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tps65250/1,你看看咋样,够用吗?
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$ {% O% N- d, lInput Supply Voltage Range
6 z7 p( k! r* o3 L% \" j. S0 r(4.5 V - 18 V), ^# n6 c- O. W- @* X3 n
0.8 V, 1% Accuracy Reference( w1 a& w6 Q5 g& m1 N [' F; J
Continuous Loading: 3 A (Buck 1),
( x9 {) V$ A! O$ B2 A (Buck 2 and 3)
1 B4 R* ~3 P1 b$ I- D6 ~Maximum Current: 3.5 A (Buck 1), * L/ x' h' A3 ~5 ?
2.5 A (Buck 2 and 3)0 R) j9 u7 [% `4 |6 Y& v' {
Adjustable Switching Frequency - H& |3 d! s7 j' R
300 kHz - 2.2 MHz Set By External Resistor
* r' \8 h2 I9 _/ rExternal Synchronization Pin for Oscillator
" t* s/ ~; w/ k) u9 s s. vExternal Enable/Sequencing and Soft Start Pins
+ l: k& l; M7 DAdjustable Current Limit Set By External Resistor8 m3 _1 t" ]" t: r: V
Soft Start Pins/ T I! H! i4 L9 W% C( u
Current-Mode Control With Simple Compensation Circuit
8 u4 u! s. C8 v9 ?2 Z& n" [0 VPower Good and Reset Generator( K* w t) g' z9 j. i
Storage and Release Circuit Optimized for Reduction of Storage
7 b+ f- n3 v( _' O; W8 lCapacitance in Dying Gasp Mode (Option)
' ^1 S# M" Y% w4 XLow Power Mode Set By External Signal
8 S7 U8 q3 {: v8 a7 H' ~5 p8 oQFN Package, 40-Pin 6 mm x 6 mm RHA |
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