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TPS62273DRV Fiches technique(PDF) 4 Page - Texas Instruments

No de pièce TPS62273DRV
Description  2.25 MHz 400-mA Step Down Converter With Selectable VOUT
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS62273DRV Fiches technique(HTML) 4 Page - Texas Instruments

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PIN ASSIGNMENTS
SW
VSEL
FB
EN
GND
VIN
1
2
3
4
5
6
TopviewDRVpackage
Zero-Pole
AMP.
Integrator
Error Amp.
PFMComparator
PWM
Comp.
VREF
Control
Stage
GateDriver
Anti
Shoot-Through
Current
LimitComparator
Current
LimitComparator
VREF+1%
FB
FB
VIN
GND
2.25MHz
Oscillator
SW1
EN
VIN
Softstart
VOUT RAMP
CONTROL
Thermal
Shutdown
Reference
0.6VVREF
Undervoltage
Lockout1.8V
Limit
HighSide
Limit
LowSide
Sawtooth
Generator
FB
RI1
RI..N
VSEL
GND
InternalVoltage
SettingNetwork
TPS62270, TPS62272
TPS62273
SLVS799C – NOVEMBER 2007 – REVISED JANUARY 2009 ........................................................................................................................................... www.ti.com
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NO.
NAME
(SON)
VIN
5
PWR
VIN power supply pin.
GND
6
PWR
GND supply pin
EN
4
I
This is the enable pin of the device. Pulling this pin to low forces the device into shutdown mode. Pulling this
pin to high enables the device. This pin must be terminated.
SW
1
OUT
This is the switch pin and is connected to the internal MOSFET switches. Connect the inductor to this
terminal
FB
3
I
Feedback Pin for the internal regulation loop. Connect the external resistor divider to this pin. In case of fixed
output voltage option, connect this pin directly to the output capacitor
VSEL
2
I
Voltage Select input. Please refer to table ordering information for available output voltage selections.
FUNCTIONAL BLOCK DIAGRAM
4
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Copyright © 2007–2009, Texas Instruments Incorporated
Product Folder Link(s): TPS62270 TPS62272 TPS62273


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