参数资料
型号: LT8582IDKD#PBF
厂商: Linear Technology
文件页数: 8/36页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ 3A 24DFN
标准包装: 52
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: 管件
供应商设备封装: 24-DFN(7x4)

LT8582
BLOCK DIAGRAM
R FBX
FBX1
OPTIONAL
V IN
C IN
R PG
L1
D1
C OUT1
R GATE
M 1
C OUT2
V OUT
GATE1
PG1
SOFT-START
VC1
2.1V
1mA
55mV
+
DIE TEMP
165°C
250k
1.84V
+
START-UP
AND FAULT
LOGIC
+
V IN1
22.2V
(MIN)
+
1.15V
FBX1
SS1
DRIVER
DISABLE
+
65mV
C SS
SHDN1
I SWA1
2A
(MIN)
T D ~ 30ns
SWB1
50k
1.31V
COMPARATOR
+
Q2
SWA1
V IN1
1.204V
REFERENCE
UVLO
A3
R
SR1
S
Q
DRIVER
28mΩ
Q1
FBX1
14.5k
+
A1
A4
+
R S
22mΩ
+
RAMP
GENERATOR
GND
14.5k
A2
FREQUENCY ÷N
FOLDBACK
ADJUSTABLE
OSCILLATOR
SS1
SYNC
BLOCK
V C1
SYNC1
RT1
CLKOUT**
R C
C C
R T
8582 BD
**BLOCK DIAGRAM FOR CH1 IS SHOWN. BLOCK DIAGRAM FOR CH2 IS IDENTICAL, EXCEPT CLKOUT SIGNAL FOR CH1 IS 180° OUT OF PHASE
WITH THE INTERNAL OSCILLATOR AND HAS A FIXED 50% DUTY CYCLE AND CLKOUT SIGNAL FOR CH2 IS IN PHASE WITH THE INTERNAL OSCILLATOR
AND ITS DUTY CYCLE VARIES LINEARLY WITH THE PART’S JUNCTION TEMPERATURE.
Figure 1. Block Diagram
8582f
8
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