参数资料
型号: MC34708VM
厂商: Freescale Semiconductor
文件页数: 60/159页
文件大小: 0K
描述: IC POWER MANAGEMENT 206MAPBGA
标准包装: 160
应用: 通用
电源电压: 1.8 V ~ 4.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 206-LFBGA
供应商设备封装: 206-MAPBGA(13x13)
包装: 托盘
Functional Block Description
7.5.4.7
SW5
SW5 is fully integrated synchronous Buck PWM voltage mode control DC/DC regulator.
BP
C INSW5
SW5IN
I SENSE
SW5MODE
SW5
L SW5
C OSW5
SW5LX
D SW5
GNDSW5
Driver
Internal
Compensation
Controller
Z2
SPI
SW5FAULT
SPI
Interface
SW5FB
Z1
EA
DAC
V REF
Figure 15. SW5 Block Diagram
The peak current is sensed internally for over-current protection purposes. If an over-current condition is detected the regulator
will limit the current through cycle by cycle operation and alert the system through the SW5FAULT SPI bit and issue an SCPI
interrupt via the INT pin.
SW5 can be programmed in step sizes of 25 mV as shown in Table 47 . If the software wants to change the output voltage, after
power up the regulator should be forced into PWM mode to change the voltage.
Table 47. SW5 Output Voltage Programmability
Set Point SW5[4:0]
SW5
Output (V)
Set Point
SW5[4:0]
SW5
Output (V)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
1.2000
1.2250
1.2500
1.2750
1.3000
1.3250
1.3500
1.3750
1.4000
1.4250
1.4500
1.4750
1.5000
1.5250
1.5500
1.5750
16
17
18
19
20
21
22
23
24
25
26
-
-
-
-
-
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
-
-
-
-
-
1.6000
1.6250
1.6500
1.6750
1.7000
1.7250
1.7500
1.7750
1.8000
1.8250
1.8500
-
-
-
-
-
MC34708
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
60
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