参数资料
型号: LT3571IUD#TRPBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: 0.57 A SWITCHING REGULATOR, 2300 kHz SWITCHING FREQ-MAX, PQCC16
封装: 3 X 3 MM, 0.50 MM PITCH, LEAD FREE, PLASTIC, MO-220WEED-2, QFN-16
文件页数: 10/16页
文件大小: 215K
代理商: LT3571IUD#TRPBF
LT3571
3
3571fa
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C, VIN = 3V, VSHDN = 3V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switching Frequency
RT = 12.1k
RT = 4.22k
RT = 56.2k
l
0.85
1.7
210
1
2
250
1.15
2.3
280
MHz
kHz
Maximum Duty Cycle
RT = 56.2k (250kHz)
SYNC = 300kHz Clock Signal, RT = 56.2k
RT = 12.1k (1MHz)
RT = 4.22k (2MHz)
l
95
92
85
75
97
96
90
80
%
Switch Current Limit
370
470
570
mA
Switch VCESAT
ISW = 200mA
240
mV
Switch Leakage Current
VSW = 75V
2
μA
Schottky Forward Voltage
ISCHOTTKY = 200mA
850
mV
Schottky Reverse Leakage
VOUT – VSW = 75V
5
μA
SHDN Voltage High
1.5
V
SHDN Voltage Low
0.4
V
SHDN Pin Bias Current
50
65
μA
CTRL to FB Offset
VCTRL = 0.5V
l
–5
–10
5
15
20
mV
CTRL Input Bias Current
Current Out of Pin, VCTRL = 0.5V
20
100
nA
APD Current Monitor Gain
250nA ≤ IAPD < 10μA, 10V < VMONIN < 75V
10μA ≤ IAPD ≤ 2.5mA, 20V < VMONIN < 75V
l
0.185
0.194
0.20
0.215
0.206
Monitor Output Voltage Clamp
11.5
V
APD Monitor Voltage Drop
VMONIN – VAPD, IAPD = 1mA
l
4.8
5
5.2
V
MONIN Pin Current Limit
VMONIN = 40V, VAPD = 0V
30
mA
Note 2: The LT3571E is guaranteed to meet specied performance from
0°C to 125°C junction temperature. Specications over the –40°C to
125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3571I is guaranteed to meet performance specications over the –40°C
to 125°C operating junction temperature range.
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