耐压100V同步降压最大5A输出电流 ZCC1005

四维电子

; b$ g( V9 m. M. {6 Z5 cFeatures
 9V to 100V input voltage range
( n& F9 O" {0 T2 t3 r& n" y/ ^4 M 1.5A/5A continuous output current
2 Y* K* ^* T. q0 T: x 95% Peak Efficiency
- _4 P9 a7 I/ U0 ?  U 400μA operating quiescent current
4 l" f5 f1 p2 M  L/ x) W# R. ? 100V 400-mΩ high-side MOSFET
& T7 V8 c- {' k' G Peak Current mode control
 150 kHz Fixed Frequency
5 w/ |7 s# P: ?. G9 d  G& s: q Internal compensation for ease of use
 Up to 92% duty cycle
: c& k) e+ I4 ?8 h) N( Q4 E 0.8V voltage reference
* s* q0 u  z% ?/ ]/ Q 1μA shutdown current
2 h# Q: A% V5 d( U! i7 S$ l 3A/6A cycle-by-cycle current limit
 150ms Hiccup mode short circuit protection
Function
/ C' F( P# R4 E, Z' i: b" {8 [ Thermal shutdown Function
% ^4 R9 i+ `1 T) T ESOP-8 package
Applications
 Charger in vehicle
4 T3 c% ?$ V  S) t7 w9 W Battery Chargers
) h8 u, W. u' e Power adapter
5 q6 N& c- X- G5 D# k: g" y. {Typical Application
. L% @3 H2 }7 u) x7 K; vDescription
The ZCC1005 is a high voltage, non-synchronous
step-down converter operates over a wide range
input voltage
+ ?: W9 L( a' s9 g5 [. n6 |8 g9V to 100V. The ZCC1005
: ]3 d" E' E9 F7 l+ g. y1 Q3 w5 Gintegrates a 100-V 400-mΩ high-side MOSFET.
7 {  p! c2 P7 QThe ZCC1005 delivers 1.5A continuous load
) K. U- c& H) z" b4 j# Ycurrent with up to 95% efficiency. The ZCC1005
operates with fixed frequency peak current control
with built-in compensation eliminates the need for
external components.
Cycle-by-cycle current limit in high-side MOSFET
& u7 N# W2 `+ I" A; {% E) Oprotects the converter in an overload condition.
Hiccup mode protection is triggered if the
over-current condition has persisted for longer than
# j7 x/ P! X0 P. h$ N* o" ]the present time.
6 Z' ~. c3 R7 @1 d; c' i1 V6 lThe ZCC1005 exhibits protection features that
! I9 M9 ?- B5 s: {3 R# y2 Cprotect the load from faults like under-voltage,
( ^/ u+ [2 T% k0 Y5 r0 Bover-current and over-temperature.
The ZCC1005 is available in an ESOP-8 package

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。