Maker : ETC
Part No. : N1164

  Datasheet PDF : N1164.pdf
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Product Information

www.DataSheet4U.com NIKO-SEM 5 Bit Programmable Synchronous Buck Converter with Dual LDOs Controller FEATURES N1164 GENERAL DESCRIPTION The N1164 is a 5 bit TTL-compatible input, Synchronous operation with high efficiency digital-to-analog (DAC) programmable, synTTL-compatible 5 bit DAC, output voltage chronous buck converter with dual LDOs selection from 1.3V to 3.5V programmable controller designed specifically to power the High current totem pole output, up to 2 A Pentium ® II as well as the next generation of for direct driving of the external N-Channel P6 family or other high performance core power MOSFETs. logic in desktop personal computer and file 200 KHz fixed frequency internal oscillator servers CPU applications. Fast transient response The N1164 switching section provides proProvides 2 regulated voltages, 1.5V and grammability of output voltage from 1.3V to 2.5V for linear section 2.05V in 50mV steps and 2.0V to 3.5V in 100 Power-Good output voltage monitor mV increments and the linear sections use Over-Voltage and Over-Current protection external N-Channel power MOSFETs to Logic level enable input provide fixed output voltages of 1.5V for GTL High performance and low cost solution bus and 2.5V for clock. The N1164 monitors all the output voltages. APPLICATIONS A signal Power-Good signal is issued when Powering Pentium ® II, III or Deschutes, the core is within ±15% of the DAC setting. K6 and other advanced processor Additional features are built-in over-voltage, High power DC to DC controller with triple over-current protections for the core output DataSheet4U.com DataShee output supplies and logic compatible shutdown. TYPICAL APPLICATION 12V 5V N1164 + + ENABLE VID 0~4 POWER-GOOD 3.3V LINEAR SECTION SWITCHING SECTION VCORE + 1.5V GTC BUS + + 2.5V CLOCK + N1164, Motherboard Power Regulation for Computers DataSheet4U.com 1 AUG-03-2001 DataSheet4 U .com www.DataSheet4U.com NIKO-SEM 5 Bit Programmable Synchronous Buck Converter with Dual LDOs Controller N1164 ABSOLUTE MAXIMUM RATINGS VCC to GND BST to GND Thermal Resistance Junction to Case, θJC Thermal Resistance Junction to Ambient, θJA - 0.3V to 7V -0.3V to 15V 25 °C/W 80 °C/W Operating Temperature Range, TA Operating Junction Temperature Range, TJ Storage Temperature Range, TSTG Lead Temperature, TLEAD (Soldering, 10 Seconds) 0 to 70 °C 0 to 125 °C -65 to 150 °C 300 °C ELECTRICAL SPECIFICATIONS PARAMETER CONDITIONS SWITCHING SECTION VCC VCC = 5.0V IO = 2A IO = 0.3A to 15A DataSheet4U.com All VID Codes VOSENSE to VO MIN 4.5 TYP MAX UNITS V mA Supply Voltage Supply Current Output Voltage Load Regulation et4U.com Line Regulation Gain (AOL) Current Limit Voltage Oscillator Frequency Oscillator Max Duty Cycle Peak DH Sink/Source Current Peak DL Sink/Source Current OVP Threshold Voltage OVP Source Current Power-Good Threshold Voltage Dead Time Quiescent Current Output Voltage (LDO1) Output Voltage (LDO2) Load Regulation Line Regulation Output Impedance BSTH - DH = 4.5V, DH - PGNDH = 2V BSTL - DL = 4.5V, DL - PGNDL = 2V VOVP = 3.0V 7 8 15 See Table 1. 1 0.5 35 55 70 85 175 200 225 90 95 1 1 120 10 85 115 100 200 5 2.45 2.500 2.55 1.47 1.500 1.53 1 1 1 % % DataShee dB mV KHz % A A % mA % nS mA V V % % KΩ LINEAR SECTIONS LDOV = 12V IO = 0 to 8A DataSheet4U.com 2 AUG-03-2001 DataSheet 4 U .com www.DataSheet4U.com NIKO-SEM 5 Bit Programmable Synchronous Buck Converter with Dual LDOs Controller N1164 PIN CONFIGURATIONS PIN DEFINITIONS Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Pin Name AGND GATE1 LDOS1 LDOS2 VCC OVP PWRGOOD* CSCS+ PGNDL DH PGNDL DL BSTL BSTH Pin Function Description Small signal analog and digital ground Gate drive output LDO1 Sense input for LDO1 Sense input for LDO2 DataSheet4U.com Input voltage High signal out if VO>set point +20% Open collector logic output, high if VO ...

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