参数资料
型号: LT8582IDKD#TRPBF
厂商: Linear Technology
文件页数: 34/36页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ 3A 24DFN
标准包装: 2,500
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: 最高 42V
输入电压: 2.5 V ~ 22 V
PWM 型: 电流模式
频率 - 开关: 200kHz ~ 2.5MHz
电流 - 输出: 3A
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: 24-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 24-DFN(7x4)
LT8582
TYPICAL APPLICATIONS
12V and 5V Sequenced Outputs from a 3V to 19V Input*
V IN
3V to 19V
C IN1
10μF
L1
8.2μH
SWA1
SWB1
C1
2.2μF
D1
L2
8.2μH
V OUT1
12V
0.3A (V IN = 3V)
0.5A (V IN = 5V)
1A (V IN = 12V)
SHDN SYS
10k
M1
M2
115k
10k
V IN1
SHDN1
PG1
SYNC1
LT8582
FBX1
GATE1
V C1
SS1
130k
20k
47pF
C OUT1
10μF
×2
*FOR SYSTEM LEVEL DIAGRAM,
SEE FIGURE 10
CLKOUT1
CLKOUT2
RT1
107k
0.1μF
1.5nF
100k
SYNC2
PG2
GND
RT2
107k
0.1μF
1.5nF
47pF
C IN1 , C IN2 : 10μF, 25V, X7R, 1210
C OUT1 : 10μF, 25V, X7R, 1210
C OUT2 : 22μF, 16V, X7R, 1210
C 1 ,C 2 : 2.2μF, 25V, X7R, 0805
SHDN2
V IN2
SS2
V C2
GATE2
45.3k
14.7k
C OUT2
22μF
×2
D1, D2: CENTRAL SEMI CTLSH2-40M832
L1, L2: COOPER DRQ125-8R2
L3, L4: COOPER DRQ125-6R8
M1, M2: 2N7002
FBX2
L3
6.8μH
SWA2
SWB2
C2
2.2μF
D2
V OUT2
5V
V OUT1
5V/DIV
C IN2
10μF
Start-Up Waveforms (V IN = 12V)
L4
6.8μH
CLKOUT2
2V/DIV
0.7A (V IN = 3V)
1A (V IN = 5V)
1.45A (V IN = 12V)
8582 TA06a
Cycle-to-Cycle (5V Output)
SWA2, SWB2
I L1 + I L2
2A/DIV
V OUT2
2V/DIV
I L3 + I L4
2A/DIV
10V/DIV
V OUT2
50mV/DIV
AC-COUPLED
I L3 + I L4
1A/DIV
2ms/DIV
8582 TA06b
500ns/DIV
8582 TA06c
Efficiency and Power Loss
(V IN = 12V with Load on 12V Output)
Efficiency and Power Loss
(V IN = 12V with Load on 5V Output)
100
90
80
70
60
50
40
30
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
100
90
80
70
60
50
40
30
20
10
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
20
0
0.2
0.4
0.6
0.8
1
0
0
0
0.2
0.4
0.6 0.8
1
1.2
1.4
0
1.6
LOAD CURRENT (A)
8582 TA06d
LOAD CURRENT (A)
8582 TA06e
8582f
34
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