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XC9302552MR

更新时间: 2024-09-15 23:32:27
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描述
Analog IC

XC9302552MR 数据手册

  
_______________________________________________________________________________________________________________  
XC9301/9302 Series  
PWM, PWM/PFM Switching  
DETAILS  
Step-Up & Down DC/DC Controller  
General Description  
Features  
The XC9301/02 s e rie s a re s te p -up /d own DC/DC c onve rte r  
c ontrolle r ICs with fa s t, low ON re s is ta nc e d rive rs b uilt-in. A  
ve rs a tile, la rge outp ut c urre nt, s te p -up /d own DC/DC c on-  
ve rte r c a n b e re a lis e d us ing only 4 b a s ic e xte rna l c om p one nts  
- tra ns is tors, c oils, d iod e s a nd c a p a c itors.  
Outp ut volta ge is s e le c ta b le in 0.1V s te p s within a 2.4V ~ 6.0V  
( ± 2.5% a c c ura cy) ra nge a nd switching fre q ue ncy is s e t a t  
180kHz.  
Input Voltage Range: 2.0V ~ 10V  
Output Voltage Range: 2.4V ~ 6.0V ( ± 2.5% a c c ura cy)  
(s e le c ta b le in 0.1V s te p s )  
Oscillation Frequency: 180KHz ( ± 15% a c c ura cy)  
Output Current: m ore tha n 250m A (VIN=2.4V, VOUT=3.3V)  
Efficiency: 81% (typ ) a t 5.0V  
78% (typ ) a t 3.3V  
Stand-By: ISTB = 0.5µA (m a x)  
Output Voltage Internal Set-Up  
SOT-25 Package  
The XC9302 s e rie s switc he s from P WM to P FM control d uring  
light loa d s a nd the s e rie s offe rs high e ffic ie nc ie s from light  
load s through to large outp ut curre nts.  
S oft-s ta rt tim e is inte rna lly s e t to 10 m s e c which offe rs p ro-  
te c tion a ga ins t rus h c urre nts whe n the p owe r is switc he d on  
a nd a ls o a ga ins t volta ge ove rs hoot.  
During s hutd own (CE p in = L), c ons um p tion c urre nt c a n b e  
re d uc e d to a s little a s 0.5µA or le s s.  
Pin Configuration  
Pin Assignment  
P IN  
P IN  
5
4
3
FUNCTION  
NUMBER NAME  
1
2
GND  
VDD  
Ground  
Powe r S up p ly  
3
4
5
EXT/  
VOUT  
CE  
Exte rna lTra ns is tor Conne c tion  
Outp ut Volta ge Monitor  
Chip Ena b le  
1
2
S OT-25  
<S OT-23-5>  
(TOP VIEW)  
Block Diagram  
VOUT  
VDD  
Phase  
Compensation  
Error Am p.  
+
EXT/  
+
-
Buffe r,  
Drive r  
-
P WM  
Com p a ra tor  
GND  
CE  
Ra m p Wave  
Ge ne rator,  
OS C  
Vref with  
Soft Start,  
CE  
PWM/PFM  
Controler  
Ordering Information  
XC9301①②③④⑤⑥  
FUNCTION  
AS ta nd a rd (5-p in)  
Outp ut Volta ge : 2.4 ~ 6.0  
FUNCTION  
Pa cka ge  
MS OT-25 (1re e l = 3000p c s )  
e.g. 3.0V = ② → 3, ③ → 0  
Em b os s e d Ta p e  
Os c illa tor fre q ue ncy  
2180kHz  
Rs ta nd a rd loa d ing  
Lreve rs e loa d ing  
* XC9302 S e rie s P WM/P FM switching c ontrol (s a m e a s XC9301 s e rie s )  
51  

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