LTC1699 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1699' PDF : 20 Pages View PDF
LTC1699 Series
TYPICAL APPLICATIO S
SMBus Programmed CPU Core Voltage Regulator for 2-Step Applications (VIN = 5V) with Burst Mode Operation Disabled
VIN
5V
100k*
COSC 39pF
CIN
150µF
INTVCC
POWER
GOOD
10k
Q5
100k
470k
CSS
0.1µF
RC
CC
220pF
20k
CC2
220pF
1
COSC
16
TG
2
15
RUN/SS BOOST
3
ITH
14
SW
LTC1735-1
4
PGOOD
13
VIN
CB
0.22µF
Q1
FDS6680A
DB
MBR0530
L1
0.78µH
6.3V
×2
COUT: PANASONIC EEFUEOG181R
CIN: PANASONIC EEFUEOJ151R
CO: TAIYO YUDEN LMK550BJ476MM-B
L1: COILCRAFT 1705022P-781HC
Q4, Q5: 2N2222
RSENSE: IRC LRF 2512-01-R004-J
RSENSE
0.004Ω
VOUT
1.6V
Q4
12A
0.1µF
1000pF
5 SENSE–
6 SENSE+
12
INTVCC
11
BG
+
4.7µF
Q2, Q3
FDS6680A
+ COUT
180µF
4V
×3
CO
47µF
10V
VCC SENSE
47pF
LTC1699-81
180pF
1µF
7
VOSENSE
10
PGND
×2
MBRD835L
VRON FB
SGND
TO SCL CPU_ON
µP SDA PGOOD
SEL CLK_ON
8
SGND
9
EXTVCC
VIN
5V
IO_ON
GND
SGND
*OPTIONAL TO DEFEAT OVERCURRENT LATCHOFF
1699 TA03
18
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