ACTIVE
Part Number
UM3502
Description
600mA, 1.2MHz, Intergrated Inductor, Synchronous Step-Down DC-DC Converter
Status
ACTIVE
Topology
Sync Buck
Iout(Max) (A)
0.6
Vin(Min) (V)
2.5
Vin(Max) (V)
5.5
Vout (Min) (V)
0.6
Vout (Max) (V)
5
Control mode
PWM / PSM
Switching Frequency (MHz)
1.2
Max Efficiency(%)
90
Features
Intergrated Inductor, Thermal Fault Protection
Operating Temperature Range (℃)
-40 to 85
Package
QFN24 4.0x4.0
The UM3502QA is a complete power conversion solution requiring only two low cost ceramic MLCC caps. Inductor, MOSFETs, synchronous rectifier and control IC are integrated into a tiny 4mm×4mm×1.05mm QFN package. The UM3502QA is engineered to simplify design and to minimize layout constraints. It is an ideal choice to be used to replace less efficient LDO to achieve improved efficiency in space restricted applications. The UM3502QA is capable of delivering 600mA output current over a wide input voltage range from 2.5V to 5.5V.
The UM3502QA is a high-efficiency, step-down DC-DC converter with a constant PWM frequency, current mode architecture. The UM3502QA automatically turns off the synchronous rectifier while the inductor current is low, and enters pulse skipping mode at light load condition. This can increase efficiency. The operation frequency is set to 1.2MHz at normal load condition. The UM3502QA enters shutdown mode and consumes less than 0.1礎 when EN pin is pulled low.
- Ultra Small QFN Package 4.0×4.0×1.05
- Integrated Inductor
- No Schottky Diode Required
- High Efficiency: Up to 90%
- 600mA Output Current
- 0.6V Minimum Output Voltage
- 2.5V to 5.5V Input Voltage Range
- <1礎 Shutdown Current
- Pulse Skipping Mode Operation
- Thermal Fault Protection
- Cellular and Smart Phones
- MCU, DSP and FPGA Core Supplies
- Wireless and DSL Modems
- Portable Game Consoles and Instruments
- PDAs, GPS
- Bluetooth Headsets
- Battery-Powered Devices
| Part Number | Packaging Type | Marking Code | Shipping Qty |
|---|---|---|---|
| UM3502QA | QFN24 4.0×4.0 | 3502 | 3000pcs/13Inch Tape & Reel |
