参数资料
型号: MIC38HC45YM TR
厂商: Micrel Inc
文件页数: 3/8页
文件大小: 0K
描述: IC REG CTRLR BST FLYBK ISO 8SOIC
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 500kHz
占空比: 50%
电源电压: 7.6 V ~ 20 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
其它名称: MIC38HC45YMTR
MIC38HC45YMTR-ND
MIC38HC42/3/4/5
Pin Configuration
COMP 1
NC 2
FB 3
MIC38HC4x-1
14 VREF
13 NC
12 VDD
Micrel, Inc.
MIC38HC4x
NC 4
11 VD
COMP 1
FB 2
ISNS 3
RT/CT 4
8
7
6
5
VREF
VDD
OUT
GND
ISNS 5
NC 6
RT/CT 7
10 OUT
9 AGND
8 PGND
8-Pin DIP (N)
8-Lead SOIC (M)
Pin Description
14-Pin DIP (-1 B N)
14-Lead SOIC (-1 B M)
Pin Number
N, M, MM
1
Pin Number
-1 B N, -1 B M
1
Pin Name
COMP
Pin Function
Compensation: Connect external compensation network to modify the error
amplifier output.
2
NC
Not internally connected.
2
3
FB
Feedback (Input): Error amplifier input. Feedback is 2.5V at desired output
voltage.
4
NC
Not internally connected.
3
5
ISNS
Current Sense (Input): Current sense comparator input. Connect to current
sensing resistor or current transformer.
6
NC
Not internally connected.
4
7
RT/CT
Timing Resistor/Timing Capacitor: Connect external RC network to select
switching frequency.
5
8
9
GND
PGND
AGND
Ground: Combined analog and power ground.
Power Ground: N-channel driver transistor ground.
Analog Ground: Controller circuitry ground.
6
10
11
OUT
VD
Power Output: Totem-pole output.
Power Supply (Input): P-channel driver transistor supply input. Return to
power ground (PGND).
7
12
VDD
Analog Supply (Input): Controller circuitry supply input. Return to analog
ground (AGND).
13
NC
Not internally connected.
8
April 2005
14
VREF
5V Reference (Output): Connect external RC network.
3
M9999-042205
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