ZCC1001E 100V 1A降压芯片 V1.1

四维电子

Features
 9V to 100V input voltage range
; d6 }: Q  v1 K/ n! j* h" T' h; i 1.5A current limit
 1A continuous load current
 95% Peak Efficiency
 400μA operating quiescent current
 120V 400-mΩ high-side MOSFET
. m5 M! J- w: J Peak Current mode control
7 M% v+ ?9 J" r+ _& D: a 150 kHz Fixed Frequency
0 g6 J3 Y6 r* z1 W4 g, o' a2 ~ Internal compensation for ease of use
 Up to 92% duty cycle
  B$ a8 ~' z$ d/ [) Y! K 0.8V voltage reference
 1μA shutdown current
 150ms Hiccup mode short circuit protection
# z: A8 |3 L/ M& `Function
 Thermal shutdown Function
, s# h# d7 D  y0 q& O ESOP-8 package
Applications
 Charger in vehicle
) F# |7 G7 ~" F Battery Chargers
 Power adapter
- v- d! n: X: ?# P. X* f- M7 i& K+ qTypical Application
Description
! p% n! E( c* m- WThe ZCC1001E is a high voltage, non-synchronous
5 X( S+ x7 M* a* ?# V2 Y4 estep-down converter operates over a wide range
input voltage 9V to 100V. The ZCC1001E
- f7 f$ p: o/ j- i4 f7 D$ aintegrates a 120-V 400-mΩ high-side MOSFET.
( N- N' c3 N: R' cThe ZCC1001E delivers 1A continuous load
current with up to 95% efficiency. The ZCC1001E
' g. Q8 E6 z5 X; C) {operates with fixed frequency peak current control
with built-in compensation eliminates the need for
  n# d9 m* h/ qexternal components.
Cycle-by-cycle current limit in high-side MOSFET
4 c& Z1 _" S6 w3 b4 m; `) pprotects the converter in an overload condition.
Hiccup mode protection is triggered if the over
" `! M" O9 B0 L- _8 ?current condition has persisted for longer than the
6 U# Y& n% W% bpresent time.
The ZCC1001E exhibits protection features that
protect the load from faults like under-voltage,
6 G, `: x0 [$ k2 z: Q6 T0 G( Aover-current and over-temperature.
" P* h# ]) `. H, @: l% k) yThe ZCC1001E is available in an ESOP-8 package.
( U% B2 x. b; L9 Q- Z. e, [5 s1 E. k

zhi_hui_zhou

串联线性稳压电路主要思路来自于基本线性调整模型。
+ w3 ~' |3 g9 R$ y7 Q在输入直流电压和负载之间串入一个三极管，其作用就是当输出阻抗发生变化引起输出电压同步变化时，通过某种反馈形式使三极管的发射极也随之变化，从而调整输出电压值，以保持输出电压基本稳定。
由于串入的三极管是起着电压调整作用的，所以，这个三极管也称为调整管。