DATASHEET ISL23511 FN6588 Rev 2.00 Single Push Button Controlled Potentiometer (XDCP) Low Noise, Low Power, September 9, 2015 32 Taps, Push Button Controlled Potentiometer The Intersil ISL23511 is a three-terminal digitally-controlled Features potentiometer (XDCP) implemented by a resistor array Solid-state volatile potentiometer composed of 31 resistive elements and a wiper switching network. The ISL23511 features a push button control, a Push button controlled shutdown mode, as well as an industry-leading TQFN Single or Auto increment/decrement package. - Fast Mode after 1s button press The push button control has individual PU and PD inputs for Shutdown Mode adjusting the wiper. To eliminate redundancy, the wiper 32 wiper tap points position will automatically increment or decrement if one of these inputs is held longer than 1s. - Zero scale wiper position on power-up Low power CMOS Forcing both PU and PD low for more than 2s activates shutdown mode. Shutdown mode disconnects the top of the -V = 2.7V to 5.5V CC resistor chain and moves the wiper to the lowest position, - Terminal voltage, 0 to V CC minimizing power consumption. - Standby current, 3A max The three terminals accessing the resistor chain naturally R value = 10k 50k TOTAL configure the ISL23511 as a voltage divider. A rheostat is Packages easily formed by floating an end terminal or connecting it to - 8 Ld SOIC and 10 Ld TQFN (2.1mmx1.6mm) the wiper. Pb-free (RoHS compliant) V (SUPPLY VOLTAGE) NC CC O PU V Applications 1 9 CC TFQFN NC PD 2 8 Volume Control (TOP VIEW) R R H 3 7 L R H V R PU SS W 4 6 LED/LCD Brightness Control CONTROL NC PD BLOCK R W Contrast Control O PU 1 8 V CC Programming Bias Voltages R SOIC PD 2 7 NC L R 3 (TOP VIEW) 6 R H L Ladder Networks V 4 5 R SS W V (GROUND) SS Ordering Information PART PART R TEMP. PACKAGE PKG. TOTAL NUMBER MARKING (k ) RANGE (C) (Pb-free) DWG. ISL23511WFB8Z* (Note 1) 23511 WFBZ 10 -40 to +125 8 Ld SOIC M8.15 ISL23511WFRU10Z-TK (Note 2) GA 10 -40 to +125 10 Ld TQFN L10.2.1x1.6A (No longer available or supported) *Add -TK suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTES: 1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets molding compounds/die attach materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. FN6588 Rev 2.00 Page 1 of 11 September 9, 2015 NO LONGER AVAILABLE OR SUPPORTED 5 10ISL23511 Pinouts ISL23511 ISL23511 (8 LD SOIC) (10 LD TQFN) TOP VIEW TOP VIEW NC O O PU 1 8 V CC V PU 1 9 CC PD 2 7 NC 2 8 NC PD R 3 6 R H L R 3 7 R H L V 4 5 R SS W V R SS 4 6 W NC Pin Descriptions SOIC TQFN PIN PIN SYMBOL BRIEF DESCRIPTION 11 PU The PU is a negative-edge triggered input with internal pull-up. Toggling PU will move the wiper close to R H terminal. 22 PD The PD is a negative-edge triggered input with internal pull-up. Toggling PD will move the wiper close to R L terminal. 33 R The R and R pins of the ISL23511 are equivalent to the fixed terminals of a mechanical potentiometer. The H H L minimum voltage is V and the maximum is V . The terminology of R and RL references the relative position SS CC H of the terminal in relation to wiper movement direction selected by the PU/PD input. 44 V Ground SS 56 R The R pin is the wiper terminal of the potentiometer, which is equivalent to the movable terminal of a mechanical W W potentiometer. 67 R The R and R pins of the ISL23511 are equivalent to the fixed terminals of a mechanical potentiometer. The L H L minimum voltage is V and the maximum is V . The terminology of R and R references the relative position SS CC H L of the terminal in relation to wiper movement direction selected by the PU/PD input. 7 5, 8, 10 NC No connection 89 V Supply Voltage CC Block Diagrams 5-BIT R 31 H PU UP/DOWN V (SUPPLY VOLTAGE) CC PD COUNTER 30 29 ONE 28 R OF H PU THIRTY R W TWO TRANSFER RESISTOR CONTROL DECODER GATES ARRAY PD BLOCK R W 2 R L 1 0 V (GROUND) SS R L GENERAL DETAILED FN6588 Rev 2.00 Page 2 of 11 September 9, 2015 NO LONGER AVAILABLE OR SUPPORTED 10 5