參數(shù)資料
型號(hào): TPS5211PWP
廠商: Texas Instruments, Inc.
英文描述: HIGH FREQUENCY PROGRAMMABLE HYSTERETIC REGULATOR CONTROLLER
中文描述: 可編程滯高頻穩(wěn)壓控制器
文件頁數(shù): 24/32頁
文件大?。?/td> 469K
代理商: TPS5211PWP
TPS5211
HIGH FREQUENCY PROGRAMMABLE HYSTERETIC
REGULATOR CONTROLLER
SLVS243 – SEPTEMBER 1999
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
using the TPS5211 when both 12 V and 5 V are available
When both 12 V and 5 V are available, several components can be removed from the basic schematic shown
in Figure 18. R1, R4, and C9 are no longer required if 5 V is brought in directly to INHIBIT and LODRV. However,
if undervoltage lockout for the 5-V input is desired, R1 and R4 can be used to set the startup setpoint. The
INHIBIT pin trip level is 2.1 V. Select R4:
(
100
)
×
<<
k
nA
V
100
I
V
R
Max
INH
INH
210
1
4
)
(
Then, set the 5-V UVLO trip level with R1:
(
2
V
)
4
2
5
1
R
V
V
R
Trip
×
=
R1
R4
INHIBIT
LODRV
5 V IN
Figure 21. 5-V Input With UVLO
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