参数资料
型号: LT3471EDD#PBF
厂商: Linear Technology
文件页数: 2/16页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ DL 10DFN
标准包装: 121
类型: 升压(升压),反相,回扫,Sepic
输出类型: 可调式
输出数: 2
输出电压: 1 V ~ 40 V
输入电压: 2.4 V ~ 16 V
PWM 型: 电流模式
频率 - 开关: 1.2MHz
电流 - 输出: 1.3A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
包装: 管件
供应商设备封装: 10-DFN(3x3)
产品目录页面: 1331 (CN2011-ZH PDF)
LT3471
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V IN Voltage ................................................................16V
PIN CONFIGURATION
TOP VIEW
SW1, SW2 Voltage ..................................... –0.4V to 42V
FB1N
1
10 SW1
FB1N, FB1P, FB2N, FB2P Voltage......... 12V or V IN – 1.5V
SHDN /SS1, SHDN /SS2 Voltage ............................... 16V
V REF Voltage.............................................................1.5V
Maximum Junction Temperature ........................ 125°C
FB1P
V REF
FB2P
FB2N
2
3
4
5
11
9 SHDN /SS1
8 V IN
7 SHDN /SS2
6 SW2
Operating Temperature Range (Note 2) ...– 40°C to 85°C
Storage Temperature Range................... – 65°C to 125°C
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
T JMAX = 125°C, θ JA = 43°C/ W, θ JC = 3°C/W
EXPOSED PAD (PIN 11) IS GND MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3471EDD#PBF
LEAD BASED FINISH
LT3471EDD
TAPE AND REEL
LT3471EDD#TRPBF
TAPE AND REEL
LT3471EDD#TR
PART MARKING
LBHM
PART MARKING
LBHM
PACKAGE DESCRIPTION
10-Lead (3mm × 3mm) Plastic DFN
PACKAGE DESCRIPTION
10-Lead (3mm × 3mm) Plastic DFN
TEMPERATURE RANGE
–40°C to 85°C
TEMPERATURE RANGE
–40°C to 85°C
Consult LTC Marketing for parts speci?ed with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
ELECTRICAL CHARACTERISTICS The ● denotes speci?cations which apply over the full operating
temperature range, otherwise speci?cations are T A = 25°C. V IN = V SHDN = 3V unless otherwise noted.
PARAMETER
Minimum Operating Voltage
Reference Voltage
Reference Voltage Current Limit
Reference Voltage Load Regulation
Reference Voltage Line Regulation
Error Ampli?er Offset
CONDITIONS
(Note 3)
0mA ≤ I REF ≤ 100μA (Note 3)
2.6V ≤ V IN ≤ 16V
Transition from Not Switching to Switching, V FBP = V FBN = 1V
l
MIN
0.991
0.987
1
TYP
2.1
1.000
1.4
0.1
0.03
±2
MAX
2.4
1.009
1.013
0.2
0.08
±3
UNITS
V
V
V
mA
%/100μA
%/V
mV
FB Pin Bias Current
V FB = 1V (Note 3)
l
60
100
nA
Quiescent Current
Quiescent Current in Shutdown
Switching Frequency
V SHDN = 1.8V, Not Switching
V SHDN = 0.3V, V IN = 3V
1
2.5
0.01
1.2
4
1
1.4
mA
μA
MHz
Maximum Duty Cycle
Minimum Duty Cycle
l
90
86
94
15
%
%
%
Switch Current Limit
Switch V CESAT
Switch Leakage Current
At Minimum Duty Cycle
At Maximum Duty Cycle (Note 4)
I SW = 0.5A (Note 5)
V SW = 5V
1.5
0.9
2.05
1.45
150
0.01
2.6
2.0
250
1
A
A
mV
μA
SHDN /SS Input Voltage High
1.8
V
3471fb
2
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