LM5010 EVAL/NOPB National Semiconductor, LM5010 EVAL/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM5010 EVAL/NOPB
• Manufacturer: National Semiconductor

Specifications of LM5010 EVAL/NOPB

• Lead Free Status / Rohs Status: Compliant

Pin Description
LLP-10
10
1
2
3
4
5
6
7
8
9
PIN NUMBER
TSSOP-14
1,7,8,14
10
11
12
13
2
3
4
5
6
9
R
NAME
S
ON
RTN
BST
I
V
SW
V
NC
SEN
FB
SS
GND
CC
IN
/SD
Switching Node
Boost pin for bootstrap capacitor
Current sense
Sense Ground
Circuit Ground
Feedback input from the
regulated output
Softstart
On-time control and shutdown
Output from the startup regulator
Input supply voltage
No connection.
DESCRIPTION
3
Internally connected to the buck switch source.
Connect to the inductor, free-wheeling diode, and
bootstrap capacitor.
Connect a 0.022 µF capacitor from SW to this pin.
The capacitor is charged from V
diode during each off-time.
The re-circulating current flows through the internal
sense resistor, and out of this pin to the
free-wheeling diode. Current limit is nominally set at
1.25A.
Re-circulating current flows into this pin to the
current sense resistor.
Ground for all internal circuitry other than the current
limit detection.
Internally connected to the regulation and
over-voltage comparators. The regulation level is
2.5V.
An internal 11.5 µA current source charges an
external capacitor to 2.5V, providing the softstart
function.
An external resistor from V
buck switch on-time. Grounding this pin shuts down
the regulator.
Nominally regulates at 7.0V. An external voltage
(7.5V-14V) can be applied to this pin to reduce
internal dissipation. An internal diode connects V
to V
Nominal input range is 8.0V to 75V.
No internal connection.
IN
.
APPLICATION INFORMATION
IN
to this pin sets the
CC
via an internal
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CC