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tps65250/1,你看看咋样,够用吗?% K2 y/ Z/ W: d; g
3 F! N, t8 W, I5 kInput Supply Voltage Range
4 {3 [: |) x8 \% B(4.5 V - 18 V)
A) V. M& E3 |% F1 Z3 y$ C0.8 V, 1% Accuracy Reference/ O! `5 L+ d- r3 `. H3 j$ X: z+ I
Continuous Loading: 3 A (Buck 1),
% f2 }: H7 s3 M: L2 A (Buck 2 and 3)# ?( ~8 r% }4 Q1 e% t) P
Maximum Current: 3.5 A (Buck 1),
; C2 h9 H1 l7 q/ G! Z: Y( b2.5 A (Buck 2 and 3)/ @" k/ ?1 l T( A5 ^6 {* e
Adjustable Switching Frequency ' i3 j0 l" e' }7 s
300 kHz - 2.2 MHz Set By External Resistor+ U1 A% k$ [9 r# \
External Synchronization Pin for Oscillator. x" ^$ v, D1 g# l9 I. G
External Enable/Sequencing and Soft Start Pins1 F2 B4 ?& v) u0 E
Adjustable Current Limit Set By External Resistor
4 H5 V6 x# W4 o1 X4 ^4 l* Y8 M- C) {Soft Start Pins8 [3 k0 K; }1 G0 `7 R, e) I8 u5 s
Current-Mode Control With Simple Compensation Circuit1 V: S$ L! F* Y
Power Good and Reset Generator7 ~: {+ V; j9 N! O) b
Storage and Release Circuit Optimized for Reduction of Storage
9 W' Y0 y4 m, f: z, P! c" i' z8 U( KCapacitance in Dying Gasp Mode (Option)( R5 t2 }! o; N+ ^/ y4 b9 \' F" X
Low Power Mode Set By External Signal) x! o/ A" I3 m: x) p7 C
QFN Package, 40-Pin 6 mm x 6 mm RHA |
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