5 FB0 TS5 TP0 Monitor Bias Supply #1 SRC1 2.5V TS1 GND 0.012 1% RX0 100 FB #0 GND RM2 30.1K * RL0 Q0 IRF7413 RPG 10K RG0 10 FB1 CS1 0.1uF 10V RX1 100 TP1 8 7 6 5 Load #0 VCC LD0 3 2 1 4.2A (nom.) 4.7A (max.) 1% 1 Max. load current = 4.8A/channel 8 7 6 5 trips @ 3.7A (min.) RM1 1% CS0 0.1uF 10V FB #1 * TS10 + CL0 100uF 10V 1% GND TS15 LED0 Load #0 Power On 3 2 1 Green LED D Load #1 2.5V TS11 RL1 100 1/2W Q1 IRF7413 4 TS6 2 RSENSE SRC0 TS0 D 3 4 Supply #0 VCC 4 + CL1 100uF 10V GND TS16 RG1 10 Supply #2 SRC2 1.8V TS2 FB2 RX2 100 FB #2 GND TP2 8 7 6 5 Load #2 1.8V LD2 3 2 1 TS12 RL2 100 1/2W Q2 IRF7413 4 TS7 CS2 0.1uF 10V + CL2 220uF 6.3V GND TS17 RG2 10 RX3 100 FB #3 GND C TS8 TP3 8 7 6 5 CS3 0.1uF 10V FB3 Load #3 1 TS13 Q3 IRF7413 JP3-1 RL3 100 1/2W JP2 PG Function RG3 10 Track 2 Load #3 1.5V LD3 3 2 1 4 TS3 + CL3 220uF 6.3V TS18 GND C 1 Supply #3 SRC3 1.5V Pull-up Sequence 3 3 Sequence 2 FB4 FB #4 TS9 TP4 RX4 100 V1 In 20ms delay RV1 TP5 1K CTIMER 0.033uF 6.3V JP1 Monitor Do Not Monitor Supply #1 1 3 2 RB1 169K 1% B RB2 110K 1% RB3 82.5K 1% RB4 11.3K 1% Supply #2 4 6 5 Supply #3 7 9 8 Supply #4 RA1 49.9K 1% RA2 49.9K 1% RA3 49.9K 1% 10 4 Track 2 Sequence 220uF 6.3V TS19 GND RG4 10 CPG 0.033uF 25V FB0 TIMER V1 12 11 V2 V3 V4 S4 LD3 Remote Sense 5 Sequence/No Sense LD0 1 S0 2 TIMER 3 V1 4 V2 5 V3 6 V4 7 S4 8 D4 D0 20 SCR0 Vcc 19 SENSE SENSE 18 GATE GATE 17 PG PG 16 PG GND 15 LD1 D1 14 PG Out RPGO TP8 1K FB1 S1 13 D2 12 FB2 S2 11 9 S3 10 D3 LTC2922IF RGTO * 0.10V/ms ramp CGATE 0.1uF 25V 1K TP7 GATE Sequence/No Sense PG Function / Load #3/#4 selector jumpers: 6 TP9 + CL4 B 6 4 RL4 100 1/2W Q4 IRF7413 0.12V/ms ramp 5 Load #3 TS14 U1 S3 Remote Sense TP6 Load #4 1.2V LD4 3 2 1 JP4-1 Load #4 10uF 10V LD4 JP3-2 1K TIMER + CBYP RA4 10K 1% JP4-2 Load #4 RTMO 8 7 6 5 CS4 0.1uF 10V 4 GND SRC4 1 TS4 3 Supply #4 1.2V Jumpers LEFT = Five-Supply Tracker Jumpers RIGHT = Three/Two Supply Sequencer TP10 TP11 A A MONITOR Pins V1-V4 selector jumpers: (ON PCB) Jumpers LEFT = "Do Not Monitor" Jumpers RIGHT = "Monitor" * VERSION TABLE ASSEMBLY TYPE DC740A-A DC740A-B DC740A-C U1 LTC2922IF LTC2922IF-3.3 LTC2922IF-2.5 VCC 5V 3.3V 2.5V RM1 221K 137K 95.3K RL0 274 100 10 CUSTOMER NOTICE CONTRACT NO. LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 2 APPROVALS DRAWN June Wu DATE 12/2/03 CHECKED TECHNOLOGY TITLE LTC2922 Series, Tracker/Sequencer Demo Board APPROVED ENGINEER Tom DiGiacomo 12/2/03 DESIGNER Friday, August 06, 2004 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 SIZE CAGE CODE SCALE: DWG NO REV A DC740A FILENAME: SHEET 1 1 OF 1