参数资料
型号: LT3473AEDE#TRPBF
厂商: Linear Technology
文件页数: 2/12页
文件大小: 0K
描述: IC REG BOOST ADJ 1A 12DFN
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: 可调至 34V
输入电压: 2.2 V ~ 16 V
PWM 型: 电流模式,混合
频率 - 开关: 1.2MHz
电流 - 输出: 1A
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: 12-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 12-DFN(4x3)
LT3473/LT3473A
ABSOLUTE
AXI U
RATI GS (Note 1)
V IN Voltage ............................................................. 16V
SHDN Voltage .......................................................... 16V
SW Voltage ............................................................. 36V
PGOOD Voltage ...................................................... 36V
CAP Voltage ............................................................ 36V
OUT Voltage ........................................................... 36V
FB Voltage .............................................................. 10V
PACKAGE/ORDER I FOR ATIO
CTRL Voltage .......................................................... 10V
NB1, NB2 Voltage ................................................... 36V
NE1, NE2 Voltage ................................................... 36V
Maximum Junction Temperature ......................... 125 ° C
Operating Temperature Range (Note 2) .. – 40 ° C to 85 ° C
Storage Temperature Range ................ – 65 ° C to 125 ° C
ORDER PART
TOP VIEW
ORDER PART
TOP VIEW
NUMBER
CAP
1
12 SW
NUMBER
CAP 1
8
SW
LT3473EDD
OUT
2
11 V IN
LT3473AEDE
OUT 2
CTRL 3
FB 4
9
DD PACKAGE
7
6
5
V IN
SHDN
PGOOD
DD PART MARKING
NB1
NE1
NB2
NE2
3
4
5
6
13
10 SHDN
9 PGOOD
CTRL
8
FB
7
DE PART MARKING
8-LEAD (3mm × 3mm) PLASTIC DFN
T JMAX = 125 ° C, θ JA = 43 ° C/ W
EXPOSED PAD (PIN 9) IS GND
MUST BE SOLDERED TO PCB (NOTE 3)
LBJJ
DE PACKAGE
12-LEAD (4mm × 3mm) PLASTIC DFN
T JMAX = 125 ° C, θ JA = 43 ° C/ W
EXPOSED PAD (PIN 13) IS GND
3473A
MUST BE SOLDERED TO PCB (NOTE 3)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T A = 25 ° C.
V IN = 3V, SHDN = 3V, CTRL = 2V, unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Operation Voltage
Maximum Operation Voltage
2.2
16
V
V
Supply Current
SHDN = 3V, Not Switching
100
μ A
SHDN = 0V
0.1
1
μ A
SHDN Voltage to Enable Chip
SHDN Voltage to Disable Chip
SHDN Pin Bias Current
1.4
2
0.2
V
V
μ A
FB Voltage
FB Voltage Line Regulation
FB Pin Bias Current
CTRL to FB Offset
CTRL Pin Bias Current
FB Threshold for PGOOD
3V < V IN < 16V
FB = 1.27V
CTRL = 0.5V
CTRL = 1V
CTRL = 2V
1.235
1.25
0.01
20
5
50
1.15
1.26
20
V
%/V
nA
mV
nA
V
CTRL = 0.5V
0.40
V
PGOOD Current Capacity
100
μ A
3473f
2
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