Tautokohia te whakahuatanga BOM Hou LP8867QPWPRQ1
Huanga Hua
| MOMO | WHAKAMAHI | KORERO |
| Kāwai | Takiwa Whakakotahi (ICs) |
|
| Mfr | Texas Taonga |
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| Rangatū | Automotive, AEC-Q100 |
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| Mōkī | Ripene me te Hurorirori (TR) Tapahia Ripene (CT) Digi-Reel® |
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| Tūnga Hua | Hohe |
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| Momo | Kaiwhakahaere DC DC |
|
| Topology | SEPIC, Whakanuia (Whakanui) |
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| Whakawhiti-roto | Ae |
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| Te maha o nga Putanga | 3 |
|
| Ngaohiko - Tuku (Min) | 4.5V |
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| Ngaohiko - Tuku (Max) | 45V |
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| Ngaohiko - Putanga | 6V ~ 45V |
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| Onāianei - Putanga / Hongere | 120mA |
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| Auautanga | 300kHz ~ 2.2MHz |
|
| Pouriuri | PWM |
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| Nga tono | Automotive, Whakamuri |
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| Te Waahi Mahi | -40°C ~ 125°C (TA) |
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| Momo Whakaeke | Maunga Mata |
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| Mōkī / Take | 20-PowerTSSOP (0.173", 4.40mm te whanui) |
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| Mōkī Pūrere Kaiwhakarato | 20-HTSSOP |
|
| Tau Hua turanga | LP8867 | |
| SPQ | 2000PCS |
Ko nga waahanga mo te LP8867-Q1
- AEC-Q100 He tohu mo nga tono motuka:
- Te pāmahana pūrere kōeke 1:
- –40°C ki te +125°C, TA
- Ka taea te haumaru mahi
- Ko nga tuhinga e waatea ana hei awhina i te hoahoa punaha haumaru mahi
- 3-, 4-Channel 120-mA totohu nāianei
- 10 000:1 i te 100 Hz
- 1% o naianei e rite ana (te tikanga)
- Ko te aho o te LED ka eke ki te 120 mA mo ia hongere
- Ka taea te whakakotahi i nga putanga ki waho mo ia aho teitei ake
- Whakanuia whakauru me te kaitahuri SEPIC mo te hiko aho LED
- Awhe mahi ngaohiko whakauru 4.5 V ki te 40 V
- Ngaohiko putanga ki te 45 V
- Whakauruhia te 3.3-A Whakawhiti FET
- Te whakawhiti auau 300 kHz ki te 2.2 MHz
- Te huri i te urunga tukutahi
- Horahia te hihinga mo te EMI raro
- Te kimi hapa me te whakamarumaru
- Putanga hapa
- Ngaohiko whakauru OVP, UVLO me OCP
- Whakanuia te poraka SW OVP me te whakaputa OVP
- LED tuwhera me te poto hapa rapunga
- Mana-Raina FET mana mo te tiaki pahi pākahiko
- Te whakaheke aunoa a LED me te pūoko pāmahana o waho
- Whakaweto wera
Whakaahuatanga mo te LP8867-Q1
Ko te LP8867-Q1, ko te LP8869-Q1 he motuka tino whakauru, he iti-EMI, he ngawari ki te whakamahi i te taraiwa LED me te kaitahuri DC-DC.Ko te kaitahuri DC-DC e tautoko ana i te whakanui me te mahi aratau SEPIC.E wha, e toru ranei nga totohu o naianei teitei ka taea te whakakotahi mo te kaha o naianei.
Ko te kaitahuri DC-DC he mana ngaohiko putanga urutau i runga i nga ngaohiko whakamua arahina.Ko tenei ahuatanga ka whakaiti i te whakapau hiko ma te whakatika i te ngaohiko ki te taumata iti rawa i roto i nga ahuatanga katoa.Mo te whakahekenga EMI ka tautokohia e te DC-DC te horahanga hihinga mo te whakawhiti auau me te tukutahitanga o waho me te titi whakatapua.Ka taea e te LP886x-Q1 te whakararuraru mo te roopu auau tairongo.
Ko te awhe ngaohiko whakauru mo te LP886x-Q1 mai i te 4.5 V ki te 40 V hei tautoko i te tiimata-whakamutu me te tuunga o te utauta.Ko te LP886x-Q1 e whakauru ana i nga waahanga rapunga hapa.
