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tps65250/1,你看看咋样,够用吗?
" W( _0 M" I7 E: Z/ V" c5 s2 \% h
5 F& s- }7 Z: M+ cInput Supply Voltage Range
9 G; Q3 H/ L6 W' q9 Y3 A3 ~(4.5 V - 18 V)
) t |3 W- L" a- ?4 |. @0.8 V, 1% Accuracy Reference
8 x. c4 `% t( ^- b% ZContinuous Loading: 3 A (Buck 1),
7 |4 y- H% A d6 a$ N/ J2 A (Buck 2 and 3)
6 u) |% z1 Z$ }% H$ [' Z2 D' H0 i6 GMaximum Current: 3.5 A (Buck 1), 6 {7 k- d0 i9 M4 [9 A N0 q4 h9 E
2.5 A (Buck 2 and 3)2 J6 z7 p7 Q# b0 ]" P' G% s
Adjustable Switching Frequency
, N% W# f9 p* W1 F300 kHz - 2.2 MHz Set By External Resistor* w( P" D- e5 ]5 i# ?" L0 F
External Synchronization Pin for Oscillator
' M; G3 R( @; y& G, T7 RExternal Enable/Sequencing and Soft Start Pins7 I+ k2 a( i5 F2 x
Adjustable Current Limit Set By External Resistor5 c4 p& ~" }) i
Soft Start Pins
2 C Z' X% r" j9 E; H" R; }Current-Mode Control With Simple Compensation Circuit
, {& g m. q' I0 s, } g/ ?$ YPower Good and Reset Generator
( \: k# _) t" K5 q* v) NStorage and Release Circuit Optimized for Reduction of Storage
1 b8 k' X2 Q- c6 CCapacitance in Dying Gasp Mode (Option). I q/ v0 [" ^- j1 t3 S1 {
Low Power Mode Set By External Signal
7 f3 M; l% d4 B5 M5 B! ^QFN Package, 40-Pin 6 mm x 6 mm RHA |
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