参数资料
型号: MC34063SMDBKEVB
厂商: ON Semiconductor
文件页数: 4/15页
文件大小: 0K
描述: EVAL BOARD FOR MC34063SMDBK
设计资源: MC34063SMDBKEVB Gerber Files
MC34063 Demo Brd Schematic
MC34063 BOM
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: 3.3V
电流 - 输出: 100mA
输入电压: 12V
稳压器拓扑结构: 降压
频率 - 开关: 100kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: MC34063
其它名称: MC34063SMDBKEVBOS
MC34063A, MC33063A, SC34063A, SC33063A, NCV33063A
18
180
16
14
12
10
8
V CC = 5.0 V, Pin 7 = V CC
Pin 5 = GND, T A = 25 ° C
ON TIME ( m s)
160
140
120
100
80
6
4
2
OFF TIME ( m s)
FREQUENCY (kHz)
60
40
20
V CC = 5.0 V
Pin 7 = V CC
Pin 2 = GND
Pins 1, 5, 8 = Open
C T = 1.0 nF
T A = 25 ° C
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
5.0
10 m s/DIV
1.8
Ct, TIMING CAPACITOR CAPACITANCE (nF)
Figure 3. Oscillator Frequency
1.1
Figure 4. Timing Capacitor Waveform
1.7
1.6
1.5
1.0
0.9
0.8
0.7
Darlington Connection
1.4
1.3
1.2
1.1
V CC = 5.0 V
Pins 1, 7, 8 = V CC
Pins 3, 5 = GND
T A = 25 ° C
(See Note 7)
0.6
0.5
0.4
0.3
0.2
0.1
V CC = 5.0 V
Pin 7 = V CC
Pins 2, 3, 5 = GND
T A = 25 ° C
(See Note 7)
Forced b = 20
1.0
0
0
0.2
0.4
0.6 0.8 1.0 1.2
1.4
1.6
0
0.2
0.4
0.6 0.8 1.0 1.2
1.4
1.6
400
380
I E , EMITTER CURRENT (A)
Figure 5. Emitter Follower Configuration Output
Saturation Voltage versus Emitter Current
3.6
3.2
I C , COLLECTOR CURRENT(A)
Figure 6. Common Emitter Configuration Output
Switch Saturation Voltage versus
Collector Current
360
340
320
300
280
V CC = 5.0 V
I chg = I dischg
2.8
2.4
2.0
1.6
260
240
220
1.2
0.8
0.4
C T = 1.0 nF
Pin 7 = V CC
Pin 2 = GND
200
-55
-25
0 25 50 75
100
125
0
0
5.0
10
15 20 25 30
35
40
T A , AMBIENT TEMPERATURE ( ° C)
Figure 7. Current Limit Sense Voltage
versus Temperature
V CC , SUPPLY VOLTAGE (V)
Figure 8. Standby Supply Current versus
Supply Voltage
7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
http://onsemi.com
4
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