lm5041sdx National Semiconductor Corporation, lm5041sdx Datasheet - Page 2

• Manufacturer Part Number: lm5041sdx
• Description: Cascaded Pwm Controller
• Manufacturer: National Semiconductor Corporation

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Connection Diagram
Ordering Information
Pin Description
PIN
Order Number
LM5041MTC
LM5041MTCX
LM5041SD
LM5041SDX
1
2
3
4
5
6
7
8
NAME
COMP
PUSH
REF
V
V
HD
FB
LD
CC
IN
Source Input Voltage
Feedback Signal
Output of the Internal Error Amplifier
Precision 5 volt reference output
Main Buck PWM control output
Sync Switch control output
Output from the internal high voltage start-up
regulator. Regulated to 9 volts.
Output of the push-pull drivers
Package Type
TSSOP-16
TSSOP-16
LLP-16
LLP-16
DESCRIPTION
16-Lead TSSOP, LLP
NSC Package Drawing
MTC-16
MTC-16
SDA-16A
SDA-16A
2
Input to start-up regulator. Input range 15V to 100V.
Inverting input for the internal error amplifier. The
non-inverting input is connected to a 0.75V
reference.
There is an internal 5kΩ resistor pull-up on this pin.
The error amplifier provides an active sink.
Maximum output current: 10mA. Locally decouple
with a 0.1µF capacitor. Reference stays low until the
line UV and the V
Buck switch PWM control output. The maximum duty
cycle clamp for this output corresponds to an off time
of typically 240ns per cycle. The LM5101 or LM5102
Buck stage gate driver can be used to level shift and
drive the Buck switch.
Sync Switch control output. Inversion of HD output.
The LM5101 or LM5102 lower drive can be used to
drive the synchronous rectifier switch.
If an auxiliary winding raises the voltage on this pin
above the regulation setpoint, the internal start-up
regulator will shutdown, reducing the IC power
dissipation.
Output of the push-pull gate driver. Output capability
of 1.5A peak .
20074902
APPLICATION INFORMATION
CC
UV are satisfied.
Supplied As
92 Units per anti-static tube
2500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel