TPS743xx TPS743xx TPS743xx www.tij.co.jp ADJUSTABLE VOLTAGE VERSION V IN IN IN PG V PG V EN TPS7431 R 5 V R 1 V TRAK R 3 TRAK GND FB R 2 I = 5mA R 4 Optional V PG V TRAK V IN FIXED VOLTAGE VERSION 5mV/div V IN IN EN TPS743xx PG R 5 V PG V V V TRAK R 3 TRAK GND SNS Time (2ms/div) R 4 Optional 1. 2. http://www.ti.com/lit/gpn/tps7431
(1) PRODUT V (2) TPS743xx yyy z XX is nominal output voltage (for example, 12 = 1.2V, 15 = 1.5V, 1 = Adjustable). (3) YYY is package designator. Z is package quantity. (1) TPS743xx V IN,V Input voltage range.3 +6 V V EN Enable voltage range.3 +6 V V PG Power-good voltage range.3 +6 V I PG PG sink current +1.5 ma V TRAK Track pin voltage range.3 +6 V V FB Feedback pin voltage range.3 +6 V V Output voltage range.3 V IN +.3 V I Maximum output current Internally limited Output short circuit duration Indefinite P DISS ontinuous total power dissipation T J Operating junction temperature range 4 +125 T STG Storage junction temperature range 55 +15 (1)(2) DERATING FATOR ABOVE POWER RATING POWER RATING POWER RATING PAKAGE θ JA T A = +25 T A < +25 T A = +7 T A = +85 RGW (QFN) 3.5 /W 32.8mW/ 3.28W 1.8W 1.31W KTW (DDPAK) 2.1 /W 49.8mW/ 4.98 2.74W 2.W Ψ Ψ 2
µ µ TPS743xx MIN TYP MAX V IN Input voltage range V +V DO 5.5 V V Bias pin voltage range 2.375 5.25 V V REF Internal reference (Adj.) T J = +25.796.8.84 V Output voltage range V IN = 5V, I =1.5A, V =5V V REF 3.6 V V 2.375V V 5.25V, V +1.62V V Accuracy (1) 5mA I 1.5A 1 ±.2 1 % V /V IN Line regulation V (NOM) +.3 V IN 5.5V, QFN.5.5 V (NOM) +.3 V IN 5.5V, DDPAK.5.6 %/V V /I Load regulation ma I 5mA.13 %/ma 5mA I 1.5A.4 %/A I =1.5A, V V (NOM) 1.62V, QFN 55 1 V DO V IN dropout voltage (2) I =1.5A, V V (NOM) 1.62V, DDPAK 6 12 mv V dropout voltage (2) I =1.5A, V IN =V 1.4 V I L urrent limit V = 8% V (NOM) 1.8 4 A I Bias pin current I = ma to 1.5A 2 4 ma I SHDN Shutdown supply current (V IN ) V EN.4V 1 1 µa I FB,I SNS Feedback, Sense pin I = 5mA to 1.5A 25 68 25 na current (3) 1kHz, I =1.5A, V IN =1.8V, V =1.5V 73 PSRR Power-supply rejection (V IN to V ) 8kHz, I =1.5A, V IN =1.8V, V =1.5V 42 Power-supply rejection 1kHz, I =1.5A, V IN =1.8V, V =1.5V 67 (V to V ) 8kHz, I =1.5A, V IN =1.8V, V =1.5V 5 db db Noise Output noise voltage 1Hz to 1kHz, I =1.5A 25 V µv RMS V TRAN %V droop during load transient I = 5mA to 1.5A at 1A/os, = none 3.5 %V t STR Minimum startup time V TRAK >.8V 4 µs T A Track pin accuracy.2v V TRAK.7V, V =.8V 6 6 mv I TR Track pin current V TRAK =.4V.1 1 µa V EN, HI Enable input high level 1.1 5.5 V V EN, LO Enable input