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tps65250/1,你看看咋样,够用吗?
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, F3 t$ q, J) d9 U/ Q$ x5 rInput Supply Voltage Range 0 d& x& P' _+ |" [
(4.5 V - 18 V) @* O4 q: v: K" a( ~( s
0.8 V, 1% Accuracy Reference3 G* E8 w: ~" e5 Y
Continuous Loading: 3 A (Buck 1), : J6 p8 \( k/ L0 i2 X
2 A (Buck 2 and 3)4 j$ o8 R" T5 n1 y
Maximum Current: 3.5 A (Buck 1),
# y. j |+ f9 d* R! Y% Z2.5 A (Buck 2 and 3)! @1 u( p6 r5 P. O1 V% I
Adjustable Switching Frequency / m- k3 P6 E! u' s( M& p
300 kHz - 2.2 MHz Set By External Resistor! R6 g/ h# _: y( B( w
External Synchronization Pin for Oscillator" n' w, }6 U* _1 N7 e
External Enable/Sequencing and Soft Start Pins8 ]$ m. @0 v4 d, P
Adjustable Current Limit Set By External Resistor
@# j P& Q1 g. a* |Soft Start Pins
$ ~4 e- Z/ s# d. TCurrent-Mode Control With Simple Compensation Circuit
2 H! _# N3 |/ y, D9 C0 SPower Good and Reset Generator& s, I3 K$ S, z7 h) S1 P# ]
Storage and Release Circuit Optimized for Reduction of Storage 1 y2 l; C% L! L
Capacitance in Dying Gasp Mode (Option)& n& S2 Q. V' y/ b0 X) X
Low Power Mode Set By External Signal0 |' k" i3 Z0 W8 H* x9 b. c% N0 v! D
QFN Package, 40-Pin 6 mm x 6 mm RHA |
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