ZCC1001E 100V 1A降压芯片 V1.1

四维电子

Features
 9V to 100V input voltage range
 1.5A current limit
: M& A# P9 f* w) f9 G8 V4 ~ 1A continuous load current
+ j) P0 |  X9 q) B 95% Peak Efficiency
 400μA operating quiescent current
) D6 J: ^* M/ |# D 120V 400-mΩ high-side MOSFET
, {. F5 @0 j! C- I Peak Current mode control
 150 kHz Fixed Frequency
$ o- I: ]  b+ w* q. h Internal compensation for ease of use
 Up to 92% duty cycle
 0.8V voltage reference
 1μA shutdown current
1 W5 D3 w$ v7 H( P 150ms Hiccup mode short circuit protection
Function
 Thermal shutdown Function
 ESOP-8 package
; t4 ]1 P9 B; \  q( eApplications
 Charger in vehicle
) q5 Y- O8 p% }; ]1 i Battery Chargers
 Power adapter
Typical Application
Description
1 Q! v; W; W% h" ]. _8 tThe ZCC1001E is a high voltage, non-synchronous
9 |& _! T8 }" [4 H6 Cstep-down converter operates over a wide range
) t# ~2 w1 @- z2 Einput voltage 9V to 100V. The ZCC1001E
) [/ K/ w+ A2 e9 G" Y2 \: d2 y' b) i1 Tintegrates a 120-V 400-mΩ high-side MOSFET.
The ZCC1001E delivers 1A continuous load
current with up to 95% efficiency. The ZCC1001E
operates with fixed frequency peak current control
with built-in compensation eliminates the need for
2 u3 a# R: Y4 B2 g- L1 F! Yexternal components.
) Z6 b; P! P5 ~! D/ @  r0 t  pCycle-by-cycle current limit in high-side MOSFET
protects the converter in an overload condition.
2 d8 I1 ^/ Z* l: LHiccup mode protection is triggered if the over
current condition has persisted for longer than the
present time.
The ZCC1001E exhibits protection features that
! |+ _% f/ u% ^2 E1 pprotect the load from faults like under-voltage,
3 E( ]$ k+ e; cover-current and over-temperature.
/ _* U* ?" {' @The ZCC1001E is available in an ESOP-8 package.
  A5 r% b9 W; \7 Y. T! c2 S

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。
  x7 H: Z0 J$ n% 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。
/ r5 s: V6 F; @8 r' U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。