low level.4 V V EN, HYS Enable pin hysteresis 5 mv V EN, DG Enable pin deglitch time 2 µs I EN Enable pin current V EN =5V.1 1 µa V IT PG trip threshold V decreasing 86.5 9 93.5 %V V HYS PG trip hysteresis 3 %V V PG, LO PG output low voltage I PG = 1mA (sinking), V <V IT.3 V I PG, LKG PG leakage current V PG =5.25V, V >V IT.3 1 µa T J Operating junction temperature 4 +125 T SD Thermal shutdown Shutdown, temperature increasing +155 temperature Reset, temperature decreasing +14 3
IN urrent Limit V TRAK UVLO V < V = 1, V > V = TRAK REF TRAK REF 1 Thermal Limit R 1.8V Reference FB V =.8 x ( 1+ R 1 ) R 2 PG EN Hysteresis and De-Glitch R 2.9 V REF GND 3. IN urrent Limit V TRAK UVLO V < V = 1, V > V = TRAK REF TRAK REF 1 Thermal Limit R SMALL R 1 SNS.8V Reference R 2 PG EN Hysteresis and De-Glitch.9 V REF GND 4. 4
R 1 (kω) R 2 (kω) R (V) Short Open.8.619 4.99.9 1.13 4.53 1. 1.37 4.42 1.5 1.87 4.99 1.1 2.49 4.99 1.2 4.12 4.75 1.5 3.57 2.87 1.8 3.57 1.69 2.5 3.57 1.15 3.3 1. RGW PAKAGE KTW PAKAGE 5 5 QFN-2 DDPAK-7 (TOP VIEW) SURFAE-MOUNT 5 4 3 2 1 IN N N N IN 6 2 IN 7 19 IN PG 8 9 TPS743xx GND 18 17 N 1 2 3 4 5 6 7 1 EN 11 GND 12 N 13 N 14 TRAK 15 16 FB/SNS TRAK IN EN FB/ GND SNS NAME KTW (DDPAK) RGW (QFN) IN 5 5 8 EN 7 11 TRAK 1 15 PG 6 N/A 1 9 ΩΩ FB SNS 2 16 N 3 N/A 1, 18 2 2 4, 13, 14, 17 GND 4 12 PAD/TAB 5
µ µ µ µ hange in V (%) 1..9.8.7.6.5.4.3.2.1 Referred to I = 5mA 4 +125 +25 LOAD REGULATION hange in V (%).5.25.25.5.75.1.125 Referred to I = 5mA LOAD REGULATION +25 4 +125.1 1 2 3 4 I (ma) 5.15 5 5 1 I (ma) 15 5 6.5 LINE REGULATION 1 V IN DROP VOLTAGE vs I AND TEMPERATURE (T J ).4 hange in V (%).3.2.1.1.2.3 T J = 4 T J = +125 T J = +25 Dropout Voltage (mv) 75 5 25 +125 +25 4.4.5.5 1. 1.5 2. 2.5 3. 3.5 4. 4.5 VIN V (V) 7.5 1. I (A) 8 1.5 V IN DROP VOLTAGE vs V V AND TEMPERATURE (T J ) V IN DROP VOLTAGE vs V V AND TEMPERATURE (T J ) 2 18 16 I = 1.5A 6 5 I = 5mA Dropout Voltage (mv) 14 12 1 8 6 4 2 4 +125 +25 Dropout Voltage (mv) 4 3 2 1 +125 +25 4.9 1.4 1.9 2.4 2.9 3.4 3.9 V V (V) 9.9 1.4 1.9 2.4 2.9 3.4 V V (V) 1 3.9 6
µ µ µ µ Dropout Voltage (mv) 14 13 12 11 1 9 8 7 6 V DROP VOLTAGE vs I AND TEMPERATURE +125 +25 4 Power-Supply Rejection (db) 9 8 7 6 5 4 3 2 1 V PSRR vs FREQUENY I = 1.5A 5 5 5 1 I (ma) 15 1 1 1k 1k 1k 1M 1M Frequency (Hz) 11 12 Power-Supply Rejection Ratio (db) V IN PSRR vs FREQUENY 1 V IN = 1.8, V = 1.5V,I =1mA 9 8 = 1µ F = 1µ F 7 6 5 4 3 2 = µ F 1 1 1 1k 1k 1k 1M 1M Frequency (Hz) 13 Power-Supply Rejection Ratio (db) V IN PSRR vs FREQUENY 1 V IN = 1.8, V = 1.5V,I =1.5A 9 8 7 = 1µ F 6 = 1µ F 5 4 3 2 1 = µ F 1 1 1k 1k 1k 1M 1M Frequency (Hz) 14 V IN PSRR vs V IN V NOISE SPETRAL DENSITY Power-Supply Rejection Ratio (db) 9 8 7 6 5 4 3 2 1 1kHz 7kHz 3kHz 1kHz I = 1.5A Hz ) Output Spectral Noise Density (µv/ 1.1 I = 1.5A V = 1.1V.25.5.75 1. 1.25 1.5 1.75 2. 2.25 2.5 VIN V (V).1 1 1k 1k Frequency (Hz) 1k 15 16 7
