参数资料
型号: LT3571EUD#TRPBF
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG BOOST ADJ 0.47A 16QFN
产品培训模块: APD Biasing
标准包装: 2,500
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 最高 75V
输入电压: 2.7 V ~ 20 V
PWM 型: 电流/电压模式
频率 - 开关: 250kHz ~ 2MHz
电流 - 输出: 470mA
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-WFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 16-QFN-EP(3x3)
LT3571
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C, V IN = 3V, V SHDN = 3V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switching Frequency
Maximum Duty Cycle
R T = 12.1k
R T = 4.22k
R T = 56.2k
R T = 56.2k (250kHz)
SYNC = 300kHz Clock Signal, R T = 56.2k
R T = 12.1k (1MHz)
l
l
0.85
1.7
210
95
92
85
1
2
250
97
96
90
1.15
2.3
280
MHz
MHz
kHz
%
%
%
R T = 4.22k (2MHz)
75
80
%
Switch Current Limit
370
470
570
mA
Switch V CESAT
Switch Leakage Current
Schottky Forward Voltage
Schottky Reverse Leakage
SHDN Voltage High
SHDN Voltage Low
I SW = 200mA
V SW = 75V
I SCHOTTKY = 200mA
V OUT – V SW = 75V
1.5
240
850
2
5
0.4
mV
μA
mV
μA
V
V
SHDN Pin Bias Current
50
65
μA
CTRL to FB Offset
CTRL Input Bias Current
APD Current Monitor Gain
V CTRL = 0.5V
Current Out of Pin, V CTRL = 0.5V
250nA ≤ I APD < 10μA, 10V < V MONIN < 75V
10μA ≤ I APD ≤ 2.5mA, 20V < V MONIN < 75V
l
l
l
–5
–10
0.185
0.194
5
5
20
0.20
0.20
15
20
100
0.215
0.206
mV
mV
nA
Monitor Output Voltage Clamp
11.5
V
APD Monitor Voltage Drop
V MONIN – V APD, I APD = 1mA
l
4.8
5
5.2
V
MONIN Pin Current Limit
V MONIN = 40V, V APD = 0V
30
mA
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.
Note 2: The LT3571E is guaranteed to meet speci?ed performance from
0°C to 125°C junction temperature. Speci?cations 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 speci?cations over the –40°C
to 125°C operating junction temperature range.
3571fa
3
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