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TPS5103 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS5103 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 40 page  TPS5103 MULTIPLE MODE SYNCHRONOUS DC/DC CONTROLLER SLVS240A – SEPTEMBER 1999 – REVISED MAY 2001 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION COMP 8 I Comparator input for voltage monitor CT 4 I/O External capacitor from CT to GND for adjusting the triangle oscillator and decreasing the current-limiting voltage FB 3 O Feedback output of error amp GND 6 Control GND INV 2 I Inverting input of both error amp and hysteretic comparator LH 20 I/O Bootstrap. Connect a 1 µF, low-ESR capacitor from LH to LL. LL 18 I/O Bootstrap low. High-side gate driving return and output-current protection. Connect to the junction of the high-side and low-side FETs for a floating drive configuration. OUT_d 17 I/O Gate-drive output for low-side power switching FETs OUTGND 16 Ground for FET drivers OUT_u 19 O Gate-drive output for high-side power switching FETs PWM/SKIP 9 I PWM/SKIP mode select L:PWM mode H:SKIP mode REF 7 O 1.185-V reference voltage output RT 5 I/O External resistor connection for adjusting the triangle oscillator. SOFTSTART 1 I External capacitor from SOFTSTART to GND for soft-start control STBY 10 I Standby control TRIP 15 I External resistor connection for output-current control VCC 13 I Supply-voltage input VCC_SENSE 14 I Supply voltage sense for current protection VREF5 12 O 5-V internal regulator output VREG5V_IN 11 I External 5-V input (input voltage range = 4.5 V to 25 V) |
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