參數(shù)資料
型號: 73S8009C-20IMR/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): 32/33頁
文件大小: 481K
代理商: 73S8009C-20IMR/F
73S8009C Data Sheet
DS_8009C_025
8
Rev. 1.3
Pin
Name
Pin
(QFN32)
Pin
(QFN20)
Type
Equivalent
Circuit
Description
VBAT
25
N/A
Alternate power source input, typically from
two series cells, V > 4V
VBUS
23
N/A
Alternate power source input from USB
connector or hub.
LIN
27
17
PSI
Connection to 10
H inductor for internal step
up converter. Note: inductor must be rated for
400 mA maximum peak current.
VP
15
9
PSO
Intermediate output of main converter circuit.
Requires an external 4.7
F low ESR filter
capacitor to GND
GND
28,31
18
Ground.
Microcontroller Interface
CS
12
N/A
I
When CS = 1, the control and signal pins are
configured normally. When CS is set low,
CMDVCC%, RSTIN, and CMDVCC#. are
latched. IOUC, AUX1UC, and AUX2UC are
set to high-impedance pull-up mode and do not
pass data to or from the smart card. Signals
RDY and OFF are disabled to prevent a low
output and the internal pull-up resistors are
disconnected.
OFF
32
1
O
Interrupt signal to the processor. Active Low -
Multi-function indicating fault conditions and
card presence. Open drain output configuration
It includes an internal 20kΩ pull-up to V
DD.
Pull-up is disabled in Power down state and CS
= 0 modes.
I/OUC
1
2
IO
System controller data I/O to/from the card.
Includes a pull-up resistor to VDD.
AUX1UC
2
N/A
IO
System controller auxiliary data I/O to/from the
card. Includes a pull-up resistor to VDD.
AUX2UC
3
N/A
IO
System controller auxiliary data I/O to/from the
card. Includes a pull-up resistor to VDD.
CMDVCC%
CMDVCC#
4
5
3
4
I
Logic low on one or both of these pins will
cause the LDO to ramp the Vcc supply to the
smart card and smart card interface to the
value described in the following table
CMDVCC%
CMDVCC# Vcc Output Voltage
0
1.8V
0
1
5.0V
1
0
3.0V
1
LDO Off
Note: See the description of the Card Power
Supply for more detail on the operation of
CMDVCC% and CMDVCC#.
相關PDF資料
PDF描述
73S8009C-20IM/F 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC20
73S8009C-32IM/F POWER SUPPLY SUPPORT CKT, QCC32
73S8009C-32IMR/F POWER SUPPLY SUPPORT CKT, QCC32
73S8009R-ILR SPECIALTY ANALOG CIRCUIT, PDSO28
73S8009R-IMR SPECIALTY ANALOG CIRCUIT, QCC20
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