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参数资料
| 型号： | LX1677CPW-TR |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING CONTROLLER, 1100 kHz SWITCHING FREQ-MAX, PDSO38 |
| 封装： | ROHS COMPLIANT, PLASTIC, TSSOP-38 |
| 文件页数： | 12/16页 |
| 文件大小： | 320K |
| 代理商： | LX1677CPW-TR |
LX1677
PRODUCTION DATA SHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
WWW
.Microse
m
i
.CO
M
AMD64 Processor VRM Controller
Copyright
2000
Rev 1.1, 2003-03-03
TM
ELECTRI CAL CHA RACTERI S TI CS ( C ONT)
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, VIN = 12V, Switching Frequency = 500KHz.
LX1677
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
PHASE 2 DIFFERENTIAL AMPLIFIER
Input Offset Voltage
VOS
LP1=LP2
-6
6
mV
Gain
ADA
0.98
1
1.02
V/V
Common Mode Rejection Ratio
CMRRDA
Common Mode Voltage = 0 to 2 V
60
dB
Input Resistance
RB
180
K
Unity Gain Bandwidth
UGBW
4
MHz
TRANSIENT CONTROL LOOP
Voltage Droop Sense
Propagation Delay : FB+ and
FB- to I-MAX
50
nS
Voltage Overshoot Sense
Propagation Delay : FB+ and
FB- to I-MIN
50
nS
Voltage Droop Sense Threshold
VDFOUT Rising 3000pF Load
40
mV
Voltage Overshoot Sense
Threshold
VDFOUT Falling 3000pF Load
40
mV
OUTPUT DRIVERS
Driver
Rise Time
Fall Time
tRISE
tFALL
CL = 3000pF, VCx - VSx = 5V
50
nS
High Side Driver Voltage:
[VHOx - VVSx]
Drive High
Drive Low
VHOx = 20mA, VCx - VSx = 5.0 V
VHOx = -20mA, VCx - VSx = 5.0 V
4.8
4.9
0.1
0.2
V
Low Side Driver Voltage:
[VLOx – VPGN]
Drive High
Drive Low
VLOx = 20mA, VCCL - VPGN = 5.0 V
VLOx = -20mA, VCCL - VPGN = 5.0 V
4.8
4.9
0.1
0.2
V
High Side Driver Current
IHOx
VCx - VSx = 5.0 V, Load = 3300pf at
<500nSec
1
A
Lower MOSFET Driver Current
ILOx
VCCL - PGN = 5.0 V, Load = 3300pf at
<500nSec
1.5
A
PHASE 1 OVER CURRENT PROTECTION
Current Sense Bias Current
IILIM1
44
50
60
A
Current Sense Delay
tCSD(ILIM1)
200
400
500
nS
TRANSIENT CORRECTION LOOP OVER CURRENT PROTECTION
Current Sense Bias Current
IILIM3
40
50
60
A
Current Sense Delay
tCSD(ILIM3)
200
400
500
nS
ENABLE INPUT / VOLTAGE IDENTIFICATION (VID)
Logic Low Threshold
1.5
V
Hysteresis
0.3
V
Pullup Resistance
100
K
POWER GOOD
Low Output Voltage
VPWGD
IPWGD = -3mA
0.5
V
EE
LL
EE
CC
TT
RR
IICC
AA
LL
SS
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