ZCC7008B-23V 8A同步降压 替代RT6258B

四维电子

3.3V/8A Synchronous Step-down Converter
The 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
" T+ D! O8 k; o8 wFeatures
4.5V ~ 23V Input Voltage Range
/ {1 i" }0 i% ]( a5 fFixed 3.3V output voltage
Supports 8-A continuous output current
Integrated 20mQ High side FET and 10m0 low side FET3.3V LDO capable ofsourcing 100mA
9 A+ O* S; |5 s& P3 fInternal +1% reference voltage at 25°C
5 m4 D! p0 {% nIntegrated bypass switch, typical Ron is 1.50
; Y) X4 y5 o7 ~: Q1 L# g1 wInternal 0.6ms soft-start
Max switching frequency up to 500kHz
, {0 k7 [+ G' R$ P/ i! S- hfast transient response with COT control mode
Power good indicator
; [2 \7 M  ]7 Y3 b+ E1 x1 C! zUltrasonic Mode
# a: }% g3 _. QIntegrated protections for Uv, Ov, OT, and OCP40°C to +150°C operating junction temperature
* g# n4 m  J: B% A4 u9 c6 NAQFN3X3-12 FC Package
+ t- i0 Z' g0 u7 vApplications
+ J1 U; b. `4 O/ Z8 BNotebook Computers
) N4 t# h2 X. t! v! M+ [Notebook, Tablet Computers
General power supply for 3.3V output