参数资料
型号: TPIC9201N
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP20
封装: ROHS COMPLIANT, PLASTIC, DIP-20
文件页数: 18/18页
文件大小: 434K
代理商: TPIC9201N
www.ti.com
Timing Requirements
Reset Delay (RDELAY)
MICROCONTROLLER POWER SUPPLY
AND MULTIPLE LOW-SIDE DRIVER
SLIS115D – APRIL 2005 – REVISED FEBRUARY 2008
TA = –40°C to 125°C, VIN = 7 V to 18 V (unless otherwise noted)
MIN
TYP
MAX
UNIT
fSPI
SPI frequency
4
MHz
T1
Delay time, NCS falling edge to SCLK rising edge
10
ns
T2
Delay time, NCS falling edge to SCLK falling edge
80
ns
T3
Pulse duration, SCLK high
60
ns
T4
Pulse duration, SCLK low
60
ns
T5
Delay time, last SCLK falling edge to NCS rising edge
80
ns
T6
Setup time, MOSI valid before SCLK edge
10
ns
T7
Hold time, MOSI valid after SCLK edge
10
ns
T8
Time between two words for transmitting
170
ns
The RDELAY output provides a constant current source to charge an external capacitor to approximately 6.5 V.
The external capacitor is selected to provide a delay time, based on the current equation for a capacitor,
I = C(
Δv/Δt) and a 28-
A typical output current.
Therefore, the user should select a 47-nF capacitor to provide a 6-ms delay at 3.55 V.
I = C(
Δv/Δt)
28
A = C × (3.55 V/6 ms)
C = 47 nF
Copyright 2005–2008, Texas Instruments Incorporated
9
Product Folder Link(s): TPIC9201
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