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3.3V/8A Synchronous Step-down Converter% u, j J% |+ e$ U8 L
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
( v7 p: q+ X! T; M# KFeatures
4 N! O2 U3 t. S+ s' ]" w9 Y4.5V ~ 23V Input Voltage Range
" h( e5 \4 r* I, x5 JFixed 3.3V output voltage
) z# V! P, D9 ^. D2 z& ~& M* fSupports 8-A continuous output current
3 G! I5 r" X$ t" V' G8 c9 BIntegrated 20mQ High side FET and 10m0 low side FET3.3V LDO capable ofsourcing 100mA
- B2 F4 \5 m+ h/ ^6 D; t1 xInternal +1% reference voltage at 25°C, S; w+ [9 o6 \/ H% Z2 k3 D$ X9 f
Integrated bypass switch, typical Ron is 1.50. t, c$ Z" T5 h, v0 g7 v8 l! \
Internal 0.6ms soft-start; F2 p: b$ D: F& E& `8 ~ N2 o2 }' T
Max switching frequency up to 500kHz! f' p8 I! J8 `& g3 Y" t; I7 L
fast transient response with COT control mode
: r5 u9 b/ S$ @1 W; C; P& iPower good indicator
* D! C% G- c" f# h$ Q$ A% }. XUltrasonic Mode r E- ^9 ~) C* L( k" i
Integrated protections for Uv, Ov, OT, and OCP40°C to +150°C operating junction temperature( {9 K: H4 J9 N
AQFN3X3-12 FC Package
5 T1 J# u( }, ?& {& @7 n$ u1 BApplications
1 z5 w/ [ X" K, t- n; M* QNotebook Computers: p0 l m2 F" V! W/ }' u, @ g+ g
Notebook, Tablet Computers# ~0 T, M/ A+ f' ~5 k9 l
General power supply for 3.3V output' W/ R3 t: O% ?6 [ t1 {* k; f2 ]
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