Datasheet LT8609, LT8609A, LT8609B (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | 42V, 3A Synchronous Step-Down Regulator with 2.5µA Quiescent Current |
| Seiten / Seite | 30 / 9 — TYPICAL PERFORMANCE CHARACTERISTICS. Minimum Load to Full Frequency. … |
| Revision | I |
| Dateiformat / Größe | PDF / 2.0 Mb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. Minimum Load to Full Frequency. Burst Frequency vs Load Current. (SYNC Float to 1.9V)
Modelllinie für dieses Datenblatt
- LT8609AEDDM#PBF LT8609AEDDM#TRPBF LT8609AEDDM#WPBF LT8609AEDDM#WTRPBF LT8609AEDDM-3.3#PBF LT8609AEDDM-3.3#TRPBF LT8609AEDDM-3.3#WPBF LT8609AEDDM-3.3#WTRPBF LT8609AEDDM-5#PBF LT8609AEDDM-5#TRPBF LT8609AEDDM-5#WPBF LT8609AEDDM-5#WTRPBF LT8609AEMSE#PBF LT8609AEMSE#TRPBF LT8609AEMSE#WPBF LT8609AEMSE#WTRPBF LT8609AEMSE16#PBF LT8609AEMSE16#TRPBF LT8609AEMSE16#WPBF LT8609AEMSE16#WTRPBF LT8609AHDDM#PBF LT8609AHDDM#TRPBF LT8609AHDDM#WPBF LT8609AHDDM#WTRPBF LT8609AHDDM-5#PBF LT8609AHDDM-5#TRPBF LT8609AHDDM-5#WPBF LT8609AHDDM-5#WTRPBF LT8609AHMSE#PBF LT8609AHMSE#TRPBF LT8609AHMSE#WPBF LT8609AHMSE#WTRPBF LT8609AHMSE16#PBF LT8609AHMSE16#TRPBF LT8609AHMSE16#WPBF LT8609AHMSE16#WTRPBF LT8609AIMSE#PBF LT8609AIMSE#TRPBF LT8609AIMSE#WPBF LT8609AIMSE#WTRPBF LT8609AIMSE16#PBF LT8609AIMSE16#TRPBF LT8609AIMSE16#WPBF LT8609AIMSE16#WTRPBF LT8609AJDDM#PBF LT8609AJDDM#TRPBF LT8609AJDDM#WPBF LT8609AJDDM#WTRPBF LT8609AJDDM-3.3#PBF LT8609AJDDM-3.3#TRPBF LT8609AJDDM-3.3#WPBF LT8609AJDDM-3.3#WTRPBF LT8609AJDDM-5#PBF LT8609AJDDM-5#TRPBF LT8609AJDDM-5#WPBF LT8609AJDDM-5#WTRPBF LT8609AJMSE#PBF LT8609AJMSE#TRPBF LT8609AJMSE#WPBF LT8609AJMSE#WTRPBF LT8609AJMSE16#PBF LT8609AJMSE16#TRPBF LT8609AJMSE16#WPBF LT8609AJMSE16#WTRPBF LT8609BEMSE#PBF LT8609BEMSE#TRPBF LT8609BIMSE#PBF LT8609BIMSE#TRPBF LT8609EMSE#PBF LT8609EMSE#TRPBF LT8609EMSE#WPBF LT8609EMSE#WTRPBF LT8609HMSE#PBF LT8609HMSE#TRPBF LT8609HMSE#WPBF LT8609HMSE#WTRPBF LT8609IMSE#PBF LT8609IMSE#TRPBF LT8609IMSE#WPBF LT8609IMSE#WTRPBF
Textversion des Dokuments
LT8609/LT8609A/LT8609B
TYPICAL PERFORMANCE CHARACTERISTICS Minimum Load to Full Frequency Burst Frequency vs Load Current (SYNC Float to 1.9V) Frequency Foldback
2500 100 2500 L = 2.2µH VOUT = 5V V V IN = 12V OUT = 3.3V 90 fSW = 700kHz VOUT = 3.3V 2000 VIN = 12V SYNC = FLOAT R SYNC = 0V 80 2000 T = 18.2k 70 1500 60 1500 50 1000 40 1000 FREQUENCY (kHz) FREQUENCY (kHz) LOAD CURRENT (mA) 30 500 20 500 10 0 0 0 0 200 400 600 0 10 20 30 40 50 0 0.2 0.4 0.6 0.8 1 LOAD CURRENT (mA) INPUT VOLTAGE (V) FB VOLTAGE (V) 8609 G22 8609 G23 8609 G24
