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tps65250/1,你看看咋样，够用吗？
2 F4 w+ a" r' `% d& q" |2 @' N2 h4 ]
Input Supply Voltage Range
8 V5 W0 W; d! b/ z2 [2 a! e(4.5 V - 18 V)7 Y" y- M3 D1 g/ N
0.8 V, 1% Accuracy Reference. y) E! W& ]& \. E. B
Continuous Loading: 3 A (Buck 1),
8 x3 e/ k0 p/ \' i4 `2 A (Buck 2 and 3)
: U( E! ^, V0 y. a4 WMaximum Current: 3.5 A (Buck 1), 4 l! C* ]& J9 I* Z* G4 t
2.5 A (Buck 2 and 3)% O3 D3 B L! g# v
Adjustable Switching Frequency . _) X5 }) O/ i
300 kHz - 2.2 MHz Set By External Resistor" a( t5 r1 K9 \; Z. j0 P
External Synchronization Pin for Oscillator: T0 C$ I0 H9 C N% I- n2 t
External Enable/Sequencing and Soft Start Pins, \, b3 Q6 r* x! x* d: d) {
Adjustable Current Limit Set By External Resistor: K% R" [( B: e d4 @
Soft Start Pins
( ~& n% J$ z+ N% T6 ~9 `4 ~0 sCurrent-Mode Control With Simple Compensation Circuit
3 ^+ M {2 @4 `' F9 `Power Good and Reset Generator h( J/ L+ [- L/ X" u) u# D, ]2 _6 n
Storage and Release Circuit Optimized for Reduction of Storage 9 r& U. y$ i; }& j4 Z# C2 m) p; B9 Y. E
Capacitance in Dying Gasp Mode (Option)
% Z0 j5 V3 x9 X* fLow Power Mode Set By External Signal ^- S8 _$ N7 K8 |
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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反对！
楼主
发表于 2014-5-13 09:22
