首页 > 英联产品 > 电源供应 > 开关稳压器 > DC-DC升压转换器
UM1665DA
低功耗DC/DC升压转换器
Datasheet Reliability Report Package Information Order Sample  
Key Specifications
Part Number Description Status SubFamily Regulated Outputs(.) Vin(Min)(V) Vin(Max)(V) Vout(Min)(V) Vout(Max)(V) Iout(Max)(A) Topology Special Features Frequency(kHz) Operating Temperature Range (°C) Pin/Package EV Kit Available?
UM1665DA 低功耗DC/DC升压转换器 ACTIVE Step-Up (Boost) Converter 1 2 6 0 28 0 Boost Enable, Internal Soft-Start, Under Voltage Lockout 1000 -40 to 85 6/TDFN 3.0×3.0 Y
View All>>
Product Description
 
The UM1665 is a PFM controlled step-up DC-DC converter with a switching frequency up to 1MHz. The device is ideal to generate output voltage for small to medium LCD bias supplies and white LED backlight supplies from a single cell Li-ion battery. The part can also be used to generate standard 3.3V/5V to 12V power conversions.
With a high switching frequency of 1MHz, a low profile and small board area solution can be achieved using a chip coil and an ultra small ceramic output capacitor. The UM1665 has an internal 400mA switch current limit, offering lower output voltage ripple. The low quiescent current (typically 36µA) together with an optimized control scheme, allows device operation at very high efficiencies over the entire load current range.
The UM1665 is available in SOT23-5 and TDFN6 3.0×3.0 with only 0.60mm (TYP) thickness packages. The UM1665 is appropriate to be applied in small electronic equipments and wearable devices. 
 
Features
 
- 2.0V to 6.0V Input Voltage Range
- Adjustable Output Voltage up to 28V
- 400mA Internal Switch Current
- Up to 1MHz Switching Frequency
- 36µA Typical No Load Quiescent Current
- 1µA Maximum Shutdown Current
- Internal Soft-Start
- Available in Tiny SOT23-5 and Thin DFN6 3.0×3.0 with 0.60mm (TYP) Thickness Packages
  
Typical Application Circuit

  
Applications
 
- LCD Bias Supply
- White LED Supply for LCD Backlights
- Digital Still Cameras
- PDAs, Organizers and Handheld PCs
- Cellular Phones
- Standard 3.3V/5V to 12V Conversion
 
Pin Configurations   

                       (Top View)
  
Ordering Information

Part Number
Packaging Type
Marking Code
Shipping Qty
UM1665DA
TDFN6 3.0×3.0
1665
3000pcs/13Inch
Tape & Reel
 
@2014 Union Semiconductor Limited. All rights Reserved.
FOLLOW US