lm5041bsdx National Semiconductor Corporation, lm5041bsdx Datasheet - Page 2

• Manufacturer Part Number: lm5041bsdx
• Description: Cascaded Pwm Controller
• Manufacturer: National Semiconductor Corporation

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Connection Diagram
Ordering Information
Pin Descriptions
Pin #
10
11
1
2
3
4
5
6
7
8
9
LM5041BMTCX
Order Number
LM5041BMTC
LM5041BSDX
LM5041BSD
COMP
PGND
AGND
Name
PUSH
PULL
REF
V
Pin
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
Buck Sync Switch
control output
Output of the internal
high voltage start-up
regulator. Regulated to
9 volts.
Output of the push-pull
drivers
Output of the push-pull
drivers
Power ground
Analog ground
Description
Pin
Package Type
TSSOP-16
TSSOP-16
LLP-16
LLP-16
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 5 kΩ resistor pull-up on this pin. The error amplifier provides an
active sink.
Maximum output current: 10 mA. Locally decouple with a 0.1 µF capacitor. Reference
stays low until the V
Buck switch PWM control output. The maximum duty cycle clamp for this output
corresponds to an off time of typically 240 ns per cycle. The LM5101 or LM5102 Buck
stage gate driver can be used to level shift and drive the Buck switch MOSFET.
Sync Switch control output. Inversion of HD output during normal operation. 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 set-point, 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 .
Output of the push-pull gate driver. Output capability of 1.5A peak.
Connect directly to analog ground.
Connect directly to power ground.
16-Lead TSSOP, LLP
2
CC
NSC Package Drawing
UV are satisfied.
Pin Application Information
30086402
SDA-16A
SDA-16A
MTC-16
MTC-16
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92 Units per anti-static tube
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