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3.3V/8A Synchronous Step-down Converter( b5 ^7 H* M8 _' A+ |4 v$ _6 d
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
* [8 m) c! w3 t5 n' I: DFeatures
1 i% G, B }% V3 f, _' ]4.5V ~ 23V Input Voltage Range
( c$ C1 N5 j4 h3 ^Fixed 3.3V output voltage; A1 k7 X: @* k" e- J
Supports 8-A continuous output current$ k5 L) l1 B: d* d. N) c
Integrated 20mQ High side FET and 10m0 low side FET3.3V LDO capable ofsourcing 100mA1 i0 h0 ]- v" J1 k# X
Internal +1% reference voltage at 25°C
) C* g. C3 X5 t3 t& p4 ]Integrated bypass switch, typical Ron is 1.50+ M- e7 h$ t. T* d5 g# \0 J
Internal 0.6ms soft-start+ \7 K% H8 g3 m$ ~* D
Max switching frequency up to 500kHz
5 S1 N+ w! y5 c8 O' lfast transient response with COT control mode
. @) p$ ]- o! |, G0 dPower good indicator# {3 V4 y$ ?. F
Ultrasonic Mode3 R) Z6 `# ^2 R( y
Integrated protections for Uv, Ov, OT, and OCP40°C to +150°C operating junction temperature" g/ ?* n9 j5 ?; N& t; F: c
AQFN3X3-12 FC Package
# S; ?) |9 X6 [+ L. H2 qApplications
, N& r0 i" a) |$ X% j4 ?; [6 V1 t1 iNotebook Computers
~2 x& w, b" U; {2 T5 d$ ]3 i2 _. }6 S" cNotebook, Tablet Computers
4 K; P" a( p( \3 j1 T. O$ FGeneral power supply for 3.3V output
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