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ZCC7008B-23V 8A同步降压 替代RT6258B

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    2022-8-5 15:55
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     楼主| 发表于 2025-2-24 17:58 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式

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    3.3V/8A Synchronous Step-down Converter
    3 Y: ]/ w' g9 z/ B. b% Z0 UThe ZCC7008B operates at high efficiency over a wideoutput current load range with fixed 3.3V output voltageand capable of delivering 8A load current. lt supports awide range input voltage from 4.5V to 23V.AdaptiveConstant-On-Time (COT) control mode provides fasttransient response, eases loop stabilization, andoperates with a low-cost electrolytic capacitorZCC7008B also integrate a 100mA LDO and bypassswitch for efficiency improving.ZCC7008B provides complete enable control, under/overvoltage protect, short circuit protect, valley current limit,thermal shutdown function features.ZCC7008B provides compact solution for TCON powersystem) L( z+ a" N- s, V% Q( e
    Features4 |9 T+ u. X- v
    4.5V ~ 23V Input Voltage Range  N* H+ r6 u0 O4 `( ?9 e& |5 r
    Fixed 3.3V output voltage
    # d7 D5 \+ u# p8 Y4 c/ gSupports 8-A continuous output current5 g# u/ P0 ~: F( M5 _) E7 j0 C" U. Y
    Integrated 20mQ High side FET and 10m0 low side FET3.3V LDO capable ofsourcing 100mA
    9 T( v5 n/ s: C" O2 DInternal +1% reference voltage at 25°C' \6 l5 I4 O! i' e$ a/ w
    Integrated bypass switch, typical Ron is 1.506 O; Q( G# n: n. B& B9 E8 ^. L
    Internal 0.6ms soft-start
    3 E# H$ h) g0 j4 kMax switching frequency up to 500kHz
    / t. b9 M6 B: _  L  bfast transient response with COT control mode/ f# a+ b% s& K( f/ e
    Power good indicator9 \, Z& V# b% V8 p6 ~
    Ultrasonic Mode
    7 t& \  b& O2 I% AIntegrated protections for Uv, Ov, OT, and OCP40°C to +150°C operating junction temperature; H8 T6 N/ h& ^9 l
    AQFN3X3-12 FC Package
    : D  b: ]9 Q3 T" \5 XApplications, g5 k% |% c9 s. L8 A4 Z3 p' X
    Notebook Computers( u: j4 ~; g' B3 j5 f  x
    Notebook, Tablet Computers# h- e- u3 Q3 d+ b7 b
    General power supply for 3.3V output
    . D. N# {- y: A# u* n
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