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tps65250/1,你看看咋样，够用吗？
`3 f+ u6 w4 A% Y& Q$ c/ |
3 p$ [& C' \6 D& E& N! eInput Supply Voltage Range $ f6 \" u& b) K4 @. W5 o0 L) ?
(4.5 V - 18 V)# l! d1 \1 i8 F. K, ~& u. `
0.8 V, 1% Accuracy Reference
) j. S3 w- |. {' V9 a9 UContinuous Loading: 3 A (Buck 1), 5 L) E! Y. r- s$ |" ^
2 A (Buck 2 and 3)
7 @$ N' o% C9 j! j& @: OMaximum Current: 3.5 A (Buck 1), " ]0 H) g& n. ?
2.5 A (Buck 2 and 3)
/ c% e a* Q; v0 z; @Adjustable Switching Frequency 6 j4 Y7 `( e$ y( j
300 kHz - 2.2 MHz Set By External Resistor
9 N/ C* d/ f, J# DExternal Synchronization Pin for Oscillator7 B3 D' M% x4 B% }) S
External Enable/Sequencing and Soft Start Pins
8 o; t/ I) w% E* h! G) P( Q1 iAdjustable Current Limit Set By External Resistor
5 i6 {/ {+ ]; u l4 q* |Soft Start Pins- J1 x* _. I( i% L9 r/ i
Current-Mode Control With Simple Compensation Circuit0 f. O) I2 M! X P
Power Good and Reset Generator. Q8 u: t/ S# I9 A
Storage and Release Circuit Optimized for Reduction of Storage . |8 w; R6 J2 w, C, I, ^
Capacitance in Dying Gasp Mode (Option)# m) r. x' i: v3 E5 P
Low Power Mode Set By External Signal
& Y d8 ^( \( [! ]: wQFN Package, 40-Pin 6 mm x 6 mm RHA |
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发表于 2013-8-20 22:18
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支持！
反对！
发表于 2013-8-22 08:23
楼主