LM5010MH/NOPB National Semiconductor, LM5010MH/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM5010MH/NOPB
• Description: IC BUCK ADJ 1A 14TSSOP
• Manufacturer: National Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM5010MH/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 2.5 ~ 70 V
• Current - Output: 1A
• Frequency - Switching: 1MHz
• Voltage - Input: 8 ~ 75 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP Exposed Pad, 14-eTSSOP 14-HTSSOP
• Primary Input Voltage: 75V
• No. Of Outputs: 1
• Output Voltage: 70V
• Output Current: 1A
• Voltage Regulator Case Style: TSSOP
• No. Of Pins: 14
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Dc: 1030
• For Use With: LM5010 EVAL - BOARD EVALUATION LM5010
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: *LM5010MH; *LM5010MH/NOPB; LM5010MH

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
www.national.com
CC