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2022-8-5 15:55 |
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3.3V/8A Synchronous Step-down Converter
: h1 f+ W3 g1 r3 V% SThe 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 powersystem7 u& s l. J; ~/ A$ |& _
Features+ U% M" {* }8 {$ v) B( t: }
4.5V ~ 23V Input Voltage Range+ R0 D. K2 D. b/ {+ Q
Fixed 3.3V output voltage
; g. I8 `: B5 i) w, c- m( x/ XSupports 8-A continuous output current, H$ P( ?' s/ x
Integrated 20mQ High side FET and 10m0 low side FET3.3V LDO capable ofsourcing 100mA1 G+ M6 e% M/ O: q4 r8 E' P/ r
Internal +1% reference voltage at 25°C/ b+ ?3 Y8 u; ]$ B. J, ] q& U
Integrated bypass switch, typical Ron is 1.50: Q8 w& Z# E; A m6 F1 h
Internal 0.6ms soft-start
4 {8 Y" p3 r0 h* F, OMax switching frequency up to 500kHz! X. Z1 _7 v, O, @- z
fast transient response with COT control mode8 A1 _; f4 l2 f6 K Q
Power good indicator' @; \' f1 P7 F T" M/ X
Ultrasonic Mode
* n2 T8 {: r7 ?! ~; b9 RIntegrated protections for Uv, Ov, OT, and OCP40°C to +150°C operating junction temperature
/ [( p* l9 U' g; N- a3 TAQFN3X3-12 FC Package
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Notebook Computers
( z7 L& o! @. Q0 VNotebook, Tablet Computers
; {, E7 O7 F1 o' ?! J+ [2 K+ q$ i* F9 XGeneral power supply for 3.3V output
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