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参数资料
| 型号： | LX1673-09CPWTR |
| 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： | PLASTIC, TSSOP-20 |
| 文件页数： | 9/13页 |
| 文件大小： | 259K |
| 代理商： | LX1673-09CPWTR |
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright
2000
Rev 0.4a, 5/25/2004
WWW
.Microse
m
i
.CO
M
LX1673
High Frequency PWM Regulator
PRELIMINARY DATA SHEET
TM
ELECTRICAL CHA RACTERISTICS (CONTINUED)
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C
≤ T
A ≤ 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 Condition
Min
Typ
Max
Units
UVLO AND SOFT-START (SS)
Start-Up Threshold (VC1, VCCL, LDVCC)
3.5
4.0
4.5
V
Start-Up Threshold (VCC)
4.0
4.25
4.5
V
Hysteresis VCC
0.1
V
SS Input Resistance
RSS
20
K
SS Shutdown Threshold
VSHDN
0.1
V
Hiccup Mode Duty Cycle
CSS = 0.1F
10
%
LINEAR REGULATOR CONTROLLER
Voltage Reference Tolerance
VLDFB = .8V, COUT = 330F
2
%
Source Current
IHDRV
VOUT = 10V
30
mA
Sink Current
ILDRV
VOUT = 0.4V
0.2
mA
DISABLE INPUTS
Threshold
1
V
PWM Disable
DIS
Internal Pull down Resistance
80
K
Threshold
2.5
V
LDO Disable
LDDIS
Internal Pull down Resistance
100
K
POWER GOOD
Drain to Source Voltage
I = 3mA
0.4
V
Leakage
0.05
A
Note 1:
System Specification
Note 2:
Low duty cycle pulse testing techniques are used which maintain junction and case temperatures equal to the ambient temperature
Note 3:
Functionality over the –40 to 85 deg C operating temperature range is assured by design, characterization, and statistical process
control
EE
LL
EE
CC
TT
RR
IICC
AA
LL
SS
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