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TPS70448PWP Datasheet(PDF) 6 Page - Texas Instruments

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No. de pieza TPS70448PWP
Descripción Electrónicos  DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
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TPS70448PWP Datasheet(HTML) 6 Page - Texas Instruments

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TPS70445, TPS70448, TPS70451, TPS70458, TPS70402
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED SVS FOR SPLIT VOLTAGE SYSTEMS
SLVS307B – SEPTEMBER 2000 – REVISED APRIL 2003
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PG2 timing diagram (assuming VIN1 already powered up)
NOTES: A. VIT –Trip voltage is typically 5% lower than the output voltage (95%VO) VIT– to VIT+ is the hysteresis voltage.
t
t
PG2
Output
VIN2
t
VIT+
(see Note A)
VOUT2
VIT –
(see Note A)
Threshold
Voltage
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
EN1
6
I
Active low enable for VOUT1
EN2
7
I
Active low enable for VOUT2
GND
9
Ground
GND/HEATSINK
1, 12, 13, 24
Ground/heatsink
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


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