MAX5068BAUE+ Maxim Integrated Products, MAX5068BAUE+ Datasheet - Page 8

• Manufacturer Part Number: MAX5068BAUE+
• Description: IC CNTRLR PWM CRNT MD 16TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5068BAUE+

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1.25MHz
• Duty Cycle: 50%
• Voltage - Supply: 10.8 V ~ 24 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Frequency-max: 1.25MHz
• Duty Cycle (max): 50 %
• Output Current: 1000 mA
• Mounting Style: SMD/SMT
• Switching Frequency: 25 KHz to 1250 KHz
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Synchronous Pin: Yes
• Topology: Flyback, Forward
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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