LP2967IBP-2528 National Semiconductor, LP2967IBP-2528 Datasheet - Page 13
![no-image](/images/manufacturer_photos/0/4/469/national_semiconductor_sml.jpg)
LP2967IBP-2528
Manufacturer Part Number
LP2967IBP-2528
Description
IC REG LDO 150MA DUAL 8USMD
Manufacturer
National Semiconductor
Datasheet
1.LP2967ITP-1833NOPB.pdf
(18 pages)
Specifications of LP2967IBP-2528
Regulator Topology
Positive Fixed
Voltage - Output
2.5V, 2.8V
Voltage - Input
2.1 ~ 16 V
Voltage - Dropout (typical)
0.24V @ 150mA
Number Of Regulators
2
Current - Output
150mA
Current - Limit (min)
200mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-MicroSMD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LP2967IBP-2528TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LP2967IBP-2528
Manufacturer:
FAIRCHILD
Quantity:
3 000
Application Hints
EXTERNAL CAPACITORS
The LP2967 low dropout regulator requires two external
capacitors, C
stability. C
capacitors must be correctly selected with respect to capaci-
tance values for all three capacitors and ESR value for
C
Input Capacitor
An input capacitor with a minimum capacitance value of 1µF
is required between the LP2967 input and ground (the
amount of capacitance may be increased without limit). This
capacitor must be located a distance of not more than 0.5
inches from the input pin and returned to a clean analog
ground. Any good quality ceramic or tantalum may be used
for this capacitor.
Output Capacitor
The output capacitor must meet the requirement for mini-
mum capacitance value of 2.2 µF and also have an appro-
priate ESR (equivalent series resistance) value. The LP2967
is actually designed to work with ceramic or tantalum output
capacitors, utilizing circuitry which allows the regulator to be
stable with an output capacitor whose ESR is as low as 4
mΩ. It may also be possible to use a film capacitor at the
output, but this type is not as attractive for reasons of size
and cost.
Important: The output capacitor must maintain its ESR in
the stable region over the full operating temperature range of
the application to assure stability. The minimum required
amount of output capacitance is 2.2 µF. Output capacitor
size can be increased without limit. It is important to remem-
ber that capacitor tolerance and variation with temperature
must be taken into consideration when selecting an output
capacitor so that the minimum required amount of output
capacitance is provided over the full operating temperature
range.
OUT
LP2967-3.3V Region of Stability with 10 µF C
.
BYPASS
IN
and C
may be used to reduce output noise. The
OUT
to assure the device’s output
10114208
OUT
13
LP2967-2.5V Region Of Stability with 4.7 µF C
LP2967-3.3V Region of Stability with 4.7 µF C
LP2967-2.5V Region Of Stability with 10 µF C
10114207
10114209
10114210
www.national.com
OUT
OUT
OUT