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tps65250/1,你看看咋样，够用吗？
: i8 j# i0 W, L8 E# Y8 f% `: a( ?1 K+ |- d7 P4 Z! w
Input Supply Voltage Range - }0 m, C' R$ b0 j
(4.5 V - 18 V)
- A* l! ?3 N9 Z0.8 V, 1% Accuracy Reference
) |" c1 Q" S5 N4 y* y& dContinuous Loading: 3 A (Buck 1), m& a3 M% I; T4 l- s
2 A (Buck 2 and 3)
' E5 L; k$ |5 s: Y9 {0 gMaximum Current: 3.5 A (Buck 1), % m% @" B: S5 [. y9 t5 b7 h4 [
2.5 A (Buck 2 and 3)
$ _3 z; q; [7 p1 RAdjustable Switching Frequency
+ e9 x& P& q, x. [* K300 kHz - 2.2 MHz Set By External Resistor( k$ r5 w) F& S1 E" r( W1 _
External Synchronization Pin for Oscillator4 q5 D0 `8 M) ?$ B
External Enable/Sequencing and Soft Start Pins$ U9 w* K" t: A/ j! J- q! O9 F% W
Adjustable Current Limit Set By External Resistor
\# G j& K9 c s: N2 g% VSoft Start Pins& {4 ]" N m4 d& Q7 j" d5 T: j
Current-Mode Control With Simple Compensation Circuit
9 v" i# Q4 N; HPower Good and Reset Generator0 e. b; l @- j- ]8 t1 b' Y
Storage and Release Circuit Optimized for Reduction of Storage
; N, ?7 d3 t; b' kCapacitance in Dying Gasp Mode (Option)+ H; }! R6 w' W `, W0 z0 v
Low Power Mode Set By External Signal+ H& `3 E# g7 v& u
QFN 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