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3.3V/8A Synchronous Step-down Converter3 v' J! b! b+ g Z( ?. J6 @
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 powersystem2 _0 d; d ^) w5 L
Features: h; U6 j. r7 d- H
4.5V ~ 23V Input Voltage Range
% @2 Q$ B1 C3 f. MFixed 3.3V output voltage' t3 e9 D) c4 e7 \! c$ ~% G
Supports 8-A continuous output current( x3 Z! d2 S4 O1 ~5 y3 c: t
Integrated 20mQ High side FET and 10m0 low side FET3.3V LDO capable ofsourcing 100mA
8 ] @8 C) E7 Y$ j! g. S, lInternal +1% reference voltage at 25°C# w, S8 e; V! H# x0 S0 H
Integrated bypass switch, typical Ron is 1.50/ _; Q g8 [7 U, `% N1 u. Z
Internal 0.6ms soft-start
6 f. s. d. E& p R, R5 G+ uMax switching frequency up to 500kHz0 T, K2 O2 x9 H) G/ z# f
fast transient response with COT control mode5 d: A6 {. ]7 M9 ~
Power good indicator- F/ {: q6 V5 {* {
Ultrasonic Mode& A/ \- g- u7 k
Integrated protections for Uv, Ov, OT, and OCP40°C to +150°C operating junction temperature0 `$ e( j- f- X% y g/ Q& j: e
AQFN3X3-12 FC Package
4 {4 r7 f( ^3 v8 `" R- DApplications
9 O% D+ F9 N; P) l) u+ y XNotebook Computers
% Y. @3 s8 r) t1 j# h# @Notebook, Tablet Computers
, i' Y5 W- F H( C% fGeneral power supply for 3.3V output! T# E- L. q4 L
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