max5068bauet Maxim Integrated Products, Inc., max5068bauet Datasheet - Page 8

• Manufacturer Part Number: max5068bauet
• Description: Max5068 High-frequency, Current-mode Pwm Controller With Accurate Programmable Oscillator
• Manufacturer: Maxim Integrated Products, Inc.

High-Frequency, Current-Mode PWM Controller
with Accurate Programmable Oscillator
8
MAX5068A
MAX5068B
10, 12
_______________________________________________________________________________________
EP
—
11
13
14
15
16
1
2
3
4
5
6
7
8
9
MAX5068C
MAX5068E
10, 12
PIN
EP
11
14
15
16
—
13
1
2
3
4
5
6
7
8
9
MAX5068D
MAX5068F
10, 12
EP
—
11
14
15
16
13
1
2
3
4
5
6
7
8
9
UVLO/EN
SCOMP
FLTINT
NAME
COMP
AGND
PGND
SYNC
NDRV
REG5
HYST
PAD
V
CS
RT
DT
FB
IN
CC
Oscillator-Timing Resistor Connection. Connect a resistor from RT to AGND
to set the internal oscillator frequency.
External-Clock Sync Input. Connect SYNC to AGND when not using an
external clock.
Programmable Hysteresis Input
Slope-Compensation Capacitor Input. Connect a capacitor to AGND to set
the slope compensation.
Dead-Time Adjustment. Connect a resistor from DT to AGND to adjust NDRV
dead time. Connect to REG5 for maximum duty cycle.
Externally Programmable Undervoltage Lockout. UVLO/EN programs the
input start voltage. Drive UVLO/EN to AGND to disable the output.
Error-Amplifier Inverting Input
Error-Amplifier Compensation Output
Fault-Integration Input. A capacitor connected to FLTINT charges with an
internal 60µA current source during repeated current-limit events. Switching
terminates when V
parallel discharges the capacitor. Switching resumes when V
1.6V.
Current-Sense Resistor Connection
Analog Ground. Connect to PGND through a ground plane.
Power Ground. Connect to AGND through a ground plane.
G ate- D r i ver O utp ut. C onnect the N D RV outp ut to the g ate of the exter nal
N - channel FE T.
9V Linear-Regulator Output. Decouple V
capacitor to the AGND plane; also internally connected to the FET driver.
Power-Supply Input. IN provides power for all internal circuitry. Decouple IN
with a minimum 0.1µF ceramic capacitor to AGND (see the Typical
Operating Circuit).
5V Linear-Regulator Output. Decouple to AGND with a 0.1µF ceramic
capacitor.
Exposed Pad. Connect to GND.
FLTINT
reaches 2.9V. An external resistor connected in
FUNCTION
CC
with a minimum 1µF ceramic
Pin Description
FLTINT
drops to