參數(shù)資料
型號: 73S8009C-20IM/F
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC20
封裝: ROHS COMPLIANT, QFN-20
文件頁數(shù): 9/33頁
文件大?。?/td> 481K
代理商: 73S8009C-20IM/F
DS_8009C_025
73S8009C Data Sheet
Rev. 1.3
17
CLKIN_from_uC
C1
0.47
F,
OFF_ACK_from_uC
OFF_interrupt_to_uC
CLK track should be routed
far from RST, I/O, C4 and C8
NOTES:
1) VBUS = 4.5V to 5.5V DC.
2) VPC = 2.7V to 6.5V DC (should only be used when VBAT and
VBUS are unused)
3) VBAT = 4.0V to 6.5V DC.
4) Internal pull-up allows it to be left open if unused.
I/OUC_to/from_uC
Card detection
switch is
normally closed
VDD
AUX1UC_to/from_uC
AUX2UC_to/from_uC
RSTIN_from_uC
Low ESR (<100mohms)
should be placed near the
SC connecter contact
CS_from_uC
CMDVCC%_from_uC
R2
20K
Smart Card Connector
1
2
3
4
5
6
7
8
9
10
V
CC
RS
T
CLK
C4
G
ND
VPP
I/O
C8
SW
-1
SW
-2
See
NOTE 4
CMDVCC#_from_uC
RDY_status_to_uC
C3
See NOTE 2
OFF_REQ_to_uC
0
C2
4.7
F
C4
27pF
C5
27pF
See
NOTE 5
5) Resistor footpring is included in case some filtering is needed on CLK
VPC
12
10
11
13
15
16
14
32 QFN
73S80009C
1
2
3
4
5
6
7
8
CS
T
EST
1
GND
VPC
CLKIN
AUX2
RDY
PR
ES
PR
ES
I/O
AUX1
VBUS
CLK
RST
VCC
T
EST
2
CMDVCC%
RSTIN
V
DD
G
ND
OFF
AUX2UC
AUX1UC
I/OUC
CMDVCC#
VP
OFF_
A
C
K
OFF_
R
E
Q
ON/OFF
VBAT
LI
N
G
ND
17
18
19
20
21
23
24
22
9
28
27
25
26
32
31
29
30
VBAT
10
F
10
H
VDD
VBUS
Pushbutton Switch
SW1
See NOTE 3
See NOTE 1
VDD
_supply_to_uC
See
NOTE 6
See
NOTE 6
6) Capacitors C4 and C5 are provisional and their footprints should be
added for added noise rejection if necessary.
7) Inductor must be rated for 400 mA maximum peak current.
See NOTE 7
8) VDD - 3.3V, +/- 0.3V, 40mA max. Requires min two 0.1
F caps to gnd)
See NOTE 8
Figure 4: Typical 73S8009C Application Schematic
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