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TPS61141 датащи(PDF) 2 Page - Texas Instruments

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номер детали TPS61141
подробное описание детали  DUAL OUTPUT BOOST REGULATOR USING SINGLE INDUCTOR
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS61141 датащи(HTML) 2 Page - Texas Instruments

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DEVICE INFORMATION
1
2
3
4
5
10
9
8
7
6
Vout
VFB
SELV
SELI
Vin
IFB
Iset
GND
Iout
SW
10 pin 3*3 mm QFN PACKAGE
(TOP VIEW)
Exposed
Thermal
Pad
TPS61140
TPS61141
SLVS624B – JANUARY 2006 – REVISED MARCH 2007
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ORDERING INFORMATION
OVP
PACKAGE
TA
PACKAGE(1)
(typ)
MARKING
–40 to 85
°C
TPS61140DRCR
28 V
BCP
–40 to 85
°C
TPS61141DRCR
22 V
BRG
–40 to 85
°C
TPS61140DRCT
28 V
BCP
–40 to 85
°C
TPS61141DRCT
22 V
BRG
(1)
For the most current package and ordering information, see the Package Option Addendum at the end
of this document, or see the TI Web site at www.ti.com.
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
The input pin to the IC. It provides the current to the boost regulator output, and also powers the IC circuit.
VIN
5
I
When the Vin voltage is below the undervoltage lockout threshold, the IC turns off and disables outputs.
GND
8
O
The ground of the IC. Connect the input and output capacitors very close to this pin.
SW
6
I
This is the switching node of the IC where the PWM switching Is created.
IOUT
7
O
The output of the constant current supply. It is directly connected to the boost regulator output.
The output of the voltage regulator. There is a low dropout linear regulator (LDO) between the Iout and Vout
VOUT
1
O
pins which regulates the Vout voltage. Turning off the LDO disconnects the Vout from Iout.
The voltage feedback pin for Vout regulation. It is regulated to an internal reference voltage. An external voltage
VFB
2
I
divider connected to this pin programs the output voltage.
The return path for the Iout regulation. The current regulator is connected to this pin, and it can be disabled by
IFB
10
I
opening the current path.
The current output programming pin. The resistor connected to the pin programs the regulated current of the
ISET
9
I
Iout pin.
SELI,
4, 3
I
Mode selection pins. See Table 1 for details.
SELV
The thermal pad should be soldered to the analog ground. If possible, use thermal via to connect to ground
Thermal Pad
plane for ideal power dissipation.
2
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