SMM465
Preliminary Information
Pin
Pin
Pin Name
Pin Description
Number Type
Voltage reference input used for DC output control and margining.
14
15
I/O
VREF_CNTL
VREF_CNTL can be programmed to output the internal 1.25V reference.
External capacitor input used to filter VMX inputs
Positive converter sense line, VMA through VMD
CAP
IN
FILT_CAP
VMX
41,36,
31,26
42,37,
32,27
External capacitor input used to filter the VMX inputs to the 10-bit ADC, CAPA
CAP
OUT
OUT
CAP
CAPX
through CAPD. This provides an RC filter where R = 25kΩ.
43,38,
Programmable active high/low open drain converter enable output, PUPA
PUPX
33,28
through PUPD
44,39,
34,29
Output voltage used to control the output of DC/DC converters, TRIMA
through TRIMD
TRIMX
45,40,
External sample and hold capacitor input used to set the voltage on the
TRIM_CAPX
35,30
TRIM pins, TRIM_CAPA through TRIM_CAPD
46
47
48
Power supply of the part
PWR
PWR
CAP
VDD
12V power supply input internally regulated to either 3.6V or 5.5V
External capacitor input used to filter the internal supply
12VIN
VDD_CAP
16, 17,
18, 20,
21, 22,
23, 25
Leave open, do not connect.
NC
No Connect
Summit Microelectronics, Inc
2085 1.1 05/27/04
5
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
