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tps65250/1,你看看咋样，够用吗？
+ D, x4 b* z+ X( x$ p2 }: k) v) l' C# ~2 l0 ~
Input Supply Voltage Range
0 ^' N c3 G% ` r(4.5 V - 18 V)9 [+ @5 `; r; E4 j4 M5 ~
0.8 V, 1% Accuracy Reference
. ~" {! Y% V5 Y" G- aContinuous Loading: 3 A (Buck 1),
, W9 x* R- B7 l1 `- T# \# c2 A (Buck 2 and 3)& L1 k6 ~' M! n6 X3 o
Maximum Current: 3.5 A (Buck 1),
# g1 K D9 y$ A7 V5 @2.5 A (Buck 2 and 3)5 g' ?2 M# P8 T2 Z, f
Adjustable Switching Frequency
& u5 C/ v# j% E" r2 v300 kHz - 2.2 MHz Set By External Resistor
3 U2 j: k& R. HExternal Synchronization Pin for Oscillator
/ D$ `3 P, N7 f, e+ xExternal Enable/Sequencing and Soft Start Pins1 f( ~( y, _- E, [1 r
Adjustable Current Limit Set By External Resistor: _7 ^0 J6 x# P9 s( x7 {0 g
Soft Start Pins
8 R! u; V J8 S5 ~; yCurrent-Mode Control With Simple Compensation Circuit5 i: j5 D3 V. ^1 V1 J3 x; R/ A
Power Good and Reset Generator. y' A1 S$ ?; j" ^
Storage and Release Circuit Optimized for Reduction of Storage 1 ^8 J0 }6 L6 s4 a/ ~' e
Capacitance in Dying Gasp Mode (Option)
; F. b6 f* w" wLow Power Mode Set By External Signal K$ a$ l9 g, Q _3 a
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
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