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LMR24210 Datasheet, PDF (1/18 Pages) National Semiconductor (TI) – SIMPLE SWITCHER® 42Vin, 1.0A Step-Down Voltage Regulator in micro SMD | |||
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LMR24210
October 17, 2011
SIMPLE SWITCHER® 42Vin, 1.0A Step-Down Voltage
Regulator in micro SMD
Features
â Input voltage range of 4.5V to 42V
â Output voltage range of 0.8V to 24V
â Output current up to 1.0A
â Integrated low RDS(ON) synchronous MOSFETs for high
efficiency
â Up to 1 MHz switching frequency
â Low shutdown Iq, 25 µA typical
â Programmable soft-start
â No loop compensation required
â COT architecture with ERM
â 28 bump micro SMD (2.45 x 3.64 x 0.60 mm) packaging
â Fully enabled for WEBENCH®⢠Power Designer
Performance Benefits
â Tiny overall solution reduces system cost
â Integrated synchronous MOSFETs provides high
efficiency at low output voltages
â COT with ERM architecture requires no loop
compensation, reduces component count, and provides
ultra fast transient response
â Stable with low ESR capacitors
Applications
â Point-of-Load Conversions from 5V, 12V and 24V Rails
â Space Constrained Applications
â Industrial Distributed Power Applications
â Power Meters
System Performance
Efficiency vs Load Current
(VOUT = 3.3V)
100
90
80
70
60
50
40
0.0
VIN = 4.5V
VIN = 9V
VIN = 12v
VIN = 24V
VIN = 42v
0.2 0.4 0.6 0.8
LOAD CURRENT (A)
VOUT Regulation vs Load Current
(VOUT = 3.3V)
0.20
0.15
0.10
0.05
0.00
1.0
30173870
-0.05
-0.10
-0.15
-0.20
VIN = 4.5V
VIN = 9V
VIN = 12V
VIN = 24V
VIN = 42V
0.0 0.2 0.4 0.6 0.8 1.0
LOAD CURRENT (A)
30173871
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation
© 2011 National Semiconductor Corporation 301738
www.national.com
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