ZCC1001E 100V 1A降压芯片 V1.1

四维电子

Features
 9V to 100V input voltage range
 1.5A current limit
 1A continuous load current
 95% Peak Efficiency
! U1 m7 D, R) G  q" c( J' d 400μA operating quiescent current
0 ?/ l+ @  F# r8 s6 H0 ` 120V 400-mΩ high-side MOSFET
 Peak Current mode control
 150 kHz Fixed Frequency
$ i3 }* E: P0 [: d. Z Internal compensation for ease of use
6 x& a& H( y" u3 }* p Up to 92% duty cycle
 0.8V voltage reference
" }6 q8 q/ s2 E) ~ 1μA shutdown current
$ g; l1 D; U/ d. ?8 E2 {8 H- Y 150ms Hiccup mode short circuit protection
Function
6 }4 B7 A5 B1 K. X2 y Thermal shutdown Function
& u) I( j3 p% T/ E0 _ ESOP-8 package
Applications
- A9 H  G& h) H Charger in vehicle
5 y- n8 {4 k, k, q Battery Chargers
 Power adapter
Typical Application
Description
The ZCC1001E is a high voltage, non-synchronous
4 z) G3 B* I; i& c  v. Rstep-down converter operates over a wide range
input voltage 9V to 100V. The ZCC1001E
5 R8 J/ S7 s; iintegrates a 120-V 400-mΩ high-side MOSFET.
* @$ A4 N' X. {% ~The ZCC1001E delivers 1A continuous load
) d4 M1 K/ J  u/ G4 C5 gcurrent with up to 95% efficiency. The ZCC1001E
7 Z& w5 m2 n, z  x3 ]( Foperates with fixed frequency peak current control
" S4 M4 v. r6 }; [& uwith built-in compensation eliminates the need for
( u+ Q$ v* T1 V+ kexternal 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 the
present time.
. _2 s: r" b6 Q/ Y" ^  N5 |5 _The ZCC1001E exhibits protection features that
. F  I6 K2 {) T7 C9 V* w% }! p" v" V3 [protect the load from faults like under-voltage,
5 [3 J6 U* T8 u/ j1 {7 vover-current and over-temperature.
The ZCC1001E is available in an ESOP-8 package.

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。
5 P! J- {* e$ o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。
. W; |( W% z  H$ a$ z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。