LM2737MTC/NOPB National Semiconductor, LM2737MTC/NOPB Datasheet - Page 17
![IC REG CTRLR BUCK N-CH 14TSSOP](/photos/6/62/66280/pkg_mtc14_sml.jpg)
LM2737MTC/NOPB
Manufacturer Part Number
LM2737MTC/NOPB
Description
IC REG CTRLR BUCK N-CH 14TSSOP
Manufacturer
National Semiconductor
Type
Step-Down (Buck)r
Datasheet
1.LM2727MTCNOPB.pdf
(22 pages)
Specifications of LM2737MTC/NOPB
Internal Switch(s)
No
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
0.6 ~ 13.5 V
Current - Output
20A
Frequency - Switching
50kHz ~ 2MHz
Voltage - Input
2.2 ~ 16 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
14-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2737MTC
*LM2737MTC/NOPB
LM2737MTC
*LM2737MTC/NOPB
LM2737MTC
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM2737MTC/NOPB
Manufacturer:
MICREL
Quantity:
27
Part Number:
LM2737MTC/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
Example Circuits
This circuit shows the LM27x7 paired with a cost effective
solution to provide the 5V chip power supply, using no extra
components other than the LM78L05 regulator itself. The
input voltage comes from a ’brick’ power supply which does
In situations where low cost is very important, the LM27x7
can also be used as an asynchronous controller, as shown in
the above circuit. Although a a schottky diode in place of the
bottom FET will not be as efficient, it will cost much less than
the FET. The 5V at low current needed to run the LM27x7
could come from a zener diode or inexpensive regulator,
(Continued)
FIGURE 7. 12V Unregulated to 3.3V, 3A, 750kHz
FIGURE 8. 12V to 5V, 1.8A, 100kHz
17
not regulate the 12V line tightly. Additional, inexpensive 10uF
ceramic capacitors (Cinx and Cox) help isolate devices with
sensitive databands, such as DSL and cable modems, from
switching noise and harmonics.
such as the one shown in Figure 7. Because the LM27x7
senses current in the low side MOSFET, the current limit
feature will not function in an asynchronous design. The
ISEN pin should be left open in this case.
20049409
20049408
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