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tps65250/1,你看看咋样,够用吗?/ p. z w* C" \3 T; j5 L
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Input Supply Voltage Range O9 t/ ]( s/ p. s X
(4.5 V - 18 V)
+ ]: H2 g5 \8 Y9 T' a/ m0.8 V, 1% Accuracy Reference
+ L1 w9 Q2 j/ l* i& F" nContinuous Loading: 3 A (Buck 1), 1 ]7 `( Q0 h+ H% U
2 A (Buck 2 and 3)
7 j t l0 x3 U" vMaximum Current: 3.5 A (Buck 1),
: k1 f7 O0 v$ L1 f& i2.5 A (Buck 2 and 3)
: u2 \6 ]+ t* x1 c5 b% A3 n; dAdjustable Switching Frequency
" l- [3 E5 @% l$ d8 |300 kHz - 2.2 MHz Set By External Resistor
4 ]+ `$ Z1 N# ]" Z3 u( M# _External Synchronization Pin for Oscillator( A: f$ z( G, ], m
External Enable/Sequencing and Soft Start Pins( e/ ? ?& t- C! p0 x! [- g$ G
Adjustable Current Limit Set By External Resistor8 Q$ Q4 B, g/ g# |: M
Soft Start Pins
/ n) V. P# h* t3 `: m n- x8 oCurrent-Mode Control With Simple Compensation Circuit4 U; ]" s' x0 P+ Z9 b, s9 T
Power Good and Reset Generator
" C6 J' e4 }0 `9 p* f! J. P# ~( nStorage and Release Circuit Optimized for Reduction of Storage
& z2 j [5 o p& r& q$ D( n+ dCapacitance in Dying Gasp Mode (Option)
0 ^! S" p/ u! [- N% }6 i; Q \- PLow Power Mode Set By External Signal1 i% g0 V$ u8 e7 v+ j# c Y. O
QFN Package, 40-Pin 6 mm x 6 mm RHA |
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