Soft-Start Tracking Soft-Start T Soft-Start Current vs Temperature Soft Start Current Vs T VIN UVLO
1.0 2.5 3.5 V 0.9 2.4 SS = 0.1V 3 0.8 2.3 2.5 0.7 2.2 0.6 2.1 2 TAGE (V) 0.5 2.0 T CURRENT (µA) UVLO (V) 1.5 0.4 AR 1.9 V IN FB VOL 0.3 T ST 1.8 1 0.2 SOF 1.7 0.5 0.1 1.6 0 1.5 0 0 0.1 0.2 0.4 0.5 0.6 0.7 0.8 1.0 1.1 1.2 –50 –30 –10 10 30 50 70 90 110 130 150 –55 –25 5 35 65 95 125 155 SS VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 8609 G25 8609 G26 8609 G30
Case Temperature vs Case Temperature vs Load Current 3A Pulsed Load Case Temperature vs 3A Pulsed Load
60 50 VOUT = 5V VIN = 12V f 45 SW = 2MHz VIN = 24V 50 STANDBY LOAD = 50mA 40 PULSED LOAD = 3A 35 40 VOUT = 5V fSW = 2MHz 30 TURE RISE (°C) 30 TURE RISE (°C) 25 20 20 15 CASE TEMPERA 10 10 CASE TEMPERA VIN = 12V 5 VIN = 24V 0 0 0 0.5 1 1.5 2 2.5 3 0 10 20 30 40 50 60 70 80 90 100 LOAD CURRENT (A) DUTY CYCLE (%) 8609 G31 8609 G32 Rev. I For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Minimum Load to Full Frequency Burst Frequency vs Load Current (SYNC Float to 1.9V) Frequency Foldback
2500 100 2500 L = 2.2µH VOUT = 5V V V IN = 12V OUT = 3.3V 90 fSW = 700kHz VOUT = 3.3V 2000 VIN = 12V SYNC = FLOAT R SYNC = 0V 80 2000 T = 18.2k 70 1500 60 1500 50 1000 40 1000 FREQUENCY (kHz) FREQUENCY (kHz) LOAD CURRENT (mA) 30 500 20 500 10 0 0 0 0 200 400 600 0 10 20 30 40 50 0 0.2 0.4 0.6 0.8 1 LOAD CURRENT (mA) INPUT VOLTAGE (V) FB VOLTAGE (V) 8609 G22 8609 G23 8609 G24
Soft-Start Tracking Soft-Start T Soft-Start Current vs Temperature Soft Start Current Vs T VIN UVLO
1.0 2.5 3.5 V 0.9 2.4 SS = 0.1V 3 0.8 2.3 2.5 0.7 2.2 0.6 2.1 2 TAGE (V) 0.5 2.0 T CURRENT (µA) UVLO (V) 1.5 0.4 AR 1.9 V IN FB VOL 0.3 T ST 1.8 1 0.2 SOF 1.7 0.5 0.1 1.6 0 1.5 0 0 0.1 0.2 0.4 0.5 0.6 0.7 0.8 1.0 1.1 1.2 –50 –30 –10 10 30 50 70 90 110 130 150 –55 –25 5 35 65 95 125 155 SS VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 8609 G25 8609 G26 8609 G30
Case Temperature vs Case Temperature vs Load Current 3A Pulsed Load Case Temperature vs 3A Pulsed Load
60 50 VOUT = 5V VIN = 12V f 45 SW = 2MHz VIN = 24V 50 STANDBY LOAD = 50mA 40 PULSED LOAD = 3A 35 40 VOUT = 5V fSW = 2MHz 30 TURE RISE (°C) 30 TURE RISE (°C) 25 20 20 15 CASE TEMPERA 10 10 CASE TEMPERA VIN = 12V 5 VIN = 24V 0 0 0 0.5 1 1.5 2 2.5 3 0 10 20 30 40 50 60 70 80 90 100 LOAD CURRENT (A) DUTY CYCLE (%) 8609 G31 8609 G32 Rev. I For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts