LP2975IMMX-3.3 National Semiconductor, LP2975IMMX-3.3 Datasheet - Page 8

• Manufacturer Part Number: LP2975IMMX-3.3
• Description: IC DRIVER/CONTR MOSFET LDO 8MSOP
• Manufacturer: National Semiconductor
• Type: Positive Fixedr

Specifications of LP2975IMMX-3.3

• Number Of Outputs: 1
• Voltage - Output: 3.3V
• Current - Supply: 180µA
• Voltage - Input: 1.8 ~ 24 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LP2975IMMX-3.3

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Typical Performance Characteristics
is tied to 1.5V. (Continued)
Reference Designs
The LP2975 controller can be used with virtually any
P-channel MOSFET to build a wide variety of linear voltage
regulators.
Since it would be impossible to document all the different
voltage and current combinations that could be built, a num-
ber of reference designs will be presented along with perfor-
mance data for each.
THE PERFORMANCE DATA SHOWN IS ACTUAL TEST
DATA, BUT IS NOT GUARANTEED.
DESIGN #1: V
Application Circuits)
Components
C
C
C
R
IN
OUT
F
SC
= 220 pF
= 82 µF Aluminum Electrolytic
= 10 mΩ
= 120 µF Aluminum Electrolytic
Controller Gain and Phase Response
OUT
= 5V
Load Regulation
@
5A (Refer to Typical
10003415
10003436
Unless otherwise specified: T
8
P-FET = NDP6020P
Heatsink: (assuming V
against a continuous short-circuit is required, a heatsink with
θ
circuit survivability is not needed, a heatsink with θ
6 ˚C/W is adequate.
Performance Data
Dropout Voltage
Dropout voltage is defined as the minumum input-to-output
differential voltage required by the regulator to keep the
output in regulation. It is measured by reducing V
output voltage drops below the nominal value (the nominal
value is the output voltage measured with V
5A for this test.
S-A
≤ 1.5 ˚C/W must be used. However, if continuous short-
DROPOUT VOLTAGE = 323 mV
Leakage Current
IN
A
≤ 7V and T
= 25˚C, C
IN
A
= 1 µF, ON/OFF pin
≤ 60˚C) if protection
IN
= 5.5V). I
10003435
IN
until the
S-A
L
=
≤