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本帖最后由 2355368874 于 2022-8-23 09:17 编辑
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% q$ a, a9 H$ m0 _General Description
; z3 H3 r* O5 C" k- v& GThe SL1588H is a low EMI signature, asynchronous, step-down, switch-mode converter with internal power MOSFETs.
0 W. V6 }* [' ^# N# fIt offers a very compact solution to provide a 2A continuous current over a wide input supply range, with excellent load9 Y2 Z- v3 {3 D* Z) z5 {0 Z) Q
and line regulation. S L158 achieves low EMI signature with well controlLED switching edges. Fault condition
3 v; C4 e: `6 f r1 a4 B5 y4 Q' Rprotection includes programmable-output over-voltage protection, Constant on time Mode, and thermal shutdown.5 q7 _2 g6 m3 H4 T% P' y2 {
SL158 8 H requires a minimal number of readily available standard external components. It is available in SOT23-6 package.* N" M& R8 A6 T3 }9 }/ t5 ?
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Features
( n6 x9 k" C3 `• Wide 4.5V to 36V Operating Input Range! N8 M. p4 K5 Y; u( D
• 2.0A Continuous Output Current
! E" v- Q3 F! A• 500KHz Switching Frequency6 N; l2 G0 y$ J3 `; H
• Short Protection with Hiccup-Mode0 k# `5 m! j4 A* p+ R8 o% k
• Built-in Over Current Limit" D9 u+ i0 e- d2 P
• Programmable Output Over-Voltage Protection
8 ^# q1 e0 t8 t• DCM Mode for High Efficiency in Light Load* {5 ]: L3 b- L7 h* E
• Integrated internal Soft-Start
& f3 m1 y! l9 L• 120/80mΩ Low RDS(ON) Internal MOSFETs
% C9 K) d3 a: U3 S• Output Adjustable from 0.6V' e v+ L. `. n( ~' [
• Low EMI Signature2 k% n0 l6 W5 M0 {2 m7 ?
• 99% Duty cycle3 X/ |- R4 e3 [% P$ y
• Integrated internal compensation0 Q+ B# ~+ _, n/ n: D' q
• Thermal Shutdown6 I& d( T# J$ @! ~, T9 _
• Available in SOT23-6 Package/ @4 J+ s6 y |, H% d( T- Y5 x
• Constant on time Mode
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Applications
1 X6 a8 ?: m& ?# t; f% z- D• Automotive Entertainment, @% z4 \- J3 T; y* ~' @! D& B
• Wireless and DSL modems
; ~2 R- a( y0 F4 u* Q• Computer Entertainment
7 T0 ]# w9 d+ S8 \; S* s• Power Supply for Car Chargers
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Typical Application Circuit
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发表于 2022-8-22 15:53
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