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2022-8-5 15:55 |
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3.3V/8A Synchronous Step-down Converter
3 Y: ]/ w' g9 z/ B. b% Z0 UThe 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) L( z+ a" N- s, V% Q( e
Features4 |9 T+ u. X- v
4.5V ~ 23V Input Voltage Range N* H+ r6 u0 O4 `( ?9 e& |5 r
Fixed 3.3V output voltage
# d7 D5 \+ u# p8 Y4 c/ gSupports 8-A continuous output current5 g# u/ P0 ~: F( M5 _) E7 j0 C" U. Y
Integrated 20mQ High side FET and 10m0 low side FET3.3V LDO capable ofsourcing 100mA
9 T( v5 n/ s: C" O2 DInternal +1% reference voltage at 25°C' \6 l5 I4 O! i' e$ a/ w
Integrated bypass switch, typical Ron is 1.506 O; Q( G# n: n. B& B9 E8 ^. L
Internal 0.6ms soft-start
3 E# H$ h) g0 j4 kMax switching frequency up to 500kHz
/ t. b9 M6 B: _ L bfast transient response with COT control mode/ f# a+ b% s& K( f/ e
Power good indicator9 \, Z& V# b% V8 p6 ~
Ultrasonic Mode
7 t& \ b& O2 I% AIntegrated protections for Uv, Ov, OT, and OCP40°C to +150°C operating junction temperature; H8 T6 N/ h& ^9 l
AQFN3X3-12 FC Package
: D b: ]9 Q3 T" \5 XApplications, g5 k% |% c9 s. L8 A4 Z3 p' X
Notebook Computers( u: j4 ~; g' B3 j5 f x
Notebook, Tablet Computers# h- e- u3 Q3 d+ b7 b
General power supply for 3.3V output
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