Semtech SC189 Step Down Regulators
Semtech SC189 Step Down Regulators deliver up to 1.5A output current in either an ultra-small 2mm x 2mm, low profile package, or a low-cost SOT23-5 package. With only three external filter components, the SC189 is a complete step-down regulator solution. The SC189 Regulators feature an input voltage range of 2.9V to 5.5V with either factory-programmed outputs from 1.0V to 3.3V or adjustable output via an external resistor divider.
The converter allows small L/C filtering components by operating at a fixed 2.5MHz switching frequency. Compatible with chip inductors and capacitors, the voltage mode architecture offers a minimum PCB footprint and lowest overall system cost. A total 25mm2 footprint and a <1mm solution height are achievable, making the SC189 the ideal solution for high-density systems.
The Semtech SC189 Step Down Regulators provide protections to safeguard the device and system under fault conditions. These include input under-voltage, output overvoltage, output short circuit, and over-temperature protection.
The SC189 is offered in a thermally enhanced, 2mm x 2mm x 0.6mm MLPD-UT6 or SOT23-5 package.
Features
- 2.9V to 5.5V VIN range
- 1.0V to 3.3V VOUT options
- Up to 1.5A output current
- Ultra-small footprint, <1mm height solution
- 2.5MHz switching frequency
- Efficiency up to 93%
- Low output noise across load range
- Excellent transient response
- Start up into pre-bias output
- 100% Duty-cycle low dropout operation
- <1µA Shutdown current
- Internal soft start
- Input under-voltage lockout
- Output over-voltage, current limit protection
- Over-temperature protection
- Adjustable output voltage
- Available in SOT23-5 package and 2mm x 2mm x 0.6mm thermally enhanced MLPD-UT6 package
- -40°C to +85°C temperature range
- Fully WEEE and RoHS compliant
Applications
- Bluetooth radios
- DSC and PMPs
- GPS devices
- xDSL systems
- POL regulators
- Portable HDD
- Wireless LAN
Typical Application
เผยแพร่แล้ว: 2563-07-27
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