sc900imltrt Semtech Corporation, sc900imltrt Datasheet - Page 13

• Manufacturer Part Number: sc900imltrt
• Description: Sc900 Programmable Penta Uldo With Reset And I2c Interface
• Manufacturer: Semtech Corporation

Output Voltage Code Bits:
A 5-bit linear DAC controls the output voltage of each LDO. The DAC and error-amp gain are scaled so that the LSB
size at the output is 50mV. Output voltage can be set by writing the proper code to the desired LDO register. See
Table A for the bitcodes and their corresponding voltages.
Using the I
The SC900 is a read-write slave-mode I
January 2000. The SC900 has six user-accessible internal 8-bit registers. The I
program flexibility, in that once the slave address has been sent to the SC900 enabling it to be a slave transmitter/
receiver, any register can be written or read from independent of each other. While there is no auto increment/
decrement capability in the SC900 I
register independent of which register you begin accessing. The start and stop commands frame the data-packet
and the repeat start condition is allowed if necessary.
SC900 Limitations to the I
Seven-bit addressing is required for communicating with the SC900; ten-bit addressing is not allowed. Any general
call address will be ignored by the SC900. Note that the SC900 is not CBUS compatible. Finally, the SC900 can
operate in standard mode (100kbit/s) or fast mode (400kbit/s).
POWER MANAGEMENT
Applications Information (Cont.)
2005 Semtech Corp.
2
C Interface
B
t i
0
0
0
0
0
-
-
1
1
4
2
B
C Specifications
t i
0
0
0
0
0
-
-
1
1
3
Table A - LDO Output Voltage Control Settings
2
C logic, a tight software loop can be designed to randomly access the next
B
t i
0
0
0
0
1
-
-
1
1
2
2
C device and complies with the Philips I
B
t i
0
0
0
1
1
-
-
1
1
1
13
B
t i
0
0
0
0
1
1
-
-
1
0
L
D
O
O
2
u
C interface has been designed for
1
1
1
1
1
2
3
p t
9 .
0 .
4 .
5 .
5 .
6 .
6 .
-
-
2
t u
5
0
5
0
5
5
0
C standard Version 2.1 dated
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SC900