参数资料
型号: LT3692IUH#TRPBF
厂商: Linear Technology
文件页数: 3/36页
文件大小: 0K
描述: IC REG BUCK ADJ 3.5A DL 32QFN
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 0.8 V ~ 34.2 V
输入电压: 3.6 V ~ 36 V
PWM 型: 电流模式
频率 - 开关: 110kHz ~ 2.5MHz
电流 - 输出: 3.5A
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: 32-WFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 32-QFN 裸露焊盘(5x5)
LT3692
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. V VIN1/2 = 15V unless otherwise specified. (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Feedback Voltage Regulation
Feedback Voltage Offset Ch 1 to Ch 2
Feedback Bias Current Ch 1/2
V VIN1/2 = 3 to 40V, V VC1/2 = 0.6 to 1.6V
V VC1/2 = 1V
V FB1/2 = 0.8V, V VC1/2 = 1V
l
l
l
780
–12
0
806
0
85
830
12
200
mV
mV
nA
T J Output Voltage (Note 7)
T J = 25°C, I TJ = 25μA, Temperature = 25°C
I TJ = 25μA, Temperature = 125°C
I TJ = 25μA, Temperature = –40°C
250
1.23
–380
mV
V
mV
T J Error
Error Amp g m Ch 1/2
Error Amp Source Current Ch 1/2
Error Amp Sink Current Ch 1/2
Error Amp High Clamp Ch 1/2
Error Amp Switching Threshold Ch 1/2
V VC1/2 = 1V, I VC1/2 = ±5μA
V FB1/2 = 0.6V, V VC1/2 = 1V
V FB1/2 =1V, V VC1/2 = 1V
V FB1/2 = 0.6V
V FB1/2 = 0.6V
l
–60
350
19
22
1.7
0.75
0
400
25
28
1.9
0.9
60
450
31
34
2.1
1.05
mV
μMho
μA
μA
V
V
Soft-Start Source Current Ch 1/2
Soft-Start V OH Ch 1/2
Soft-Start Sink Current Ch 1/2
Soft-Start V OL Ch 1/2
Soft-Start to Feedback Offset Ch 1/2
Soft-Start Sink Current Ch 1/2 POR
Soft-Start POR Threshold Ch 1/2
Soft-Start SW Disable Ch 1/2
CMPI Bias Current Ch 1/2
CMPO Leakage Ch 1/2
CMPI Threshold Ch 1/2
CMPI Threshold Ch 1/2 of V FB1/2
CMPI Hysteresis Ch 1/2
CMPO Sink Current Ch 1/2
RT/SYNC Reference Current
Minimum Switching Frequency
Switching Frequency
Maximum Switching Frequency
V FB1/2 = 0.9V, V SS1/2 = 0.05V
V FB1/2 = 0.9V
V FB1/2 = 0.4V, V SS1/2 = 2V
V FB1/2 = 0V
V VC1/2 = 1V, V SS1/2 = 0.4V
V FB1/2 = 0V, V SS1/2 = 0.12V (Note 8)
V FB1/2 = 0V (Note 8)
V FB1/2 = 0V (Note 8)
V CMPI1/2 = 0.8V
V CMP1/2 = 0.8V, V CMPO1/2 = 25V,
V CMPI1/2 Rising
V CMPI1/2 Rising (Note 9)
V CMPI1/2
V CMPI1/2 = 0.6V, V CMPO1/2 = 0.2V,
V FB1/2 = 0.9V, V RT/SYNC = 0.5V
R RT/SYNC =0Ω
R RT/SYNC = 28k
R RT/SYNC =100k
l
l
l
l
9.5
1.9
0.9
120
–12
150
70
95
–100
700
86
35
200
11.3
50
925
2.25
12
2.15
1.4
160
0
400
90
115
0
70
720
90
60
300
12
110
1
2.5
14.5
2.4
2
200
12
600
120
150
100
200
740
94
85
400
12.7
150
1075
2.75
μA
V
mA
mV
mV
μA
mV
mV
nA
nA
mV
%
mV
μA
μA
kHz
MHz
MHz
Switching Phase Angle Ch 1 ≥ Ch 2
185
Deg
DIV Reference Current
CH1 DIV 2 Threshold
CH1 DIV 4 Threshold
CH1 DIV 8 Threshold
V FB1/2 = 0.9V, V DIV = 0.5V
R RT/SYNC = 0V
R RT/SYNC = 0V
R RT/SYNC = 0V
l
10.5
0.51
0.9
1.45
12
0.58
1.05
1.55
13.5
0.61
1.1
μA
V
V
V
3
CLKOUT V OL
CLKOUT V OH
CLKOUT to SW1ON Delay ( t DCLKOSW1 )
CLKOUT to SW2ON Delay ( t DCLKOSW2 )
I CLKOUT = –100μA
I CLKOUT = 100μA
CLKOUT Rising
CLKOUT Falling
For more information www.linear.com/3692
0.25
2
60
30
V
V
ns
ns
3692fa
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