LM25007EVAL National Semiconductor, LM25007EVAL Datasheet - Page 2

• Manufacturer Part Number: LM25007EVAL
• Description: BOARD EVALUATION LM25007
• Manufacturer: National Semiconductor

Specifications of LM25007EVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 5V
• Current - Output: 450mA
• Voltage - Input: 9 ~ 42V
• Regulator Topology: Buck
• Frequency - Switching: 306kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM25007
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -

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Connection Diagram
Ordering Information
Pin Descriptions
Pin
1
2
3
4
5
6
7
8
-
Order Number
LM25007MMX
LM25007SDX
LM25007MM
LM25007SD
RON/SD
Name
RTN
VCC
BST
RCL
VIN
SW
FB
EP
Switching Node
Boost Boot–strap capacitor input
Current Limit OFF time programming pin
Circuit Ground
Feedback Signal from Regulated Output
On-time set pin
Output from the internal high voltage bias regulator. If an auxiliary voltage is available to raise the voltage
Input supply voltage
Exposed pad, underside of the LLP package option Exposed metal pad on the LLP package underside. It
Package Type
MSOP-8
MSOP-8
Description
LLP-8
LLP-8
8-Lead MSOP, LLP
2
NSC Package Drawing
20165502
MUA08A
MUA08A
SDC08A
SDC08A
Power switching node. Connect to the inductor,
bootstrap capacitor, and free-wheeling diode.
An external capacitor is required between the BST
and the SW pins. A 0.01µF ceramic capacitor is
recommended.
A resistor between this pin and RTN sets the off-time
when current limit is detected. The off-time is preset
to 17 µs if FB = 0V .
This pin is connected to the inverting input of the
internal regulation comparator. The regulation
threshold is 2.5V.
A resistor between this pin and VIN sets the switch on-
time as a function of Vin. The minimum recommended
on-time is 300ns at the maximum input voltage.
on this pin above the regulation setpoint (7V), the
internal series pass regulator will shutdown, reducing
the IC power dissipation. Do not exceed 14V. This
output provides gate drive power for the internal Buck
switch. An internal diode is provided between this pin
and the BST pin. A local 0.1uF decoupling capacitor
is recommended.
Recommended operating range: 9V to 42V.
is recommended to connect this pad to the PC board
ground plane to aid in heat dissipation.
Application Information
1000 Units on Tape and Reel
3500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
Supplied As