參數(shù)資料
型號: TPS55010RTET
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, PQCC16
封裝: 3 X 3 MM, GREEN, PLASTIC, WQFN-16
文件頁數(shù): 2/40頁
文件大?。?/td> 1417K
代理商: TPS55010RTET
SEC
PRI
OUT
fd
PRI
N
V
= V
×
- V
N
PH
VIN
GND
VSENSE
TPS55010
RHS
RLS
C
PRI
Npri:Nsec
C
O
V
O
V
PRI
VFD
0.829V
-
+
EN
V
ENA
I1
Ihys
VIN
TPS55010
R
UVLO2
R
UVLO1
ENfalling
START
STOP
ENrising
UVLO1
ENfalling
HYS
ENrising
V
- V
V
R
=
V
I1 × 1-
+ I
V
÷
÷
÷
÷
÷
÷
÷
è
÷
÷
÷
÷
÷÷
è
SLVSAV0A
– APRIL 2011 – REVISED JUNE 2011
(2)
spacer
Figure 19. Setting the Output Voltage
Enable and Adjusting Undervoltage Lockout
The TPS55010 is disabled when the VIN pin voltage falls below 2.6 V. If an application requires a higher
undervoltage lockout (UVLO), use the EN pin as shown in Figure 20 to adjust the input voltage UVLO by using
two external resistors. The EN pin has an internal pull-up current source of 1.2
A that provides the default
condition of the TPS55010 operating when the EN pin floats. Once the EN pin voltage exceeds 1.25 V, an
additional 3.4
A of hysteresis is added. When the EN pin is pulled below 1.18 V, the hysteresis current is
removed.
Figure 20. Adjustable Under Voltage Lock Out
(3)
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10
Copyright
2011, Texas Instruments Incorporated
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