LM5010MH/NOPB National Semiconductor, LM5010MH/NOPB Datasheet - Page 16
![IC BUCK ADJ 1A 14TSSOP](/photos/7/0/70080/pkg_mxa14a_sml.jpg)
LM5010MH/NOPB
Manufacturer Part Number
LM5010MH/NOPB
Description
IC BUCK ADJ 1A 14TSSOP
Manufacturer
National Semiconductor
Type
Step-Down (Buck)r
Datasheet
1.LM5010SDNOPB.pdf
(19 pages)
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
*LM5010MH/NOPB
LM5010MH
www.national.com
Applications Information
FIGURE 16. Efficiency vs Load Current and V
FIGURE 15. Efficiency vs V
Circuit of Figure 14
Circuit of Figure 14
IN
(Continued)
20119934
20119935
IN
16
INCREASING THE CURRENT LIMIT THRESHOLD
The current limit threshold is nominally 1.25A, with a mini-
mum guaranteed value of 1.0A. If, at maximum load current,
the lower peak of the inductor current (I
exceeds 1.0A, resistor R
and I
exceed that lower peak current. This resistor diverts some of
the recirculating current from the internal sense resistor so
that a higher current level is needed to switch the internal
current limit comparator. I
where I
the minimum ripple current calculated using Equation 10.
R
CL
is calculated from:
SEN
O(max)
FIGURE 17. Output Voltage Ripple vs V
to increase the current limit threshold to equal or
FIGURE 18. Frequency vs V
is the maximum load current, and I
Circuit of Figure 14
Circuit of Figure 14
CL
PK-
must be added between S
is calculated from:
PK-
IN
in Figure 13)
20119937
20119936
IN
OR(min)
GND
(11)
is