耐压100V同步降压最大5A输出电流 ZCC1005

四维电子

" |6 y7 \  T* Y+ ]2 J+ l8 \
& r0 e$ a% O* O  N% lFeatures
 9V to 100V input voltage range
$ h2 W* n* p2 w( F& W, z$ U 1.5A/5A continuous output current
+ N  d) |7 z5 O 95% Peak Efficiency
 400μA operating quiescent current
 100V 400-mΩ high-side MOSFET
0 c7 L" o; q5 D8 ~! y5 [ Peak Current mode control
( M9 R% ]: F1 j2 M7 S2 ` 150 kHz Fixed Frequency
6 H4 w' k* i9 O7 z Internal compensation for ease of use
8 M& f) {: K# @$ q( P7 T Up to 92% duty cycle
 0.8V voltage reference
2 r# G1 E9 @. E: c 1μA shutdown current
 3A/6A cycle-by-cycle current limit
; ]" w  n3 K8 X; p 150ms Hiccup mode short circuit protection
Function
 Thermal shutdown Function
9 n+ v+ q( w+ v/ N ESOP-8 package
+ b: u$ t3 t" G9 k, v2 w- Y- D& _) i3 f  NApplications
7 W$ L1 V: i2 P Charger in vehicle
0 B# f) O; f. c% a! a) G Battery Chargers
 Power adapter
+ c1 X( o1 W$ t  W+ Q4 x+ NTypical Application
' S+ f/ Z3 ]* Q1 p5 v" P9 [Description
+ ~1 c, q5 s" u# v- |The ZCC1005 is a high voltage, non-synchronous
  L; Z; `9 N8 `/ Q7 ], @step-down converter operates over a wide range
$ }' v0 ]: y' B! Linput voltage
7 Y; d/ o0 v  p. P' f/ t9V to 100V. The ZCC1005
integrates a 100-V 400-mΩ high-side MOSFET.
! }2 x8 i, B$ l5 f2 N( Y2 ZThe ZCC1005 delivers 1.5A continuous load
current with up to 95% efficiency. The ZCC1005
7 f* h% }, G- Q7 M" qoperates with fixed frequency peak current control
with built-in compensation eliminates the need for
external components.
Cycle-by-cycle current limit in high-side MOSFET
protects the converter in an overload condition.
Hiccup mode protection is triggered if the
1 T# l! G3 Q: X: }) R1 D5 v! kover-current condition has persisted for longer than
" u" N0 p& J  ?' e* M+ j( q! F/ Vthe present time.
" C% P; E- ?, m% g7 Z7 i+ \The ZCC1005 exhibits protection features that
6 O8 ?3 E8 f( B: u: tprotect the load from faults like under-voltage,
# C2 ^4 d: q2 v, H- r4 x8 zover-current and over-temperature.
, r8 @5 B: P/ ]* ?) ~4 f" K; oThe ZCC1005 is available in an ESOP-8 package

niubility

同步降压 优点：效率高：mos管的内阻非常小，导通压降远比肖特基二极管的正向大同压降小很多。