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US3706

Unisonic Technologies
Part Number US3706
Manufacturer Unisonic Technologies
Description CURRENT MODE PWM POWER SWITCH
Published Mar 12, 2016
Detailed Description UNISONIC TECHNOLOGIES CO., LTD US3706 Preliminary CURRENT MODE PWM POWER SWITCH CMOS IC  DESCRIPTION The UTC US37...
Datasheet PDF File US3706 PDF File

US3706
US3706

Overview
UNISONIC TECHNOLOGIES CO.
, LTD US3706 Preliminary CURRENT MODE PWM POWER SWITCH CMOS IC  DESCRIPTION The UTC US3706 combines a dedicated current mode PWM controller with a high voltage power MOSFET.
Low VDD startup current make the power reliable on startup design and a large value resistor could be used in the startup circuit to minimize the standby power.
At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequency for Higher conversion efficiency at light load condition.
The UTC US3706 offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), over temperature protection (OTP), over voltage protection and VDD under voltage lockout (UVLO).
The internal slope compensation improves system stability at high PWM duty cycle output.
Leading-edge blanking on current sense input removes the signal glitch, which offering minimal external component count in the design.
Excellent EMI performance is achieved with UTC proprietary frequency hopping technique (ZL201020615247.
1) together with soft driver control.
Audio noise is eliminated due to switch frequency more than 20kHz during operation.
The US3706 has such applications as: battery charger, power adaptor, set-top box power supplies, ink jet printers, open-frame SMPS.
1  FEATURES * UTC proprietary frequency hopping technology for * OLP,OVPand OTP for higher security Improved EMI performance.
* Fixed switch frequency 65kHz * Power-saving mode for high light-load and standby * Low start-up current efficiency * Cycle-by-cycle Current Limiting * Soft Start * Under voltage lockout (UVLO) * Dynamic peak current limiting for constant output power * Leading edge blanking on source input * Built-in synchronized slope compensation * Few external components required TO-220F-6  ORDERING INFORMATION Ordering Number Lead Free Halogen Free US3706L-TF6-T US3706G-TF6-T Packag...


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