耐压100V同步降压最大5A输出电流 ZCC1005

四维电子

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6 Z( q- q! C- }Features
 9V to 100V input voltage range
( \7 x+ k2 U2 _  Y' @, S% g 1.5A/5A continuous output current
; v. O1 ^5 o% Q3 w1 m- ?/ r. @ 95% Peak Efficiency
+ f" z3 K  A' C 400μA operating quiescent current
 100V 400-mΩ high-side MOSFET
- S$ H# i/ m, d  h# I6 O: y Peak Current mode control
 150 kHz Fixed Frequency
 Internal compensation for ease of use
" O# Z2 u4 n/ I9 K" H Up to 92% duty cycle
 0.8V voltage reference
 1μA shutdown current
- l  N3 p3 L6 }- _ 3A/6A cycle-by-cycle current limit
+ C7 l: U+ a5 l, |6 X# s" {/ H1 x 150ms Hiccup mode short circuit protection
0 Y3 G5 t5 T7 |( r8 }2 kFunction
 Thermal shutdown Function
 ESOP-8 package
Applications
 Charger in vehicle
5 Q& D' q$ O  Q: I: a Battery Chargers
  J- v0 n3 s4 z Power adapter
9 R; ]; r* c4 i- h% _' STypical Application
9 c( }5 `/ e9 s5 }) _( m( }' x; rDescription
The ZCC1005 is a high voltage, non-synchronous
. U) P- r' \4 @. W, K* Mstep-down converter operates over a wide range
/ b3 ]+ ?5 k2 n" r$ finput voltage
0 T3 m8 {& r! ?, S: |4 T# p/ U+ P9V to 100V. The ZCC1005
! f/ s- H1 B, ^; R1 x& k" Rintegrates a 100-V 400-mΩ high-side MOSFET.
The ZCC1005 delivers 1.5A continuous load
current with up to 95% efficiency. The ZCC1005
- B8 W# Q# s8 f, }( r! o. Aoperates with fixed frequency peak current control
4 M5 G: }% r& [# s6 Iwith built-in compensation eliminates the need for
3 T* r  l* _5 \0 A% s; I' ]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
over-current condition has persisted for longer than
$ P3 y- G) p2 p+ n  j  N- E! Athe present time.
The ZCC1005 exhibits protection features that
" Q8 [# i( j. s7 F/ `% `protect the load from faults like under-voltage,
7 A% A7 t! p6 f9 h4 B. e& `over-current and over-temperature.
3 Y/ J0 h& J4 JThe ZCC1005 is available in an ESOP-8 package
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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。