参数资料
型号: ISL8009EVAL1Z
厂商: Intersil
文件页数: 9/13页
文件大小: 0K
描述: EVALUATION BOARD FOR ISL8009
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 1.8V
电流 - 输出: 1.5A
输入电压: 2.7 ~ 5.5 V
稳压器拓扑结构: 降压
频率 - 开关: 1.6MHz
板类型: 完全填充
已供物品:
已用 IC / 零件: ISL8009
ISL8009A
Typical Applications
INPUT 2.7V TO 5.5V
L
2.2μH
OUTPUT
1.8V TO 1.5A
C 1
20μF
VIN
ISL8009A
LX
GND
C 2
20μF
R 2
124k
*C 3
220pF
EN
R1
100k
POR
VFB
R 3
100k
SKIP
RSI
*C3 IS OPTIONAL TO IMPROVE
TRANSIENT RESPONSE. CHECK
LOOP BANDWIDTH BEFORE USE.
FIGURE 24. TYPICAL APPLICATION DIAGRAM
Block Diagram
SKIP
SHUTDOWN
SOFT- START
27pF
390k
SHUTDOWN
EN
BANDGAP
0.8V
EAMP
+
OSCILLATOR
VIN
COMP
PWM/PFM
LOGIC
E
VFB
+
SLOP
SLOPE
COMP
CONTROLLER
PROTECTION
DRIVER
+
LX
GND
CSA1
0.864V
+
+
OCP
0.85V
+
0.736V
+
SKIP
0.17V
POR
2ms
DELAY
ZERO - CROSS
SENSING
RSI
0.2V
SCP
+
FIGURE 25. FUNCTIONAL BLOCK DIAGRAM
9
FN6656.3
February 28, 2013
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