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本帖最后由 2355368874 于 2022-8-23 09:17 编辑
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General Description
2 W1 S" p3 e% [' `/ v: v( p" N9 T oThe SL1588H is a low EMI signature, asynchronous, step-down, switch-mode converter with internal power MOSFETs.4 Q: Z5 W: B* k8 {& _* d9 w8 L
It offers a very compact solution to provide a 2A continuous current over a wide input supply range, with excellent load1 U1 `. G) l K/ ~7 C: x" N1 m
and line regulation. S L158 achieves low EMI signature with well controlLED switching edges. Fault condition4 b1 }1 \* G, n- M" D& i7 U
protection includes programmable-output over-voltage protection, Constant on time Mode, and thermal shutdown.
6 i* `: s9 U4 B Q+ }0 ~* _SL158 8 H requires a minimal number of readily available standard external components. It is available in SOT23-6 package.
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Features* [/ w) F( U+ t
• Wide 4.5V to 36V Operating Input Range
( `9 F5 Q- [* @9 s+ [• 2.0A Continuous Output Current
$ M4 `. _4 B' g1 ?8 g9 Z: V5 ?8 h• 500KHz Switching Frequency
2 ~- q' h' n) }( T* F8 ]• Short Protection with Hiccup-Mode3 ]1 g' f G' Z0 k7 m
• Built-in Over Current Limit
" G2 E1 ]; Q3 u- R• Programmable Output Over-Voltage Protection; I& V2 I4 Y- X3 ~2 N% s6 e
• DCM Mode for High Efficiency in Light Load
/ B" J W$ y# B. x* W" A9 H• Integrated internal Soft-Start
! i6 Q3 J6 @/ e( {# G• 120/80mΩ Low RDS(ON) Internal MOSFETs
: {! b2 N7 Q5 i9 |5 E• Output Adjustable from 0.6V i# a$ z0 _- _/ o7 p( n9 f2 R
• Low EMI Signature3 B9 b2 {) Z. A( O) R) B; i
• 99% Duty cycle3 G; J, O e q
• Integrated internal compensation! k' }3 i8 Y& T3 W) |' ~! H: }
• Thermal Shutdown1 }* ^9 h" y& p2 }% O
• Available in SOT23-6 Package
! ? ~2 b: a7 i! M; w$ V# D• Constant on time Mode
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Applications
. Z4 q& [) y) [ v. l6 z• Automotive Entertainment5 F3 ^+ L9 o% S$ t; `
• Wireless and DSL modems
5 e! e' M+ X) j& s0 l• Computer Entertainment/ j3 N7 ?6 ?* T- z( a7 l
• Power Supply for Car Chargers
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& S8 R1 N4 |6 ^3 F3 @+ N9 ~8 F, ETypical Application Circuit: w& c# Z# O5 Y) B$ ], X
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