ACTIVE
Part Number
UM3500
Description
600mA, 1.5MHz, 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)
5.5
Control mode
PWM / PSM
Switching Frequency (MHz)
1.5
Max Efficiency(%)
96
Features
Low Quiescent Current, Short Circuit Protection, Thermal Fault Protection
Operating Temperature Range (℃)
-40 to 85
Package
SOT23-5
The UM3500 is a 1.5MHz constant frequency, slope compensated current mode PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery. The UM3500 can supply 600mA of load current from a 2.5V to 5.5V input voltage. The output voltage can be regulated as low as 0.6V. The UM3500 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system. Pulse Skipping Mode operation at light loads provides very low output ripple voltage for noise sensitive applications.
- High Efficiency: Up to 96%
- 1.5MHz Constant Switching Frequency
- 600mA Output Current
- Integrated Main Switch and Synchronous Rectifier. No External Schottky Diode
- 2.5V to 5.5V Input Voltage Range
- Output Voltage as Low as 0.6V
- 100% Duty Cycle in Dropout
- Low Quiescent Current: 50礎
- Short Circuit Protection
- Thermal Fault Protection
- <1礎 Shutdown Current
- Lead Free SOT23-5 Package
- Cellular and Smart Phones
- Microprocessors and DSP Core Supplies
- Wireless and DSL Modems
- PDAs, GPS
- MP3 Player
- Portable Instruments
| Part Number | Packaging Type | Marking Code | Shipping Qty |
|---|---|---|---|
| UM3500 | SOT23-5 | LTA5 | 3000pcs/7Inch Tape & Reel |
