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LTC1699EMS8-81#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC1699 Series
7
FU CTIO AL BLOCK DIAGRA
UU
W
MUX/DECODER
SETUP
READ-
BACK
R1*
LTC1699-80, R1 = 10k
LTC1699-81, R1 = 20k
LTC1699-82, R1 = 10k
*
GND
FB
SENSE
SEL
5
R2
5
V
CC
SDA
SCL
5
3
LATCH
CONTROL
SMBON
DCON
1699 FBD
2.5µA
PGOOD
VRON
CPU_ON
IO_ON
CLK_ON
55
COMMAND
LATCH
AND
DECODER
REGISTER
CONTROL
LOGIC
ON
OFF
ON/OFF
STATE
MACHINE
50µs
TIMER
CONVERTER
CONTROL
LOGIC
REGISTER 0REGISTER 1
POWER-ON
RESET
SMBus
INTERFACE
TEST CIRCUIT
–
+
CPU_ON OR
IO_ON OR
CLK_ON OR
PGOOD
FB
SENSE
VRON
GND
1699 F01
SEL
SDA
SCL
V
CC
VRON
SEL
SDA
SCL
10k
S1
5V
5V
0.1µF
S2
0.8V
100pF
Figure 1. Load for Timing Tests
LTC1699 Series
8
TI I G DIAGRA S
WUW
SLAVE
ADDRESS
COMMAND CODE
DATA LOW
DATA HIGH
1
1
SCL
SDA 11 1 XXXXX XXX XXX
R/W
ACK
VID4
VID3
VID0
VID2
VID1
C7
C6
C5
000
23456789 10111213141516171819202122232425262728293031323334353637
PS
R/W
ACK
VID4
VID3
VID0
VID2
VID1
ACK
VID4
VID3
VID0
VID1
VID2
ACK
ACK
SLAVE
ADDRESS
SLAVE
ADDRESS
COMMAND CODE
DATA LOW
DATA HIGH
1
1
SCL
SDA
NOTE 1: S = START CONDITION, P = STOP CONDITION
NOTE 2: C7, C6, C5 = 001 FOR SETUP, 010 FOR READ-BACK, 000 FOR ON AND 011 FOR OFF
1699 TD01
11 1 XXXXX
ACK
C7
C6
C5
000 1 1
RD
11000 00
23456789 101112131415161718
SMBus WRITE WORD PROTOCOL, WITH SMBus ADDRESS = 1110001B,
COMMAND BYTE = 001X XXXB, DATA LOW = 0100 1XXXB, DATA HIGH = 0101 1XXXB
SMBus READ WORD PROTOCOL, WITH SMBus ADDRESS = 1110001B,
COMMAND BYTE = 010X XXXB, DATA LOW = 0100 1000B, DATA HIGH = 0101 1000B
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
PS
ACK
S
VID4
VID3
VID0
VID1
VID2
ACK
DCON
00
DCON
ACK
Operating Sequences
LTC1699 Series
9
TI I G DIAGRA S
WUW
t
BUF
t
LOW
t
HIGH
t
r
t
f
t
HD:STA
t
HD:DAT
SDA
SCL
t
SU:DAT
t
SU:STA
t
SU:STO
STOP
1699 TD02
START
STARTSTOP
t
HD:STA
1699 TD03
t
PH
t
SPL
t
VL
t
SSH
t
PL
t
PPL
t
VPL
t
PGL
t
VH
t
SSL
90%
10%
NOTE: TIMING RELATIVE TO THE STOP BIT (P) IS MEASURED FROM THE RISING EDGE OF SDA
SEE TABLE 1 FOR V
MIN
AND V
MAX
SENSE VOLTAGES
t
PGL
t
PGL
SCL
P
STOP
2nd ON
PROTOCOL
2nd OFF
PROTOCOL
SMBON
DCON
VRON
CPU_ON
IO_ON
CLK_ON
V
SENSE
(V
REF
= 0.8V)
SEL
SDA
PGOOD
P
1.3V
1.3V
1.3V
1.3V
0.7V
V
MAX
V
MIN
0V 0V
Timing for SMBus Interface
CLK_ON, IO_ON, CLK_ON, PGOOD TIMING
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC1699EMS8-81#TRPBF

Mfr. #:
Buy LTC1699EMS8-81#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Power Management Specialized - PMIC SMBus VID V Progmers
Lifecycle:
New from this manufacturer.
Delivery:
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