Datasheet LT8652S (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | Dual Channel 8.5A, 18V, Synchronous Step-Down Silent Switcher with 16µA Quiescent Current |
| Pages / Page | 36 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| Revision | A |
| File Format / Size | PDF / 4.2 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Case Temperature Rise. Single Channel
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LT8652S
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Case Temperature Rise Case Temperature Rise Single Channel Single Channel IIMON Current Limit
120 100 1.20 DC2523A DEMO BOARD CH1 = 1A STANDBY, 12A PULSED V 90 OUT1 = VOUT2 = 1V CH2 = 0A DC 100 fSW = 1.5MHz 1.00 80 CH1 = 1A STANDBY, 12A PULSED 12VIN, LOAD2 = 0A CH2 = 8.5A DC 70 80 12VIN, LOAD2 = LOAD1 0.80 12VIN, LOAD2 = 8.5A 60 5V TURE RISE (°C) IN, LOAD2 = LOAD1 (V) 60 TURE RISE (°C) 50 0.60 40 V OUT1 40 0.40 30 DC2523A DEMO BOARD RIMON = 9.6kΩ CASE TEMPERA 20 20 CASE TEMPERA V 12V IN1 = VIN2 = 12V IN TO 1VOUT 0.20 10 f FCM, f SW = 1.5MHz SW = 2MHz V L = XEL4030-301MEB OUT1 = VOUT2 = 1V 0 0 0 0 1 2 3 4 5 6 7 8 9 10 11 12 0 0.2 0.4 0.6 0.8 1 0 1 2 3 4 5 6 7 8 9 10 LOAD CURRENT (A) DUTY CYCLE OF 12A LOAD () IOUT1 (A) 8652S G43 8652S G44 8652S G45
IIMON vs IO, FCM and Burst Mode Operation IIMON Error IIMON vs Other Channel Load
160 5.0 90 12VIN TO 1VOUT 12VIN TO 1VOUT 12VIN TO 1VOUT f 140 SW = 2MHz 4.0 fSW = 2MHz 88 fSW = 2MHz L = XEL4030-201MEB 3.0 L = XEL4030-301MEB L = XEL4030-201MEB 86 120 2.0 84 100 1.0 82 (µA) 80 0 (µA) 80 ERROR (%) I IMON 60 –1.0 I IMON 78 I IMON –2.0 76 40 –3.0 74 20 FCM –4.0 CH1 AT 6A (VARY IOUT2) 72 Burst Mode OPERATION IOUT = 6A CH2 AT 6A (VARY IOUT1) 0 –5.0 70 0 1 2 3 4 5 6 7 8 9 10 11 12 –55 –25 5 35 65 95 125 155 0 1 2 3 4 5 6 7 8 OUTPUT CURRENT (A) TEMPERATURE (°C) OUTPUT CURRENT ON OTHER CHANNEL (A) 8652S G46 8652S G47 8652S G48
RT Programmed Switching IIMON Current Limit Frequency
9.0 160 12VIN TO 1VOUT fSW = 2MHz 140 8.8 L = XEL4030-301MEB RLOAD = 10mΩ, RIMON = 9.53k 120 8.6 100 (A) 80 I OUT 8.4 60 RT PIN RESISTOR (kΩ) 40 8.2 20 8.0 0 –55 –25 5 35 65 95 125 155 0 0.5 1 1.5 2 2.5 3 TEMPERATURE (°C) SWITCHING FREQUENCY (MHz) 8652S G49 LT8652 G50 Rev. A 10 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Case Temperature Rise Case Temperature Rise Single Channel Single Channel IIMON Current Limit
120 100 1.20 DC2523A DEMO BOARD CH1 = 1A STANDBY, 12A PULSED V 90 OUT1 = VOUT2 = 1V CH2 = 0A DC 100 fSW = 1.5MHz 1.00 80 CH1 = 1A STANDBY, 12A PULSED 12VIN, LOAD2 = 0A CH2 = 8.5A DC 70 80 12VIN, LOAD2 = LOAD1 0.80 12VIN, LOAD2 = 8.5A 60 5V TURE RISE (°C) IN, LOAD2 = LOAD1 (V) 60 TURE RISE (°C) 50 0.60 40 V OUT1 40 0.40 30 DC2523A DEMO BOARD RIMON = 9.6kΩ CASE TEMPERA 20 20 CASE TEMPERA V 12V IN1 = VIN2 = 12V IN TO 1VOUT 0.20 10 f FCM, f SW = 1.5MHz SW = 2MHz V L = XEL4030-301MEB OUT1 = VOUT2 = 1V 0 0 0 0 1 2 3 4 5 6 7 8 9 10 11 12 0 0.2 0.4 0.6 0.8 1 0 1 2 3 4 5 6 7 8 9 10 LOAD CURRENT (A) DUTY CYCLE OF 12A LOAD () IOUT1 (A) 8652S G43 8652S G44 8652S G45
IIMON vs IO, FCM and Burst Mode Operation IIMON Error IIMON vs Other Channel Load
160 5.0 90 12VIN TO 1VOUT 12VIN TO 1VOUT 12VIN TO 1VOUT f 140 SW = 2MHz 4.0 fSW = 2MHz 88 fSW = 2MHz L = XEL4030-201MEB 3.0 L = XEL4030-301MEB L = XEL4030-201MEB 86 120 2.0 84 100 1.0 82 (µA) 80 0 (µA) 80 ERROR (%) I IMON 60 –1.0 I IMON 78 I IMON –2.0 76 40 –3.0 74 20 FCM –4.0 CH1 AT 6A (VARY IOUT2) 72 Burst Mode OPERATION IOUT = 6A CH2 AT 6A (VARY IOUT1) 0 –5.0 70 0 1 2 3 4 5 6 7 8 9 10 11 12 –55 –25 5 35 65 95 125 155 0 1 2 3 4 5 6 7 8 OUTPUT CURRENT (A) TEMPERATURE (°C) OUTPUT CURRENT ON OTHER CHANNEL (A) 8652S G46 8652S G47 8652S G48
RT Programmed Switching IIMON Current Limit Frequency
9.0 160 12VIN TO 1VOUT fSW = 2MHz 140 8.8 L = XEL4030-301MEB RLOAD = 10mΩ, RIMON = 9.53k 120 8.6 100 (A) 80 I OUT 8.4 60 RT PIN RESISTOR (kΩ) 40 8.2 20 8.0 0 –55 –25 5 35 65 95 125 155 0 0.5 1 1.5 2 2.5 3 TEMPERATURE (°C) SWITCHING FREQUENCY (MHz) 8652S G49 LT8652 G50 Rev. A 10 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
