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本帖最后由 2355368874 于 2022-8-23 09:17 编辑 / D |$ Y3 [# Q- ?1 d* i4 M9 K: }7 y
: L( K. f h, J$ k- B/ [* WGeneral Description
" Y" L7 Q v# e5 t3 b# @7 R# ]9 KThe SL1588H is a low EMI signature, asynchronous, step-down, switch-mode converter with internal power MOSFETs.
6 y4 _4 N: e0 e1 qIt offers a very compact solution to provide a 2A continuous current over a wide input supply range, with excellent load. K4 I, A; E3 U6 A% c
and line regulation. S L158 achieves low EMI signature with well controlLED switching edges. Fault condition! k; a H+ f; L) @ |
protection includes programmable-output over-voltage protection, Constant on time Mode, and thermal shutdown.$ {0 R0 a5 O. o
SL158 8 H requires a minimal number of readily available standard external components. It is available in SOT23-6 package.
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% y! D9 B8 i; \9 _5 v5 dFeatures
" W9 F5 f& Y/ O1 [+ _* q• Wide 4.5V to 36V Operating Input Range
9 w H; p: I- V$ L3 T, X• 2.0A Continuous Output Current* |' d$ Q9 P' y1 ` y
• 500KHz Switching Frequency4 ^ U2 @8 A- q4 ^
• Short Protection with Hiccup-Mode# g& o, I# {6 x7 e
• Built-in Over Current Limit
+ R8 ? q3 @& p; c: ~2 E1 u• Programmable Output Over-Voltage Protection
) M) e0 h9 e5 _/ T" X w, G• DCM Mode for High Efficiency in Light Load
' |) g7 X9 w8 j3 q3 N" H+ D( I• Integrated internal Soft-Start
' X, ?/ B2 I5 s8 U1 L# I: t• 120/80mΩ Low RDS(ON) Internal MOSFETs, s1 N+ F9 E/ N8 Z7 i
• Output Adjustable from 0.6V
2 Z# q' d: |* r/ K* u• Low EMI Signature1 T! Y4 L8 `. N* m( U
• 99% Duty cycle
2 f: K6 c; s3 q" N1 q B/ A: Z• Integrated internal compensation6 U7 |! p8 r" T% x E$ o! P
• Thermal Shutdown
~/ N( h+ p* t2 i, R4 t• Available in SOT23-6 Package- A' e0 A) V7 z8 U/ `( L
• Constant on time Mode
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+ a4 [# |$ W5 z/ W4 yApplications
3 [- j; |5 [$ Y& ]• Automotive Entertainment
# d9 l5 w- z( r% E4 Q( s; G/ p6 t• Wireless and DSL modems
( q$ s- U+ Z; N; X4 [• Computer Entertainment/ q( A# I0 w/ i+ l5 O) ]
• Power Supply for Car Chargers
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Typical Application Circuit
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