plus external inductor solution?
The MIC33153-SYHJ-TR is preferred when board area is critically constrained, such as in hearing aids, smartwatch modules, or medical patches where a total regulator footprint below 4 mm × 3 mm is required. The integrated inductor solution eliminates inductor placement, routing, and shielding concerns at 4 MHz, and the TDFN-14 package ships in 3000-piece tape-and-reel for automated assembly, making it cost-competitive versus discrete solutions when total bill-of-materials and assembly labor are included.
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| Qty. | Unit Price | Ext. Price |
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