参数资料
| 型号： | ZL6105ALAFTR5546 |
| 厂商： | Intersil |
| 文件页数： | 26/35页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 36-QFN |
| 标准包装： | 100 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1.4MHz |
| 占空比： | 95% |
| 电源电压： | 3 V ~ 14 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 36-VFQFN 裸露焊盘 |
| 包装： | 托盘 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页
ZL6105
address so the host can distinguish between the devices. The
device address can be set according to the pin-strap options
TABLE 23. SMBus ADDRESS INDEX VALUES
listed in Table 21. Address values are right-justified.
TABLE 21. SMBus ADDRESS PIN-STRAP SELECTION
SA0
R SA
(k Ω )
10
SA0 OR SA1
INDEX
0
R SA
(k Ω )
34.8
SA0 OR SA1
INDEX
13
LOW
LOW
0x20
OPEN
0x21
HIGH
0x22
11
12.1
13.3
1
2
3
38.3
42.2
46.4
14
15
16
SA1
OPEN
HIGH
0x23
0x26
0x24
0x27
0x25
Reserved
14.7
16.2
4
5
51.1
56.2
17
18
If additional device addresses are required, a resistor can be
connected to the SA0 pin according to Table 22 to provide up to
25 unique device addresses. In this case, the SA1 pin should be
tied to SGND.
TABLE 22. SMBus ADDRESS RESISTOR SELECTION
17.8
19.6
21.5
23.7
26.1
6
7
8
9
10
61.9
68.1
75
82.5
90.9
19
20
21
22
23
R SA0
(k Ω )
SMBus
ADDRESS
R SA0
(k Ω )
SMBus
ADDRESS
28.7
31.6
11
12
100
24
10
11
12.1
13.3
14.7
16.2
17.8
19.6
21.5
23.7
26.1
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
34.8
38.3
42.2
46.4
51.1
56.2
61.9
68.1
75
82.5
90.9
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
Using this method, the user can theoretically configure up to 625
unique SMBus addresses, however the SMBus is inherently
limited to 128 devices so attempting to configure an address
higher than 128 (0x80) will cause the device address to repeat
(i.e., attempting to configure a device address of 129 (0x81)
would result in a device address of 1). Therefore, the user should
use index values 0 to 4 on the SA1 pin and the full range of index
values on the SA0 pin, which will provide 125 device address
combinations.
To determine the SA0 and SA1 resistor values given an SMBus
address (in decimal), follow the indicated steps to calculate an
index value and then use Table 23 to select the resistor that
corresponds to the calculated index value as follows:
1. Calculate SA1 Index:
28.7
0x0B
100
0x18
SA1 index = Address (in decimal) ÷ 25
(EQ. 34)
31.6
0x0C
2. Round the result down to the nearest whole number.
(EQ. 33)
If more than 25 unique device addresses are required or if other
SMBus address values are desired, both the SA0 and SA1 pins
can be configured with a resistor to SGND according to Equation
SMBus address = 25 x (SA1 index) + (SA0 index)
(in decimal)
Note that the SMBus address 0x4B is reserved for device test and
cannot be used in the system.
3. Select the value of R1 from Table 23 using the SA1 Index
rounded value from Step 2.
4. Calculate SA0 Index:
SA0 index = Address - (25 x SAl Index) (EQ. 35)
5. Select the value of R0 from Table 23 using the SA0 Index
value from step 4.
Digital-DC Bus
The Digital-DC Communications (DDC) bus is used to
communicate between Zilker Labs Digital-DC devices. This
dedicated bus provides the communication channel between
devices for features such as sequencing, fault spreading, and
current sharing. The DDC pin on all Digital-DC devices in an
application should be connected together. A pull-up resistor is
required on the DDC bus in order to guarantee the rise time as
follows:
26
Risetime = R PU ? C LOAD ≈ 1 μ s
(EQ. 36)
FN6906.5
December 19, 2013
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