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參數(shù)資料
| 型號： | SMM105NNR04 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | Single-Channel Supply Voltage Marginer and Active DC Output Controller |
| 中文描述： | 單通道供電電壓Marginer和有源直流輸出控制器 |
| 文件頁數(shù)： | 10/21頁 |
| 文件大小： | 384K |
| 代理商： | SMM105NNR04 |
SMM105
Preliminary Information
Summit Microelectronics, Inc
2068 1.8 09/20/05
10
VOUT
C1
1uF
Vdd
The SMM105 and the DC-DC Converter
Can Operate with either 12V or VDD
If 12V is used, VDD can be left floating
If VDD is used, 12V can be left floating
R1
10K
C7
If the SMM105 internal VREF
is used, the VREF_CNTL pin
becomes an output
Vdd
J1
1
3
5
7
9
2
4
6
8
10
Gnd
Gnd3
Rsrv5
+10V
+5V
SCL
SDA
MR
Rsrv8
Rsrv10
U4
LM4121
1
2
3
4
5
Ref
G
EN
VIn
VOut
DC-DC ENABLE
C3
0.01uF
C8
t
RT2
~10K
R9
10K
C2
0.1uF
C6
FAULT#
C5
0.02uF
J1
Ext VRef
R2
10K
t
R
~
C9
0
READY
C10
0.01uF
VDD (+2.7V to +5.5V)
D1
DIODE
START
SMX3200 I2C Programming
Connector 10 pin Header
C4
0.1uF
U1
SMM105
1
2
3
5
4
6
7
8
9
10
11
12
1
14
19
1
1
1
18
20
2
2
2
2
2
2
2
28
SCL
SDA
A2
START
READY
FAULT#
A1
A0
G
WP#
V
FILT_CAP
COMP2
N
VM
N
N
N
TRIM_CAP
COMP1
TRIM
V
1
V
N
N
N
N
J2
Supply
+12VIN (+10V to +15V)
R8
10K
U2
DC-DC Converter
1
2
4
3
5
6
7
8
9
10
11
+Vout
+Vout
+Vout
Sense
G
G
+Vin
+Vin
Enable
+Vin
Trim
Figure 6 – SMM105 Applications schematic. The accuracy of the external (U4) or internal reference sets the
accuracy of the ADOC function. Total accuracy with a ±0.1% external reference is ±0.2% and ±0.5% with the
internal reference. The 12V supply can go as low as 8V if the internal regulator is set to 3.6V.
APPLICATIONS INFORMATION (CONTINUED)
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