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4TPB470M 데이터시트(PDF) 10 Page - Texas Instruments

부품명 4TPB470M
상세설명  DUAL-OUTPUT, LOW DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
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홈페이지  http://www.ti.com
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4TPB470M 데이터시트(HTML) 10 Page - Texas Instruments

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background image
t
t
PG2
Output
VIN2
t
VIT+
(seeNoteA)
VOUT2
V
(seeNoteA)
Threshold
Voltage
IT-
NOTEA:
V
tripvoltageistypically5%lowerthantheoutputvoltage(95%V ).V
toV
isthehysteresisvoltage.
IT
IT
-
-
O
IT+
TPS70445, TPS70448
TPS70451, TPS70458
TPS70402
SLVS307F – SEPTEMBER 2000 – REVISED APRIL 2010
www.ti.com
PG2 Timing Diagram (assuming VIN1 already powered up)
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
EN1
6
I
Active low enable for VOUT1
EN2
7
I
Active low enable for VOUT2
GND
9
Ground
GND/HEATSI
1, 12, 13, 24
Ground/heatsink
NK
MR
5
I
Manual reset input, active low, pulled up internally
NC
4, 17, 20
No connection
PG1
19
O
Open drain output, low when VOUT1 voltage is less than 95% of the nominal regulated voltage
PG2
18
O
Open drain output, low when VOUT2 voltage is less than 95% of the nominal regulated voltage
RESET
8
O
Open drain output, SVS (power-on reset) signal, active low
VIN1
2, 3
I
Input voltage of regulator 1
VIN2
10, 11
I
Input voltage of regulator 2
VOUT1
22, 23
O
Output voltage of regulator 1
VOUT2
14, 15
O
Output voltage of regulator 2
VSENSE1/FB1
21
I
Regulator 1 output voltage sense/regulator 1 feedback for adjustable
VSENSE2/FB2
16
I
Regulator 2 output voltage sense/regulator 2 feedback for adjustable
10
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