MCP1602-250I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP1602-250I/MS is a 20 MHz synchronous buck regulator with PFM/PWM auto-switching, delivering 500 mA from a 2.7 V to 5.5 V input with a fixed 2.5 V output in an MSOP-8 package. It offers high-efficiency voltage-mode control for battery-powered applications. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP1602-250I/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0100(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 20 MHz switching frequency enabling ultra-small external inductors and capacitors for miniature buck converter solutions
- Automatic PFM/PWM switching maintains high efficiency from full 500 mA load down to light-load standby conditions
- 2.7 V to 5.5 V input range with fixed 2.5 V output in MSOP-8 for single-cell Li-Ion or 3.3 V rail step-down
Applications
The MCP1602-250I/MS targets portable consumer electronics and IoT edge nodes where a single-cell Li-Ion battery must be regulated to 2.5 V at up to 500 mA with minimal standby power. Its 20 MHz switching frequency reduces the external inductor to sub-µH values, shrinking the total solution footprint to under 5 mm² for wearables and hearing aid modules. The automatic PFM/PWM mode ensures high efficiency across the full 0 mA to 500 mA load range, extending battery life in duty-cycle-heavy designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| YTEOL | 9 |
| Additional Feature | IT CAN ALSO OPERATE WITH PULSE FREQUENCY MODULATION |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 3.6V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.5A |
| Output Voltage-Max | 2.5625V |
| Output Voltage-Min | 2.4375V |
| Output Voltage-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2400kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What switching frequency does MCP1602-250I/MS use, and what size inductor does this enable?
The MCP1602-250I/MS operates at 20 MHz, allowing designers to use inductors as small as 470 nH and ceramic output capacitors below 1 µF, resulting in a total solution area under 5 mm² for ultra-compact portable power stages.
How does the PFM/PWM auto-switching in MCP1602-250I/MS improve battery life compared to a fixed-PWM regulator?
At light loads below about 10% of the 500 mA rated current, the device automatically transitions to PFM mode, reducing switching losses and quiescent current, which can extend battery runtime by 20% to 40% in systems that spend most of their time in standby.
Can MCP1602-250I/MS power a 2.5 V MCU directly from a Li-Ion cell that discharges from 4.2 V down to 2.7 V?
Yes. The device regulates its fixed 2.5 V output across the full 2.7 V to 5.5 V input range, so it maintains a stable 2.5 V rail from a fully charged 4.2 V cell all the way to the 2.7 V minimum input, covering the entire useful discharge curve of a standard Li-Ion battery.
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