LX1918CLD MICROSEMI [Microsemi Corporation], LX1918CLD Datasheet - Page 3

• Manufacturer Part Number: LX1918CLD
• Description: 1.8A Step-Down Synchronous Converter
• Manufacturer: MICROSEMI [Microsemi Corporation]

Copyright © 2004
Rev. 1.1, 2005-07-05
Unless otherwise specified, the following specifications apply over the operating ambient temperature
where otherwise noted and the following test conditions: V
Notes
ENTIRE REGULATOR
Input Voltage
Efficiency
Quiescent Current
Line Regulation
Load Regulation
Feedback Voltage
FB Input Current
Internal Oscillator frequency
E/S Pin Bias Current
E/S Logic High Input
E/S Logic Low Input
SYNC Capture Range
SYNC Minimum Pulse Width
MODE Bias Current
MODE Logic High
MODE Logic Low
SW Pin Current Limit
Thermal Shutdown Threshold
Under Voltage Lockout
•
•
1.
2.
3.
TM
Active
Shutdown
Guaranteed by design, but not tested.
Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient
temperature.
Functionality over the -40°C to +85°C operating temperature range is assured by design, characterization, and correlation.
Parameter
1
3
1
1
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
1
V
V
E L E C T R I C A L C H A R A C T E R I S T I C S
V
Symbol
V
PWR,
V
MODE(LO)
V
MODE(HI)
F
E/S(LO)
V
E/S(HI)
I
I
UVLO
OSC
CC
η
FB
FB
V
CC
Integrated Products Division
V
V
V
V
I
V
V
V
V
High or Low; V
V
Peak Current
OUT
OUT
E/S
E/S
IN
FB
E/S
E/S
MODE
E/S
= 2.7 to 5.5V
®
= 0.5V to 0.7V
= 3.6V; V
= GND
= 10mA to 1.5A
= 3.6V; V
= GND
= GND: V
Microsemi
= 1.8V, I
IN
= 3.6V
= 3.7V; V
Test Conditions
OUT
FB
MODE
MODE
MODE
1.8A Step-Down Synchronous Converter
= 1.0V; T = 25°C
E/S
= 200mA
= 3.6V
= V
= 3.6V
= 3.7V; V
IN
P
MODE
RODUCTION
= GND
0.9 x V
2
D
0.588
-40°C
0.75
Min
500
100
130
ATA
-50
2.7
1.6
2.0
IN
≤
S
LX1918
HEET
0.600
T
1.00
Typ
350
140
0.5
0.1
1.0
2.7
92
A
1
1
≤
85°C
0.612
1250
0.1 x
1.25
Max
500
150
6.0
1.0
1.0
0.4
2.0
3.6
2.7
V
50
3
IN
except
LX1918
Units
MHz
kHz
µA
nA
µA
µA
ns
°C
%
%
%
V
V
V
V
A
V
Page 3