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2022-8-5 15:55 |
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3.3V/8A Synchronous Step-down Converter
6 X [/ v5 c& ]" tThe 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# u' z+ Z) {% [" _. t% e8 `
Features' I) H% s3 w! G8 N+ H6 c
4.5V ~ 23V Input Voltage Range
7 z/ |3 V; }) y. b; v9 Q4 d9 KFixed 3.3V output voltage3 Z0 i$ s& _" O$ _/ N
Supports 8-A continuous output current
& `" e7 q8 [# Y8 q$ C2 U( D! ZIntegrated 20mQ High side FET and 10m0 low side FET3.3V LDO capable ofsourcing 100mA
; ~2 B1 {2 E" G) I: H3 }Internal +1% reference voltage at 25°C
5 G2 {0 M" H- [9 I2 @+ \3 ^3 X% fIntegrated bypass switch, typical Ron is 1.500 g7 C$ ~+ V# |9 a
Internal 0.6ms soft-start$ t: v/ j5 s! J
Max switching frequency up to 500kHz4 V9 |4 @8 B T! y) U' i
fast transient response with COT control mode) K$ t( n y7 D& B# O
Power good indicator+ ?5 e4 w q! u# h; |. ]" I
Ultrasonic Mode
" c( z* F; W/ L/ `) s% kIntegrated protections for Uv, Ov, OT, and OCP40°C to +150°C operating junction temperature; O. s: w( o; T/ ~& V; y) g
AQFN3X3-12 FC Package
3 k4 s0 a4 ]1 O3 T N3 FApplications# S8 b1 ^% W0 v, S
Notebook Computers1 w- D+ Z% ^6 ^2 Q3 x# |
Notebook, Tablet Computers
, M' v* N. Y4 y( CGeneral power supply for 3.3V output) M$ j" U K$ @: \
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