A B C 4 +5V U2 HCPL-0300 NC 2 3 = Probe Openings R2 1K 4 1 3 14 12 10 8 6 4 2 C1 0.1uF, 16V X7R U6 24LC025 NC 2 3 3 4 A0 VCC A1 WP A2 SCL VSS SDA R6 5.11K 1% 8 R7 5.11K 1% + + + + + + + GND + + + + + + RTN U4 MOC207-M R4 100K 1 6 2 5 INTVCC E13 SHORT PIN 1 3 RTN JP8 ON E16 1 3 5 ON INTVCC TP9 TP11 E17 + + + + + + + 2 4 6 HIGH EXT LOW R9 10K 1 2 5 6 INTVCC R16 0 R15 100K R18 100K R17 0 R19 100K R20 100K CVCC 0.1uF, 16V X7R RUV1 10.2K 1% RUV2 0 E26 E28 SDAO SDAO 9 CUV 0.01uF, 10V X7R 10 11 ROV2 42.2K 1% VEE ROV1 1.02K 1% COV 0.01uF, 10V X7R 12 JP11 ADIN2 R21 10.0K 1% E25 VEE E24 EXT 1 3 R22 (Opt.) + + 13 TP15 2 4 + + TP16 14 PGI PGIO ON PG ALERT EN SDAO ADR1 SDAI ADR0 RIN6 510 1/4W RIN5 510 1/4W UVL NC R23 (Opt.) E31 TP17 1 Q5 Opt. Q6 Opt. 2 1 Q4 Opt. 2 1 Q3 Opt. 2 1 -48V INPUT D3 LED GREEN E34 SCL D9 LED Opt. RIN3 510 1/4W R33 24K 1/4W RTN + E36 RTN R14 10K DCLAMP1 SMBT70A RIN2 510 1/4W TP19 2 4 6 LOW FLOAT HIGH I2C ADDRESS + + + + + + 2 4 6 LOW FLOAT HIGH FLTIN CF 0.033uF 25V 16 RD 1M 15 GATE 3 VIN E21 VEE CIN 1uF 16V CTMR 0.22uF 16V CSS 0.22uF 16V 3 R13 100K E22 TP13 E23 RF 1K Q1 IRF1310NS CR 0.01uF,100V X5R 4 Q2 (Opt.) HUF75652 MIN. TRACE WIDTH FOR HIGH CURRENT PATH = 500 MILS 4 TP18 A1 R24 (Opt.) D4 LED GREEN A2 2 SDAI D8 LED Opt. C2 Opt. R32 Opt. + + + R34 24K 1/4W MIN. ISOLATION LANE WIDTH = 55 MILS R35 24K 1/4W DCLAMP2 S1B 2 E32 -48V/200W OUTPUT R36 24K 1/4W E35 1 R31 Opt. + + + INTVCC E20 TP14 1 R30 Opt. 3 SDAO D7 LED Opt. R29 Opt. 2 R28 Opt. 3 ALERT D6 LED Opt. R27 Opt. 3 R26 Opt. 3 R25 Opt. VEE R12 422K 1% 2 E33 E10 JP10 ADR0 1 3 5 E19 TP12 17 3 VEE E8 EN ADIN R10 (Opt.) 18 CG 0.047uF,16V X5R RS .008 VEE HIGH EXT LOW JP4 ADR1 VIN 19 NC RG 10 RIN4 510 1/4W 1 3 20 DRAIN SENSE 2 4 6 INTVCC R5 10.0K 1% R11 10.2K 1% 21 RAMP VEE + + + 22 SS OV + + + + + E E12 23 TIMER UVH + + 24 VIN ADIN2 EXT 25 FLTIN INTVCC ALERT E30 5 VDS 26 ADIN SCL 2 4 27 OV VIN E29 ALERT 28 E27 SDAI SDAI 7 8 ADIN2 SCL SCL RUV3 162K 1% E9 JP9 ADIN U5 LTC4261CGN 4 TP7 1 3 5 C 6 1 3 5 BYPASS + + + 1 R1 10K JP2 EN 1 3 TP6 PERSONALITY AREA VEE OPTO 2 4 VEE E15 A2 D2 LED GREEN TP2 U3 MOC207-M PG OUTPUT 5 TP10 PGIO E5 2 PGI INPUT E14 RTN 4 E E2 PGIO OUTPUT 2 4 JP6 PGI 3 INTVCC 2 R3 100 7 TP8 + + E11 E18 6 + + C E1 E6 K SPLIT R8 5.11K 1% 5 E7 2 4 + + 6 2 EXT JP5 UV/OV TP5 COM 1 3 1 GND 5 SHORT PIN 2 4 JP7 SDA E4 6 U1 MOC207-M A1 OPTO 1 3 OUTPUT A I2C 13 11 9 7 5 3 1 E3 7 SINGLE WIRE INTERFACE 2 4 + + 8 C3 0.1uF, 16V X7R 1 1 + + + + + + + + + VOUT TP3 SINGLE WIRE TP4 RL CATHODE JP3 INTERFACE J1 I2C INTERFACE VCC ANODE R37 (Opt.) E D1 LED GREEN JP1 PGIO 1 1 INTVCC TP1 D RIN1 510 1/4W RTN + E37 RTN + E38 UV 1 INPUT THRESHOLDS OFF 38.7V UV ON 43.2V OV ON 73.4V OV OFF 75.0V 1 LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY Customer Notice 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 Circuit 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. NOTES: UNLESS OTHERWISE SPECIFIED A B C D LINEAR TECHNOLOGY CORPORATION 1630 McCARTHY BLVD. MILPITAS, CA. 95035 408-432-1900 408-434-0507 FAX Title 200W Negative 48V Hot Swap Controller With Current and Voltage Monitoring Size Document Number Date: Monday, April 24, 2006 Demo Circuit 998A E Rev LTC4261CGN Sheet 1 of 1