µ µ µ µ I vs I AND TEMPERATURE I vs V AND V 2.85 3. Bias urrent (ma) 2.65 2.45 2.25 2.5 1.85 1.65 1.45 +125 +25 4 Bias urrent (ma) 2.8 2.6 2.4 2.2 2. 1.8 1.6 1.4 1.2 +125 +25 4 1.25.5 1. 1.5 1. 2. 2.5 3. 3.5 4. 4.5 5. I (A) V (V) 17 18 I SHUTDOWN vs TEMPERATURE LOW-LEVEL PG VOLTAGE vs PG URRENT.45 1. Bias urrent ( µ A).4.35.3.25.2.15.1.5 V = 2.375V V = 5.5V V OL Low-Level PG Voltage (V).9.8.7.6.5.4.3.2.1 4 2 2 4 6 8 1 Junction Temperature ( ) 12 2 4 6 8 1 12 PG urrent (ma) 19 2 V LINE TRANSIENT V IN LINE TRANSIENT (1.5A) 2mV/div 2mV/div 2mV/div 2mV/div = 2 47µ F (OSON) = 1µ F (er.) = 1µ F (er.) = µ F 1mV/div 1mV/div 1mV/div 1mV/div = 2 47µ F (OSON) = 1µ F (er.) = 1µ F (er.) = µ F 2.5V V = 1.2V 1V/div 3.3V 4.3V 4.3V 1V/ µ s 5mV/div 1.5V 1V/ µ s Time (5µ s/div) 21 Time (5µ s/div) 22 8
µ µ µ µ PUT LOAD TRANSIENT RESPONSE TRAKING RESPONSE 5mV/div 5mV/div 5mV/div 5mV/div = 2 47µ F (OSON) = 1µ F (er.) = 1µ F (er.) = µ F 5mV/div V PG V TRAK I = 5mA 1A/div 5mA 1A/ µ s 1.5A V Time (5µ s/div) Time (2ms/div) 23 24 POWER-UP/POWER-DOWN TURN-ON RESPONSE QFN PAKAGE V PG (5mV/div) V IN = V =VEN V TRAK = VIN I = 1.5A 1V/div 1V/div V V 1.1V 1V/div V V EN Time (2ms/div) 25 Time (5µ s/div) 26 PUT SHORT-IRUIT REOVERY I 5mA/div Output Shorted V 5mV/div Output Open Time (2µ s/div) 27 9
V IN V V TRAK R 3 R 4 IN IN EN TRAK TPS7431 GND V =.8 ( 1+ R 1 R ) 2 PG FB R 5 R 1 R 2 V PG V Optional V IN IN IN PG V PG TPS743xx R EN 5 V V V TRAK SNS R TRAK 3 GND R Optional 4 29. µ µ 28. Ω 1
Reference IN V = 5V ± 5% V IN = 1.8V V = 1.5V I = 1.5A Efficiency = 83% Reference Simplified Block Diagram 31. IN V IN V = 3.3V ± 5% V IN = 3.3V ± 5% V = 1.5V I = 1.5A Efficiency = 45% FB V V Simplified Block Diagram FB 3. 11
5V R 3 32.4kΩ R 4 1kΩ TPS7421 LDO1 (1) 3.3V IN PG EN SS R 1 R 2 I/O DSP µ TPS7431 LDO2 (1) IN PG 1.2V ORE µ Ω EN TRAK V SIMULA T NEOUS SEQUENING I/O ORE RATIOMETRI SEQUENING (2) I/O ORE Tme i V ORE.8 V IO.88 R 1 =.88 R 2 32. Ω R 1 =.8 R 2 ΩΩ 12
µ ( ) P D = I (1) V IN V R θja = θ θ JA ( /W) 12 1 8 6 4 ( ) +125 P D θ JA (RGW) 2 θ JA (KTW) 1 2 3 4 5 6 7 8 9 1 Board opper Area (in 2) θ 33. θ T A (2) 13
