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參數資料
| 型號： | UC3500 |
| 廠商： | 友順科技股份有限公司 |
| 英文描述： | HIGH EFFICIENCY VFM CONTROLLED STEP-UP DC/DC CONVERTER |
| 中文描述： | 高效衡工量值式控制升壓直流/直流轉換器 |
| 文件頁數： | 6/9頁 |
| 文件大?。?/td> | 153K |
| 代理商： | UC3500 |
UC3500
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
QW-R502-072,A
6 of 9
PRINCIPLE OF OPERAT ION
The UTC
UC3500
consists of a Band-Gap reference voltage source, error amplifier, VFM control logic core,
oscillator, V
LX
limiter amplifier, N-channel MOSFET switching transistor and output voltage divider network.
The device compares the Band-Gap reference voltage with the feedback voltage from the output through divider
network. In T
ON
phase, the energy is transferred from the battery to the inductor. The switch is turned off after a
maximum on time set to 2.5
μ
s. In T
OFF
phase, the energy stored in the inductor is transferred to the load. This
process is continuously performed to ensure stable output voltage. Until the output voltage reaches the expected
value.
Therefore, in case of light load, the device works in PFM mode. In heavy load condition, the device works in
continuous mode, the frequency range up to a maximum 300 KHz set by the built in oscillator. In over current
conditions, the Ton time is shorted; the switching frequency will be higher than 300 KHz.
相關PDF資料 |
PDF描述 |
|---|---|
| UC3550 | PWM CONTROLLED，PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER |
| UC3550-33-AF5-R | PWM CONTROLLED，PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER |
| UC3550-50-AF5-R | PWM CONTROLLED，PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER |
| UC3550L-33-AF5-R | PWM CONTROLLED，PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER |
| UC3550L-50-AF5-R | PWM CONTROLLED，PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| UC3500_09 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:HIGH EFFICIENCY VFM CONTROLLED STEP-UP DC/DC CONVERTER |
| UC3500_12 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:HIGH EFFICIENCY VFM CONTROLLED STEP-UP DC/DC CONVERTER |
| UC-3-50-002 | 制造商:ITT Interconnect Solutions 功能描述:UC-3-50-002 - Bulk |
| UC3500-30GM70-2E2R2-V15 | 制造商:PEPPERL+FUCHS 功能描述:Ultrasonic |
| UC3500G-XX-AB3-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:HIGH EFFICIENCY VFM CONTROLLED STEP-UP DC/DC CONVERTER |
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