LX8816 Microsemi Corporation, LX8816 Datasheet - Page 5

• Manufacturer Part Number: LX8816
• Description: Dual Channel 1a Low Dropout Regulator
• Manufacturer: Microsemi Corporation

Copyright © 2000
Rev. 1.2c, 2005-05-18
V
V
45
40
35
30
25
20
15
10
IN
500mV
V / DIV
5
0
500m
100
50mV
50mV
/ DIV
IN
/ DIV
/ DIV
= 20µF Ceramic, ESR= 45mΩ; V1,V2 = 10µF Ceramic, ESR= 75mΩ
1mA
1V /
DIV
1A
= 5V, C
TM
RIPPLE REJECTION VS. FREQUENCY
IN
LOAD TRANSIENT RESPONSE
TURN ON CHARACTERISTICS
= 22µF, C
1000
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
FREQUENCY (HZ)
OUT1,2
V2 = 3.3V 1A Step Load
V1 = 1.5V 180Ω Load
100µs / DIV
2µs / DIV
= 10µF, V
10000
2
V2 = 3.3V
V1 = 1.5V
=3.3V, I
V
C H A R A C T E R I S T I C C U R V E S
IN
= 5V
OUT2
Integrated Products
®
Microsemi
=1A
100000
Dual Channel 1A Low Dropout Regulator
V
IN
4.5
3.5
2.5
1.5
0.5
= 22µF Tantalum, ESR=232mΩ; V1,V2 = 10µF Tantalum, ESR=198mΩ
20mV(A
C) / DIV
5
4
3
2
1
0
500mV
50mV
50mV
50mV
200mA
/ DIV
/ DIV
0.5
/ DIV
/ DIV
0mA
/ DIV
1A
1
V1 = 1.5V
P
V
V2 = 3.3V 1A Step Load
IN
RODUCTION
V2 = 3.3V
V1 = 1.5V
LOAD TRANSIENT RESPONSE
= 5V
Ichip, ma
V2,(Rext=13K ohms)
V1, adj(Rext=909 ohms)
CURRENT LIMIT RESPONSE
1.5
V
OUT
AND I
2
D
CHIP
2.5
V
ATA
IN
100µs / DIV
(Volts)
2µs / DIV
VS. V
Rising Load
3
S
On V2
HEET
IN
RAMP
3.5
1.2A
4
LX8816
4.5
5
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