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TPS62651YFFT Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza TPS62651YFFT
Descripción Electrónicos  800-mA 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER WITH I2CTM COMPATIBLE INTERFACE IN CHIP SCALE PACKAGING
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS62651YFFT Datasheet(HTML) 1 Page - Texas Instruments

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CSP-9
1
FEATURES
DESCRIPTION
APPLICATIONS
FB
C2
4.7 F
m
L1
0.47 H
m
VIN
TPS62650
2.3V..5.5V
SW
GND
EN
VSEL
SDA
SCL
upto3.4Mbips
VO
C1
VI
VO =Roof
VO =Floor
I2C Bus
4.7 F
m
10
20
30
40
50
60
70
80
90
100
0.1
1
10
100
1000
IO
LoadCurrent
mA
0
V =3.6V
ForcedPWMOperation
I
V =4.2V
PFM/PWMOperation
I
V =3.6V
PFM/PWMOperation
I
V =2.7V
PFM/PWMOperation
I
VO =1.2V
TPS62650
TPS62651
www.ti.com................................................................................................................................................................................................. SLVS808 – AUGUST 2009
800-mA, 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER
WITH I2CTM COMPATIBLE INTERFACE IN CHIP SCALE PACKAGING
2
• 86% Efficiency at 6 MHz Operation
• 38µA Quiescent Current
The
TPS6265x
device
is
a
high-frequency
• Wide V
IN Range From 2.3 V to 5.5 V
synchronous step-down dc-dc converter optimized for
• 6MHz Regulated Frequency Operation
battery-powered portable applications. Intended for
low-power applications, the TPS6265x supports up to
• Best-In-Class Load and Line Transient
800mA load current and allows the use of small, low
• ±2% PWM DC Voltage Accuracy
cost inductors and capacitors.
• Automatic PFM/PWM Mode Switching
The device is ideal for mobile phones and similar
• Low Ripple Light-Load PFM
portable applications powered by a single-cell Li-Ion
• I2C Compatible Interface up to 3.4 Mbps
battery. With an output voltage range adjustable via
I2C interface down to 0.75V, the device supports
• Pin-Selectable Output Voltage (VSEL)
low-voltage
DSPs
and
processors
core
power
• Internal Soft-Start, <150-µs Start-Up Time
supplies in smart-phones and handheld computers.
• Current Overload and Thermal Shutdown
The TPS6265x operates at a
regulated
6MHz
Protection
switching
frequency
and
enters
the
efficiency
• Three Surface-Mount External Components
optimized power-save mode operation at light load
Required (One MLCC Inductor, Two Ceramic
currents to maintain high efficiency over the entire
Capacitors)
load current range. In the shutdown mode, the
current consumption is reduced to less than 3.5
µA.
• Complete Sub 1-mm Component Profile
Solution
The serial interface is compatible with Standard,
• Total Solution Size <13mm2
Fast/Fast
Plus
and
High-Speed
mode
I2C
specification allowing transfers at up to 3.4 Mbps.
• Available in a 9-Pin NanoFree™ (CSP)
This communication interface is used for dynamic
Packaging
voltage scaling with voltage steps down to 12.5mV,
for setting the output voltage or reprogramming the
mode of operation (PFM/PWM or Forced PWM) for
• SmartReflex™ Compliant Power Supply
instance.
• OMAP™ Application Processor Core Supply
The TPS6265x is available in an 9-pin chip-scale
• Cell Phones, Smart-Phones
package (CSP).
• Micro DC-DC Converter Modules
Figure 1. Typical Application
Figure 2. Efficiency vs Load Control
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
NanoFree, SmartReflex, OMAP are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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