ZCC1001E 100V 1A降压芯片 V1.1

四维电子

Features
 9V to 100V input voltage range
/ h2 z7 Q% E( |. g# ` 1.5A current limit
 1A continuous load current
 95% Peak Efficiency
 400μA operating quiescent current
 120V 400-mΩ high-side MOSFET
5 V. D' Y- Z8 Z! V. }4 F, e Peak Current mode control
 150 kHz Fixed Frequency
 Internal compensation for ease of use
 Up to 92% duty cycle
% i2 Z( }5 x/ [$ p* e 0.8V voltage reference
2 W2 U7 _1 ]( l1 B0 Y$ k0 ` 1μA shutdown current
 150ms Hiccup mode short circuit protection
5 R) o/ p0 }  Q% h7 [6 {+ s1 nFunction
+ B7 c6 j- @- d( _ Thermal shutdown Function
 ESOP-8 package
1 H; k) A* H* O! v& wApplications
) y6 e2 }) m; _' I' M Charger in vehicle
( o# q0 m" q2 S3 h Battery Chargers
 Power adapter
0 E* C1 P; K* u4 Z9 tTypical Application
Description
  ^2 T4 }! u% Y% e4 w9 A. XThe ZCC1001E is a high voltage, non-synchronous
step-down converter operates over a wide range
input voltage 9V to 100V. The ZCC1001E
integrates a 120-V 400-mΩ high-side MOSFET.
The ZCC1001E delivers 1A continuous load
current with up to 95% efficiency. The ZCC1001E
; `6 n' {+ I& }) Soperates with fixed frequency peak current control
! |% h! Z7 ~  l3 x* _; C+ owith built-in compensation eliminates the need for
7 Z* k. A7 z* g% e# \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
1 T) f! {, z' e. Rcurrent condition has persisted for longer than the
present time.
+ M" O" t0 X6 {The ZCC1001E exhibits protection features that
; K/ T+ c# W% _; Y4 W7 O5 Rprotect the load from faults like under-voltage,
over-current and over-temperature.
The ZCC1001E is available in an ESOP-8 package.
" d- R/ Y/ [, v3 x* `

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。
, M8 V* P: L3 k7 C/ [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。