DATASHEET ISL22512 FN6679 Rev 3.00 Single Push Button Controlled Potentiometer (XDCP) Low Noise, Low Power, October 12, 2015 16 Taps, Push Button Controlled Potentiometer The Intersil ISL22512 is a three-terminal digitally-controlled Features potentiometer (XDCP) implemented by a resistor array Solid-State Non-Volatile Potentiometer composed of 15 resistive elements and a wiper switching network. The ISL22512 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 AUTOSTORE of Last Wiper Position or Manual Store of adjusting the wiper. To eliminate redundancy, the wiper Wiper Position position will automatically increment or decrement if one of Shutdown Mode these inputs is held longer than one second. 16 Wiper Tap Points Forcing both PU and PD low for more than two seconds - Middle Scale Wiper Position on Power-Up activates shutdown mode. Shutdown mode disconnects the top of the resistor chain and moves the wiper to the lowest Low Power CMOS position, minimizing power consumption. -V = 2.7V to 5.5V CC - Terminal Voltage, 0 to V The three terminals accessing the resistor chain naturally CC configure the ISL22512 as a voltage divider. A rheostat is - Standby Current, 3A max easily formed by floating an end terminal or connecting it to R Value = 10k TOTAL the wiper. NC High Reliability O V (SUPPLY VOLTAGE) CC PU V 1 9 CC - Endurance: 1,000,000 data changes per bit per register TQFN ASE PD 2 8 - Register data retention: 50 years T +55C (Top View) RH RL 3 7 V RW SS Packages 4 6 RH PU - 8 Ld SOIC NC CONTROL PD BLOCK RW - 10 Ld TQFN (2.1mmx1.6mm) O ASE PU 1 8 V CC Pb-Free (RoHS Compliant) RL SOIC PD 2 7 ASE (Top View) RH 3 6 RL Applications V 4 5 RW SS V (GROUND) Volume Control SS LED/LCD Brightness Control Contrast Control Programming Bias Voltages Ladder Networks FN6679 Rev 3.00 Page 1 of 13 October 12, 2015 10 5ISL22512 Ordering Information PART PART R TEMP. PACKAGE PKG. TOTAL NUMBER MARKING (k ) RANGE(C) (RoHS Compliant) DWG. ISL22512WFB8Z* (Note 1) 22512 WFBZ 10 -40 to +125 8 Ld SOIC M8.15 ISL22512WFRU10Z-TK (Note 2) GE 10 -40 to +125 10 Ld TQFN L10.2.1x1.6A (No longer available, Tape and Reel recommended replacement: ISL22512WFB8Z-TK) *Add -TK suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: 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. Pinouts ISL22512 ISL22512 (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 ASE 2 8 ASE PD RH 3 6 RL RH 3 7 RL V 4 5 RW SS V RW SS 4 6 NC Pin Descriptions SOIC TQFN PIN PIN SYMBOL BRIEF DESCRIPTION 11 PU The PU is a falling-edge triggered input with internal pull-up. Toggling PU will move the wiper close to RH terminal. 22 PD The PD is a falling-edge triggered input with internal pull-up. Toggling PD will move the wiper close to RL terminal. 3 3 RH The RH and RL pins of the ISL22512 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum voltage is V and the maximum is V . The terminology of RH and RL references the relative SS CC position of the terminal in relation to wiper movement direction selected by the PU/PD input. 44 V Ground SS 5 6 RW The RW pin is the wiper terminal of the potentiometer which is equivalent to the movable terminal of a mechanical potentiometer. 6 7 RL The RH and RL pins of the ISL22512 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum voltage is V and the maximum is V . The terminology of RH and RL references the relative SS CC position of the terminal in relation to wiper movement direction selected by the PU/PD input. 7 8 ASE Active low AUTOSTORE enable input or Manual Store active low input 89 V Supply Voltage CC 5, 10 NC No connection FN6679 Rev 3.00 Page 2 of 13 October 12, 2015 NO LONGER AVAILABLE OR SUPPORTED 10 5