Ψ Ψ Ψ Ψ θ Ψ JT : T J = T T + Ψ JT P D Ψ JB : T J = T B + Ψ JB P D (3) Ψ JT Ψ JB θ J,Top RGW (QFN).37 /W 1.4 /W 27.6 /W KTW (DDPAK) 4.2 /W 6.1 /W 2.1 /W 2. TB on PB TT on top of I (1) TT on top of I 1mm TB on PB (2) surface 1mm 34. 14
θ Ψ Ψ Ψ Ψ Ψ Ψ θ 12 ΨJT and ΨJB (/W) 1 8 6 4 2 Ψ JB (RGW) Ψ JB (KTW) Ψ JT (KTW) Ψ JT (RGW) 2 4 6 8 1 Board opper Area (in 2) 35. Ψ Ψ 15
Orderable Device Status (1) Package Type Package Drawing Pins Package Qty TPS7431KTWR ATIVE DDPAK KTW 7 5 Green (RoHS & no Sb/Br) TPS7431KTWRG3 ATIVE DDPAK KTW 7 5 Green (RoHS & no Sb/Br) TPS7431KTWT ATIVE DDPAK KTW 7 5 Green (RoHS & no Sb/Br) TPS7431KTWTG3 ATIVE DDPAK KTW 7 5 Green (RoHS & no Sb/Br) TPS7431RGWR ATIVE VQFN RGW 2 3 Green (RoHS & no Sb/Br) TPS7431RGWRG4 ATIVE VQFN RGW 2 3 Green (RoHS & no Sb/Br) TPS7431RGWT ATIVE VQFN RGW 2 25 Green (RoHS & no Sb/Br) TPS7431RGWTG4 ATIVE VQFN RGW 2 25 Green (RoHS & no Sb/Br) Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3) U SN U SN U SN U SN U NIPDAU U NIPDAU U NIPDAU U NIPDAU Level-3-245-168 HR Level-3-245-168 HR Level-3-245-168 HR Level-3-245-168 HR Level-2-26-1 YEAR Level-2-26-1 YEAR Level-2-26-1 YEAR Level-2-26-1 YEAR 16
REEL DIMENSIONS TAPE DIMENSIONS K P1 Reel Diameter avity A B W A B K W P1 Dimension designed to accommodate the component width Dimension designed to accommodate the component length Dimension designed to accommodate the component thickness Overall width of the carrier tape Pitch between successive cavity centers Reel Width (W1) QUADRANT ASSIGNMENTS FOR PIN 1 ORIENTATION IN TAPE Sprocket Holes Q1 Q2 Q1 Q2 Q3 Q4 Q3 Q4 User Direction of Feed Pocket Quadrants *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) A (mm) B (mm) K (mm) P1 (mm) W (mm) Pin1 Quadrant TPS7431KTWR DDPAK KTW 7 5 33. 24.4 1.6 15.6 4.9 16. 24. Q2 TPS7431KTWT DDPAK KTW 7 5 33. 24.4 1.6 15.6 4.9 16. 24. Q2 TPS7431RGWR VQFN RGW 2 3 33. 12.4 5.3 5.3 1.5 8. 12. Q2 TPS7431RGWT VQFN RGW 2 25 18. 12.4 5.3 5.3 1.5 8. 12. Q2 17
*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS7431KTWR DDPAK KTW 7 5 346. 346. 41. TPS7431KTWT DDPAK KTW 7 5 346. 346. 41. TPS7431RGWR VQFN RGW 2 3 346. 346. 29. TPS7431RGWT VQFN RGW 2 25 19.5 212.7 31.8 18
A. B.. D. E. 19
2
A. B.. D. E. F. 21
.625 (1,587).585 (1,485) H.41 (1,41).385 (9,78).33 (7,7).297 (7,54) A.55 (1,4).45 (1,14).6 B.64 (1,63).56 (1,42).34 (7,72).296 (7,52).3 (7,62).252 (6,4) H.37 (9,4).33 (8,38).65 (15,37).595 (15,11) A.187 (4,75).179 (4,55).12 (,35). (,).19 (,48).17 (,43).14 (2,64).96 (2,44) H F.5 (1,27).34 (,86).22 (,57).26 (,66).14 (,36) ~3.1 (,25) M B A M M.183 (4,65).17 (4,32) 421284/A 8/1 A. B.. D. E. F. G. H. (SBVS65J) 22
IMPORTANT NOTIE 21.11