Electronic Components Datasheet Search |
|
PT5548C Datasheet(PDF) 4 Page - Texas Instruments |
|
PT5548C Datasheet(HTML) 4 Page - Texas Instruments |
4 / 8 page For technical support and more information, see inside back cover or visit www.ti.com Application Notes Table 1: Input/Output Capacitors (1) N/R –Not recommended. The surge and normal voltage rating does not meet the minimum operating limits. Capacitor Recommendations for the PT5540 Boost Regulator Regulator Series Input Capacitors: The minimum input capacitance required is 100µF, with a 200-mA(rms) ripple current rating and 150m Ω typical equivalent series resistance (ESR). Electrolytic capacitors have marginal ripple performance at frequencies greater than 400kHz but have excellent low-frequency transient response. Above the ripple frequency, ceramic capacitors are necessary to improve the transient response and reduce any high frequency noise components apparent during higher current excursions. Preferred ESR type capacitor part numbers are identified in Table 2-1. Output Capacitor: The recommended output capacitance is determined by 0.5-A(rms) ripple current rating and 100µF minimum capacitance. The maximum output capacitance is 560µF. Ripple current and >50m Ω ESR value are the major considerations, along with temperature, when designing with different types of capacitors. Tantalum capacitors have a recommended minimum voltage rating of 2 × (the maximum DC voltage + AC ripple). This is necessary to insure reliability for input voltage bus applications. PT5540 Series Tantalum Capacitors (Optional Input Capacitors) Tantalum type capacitors can be used for the input bus but only the AVX TPS, Sprague 593D/594/595, or Kemet T495/T510 series. These capacitors are recommended over many other tantalum types due to their higher rated surge, power dissipation, and ripple current capability. As a caution the TAJ series by AVX is not recommended. This series has considerably higher ESR, reduced power dissipation, and lower ripple current capability. The TAJ series is less reliable than the AVX TPS series when deter- mining power dissipation capability. Tantalum or Oscon® types are recommended for applications where ambient temperatures fall below 0°C. Do not use tantalum capaci- tors on the output bus. Capacitor Table Table 1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple current ratings. The number of capacitors required at both the input and output buses is identified for each capacitor type. 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 critical parameters necessary to insure both optimum regulator performance and long capacitor life. / 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 .. .. .. .. .. .. .. ) g t M e c a f r u S ( ) g t M e c a f r u S ( K F / C F V 5 3 V 5 2 V 5 3 V 5 3 0 0 1 0 3 3 0 0 1 0 0 1 7 1 1 . 0 Ω 0 9 0 . 0 Ω 0 5 1 . 0 Ω 0 6 1 0 Ω A m 5 5 5 A m 5 5 7 A m 0 7 6 A m 0 0 6 5 . 1 1 x 8 0 1 × 5 . 2 1 2 . 0 1 x 0 1 2 . 0 1 x 8 1 1 1 1 1 1 1 1 1 0 1 V 1 C F U E E 1 3 3 E 1 C F U E E P 1 0 1 V 1 C F V E E 1 0 1 V 1 K F V E E P n o c - i m e h C d e t i n U s e i r e S V X L / Z X L ) g t M e c a f r u S ( Y V M V 5 3 V 5 2 V 5 2 0 5 1 0 2 2 0 3 3 0 2 1 . 0 Ω 0 2 1 . 0 Ω 0 5 1 . 0 Ω A m 5 5 5 A m 5 5 5 A m 0 7 6 2 1 x 8 2 1 x 8 0 1 × 3 . 0 1 1 1 1 1 1 1 L L 2 1 X 8 M 1 5 1 B V 5 3 Z X L L L 2 1 X 8 M 1 2 2 B V 5 2 Z X L P T 0 1 X 0 1 M 1 3 3 C V 5 2 Y V M n o c i h c i N s e i r e S M P X N V 5 3 V 5 2 V 6 1 0 2 1 0 8 1 0 5 1 0 5 1 . 0 Ω 0 5 1 . 0 Ω 6 2 0 . 0 Ω A m 5 5 5 A m 5 5 5 A m 0 0 3 3 5 . 2 1 x 0 1 5 . 2 1 x 0 1 8 x 0 1 1 1 1 1 1 R / N ) 1 ( 6 H P M 1 2 1 V 1 M P U 6 H P M 1 8 1 E 1 M P U S G 1 R C M 1 5 1 C 1 X N P : n o c - s O P S ) t n u o M e c a f r u s ( P V S V 0 2 V 0 2 0 2 1 0 0 1 4 2 0 . 0 Ω 4 2 0 . 0 Ω A m 0 0 1 3 A m 0 2 3 3 5 . 0 1 x 8 2 1 x 8 1 1 R / N ) 1 ( R / N ) 1 ( ( M 0 2 1 P S 0 2 ) t u o V o N ( M 0 0 1 P V S 0 2 ) t u o V o N m u l a t n a T X V A ) t g t M e c a f r u S ( S P T V 6 1 V 0 2 0 0 1 0 0 1 5 2 1 . 0 Ω 0 0 2 . 0 Ω A m 9 4 1 1 > A m 8 1 1 1 > L 3 . 7 × W 7 . 5 × H 1 . 4 1 1 R / N ) 1 ( R / N ) 1 ( ( 5 2 1 0 R 6 1 0 M 7 0 1 E S P T ) t u o V o N 0 0 2 0 R 6 1 0 M 7 0 1 V S P T ) t u o V o N ( m u l a t n a T t e m e K s e i r e S 5 9 4 T / 0 2 5 T (t n u o M e c a f r u S) V 0 1 V 0 1 0 0 1 0 0 1 0 8 0 . 0 Ω 0 0 1 . 0 Ω A m 0 0 7 1 A m 0 0 1 > W 3 . 4 × L 3 . 7 × H 0 . 4 1 1 R / N ) 1 ( R / N ) 1 ( S A 0 1 0 M 7 0 1 D 0 2 5 T ) t u o V o N ( S A 0 1 0 M 7 0 1 X 5 9 4 T ) t u o V o N ( 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 6 10 0 15 7 0 . 0 Ω A m 0 1 4 1L 2 . 7 × W 6 × H 1 . 4 1R / N ) 1 ( T 2 D 6 1 0 0 X 7 0 1 D 4 9 5 |
Similar Part No. - PT5548C |
|
Similar Description - PT5548C |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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 |