LTC1699 Series
U
TYPICAL APPLICATIO S
SMBus Programmed CPU Core Voltage Regulator for 2-Step Applications (VIN = 5V) with Burst Mode Operation Disabled
V
IN
5V
100k*
C
IN
C
39pF
150µF
6.3V
×2
OSC
1
16
15
14
13
12
11
10
9
Q1
C
TG
BOOST
SW
OSC
FDS6680A
C
C
B
SS
0.1µF
0.22µF
C
C
: PANASONIC EEFUEOG181R
OUT
IN
2
3
4
5
6
7
8
: PANASONIC EEFUEOJ151R
RUN/SS
INTV
CC
C : TAIYO YUDEN LMK550BJ476MM-B
O
C
C
R
C
L1: COILCRAFT 1705022P-781HC
Q4, Q5: 2N2222
R
220pF
20k
10k 100k
470k
I
TH
: IRC LRF 2512-01-R004-J
SENSE
C
C2
220pF
POWER
GOOD
LTC1735-1
PGOOD
L1
0.78µH
R
SENSE
0.004Ω
D
B
V
1.6V
12A
OUT
Q5
V
IN
MBR0530
Q4
–
SENSE
SENSE
V
INTV
CC
C
OUT
C
+
+
O
180µF
4V
0.1µF
1000pF
4.7µF
47µF
Q2, Q3
FDS6680A
×2
10V
+
BG
×3
1µF
47pF
V
CC
SENSE
MBRD835L
180pF
LTC1699-81
PGND
OSENSE
VRON
FB
SGND
TO
µP
SCL CPU_ON
SDA PGOOD
SEL CLK_ON
IO_ON
V
IN
5V
SGND
EXTV
CC
GND
SGND
1699 TA03
*OPTIONAL TO DEFEAT OVERCURRENT LATCHOFF
18
Linear [ Linear ]
