MP2000DJ-1.0 MPS [Monolithic Power Systems], MP2000DJ-1.0 Datasheet - Page 5

• Manufacturer Part Number: MP2000DJ-1.0
• Description: Low Input Voltage 150mA Linear Regulator
• Manufacturer: MPS [Monolithic Power Systems]

OPERATION
The MP2000 is a low-current, low-voltage,
low-dropout linear regulator. It is intended for
use in devices that require very low voltage and
low quiescent current power such as wireless
modems, pagers and cellular phones.
APPLICATION INFORMATION
Setting the Output Voltage
The output voltage can be adjusted by
changing the values of the external resistor
divider.
TYPICAL APPLICATION CIRCUIT - ADJUSTABLE
MP2000 Rev. 0.92
3/2/2006
TM
V
V
EN
IN
V
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
1
3
IN
Figure 2—Typical Application Circuit with V
V
1.35V to 6.0V
IN
+
--
Figure 1—Adjustable Regulator
MP2000 – LOW INPUT VOLTAGE, 150mA LINEAR REGULATOR
1
3
© 2006 MPS. All Rights Reserved.
2
REFERENCE
IN
EN
MP2000-ADJ
BANDGAP
www.MonolithicPower.com
GND
2
OUT
FB
5
5
4
4
V
The MP2000 uses a PNP pass element and
features internal thermal shutdown and an
internal current limit circuit.
Use the following equation to determine these
values:
Typically R1 + R2 are recommended to be less
than 100kΩ.
In Figure 2, C2 is added for improved transient
response.
FB
EXTERNAL
RESISTOR
DIVIDER
R1
R2
C2
100nF
V
C
OUT
OUT
BYP
MP2000_F02_TAC01
= 1.2V
=
OUTPUT
1.2V
0
C
OUT
5 .
V
V
×
MP2000_F01_BD02
OUT
⎛
⎜
⎝
1
+
R
R
1
2
⎞
⎟
⎠
5