参数资料
型号: BD9011EKN-E2
厂商: Rohm Semiconductor
文件页数: 24/30页
文件大小: 0K
描述: IC REG CTRLR BST PWM 36-HQFN
标准包装: 1
PWM 型: 控制器
输出数: 2
频率 - 最大: 550kHz
电源电压: 3.9 V ~ 30 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 105°C
封装/外壳: 36-TQFN 裸露焊盘
包装: 标准包装
产品目录页面: 1372 (CN2011-ZH PDF)
其它名称: BD9011EKN-E2DKR
4)Setting the Time for Short Circuit Protection
The time (tscp) from output short to latch activation is determined by the capacitor, Cscp, connected SCP pin.
tscp = 7.96 × 10 × Cscp
5
[sec]
( typ. )
Short SCP to GND if SCP function is not being used.
SCP
Without SCP
5)Single Channel Operation
This device can be used as a single output.
DTC,FB,CTL,CL
VS,PVCC
INV
The connection is as follows;
Short to GND
Short to VCC
Short to VREF
DTC
FB
CTL
CL
VCC
VS
PVCC
VREF
INV
Single Channel Operation
6)Setting the Oscillating Frequency
The oscillating frequency can be set by selecting the timing resistor (RRT)and the timing capacitor (CCT).
1000
Ocsillating Frequency vs. Timing Capacitance (CCT)
C CT =100pF
C CT =470pF
1000
Ocsillating Frequency vs. Timing Capacitance (RRT)
R RT =5.1k Ω
100
100
R RT =27k Ω
10
C CT =1000p F
10
R RT =100k Ω
10
100
1000
100
1000
10000
Timing Resistance (kΩ)
Fig.3
24/29
Timing Capacitance(pF)
Fig.4
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