TA的每日心情 | 开心
2022-8-5 15:55 |
|---|
签到天数: 11 天 [LV.3]偶尔看看II
|
EDA365欢迎您登录！
您需要 登录 才可以下载或查看，没有帐号？注册
x
FEATURES6 {1 L/ P. b% e0 {! B# l& E
*3.6V to 15V Input Voltage Range
) d4 L2 @2 R% q0 d) k5 Y& v*3A Output Current per Channel4 Y- k* p6 G* g$ E# U" }
*Up to 95% Efficiency
, x7 s5 n( r# v+ Z*Low Duty Cycle Operation: 5% at 2.25MHz9 e" \% o/ V% p
*Selectable 0°/180°Phase Shift Between Channels' b: e$ b4 _' V7 e. Z$ U
*Adjustable Switching Frequency: 500kHz to 4MHz
8 c, W7 k4 D2 f- V*External Frequency Synchronization$ J4 h! q( I# }3 U2 R
*Current Mode Operation for Excellent Line and Load Transient Response
5 p! ~% m0 B& G% p7 R4 c* 0.6V Reference Allows Low Output Voltages. y( a5 `7 q, C/ T# g8 R/ D) _
*User Selectable Burst Mode Operation or Forced Continuous Operation
& ^ t- V! C9 |3 B*Output Voltage Tracking and Soft-Start Capability
( @6 O. A1 V- q" n*Short-Circuit Protected; q" l* I5 M( m; Q, K+ d' H
*Overvoltage Input and Overtemperature Protection; u+ \) Q9 X/ ]. O) @
*Low Power 2.5V Linear Regulator Output
; k: {9 e2 K% s; i; [* K*Power Good Status 0utputs
: N# v' t/ Z0 r/ G*Available in(4mmX5mm) QFN-28 and 28-Lead TSS OP Packages5 A; Z9 k: ]; J; O. |% p3 z* ]
DESCRIPTION& W6 p# h. `0 Q; i% z9 T! A3 Q
TheZCC3633 is ahighefficiency, dual-channel monolithic synchronous buck regulator using a controlled on-time, current mode architecture, with phase lockable switching frequency. The two channels can run 180° out of phase, which relaxes the requirementsfor input and output ca-pacitance.The operating supply voltagerange isfrom3.6V to 15V making it suitable for dual cell lithium-ion batteries as well as point of load power supply applications froma 12V or 5V supply.- _8 Q0 b7 I3 O& ^: P
The operatingfrequencyis programmable and synchroniz-able from 500kHz to 4MHz with an external resistor The high frequencycapability allows the use of small suRFace mount inductors andcapacitors. The unique constant frequency/controlled on-time architecture is idealfor high step-down ratio applications thatoperate athighfrequency while demanding fasttransientresponse.An internal phase lock loop servos the on-time oftheinternal one-shottimer to match the frequency of the internal clock or an applied external clock.: Z2 {7 K! r) n r- u x: p- O
The ZCC3633 can select between forced continuous mode andhigh efficiency Burst Mode operation
/ }( k0 X$ b. E* X9 e( K3 ]' n% D, dAPPLICATIONSD
2 F/ N0 g) z* {6 p6 _& }* Aistributed Power Systems
' {: z$ l8 K! `! xBattery Powered Instruments
% T( ^6 {. V" B, }* QPoint of Load Power Supplies
6 q. s3 P$ E0 X/ a2 V |
|
/1 
楼主
收藏
淘帖
支持！
反对！