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SC1159

Features: 􀂋· Programmable hysteresis􀂋· 5 bit DAC programmable output (1.050V-1.825V)􀂋· On-chip power good and OVP functions􀂋· Designed to meet latest Intel specifications􀂋· Up to 95% efficiency􀂋· +1% tolerance over temperatureApplication⣷...

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SeekIC No. : 004485431 Detail

SC1159: Features: 􀂋· Programmable hysteresis􀂋· 5 bit DAC programmable output (1.050V-1.825V)􀂋· On-chip power good and OVP functions􀂋· Designed to meet latest Intel specif...

SC1159 Data Sheet

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Part Number:
SC1159
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/26

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Product Details

Description



Features:

􀂋· Programmable hysteresis
􀂋· 5 bit DAC programmable output (1.050V-1.825V)
􀂋· On-chip power good and OVP functions
􀂋· Designed to meet latest Intel specifications
􀂋· Up to 95% efficiency
􀂋· +1% tolerance over temperature


Application

􀂋· Server Systems and Workstations
􀂋· Pentium® III Core Supplies
􀂋· AMD Athlon® Core Supplies
􀂋· Multiple Microprocessor Supplies
􀂋· Voltage Regulator Modules


Pinout

Connection Diagram


Specifications

Parameter Symbol Maximum Units
VIN12V VIN MAX -0.3 to 14 V
BOOT to DRVGND   -0.3 to 25 V
BOOT to BOOTLO   -0.3 to 15 V
Digital Inputs   -0.3 to 7.3 V
AGND to DRVGND   ±0.5 V
LOHIB to AGND   -0.3 to 14 V
LOSENSE to AGND   -0.3 to 14 V
IOTLO to AGND   -0.3 to 14 V
HISENSE to AGND   -0.3 to 14 V
VSENSE to AGND   -0.3 to 5 V
Continuous Power Dissipation, TA = 25 PD 1.2 W
Continuous Power Dissipation, TC = 25 PD 6.25 W
Operating Junction Temperature Range TJ 0 to +125
Lead Temperature (Soldering) 10 Sec. TL 300
Storage Temperature T STG -65 to 150



Description

The SC1159 is a synchronous-buck switch-mode controller designed for use in single ended power supply applications where efficiency is the primary concern. The controller is a hysteretic type, with a user selectable hysteresis.

The SC1159 is ideal for implementing DC/DC converters needed to power advanced microprocessors such as Pentium® llI and Athlon®, in both single and multiple processor configurations. Inhibit, under-voltage lockout and soft-start functions are included for controlled power-up.

SC1159 features include an integrated 5 bit D/A converter, temperature compensated voltage reference, current limit comparator, over-current protection, and an adaptive deadtime circuit to prevent shoot-through of the power MOSFET during switching transitions. Power good signaling, logic compatible shutdown, and over-voltage protection are also provided. The integrated D/A converter provides programmability of output voltage from 1.050V to 1.825V in 25mV increments.

The SC1159 high side driver can be configured as either a ground-referenced or as a floating bootstrap driver.

The high and low side MOSFET drivers have a peak current rating of 2 amps.




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