參數(shù)資料
型號: X4165V8-2.7
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8
封裝: PLASTIC, TSSOP-8
文件頁數(shù): 17/22頁
文件大?。?/td> 496K
代理商: X4165V8-2.7
X4163/5
Characteristics subject to change without notice.
4 of 22
REV 1.32 5/27/04
www.xicor.com
Setting the VTRIP Voltage
This procedure is used to set the VTRIP to a higher or
lower voltage value. It is necessary to reset the trip
point before setting the new value.
To set the new VTRIP voltage, start by setting the WEL
bit in the control register, then apply the desired VTRIP
threshold voltage to the VCC pin and the programming
voltage, VP, to the WP pin and 2 byte address and 1
byte of “00” data. The stop bit following a valid write
operation initiates the VTRIP programming sequence.
Bring WP LOW to complete the operation.
Resetting the VTRIP Voltage
This procedure is used to set the VTRIP to a “native”
voltage level. For example, if the current VTRIP is 4.4V
and the new VTRIP must be 4.0V, then the VTRIP must
be reset. When VTRIP is reset, the new VTRIP is some-
thing less than 1.7V. This procedure must be used to
set the voltage to a lower value.
To reset the new VTRIP voltage start by setting the WEL
bit in the control register, apply VCC and the program-
ming voltage, VP, to the WP pin and 2 byte address
and 1 byte of “00” data. The stop bit of a valid write
operation initiates the VTRIP programming sequence.
Bring WP LOW to complete the operation.
Figure 2. Reset VTRIP Level Sequence (VCC > 3V. WP = 12–15V, WEL bit set)
Figure 3. Sample VTRIP Reset Circuit
012 345 67
SCL
SDA
A0h
012 345 67
00h
WP
VP = 12-15V
012 345 67
03h
012 345 6 7
00h
1
2
3
4
8
7
6
5
X4163
VTRIP
Adj.
VP
RESET
4.7K
SDA
SCL
C
Adjust
Run
SOIC
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