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tps65250/1,你看看咋样,够用吗?
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2 G* e5 Y% t0 t: {2 w5 sInput Supply Voltage Range
d& `% ^0 `5 n(4.5 V - 18 V)1 o( A. L0 y* A
0.8 V, 1% Accuracy Reference; V" E: K R" z' F+ L* u
Continuous Loading: 3 A (Buck 1), . P+ Y, |" A8 D( M
2 A (Buck 2 and 3)* j4 [6 H& `, @/ u1 T, Q* d
Maximum Current: 3.5 A (Buck 1),
. k+ ^% [2 C0 j) ^$ i2 E) m( Y2.5 A (Buck 2 and 3)
A& \$ C9 g; n J! T- e. G7 zAdjustable Switching Frequency 7 }4 S! x& N4 P- |5 W0 Y
300 kHz - 2.2 MHz Set By External Resistor5 K. T# P+ i: B2 z& Q5 t
External Synchronization Pin for Oscillator
9 A2 g3 E8 M+ d* D5 ^$ ~External Enable/Sequencing and Soft Start Pins
7 h% \8 @; `# Y+ j' b' nAdjustable Current Limit Set By External Resistor4 H& K+ \5 b: X) F& c
Soft Start Pins
& d! n: X- u! U9 W* }9 bCurrent-Mode Control With Simple Compensation Circuit( [3 ]% ?' Q; v7 ^% z0 j2 M
Power Good and Reset Generator7 p! R: D& v( d" Y I9 o
Storage and Release Circuit Optimized for Reduction of Storage
2 M- L2 O: R; [) W0 ?! A% n* {Capacitance in Dying Gasp Mode (Option)% m* ]7 Z2 e/ E
Low Power Mode Set By External Signal
% O S( L* \6 A P4 BQFN Package, 40-Pin 6 mm x 6 mm RHA |
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