MAX5019CSA+T Maxim Integrated Products, MAX5019CSA+T Datasheet - Page 9
![IC CNTRLR PWM CRNT MD 8-SOIC](/photos/1/39/13902/8-soic_21-0042b_sml.jpg)
MAX5019CSA+T
Manufacturer Part Number
MAX5019CSA+T
Description
IC CNTRLR PWM CRNT MD 8-SOIC
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5020ESA.pdf
(14 pages)
Specifications of MAX5019CSA+T
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
302kHz
Duty Cycle
85%
Voltage - Supply
13 V ~ 110 V
Buck
No
Boost
No
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
0°C ~ 70°C
Package / Case
8-SOIC (3.9mm Width)
Frequency-max
302kHz
Duty Cycle (max)
85 %
Output Current
1000 mA
Mounting Style
SMD/SMT
Switching Frequency
275 KHz
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Synchronous Pin
No
Topology
Flyback, Forward
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
to 2.4V, the internal voltage reference. Pull V
below 0.25V to disable the controller.
Undervoltage lockout shuts down the controller when
V
erence remain on during shutdown.
Figure 3. Nonisolated Flyback Converter
Figure 4. Isolated Flyback Converter
CC
Current-Mode PWM Controllers with Integrated
is less than 6.6V. The regulators for V+ and the ref-
_______________________________________________________________________________________
V
IN
V
IN
R
R
1
2
C
C
C
C
C
DD
CC
C
SS
DD
CC
SS
V
V
SS_SHDN
V
FB
V
SS_SHDN
DD
CC
DD
CC
SS_SHDN
MAX5019
MAX5020
MAX5019
MAX5020
NDRV
The current-sense (CS) comparator and its associated
logic limit the peak current through the MOSFET.
Current is sensed at CS as a voltage across a sense
resistor between the source of the MOSFET and GND.
To reduce switching noise, connect CS to the external
MOSFET source through a 100Ω resistor or an RC low-
NDRV
GND
GND
CS
V+
FB
CS
V+
N
N
T
T
C
100Ω
M1
C
100Ω
IN
IN
M1
N
P
N
P
R
SENSE
R
SENSE
N
N
Startup Circuit
S
S
Current-Sense Comparator
C
R
R
OUT
1
2
V
C
OUT
OUT
V
OUT
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