SC2422ACSTR SEMTECH [Semtech Corporation], SC2422ACSTR Datasheet
![no-image](/images/no-image-200.jpg)
SC2422ACSTR
Related parts for SC2422ACSTR
SC2422ACSTR Summary of contents
Page 1
PRELIMINARY - August 7, 2000 DESCRIPTION The SC2422A biphase, current mode controller is de- signed to work with Semtech smart synchronous drivers, such as the SC1205, SC1305 or the SC1405 to provide the DC/DC converter solution for the most demanding ...
Page 2
PRELIMINARY - August 7, 2000 ABSOLUTE MAXIMUM RATINGS Parameter Input DC Rail Voltage to GND PGND to GND Operating Temperature Range Junction Temperature Thermal Resistance Junction to Case Thermal Resistance Junction to Ambient Storage Temperature Range Lead Temperature (Soldering) 10 ...
Page 3
PRELIMINARY - August 7, 2000 ELECTRICAL CHARACTERISTICS (Cont) Unless specified +5V 25° AMB PARAMETER Current Sense Amplifier Amplifier Gain Input Offset Voltage, Input Referred CMRR PSRR Input Common Mode Range Max Differential Signal/ Current ...
Page 4
PRELIMINARY - August 7, 2000 PIN DESCRIPTION Pin 1: VID4 , MSB Pin 2: VID3 Pin 3: VID2 Pin 4: VID 1 Pin 5: VID0 , LSB Pin 6: ERROUT Error-amplifier output. Pin 7: FB Error-amplifier inverting input. Pin 8: ...
Page 5
PRELIMINARY - August 7, 2000 OUTPUT VOLTAGE (VRM 9.0) Unless specified GND High (or Floating 5V, 2-Phase operation A CC VID4 VID3 ...
Page 6
PRELIMINARY - August 7, 2000 Figure 1: SC2422A SCHEMATIC WITH +5V INPUT FOR THE AMD ATHLON BST 3 820uf,16V 820uf,16V 820uf,16V 1u,16V © 2000 SEMTECH CORP. BIPHASE CURRENT MODE CONTROLLER GND BST GND 8 3 652 MITCHELL ROAD NEWBURY PARK ...
Page 7
PRELIMINARY - August 7, 2000 Applications Information The SC2422A is an Input Current Mode Controller de- signed for High Current, High performance two phase DC/DC converters. The Current mode control is imple- mented by generating the PWM ramp from the ...
Page 8
PRELIMINARY - August 7, 2000 Programming the DAC Step Size The SC2422A allows programming the output voltage and the DAC step size by selecting external resistors. The DAC current step size, for one MSB is DAC _ ...
Page 9
PRELIMINARY - August 7, 2000 Where Input current sense resistor Oscillator period OSC G = Current Amplifier Gain CA 0.3V is the ramp added for slope compensation when the output current is near zero. The ...
Page 10
PRELIMINARY - August 7, 2000 OUTLINE DRAWING SO-16 LAND PATTERN SO-16 ECN00-1242 © 2000 SEMTECH CORP. BIPHASE CURRENT MODE CONTROLLER 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC2422A Jedec MS-012AC 10 ...