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参数资料
| 型号： | LX1673-09CPW-TR |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 1035 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | ROHS COMPLIANT, PLASTIC, TSSOP-20 |
| 文件页数： | 8/13页 |
| 文件大小： | 286K |
| 代理商： | LX1673-09CPW-TR |
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
Copyright
2004
Rev 1.0, 3/18/2005
WWW
.Microse
m
i
.CO
M
LX1673
High Frequency PWM Regulator
PRODUCTION DATA SHEET
TM
ELECTRI CAL CHA RACTERI S TI CS
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C
≤ TA ≤ 70°C except where
otherwise noted and the following test conditions: VCC = 5V, VCCL = 5V, VC1=12V, LDVCC = 12V, TDRV = BDRV = 3000pF Load.
LX1673
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
SWITCHING REGULATORS
VCC
4.5
5.5
V
Input Voltage
VCCL,VC1
16
Operation Current
ICC
Static and Dynamic
6
mA
LDO Operating Current
ILDVCC
1
mA
TA=25°C
0.792
0.8V
0.808
V
Reference Voltage
VSS
0°C ≤ TA ≤ 70°C
0.784
0.816
V
Line Regulation Note 1
-1
1
%
Load Regulation Note 1
-1
1
Dead Time
3000pF Load 2 Volt Level
160
nS
Minimum Pulse Width
All Frequencies
150
nS
Maximum Duty Cycle
LX1673-03 Load = 3000pF
85
%
Maximum Duty Cycle
LX1673-06 Load = 3000pF
75
%
Maximum Duty Cycle
LX1673-09 Load = 3000pF
70
%
ERROR AMPLIFIERS
Input Offset Voltage
VOS
Common Mode Voltage = 1V
-6.0
6.0
mV
DC Open Loop Gain
70
dB
Unity Gain Bandwidth
UGBW
16
MHz
High Output Voltage
VOH
I Source = 2mA
3.8
5.0
V
Low Output Voltage
VOL
I Sink = 10uA
100
mV
Input Common Mode Voltage Range
Input Offset Voltage < 20mV
0.1
3.5
V
Input Bias Current
0 and 3.5 V Common Mode Voltage
100
nA
CURRENT SENSE
Current Sense Bias Current
ISET
VCS = VVS – 0.3V , VVS = 5V
45
50
55
A
Trip Threshold
VTRIP
Referenced to VS , VVS = 5V
260
300
340
mV
Current Sense Delay
TCSD
350
nS
Current Sense Comparator
Operating Current
ICS
Current into VS pin
2
5
mA
OUTPUT DRIVERS – N-CHANNEL MOSFETS
Low Side Driver Operating Current
IVCCL
Static
2.5
mA
High Side Driver Operating Current
IVC1
Static
3
mA
Drive Rise Time, Fall Time
TRF
CL = 3000pF
50
nS
High Level Voltage
VDH
ISOURCE = 20mA, VCCL = 12V
10
11
V
Low Level Voltage
VDL
ISINK = 20mA, VCCL = 12V
0.15
0.25
V
OSCILLATOR
LX1673-03
255
300
345
LX1673-06
510
600
690
PWM Switching Frequency
FSW
LX1673-09
765
900
1035
KHz
Ramp Amplitude
VRAMP
1.25
VPP
EE
LL
EE
CC
TT
RR
IICC
AA
LL
SS
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