Electronic Components Datasheet Search |
|
SLTS102A Datasheet(PDF) 4 Page - Texas Instruments |
|
SLTS102A Datasheet(HTML) 4 Page - Texas Instruments |
4 / 8 page Application Notes For technical support and more information, see inside back cover or visit www.ti.com PT6721/22 & PT6725 Series Capacitor Recommendations for the 12V-Input PT6721/22 and PT6725 Series of ISRs Input Capacitors The recommended input capacitor(s) is determined by 1.6Arms minimum ripple current rating and 1,000µF mini- mum capacitance. Ripple current and Equivalent Series Resistance (ESR) values are the major considerations along with temperature when selecting the proper capacitor. The tantalum capacitors listed below cannot be used on the input bus since they are not rated for 12V operation. Output Capacitors The minimum required output capacitance is 330µF with a maximum ESR less than or equal to 50m Ω. Failure to observe this requirement may lead to regulator instability or oscillation. Electrolytic capacitors have poor ripple performance at frequencies greater than 400kHz, but excellent low frequency transient response. Above the ripple frequency ceramic decoupling capacitors are nec- essary to improve the transient response and reduce any microprocessor high frequency noise components apparent during higher current excursions. Preferred low ESR type capacitor part numbers are identified in the Table 1 below. / r o d n e V r o t i c a p a C s e i r e S s c i t s i r e t c a r a h C r o t i c a p a Cy t i t n a u Q g n i k r o W e g a t l o V ) F µ ( e u l a Vt n e l a v i u q E ) R S E ( e c n a t s i s e R s e i r e S m u m i x a M C ° 5 0 1 e l p p i R ) s m r I ( t n e r r u C l a c i s y h P ) m m ( e z i S t u p n I s u B t u p t u O s u B r e b m u N t r a P r o d n e V c i n o s a n a P ) l a i d a R ( C F ) t n u o M e c a f r u S ( K F / C F V 5 3 V 5 2 V 5 2 V 0 5 V 5 2 V 5 3 0 8 6 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 7 4 3 4 0 . 0 Ω 8 3 0 . 0 Ω 8 3 0 . 0 Ω 3 7 0 0 Ω 8 3 0 . 0 Ω 3 4 0 . 0 Ω A m 5 5 6 1 A m 5 5 6 1 A m 0 9 6 1 A m 0 1 6 1 A m 0 0 0 2 A m 0 9 6 1 5 . 2 1 × 0 2 5 . 2 1 × 0 2 6 1 × 5 1 6 1 × 5 . 6 1 8 1 × 5 . 6 1 6 1 × 5 . 6 1 2 1 1 1 1 2 1 2 1 1 1 1 1 8 6 V 1 C F U E E 2 0 1 E 1 C F U E E S 2 0 1 E 1 C F U E E M 2 0 1 H 1 K F V E E N 2 0 1 E 1 C F V E E N 1 7 4 V 1 C F V E E n o c - i m e h C d e t i n U s e i r e S V X L V 5 3 V 5 3 V 6 1 0 8 6 0 0 0 1 0 7 4 4 3 0 . 0 Ω 8 3 0 . 0 Ω 4 8 0 . 0 ÷ Ω 2 4 0 . 0 = 2 Ω A m 0 9 6 1 A m 0 3 6 1 ( A m 5 2 8 × ) 2 5 . 2 1 × 5 2 6 1 × 0 2 0 1 × 6 1 2 1 2 1 1 1 L L 5 2 X 2 1 M 0 8 6 B V 5 3 V X L L L 0 2 X 6 1 M 2 0 1 B V 5 3 V X L L L 6 1 X 0 1 M 1 7 4 B V 6 1 V X L n o c i h c i N s e i r e S L P s e i r e S M P V 5 3 V 5 2 V 5 3 0 8 6 0 0 2 1 0 0 0 1 6 3 0 . 0 Ω 9 3 0 . 0 Ω 4 3 0 . 0 Ω A m 0 6 6 1 A m 0 0 6 1 A m 0 7 7 1 5 . 2 1 × 5 2 8 1 × 5 1 6 1 × 0 2 2 1 1 1 1 1 H H M 1 8 6 V 1 L P U 6 H H M 2 2 1 E 1 L P U 6 H H M 2 0 1 V 1 M P U : n o c - s O S S ) t n u o M e c a f r u s ( V S V 0 1 V 0 1 0 3 3 0 3 3 5 2 0 . 0 Ω 0 2 0 . 0 Ω A m 0 0 5 3 A m 0 0 8 3 0 1 × 5 . 0 1 3 . 0 1 × 3 . 0 1 ) 1 ( R / N ) 1 ( R / N 1 1 V ( M 0 3 3 S S 0 1 o ) V 5 < V ( 0 3 3 V S 0 1 o ) V 5 < m u l a t n a T X V A ) t n u o M e c a f r u S ( S P T V 0 1 V 0 1 0 3 3 0 3 3 1 . 0 ÷ Ω 5 0 . 0 = 2 Ω 6 0 . 0 ÷ Ω 3 0 . 0 = 2 Ω A m 0 0 5 2 > A m 0 0 0 3 > L 3 . 7 × W 7 . 5 × H 1 . 4 ) 1 ( R / N ) 1 ( R / N 2 2 0 0 1 0 R 0 1 0 M 7 3 3 E S P T 0 6 0 0 R 0 1 0 M 7 3 3 V S P T m u l a t n a T t e m e K s e i r e S 5 9 4 T / 0 1 5 T (t n u o M e c a f r u S) V 0 1 V 0 1 0 3 3 0 2 2 3 3 0 . 0 Ω 7 0 . 0 ÷ Ω 5 3 0 . 0 = 2 Ω A m 0 0 4 1 A m 0 0 0 2 > W 3 . 4 × L 3 . 7 × H 0 . 4 ) 1 ( R / N ) 1 ( R / N 1 2 S A 0 1 0 M 7 3 3 X 0 1 5 S A 0 0 1 0 M 7 2 2 X 5 9 4 T m u l a t n a T e u g a r p S s e i r e S D 4 9 5 (t n u o M e c a f r u S) V 0 10 3 35 4 0 . 0 Ω A m 0 6 3 2L 2 . 7 × W 6 × H 1 . 4 ) 1 ( R / N1 T 2 R 0 1 0 0 X 7 3 3 D 4 9 5 Note: (N/R -Not recommended) The 10V-rated tantalum capacitors cannot be used on the input bus. Table 1 Capacitors Characteristic Data Tantalum Characteristics Tantalum capacitors are recommended on the output bus but only AVX TPS Series, Sprague 593D/594/595 Series, or Kemet T495/T510 Series. These capacitors are recom- mended over other types due to their higher surge current, excellent power dissipation and ripple current ratings. As a caution, the TAJ Series by AVX is not recommended. This series exhibits considerably higher ESR, reduced power dissipation and lower ripple current capability. The TAJ Series is also less reliable compared to the TPS series when determining power dissipation capability. Capacitor Table Table 1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple cur- rent (rms) ratings. The suggested minimum quantities per regulator for both the input and output buses are identified. This is not an extensive capacitor list. Capacitors from other vendors are available with comparable specifications. Those listed are for guidance. The RMS ripple current rating and ESR (Equivalent Series Resistance at 100kHz) are the critical parameters are necessary to insure both optimum regulator performance and long capacitor life. |
Similar Part No. - SLTS102A |
|
Similar Description - SLTS102A |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |