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TPS62260 Fiches technique(PDF) 4 Page - Texas Instruments

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No de pièce TPS62260
Description  2.25 MHz 600 mA Step Down Converter in 2x2SON/TSOT-23 Package
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS62260 Fiches technique(HTML) 4 Page - Texas Instruments

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PIN ASSIGNMENTS
V
IN
GND
EN
SW
FB
1
2
3
5
4
DDCPACKAGE
(TOP VIEW)
DRV PACKAGE
(TOPVIEW)
MODE
FB
GND
SW
EN
VIN
1
2
3
6
5
4
r
Po
w
e
P
A
D
FUNCTIONAL BLOCK DIAGRAM
Zero-Pole
AMP.
Integrator
Error Amp .
PFMComp.
+1% Voltagepositioning
PWM
Comp.
VREF
Control
Stage
GateDriver
Anti
Shoot-Through
Current
LimitComparator
Current
LimitComparator
VREF +1%
FB
FB
VIN
GND
MODE
2.25 MHz
Oscillator
SW1
EN
VIN
Softstart
VOUT RAMP
CONTROL
Thermal
Shutdown
Reference
0.6VVREF
Undervoltage
Lockout 1.8V
Limit
HighSide
Limit
LowSide
Sawtooth
Generator
Int. Resistor
Network
FB
RI 1
RI..N
Mode
Onlyin 2x2SON
GND
TPS62260, TPS62261
TPS62262, TPS62263
SLVS763B – JUNE 2007 – REVISED FEBRUARY 2008
TERMINAL FUNCTIONS
TERMINAL
NO.
I/O
DESCRIPTION
NO.
NAME
SON
TSOT23-5
2x2-6
VIN
5
1
PWR
VIN power supply pin.
GND
6
2
PWR
GND supply pin
This is the enable pin of the device. Pulling this pin to low forces the device into shutdown
EN
4
3
I
mode. Pulling this pin to high enables the device. This pin must be terminated.
This is the switch pin and is connected to the internal MOSFET switches. Connect the
SW
1
5
OUT
external inductor between this terminal and the output capacitor.
Feedback Pin for the internal regulation loop. Connect the external resistor divider to this pin.
FB
3
4
I
In case of fixed output voltage option, connect this pin directly to the output capacitor
This pin is only available at SON package option. MODE pin = high forces the device to
MODE
2
I
operate in fixed frequency PWM mode. MODE pin = low enables the Power Save Mode with
automatic transition from PFM mode to fixed frequency PWM mode.
4
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Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS62260 TPS62261 TPS62262 TPS62263


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