LTC1706-19 VID Voltage Programmer DESCRIPTIO FEATURES n Programs Regulator Output Voltage from 1.3V to The LTC 1706-19 is a precision, digitally programmed, 2V in 50mV Steps resistive ladder which adjusts the output of any 1.19V n Programs an Entire Family of Linear Technology referenced regulator. Depending on the state of the four DC/DC Converters VID inputs, an output voltage between 1.3V and 2V is n Fully Compliant with the Intel Mobile VID programmed in 50mV increments. Specification The LTC1706-19 is designed specifically to program an n 0.25% Accurate Output Voltage entire family of Linear Technology DC/DC converters in full n Built-In 40k Pull-Up Resistors on VID Inputs compliance with the Intel Mobile VID specification. n Available in SO-8 Packaging The LTC1706-19 programs the following Linear Technol- U ogy DC/DC converter products: LTC1433, LTC1434, APPLICATIONS LTC1435, LTC1435A, LTC1436, LTC1437, LTC1438, LTC1439, LTC1538-AUX, LTC1539, LTC1624 and n Intel Mobile Pentium II Processor Power Supply LTC1625. (Consult factory for future compatible DC/DC n Notebook and Palmtop Computers, PDAs converter products.) n Portable Instruments , LTC and LT are registered trademarks of Linear Technology Corporation. n Battery-Powered Equipment Pentium is a registered trademark of Intel Corporation. TYPICAL APPLICATIO Intel Mobile Pentium II Processor Power Supply V IN C OSC R 4.5V TO 22V F 47pF 4.7 1 13 C V OSC IN C IN + 10F 2 16 M1 RUN/SS TG 30V Si4410 X2 3 C F I C TH SS 0.1F 0.1F L1 R SENSE LTC1435A 3.3H 0.015 14 SW V OUT C C 1.3V TO 2V 1000pF 7A SENSE 12 V INTV CC CC C C2 R C 220pF 10k *D B 5 SGND 0.22F C OUT + 50pF 15 820F FB 6 BOOST LTC1706-19 4V V OSENSE + X2 4.7F 11 M2 D1 BG Si4410 MBRS140T3 VID 10 PGND 012 3 GND + SENSE SENSE 7 8 FROM P 1000pF 1706-19 TA01 *CMDSH-3 1 U ULTC1706-19 UUW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) ORDER PART (Voltages Referred to GND Pin) TOP VIEW NUMBER Input Supply Voltage (V ) ..........................0.3V to 7V CC VID2 1 8 VID1 VID Input Pins .............................................0.3V to 7V LTC1706CS8-19 VID3 2 7 VID0 SENSE Pin ...................................................0.3V to 7V LTC1706IS8-19 V 3 6 SENSE CC FB Pin ..........................................................0.3V to 7V GND 4 5 FB Operating Temperature Range S8 PART S8 PACKAGE LTC1706C-19 .......................................... 0C to 70C 8-LEAD PLASTIC SO MARKING LTC1706I-19 ...................................... 40C to 85C T = 110C, = 120C/W JMAX JA Junction Temperature........................................... 110C 170619 Storage Temperature Range ................. 65C to 150C 706I19 Lead Temperature (Soldering, 10 sec).................. 300C Consult factory for Military grade parts. ELECTRICAL CHARACTERISTICS T = 25C, 2.7V V 5.5V, VID0 = VID1 = VID2 = VID3 = N. C., unless otherwise specified. A CC SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Operating Supply Voltage Range 2.7 5.5 V CC I Supply Current (Note 2) 0.1 5 A VCC R Resistance Between SENSE and FB l 815 20 k FB-SENSE V Error % Output Voltage Accuracy Programmed From 1.3V to 2V l 0.25 0.25 % OUT R VID Input Pull-Up Resistance V = 0.6V, V = 5V, (Note 3) 40 k PULLUP DIODE CC VID VID Input Voltage Threshold V (2.7V V 5.5V) 0.4 V T IL CC V (2.7V V 5.5V) 1.6 V IH CC I VID Input Leakage Current V < VID < 7V, (Note 3) 0.01 1 A VID-LEAK CC V VID Pull-Up Voltage V = 3.3V 2.8 V PULLUP CC V = 5V 4.5 V CC The l denotes specifications which apply over the full specified be approximately equal to the number of grounded VID input pins times temperature range. (V 0.6V)/40k. (See the Typical Applications section for more detail.) CC Note 1: Absolute Maximum Ratings are those values beyond which the life Note 3: Each built-in pull-up resistor attached to the VID inputs also has a of a device may be impaired. series diode connected to V to allow input voltages higher than the V CC CC supply without damage or clamping. (See Operation section for further Note 2: With all four VID inputs floating, the V supply current is simply CC detail.) the device leakage current. However, the V supply current will rise and CC 2 U WWW