lx1670 Microsemi Corporation, lx1670 Datasheet - Page 5

• Manufacturer Part Number: lx1670
• Description: 5 - Bit Programmable Votage Reference
• Manufacturer: Microsemi Corporation

Copyright © 1997
Rev. 1.0
Pin Name
VIDO
V
P
OV
ENABLE
BLKEN
GND
D0
D1
D2
D3
D4
D4B
V
GOOD
SENSE
CC
7/97
OUT
BLKEN
GND
D4B
D0
D1
D2
D3
D4
10
11
13
12
6
8
9
7
Pin #
10
11
12
13
14
1
2
3
4
5
6
7
8
9
BLOCK
< 1.8V
DAC
Description
S
Output reference voltage used by PWM controller to set system voltage.
Connected directly to system output voltage.
Open collector output pulls low when the processor's supply is not good.
SCR Driver goes high when processor supply is over voltage.
TTL compatible chip enable. Internally pulled high.
Enables or disables blocking of codes with voltage blow 1.8V for CPU protection. Internally pulled high.
Analog ground return.
LSB DAC logic control. Internally pulled high.
2nd LSB DAC logic control. Internally pulled high.
3rd LSB DAC logic control. Internally pulled high.
MSB DAC logic control. Internally pulled high.
Scales VIDO output when low. Internally pulled high.
Inverting output of D4.
Analog power supply.
1
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
MUX
2X1
5 - B
VIDO
OUT
1
0
I T
F U N C T I O N A L P I N D E S C R I P T I O N
F U N C T I O N A L P I N D E S C R I P T I O N
F U N C T I O N A L P I N D E S C R I P T I O N
F U N C T I O N A L P I N D E S C R I P T I O N
F U N C T I O N A L P I N D E S C R I P T I O N
P
R O D U C T I O N
P
R O G R A M M A B L E
B L O C K D I A G R A M
2V REF
VE
D
0.935 * VS
V
0.87 * VS
0.93 * VE
A T A
O L T A G E
S
R
H E E T
E F E R E N C E
VS
V
CC
4.67/4.47V
10.6/10.1V
LX1670
14
5
4
3
2
V
ENABLE
OV
P
V
GOOD
CC
SENSE
OUT
5