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tps65250/1,你看看咋样,够用吗?
" x. `, S- \0 X9 \+ L4 k: q3 a0 Q1 m
Input Supply Voltage Range
7 v A$ \) o; Z: q(4.5 V - 18 V)5 O( i2 r+ J- i! K- |& B5 a
0.8 V, 1% Accuracy Reference0 |# a* I2 }4 w4 q
Continuous Loading: 3 A (Buck 1),
" T0 ?, U, T( Q# u4 n2 A (Buck 2 and 3)$ J5 D, D7 [" t
Maximum Current: 3.5 A (Buck 1), ! T- t5 n2 `' t+ D1 j/ u
2.5 A (Buck 2 and 3)5 O$ v. B+ x( y0 m' r
Adjustable Switching Frequency ) c1 T: |; ~, n4 T. X; d* m" [
300 kHz - 2.2 MHz Set By External Resistor* j. ^1 e" z! R* L% C
External Synchronization Pin for Oscillator+ @9 |* D8 `% P( \
External Enable/Sequencing and Soft Start Pins9 _. ]8 E1 M2 S) G3 X
Adjustable Current Limit Set By External Resistor- w( r/ s1 t9 m: @- ]
Soft Start Pins7 U" _1 [1 n1 s
Current-Mode Control With Simple Compensation Circuit% N: N- G8 H7 o( \1 \! Z- |$ M
Power Good and Reset Generator
% Q7 a' d# c* QStorage and Release Circuit Optimized for Reduction of Storage & j' a+ f6 M" S0 o2 A1 F# j4 I
Capacitance in Dying Gasp Mode (Option)
: v. F( E0 O4 n5 K* \+ n: lLow Power Mode Set By External Signal
5 e, ^* i' ^6 Y3 H8 V. x0 }( ^4 zQFN Package, 40-Pin 6 mm x 6 mm RHA |
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