ADP3421JRU Analog Devices, ADP3421JRU Datasheet - Page 12

• Manufacturer Part Number: ADP3421JRU
• Description: Geyserville-Enabled DC-DC Converter Controller for Mobile CPUs
• Manufacturer: Analog Devices

ADP3421
Revision History
Location
5/02—Data Sheet changed from REV. 0 to REV. A.
Changed Figures to TPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Renumbered Figure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
TYPICAL APPLICATION–GEYSERVILLE-ENABLED MOBILE VRM CONVERTER
2N3906
Q1
MJD210
C20
10 F
Q2
10k
FROM
CPU
R10
VRON
100nF
C2
C3
68 F
C14
100 F
51.1k
160k
R1
R2
10
11
12
13
14
1
2
3
4
5
6
7
8
9
VHYS
CLSET
LTO
LTI
LTB
VID4
VID3
VID2
VID1
VID0
CLKDRV
CLKFB
IODRV
IOFB
ADP3421
U1
DACOUT 21
PWRGD 16
RAMP 25
CORE 20
UVLO 17
REG 26
GND 22
VCC 24
OUT 23
SSC 19
CS– 28
CS+ 27
SSL 18
SD 15
3.3V
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE
ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE
FOR USE IN DESIGN
C1
100nF
28-Lead Thin Shrink Small Outline Package (TSSOP)
C22
1nF
C31
R11
220 k
0.15 (0.006)
0.05 (0.002)
SEATING
PIN 1
PLANE
1pF
C21
1.5nF
470 k
C41
1pF
3.3 k
28
R21, 10 k
R12
R16
1
C29
100pF
0.65 (0.026)
Dimensions shown in mm and (inches).
C25
BSC
OUTLINE DIMENSIONS
7.5 k
9.80 (0.386)
9.60 (0.378)
R6
R17
75 k
22nF
576
C23
1nF
R18
0.30 (0.012)
0.19 (0.008)
332
R19
2 k
10 k
R15
R5
(RU-28)
100 k
1.10 (0.043)
14
R22
15
10pF
C18
MAX
0.20 (0.008)
0.09 (0.004)
4.50 (0.177)
4.30 (0.169)
1
2
3
4
5
6
7
6.50 (0.256)
6.25 (0.246)
OVPSET
SD
GND
IN
DRVLSD
DLY
VCCGD
8
0
ADP3410
U2
SRMON
PGND
DRVH
DRVL
BST
VCC
0.70 (0.028)
0.50 (0.020)
SW
10 F
14
13
12
11
10
C28
9
8
5V
D2
10BQ040
C17
100nF
2.2
IRF7811
R8
M2
10 F
M1
IRF7811
C10
IRF7811
R9
2.2
M3
10 F
C15
D1
10BQ040
10 F
1 H
C16
L1
VCC ON CORE SENSE
VIN
VCC CPU CLK
220 F
C11, C12,
C26, C27
VCC CPU IO
15nF
5m
C32
R
C4–C6,
CS
V GATE
7
R20
10
CORE
GND
Page
VCC
CPU