lx1912 Microsemi Corporation, lx1912 Datasheet - Page 6

• Manufacturer Part Number: lx1912
• Description: Vref @ 800mv, 1.0a, 1.2mhz Pwm Current Mode Pwm Buck Regulator
• Manufacturer: Microsemi Corporation

Copyright © 2005
Rev. 1.0, 2006-09-06
0.8
0.4
0.2
1.4
1.2
0.6
1
0
Figure 6 – Step Load Response 300mA to 800mA,
UVLO THRESHOLDS- VIN RISING and FALLING
TM
Figure 4– Under Voltage Lockout for V
L = 2.7µH, C
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
VIN, volts
OUT
= 30µF
C H A R A C T E R I S T I C C U R V E S
Integrated Products Division
IN
®
120°C
0°C
Microsemi
Figure 7– Soft Start Power On, L = 2.7µH, C
VREF @ 800mV, 1.0A, 1.2MHz PWM
1.4.E+06
1.3.E+06
1.2.E+06
1.1.E+06
1.0.E+06
9.0.E+05
8.0.E+05
7.0.E+05
6.0.E+05
5.0.E+05
4.0.E+05
3.0.E+05
2.0.E+05
1.0.E+05
Figure 5 – PFM / PWM Range of Output Switch
0.001
P
RODUCTION
PWM Frequency vs Load Current
I
OUT
Load Current, A
0.01
= 0mA
D
ATA SHEET
DC
0.1
OUT
= 30µF,
LX1912
1
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