SKU: 26909231550

10PCS - UC3843B 3843B SOP-8 SMD

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Description

10PCS - UC3843B 3843B SOP-8 SMD10PCS UC3843B 3843B SOP 8 SMD The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off line or dc to dc fixed frequency current mode control schemes, with a minimum number of external components. Internally implemented circuits include an undervoltage lockout (UVLO) and a precision reference that is trimmed for accuracy at the error amplifier input. Other internal circuits include logic to

10PCS - UC3843B 3843B SOP-8 SMD

The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuits include an undervoltage lockout (UVLO) and a precision reference that is trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator that also provides current-limit control, and a totem-pole output stage designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state. The TL284xB and TL384xB series are pin compatible with the standard TL284x and TL384x with the following improvements. The start-up current is specified to be 0.5 mA (max), while the oscillator discharge current is trimmed to 8.3 mA (typ). In addition, during undervoltage lockout conditions, the output has a maximum saturation voltage of 1.2 V while sinking 10 mA (VCC = 5 V). Major differences between members of these series are the UVLO thresholds and maximum duty-cycle ranges. Typical UVLO thresholds of 16 V (on) and 10 V (off) on the TLx842B and TLx844B devices make them ideally suited to off-line applications. The corresponding typical thresholds for the TLx843B and TLx845B devices are 8.4 V (on) and 7.6 V (off). The TLx842B and TLx843B devices can operate to duty cycles approaching 100%. A duty-cycle range of 0% to 50% is obtained by the TLx844B and TLx845B by the addition of an internal toggle flip-flop, which blanks the output off every other clock cycle.The TL284xB-series devices are characterized for operation from –40°C to 85°C. The TL384xB-series devices are characterized for operation from 0°C to 70°C.
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SKU: 26909231550

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Erika C.
Charlottesville, US
★★★★★ 1
Does not spray
Size: 5 Ounce (Pack of 2)
Does not spray!!! This is the second set I purchased and I have had issues that I was unable to spray with 3 of the 4 bottles. Was incredibly inconvenient when we brought a new bottle on vacation and it didn't work. Company would not send a replacement - only a physical coupon. I cannot find the sunscreen in stores and the coupon only covers about half a new bottle.
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Reviewed in the United States on December 10, 2025
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Mubearbeats
Boise, US
★★★★★ 5
Favorite sunscreen
Size: 5 Ounce (Pack of 2)
Hands down best sunscreen ever! It’s easy to apply and smells great. Keeps the kids protected from Sunburn
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Reviewed in the United States on July 5, 2024
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T. Kulupka
Phoenix, US
★★★★★ 5
Great
Size: 5 Ounce (Pack of 2)
Really good coverage for a spray, smells great and don’t irritate mine or my kids sensitive skin.
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Reviewed in the United States on June 16, 2024
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Miranda Lawson
Belleville, US
★★★★★ 4
Bad packaging
Size: 5 Ounce (Pack of 2)
The spray nozzle on these suck.
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Reviewed in the United States on May 31, 2026
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Lacy Henry
Cuba, US
★★★★★ 3
Spray stops working
Size: 5 Ounce (Pack of 2)
I’ve been buying this product for awhile and keep experiencing issues. It protects your skin well but is sometimes hard to spray and half the time the nozzle stops working while there is still product in the bottle.
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Reviewed in the United States on November 27, 2024

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