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MAX5974BETE Datasheet(PDF) 11 Page - Maxim Integrated Products

Part # MAX5974BETE
Description  Active-Clamped, Spread-Spectrum, Current-Mode PWM Controllers
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX5974BETE Datasheet(HTML) 11 Page - Maxim Integrated Products

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Active-Clamped, Spread-Spectrum,
Current-Mode PWM Controllers
11
Pin Configuration
Pin Description
15
16
14
13
5
6
7
8
1
3
EN
4
12
10
9
DCLMP
SS
CSSC
GND
FB
COMP
EP
MAX5974A
MAX5974B
MAX5974C
MAX5974D
2
11
IN
THIN QFN
TOP VIEW
+
PIN
NAME
FUNCTION
1
DT
Dead-Time Programming Resistor Connection. Connect resistor RDT from DT to GND to set the
desired dead time between the NDRV and AUXDRV signals. See the Dead Time section to calculate
the resistor value for a particular dead time.
2
DITHER/
SYNC
Frequency Dithering Programming or Synchronization Connection. For spread-spectrum frequency
operation, connect a capacitor from DITHER to GND and a resistor from DITHER to RT. To
synchronize the internal oscillator to the externally applied frequency, connect DITHER/SYNC to the
synchronization pulse.
3
RT
Switching Frequency Programming Resistor Connection. Connect resistor RRT from RT to GND to
set the PWM switching frequency. See the Oscillator/Switching Frequency section to calculate the
resistor value for the desired oscillator frequency.
4
FFB
Frequency Foldback Threshold Programming Input. Connect a resistor from FFB to GND to set the
output average current threshold below which the converter folds back the switching frequency to
1/2 of its original value. Connect to GND to disable frequency foldback.
5
COMP
Transconductance Amplifier Output and PWM Comparator Input. COMP is level shifted down and
connected to the inverting input of the PWM comparator.


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