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| 型号： | TPS62734DRYT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 3000 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 1 X 1.50 MM, 0.60 MM HEIGHT, PLASTIC, MO-287UFAD, SON-6 |
| 文件页数： | 1/27页 |
| 文件大小： | 4698K |
| 代理商： | TPS62734DRYT |
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TPS62730
VIN
ON/BYP
STAT
GND
VOUT
SW
V
2.1V
OUT
V
2.2V - 3.9V*
IN
C
2.2
IN
F
C
2.2
OUT
F
L 2.2 H
m
ON
BYP
* At V < 2.2V, V
tracks V
IN
OUT
IN
R
pullup
I
With TPS62730
BAT
15
17
19
21
23
25
27
29
2
2.2
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
Battery Voltage - V
BAT
Battery Current
Reduction @
CC2540
0dBm CW TX
Power
Battery Current Reduction of CC2540
2.4GHz Bluetooth Low Energy
System-On-Chip Solution
Battery
Current
-
mA
I
NO TPS62730
BAT
SLVSAC3
– MAY 2011
Step Down Converter with Bypass Mode for Ultra Low Power Wireless Applications
Check for Samples: TPS62730
1
FEATURES
DESCRIPTION
The TPS62730 is a high frequency synchronous step
Input Voltage Range VIN from 1.9V to 3.9V
down DC-DC converter optimized for ultra low power
Typ. 30nA Ultra Low Power Bypass Mode
wireless applications. The device is optimized to
Typ. 25
μA DC/DC Quiescent Current
supply TI's Low Power Wireless sub 1GHz and
Internal Feedback Divider Disconnect
2.4GHz
RF
transceivers
and
System-On-Chip-solutions. The TPS62730 reduces
Typ. 2.1
Bypass Switch between VIN and VOUT
the current consumption drawn from the battery
Automatic Transition from DC/DC to Bypass
during TX and RX mode by a high efficient step down
Mode
voltage conversion. It provides up to 100mA output
Up To 3MHz switch frequency
current and allows the use of tiny and low cost chip
Up to 95% DC/DC Efficiency
inductors and capacitors. With an input voltage range
Open Drain Status Output STAT
of 1.9V to 3.9V the device supports Li-primary battery
chemistries such as Li-SOCl2, Li-SO2, Li-MnO2 and
Output Peak Current up to 100mA
also two cell alkaline batteries.
Fixed Output Voltage 2.1V
The TPS62730 features an Ultra Low Power bypass
Small External Output Filter Components
mode with typical 30nA current consumption to
2.2
μH/ 2.2μF
support sleep and low power modes of TI's CC2540
Optimized For Low Output Ripple Voltage
Bluetooth Low Energy and CC430 System-On-Chip
Small 1
× 1.5 × 0.6mm3 SON Package
solutions. In this bypass mode, the output capacitor
12 mm2 Minimum Solution Size
of
the
DC/DC
converter
is
connected
via
an
integrated typ. 2.1
Bypass switch to the battery.
APPLICATIONS
In DC/DC operation mode the device provides a
CC2540 Bluetooth Low Energy
regulated output voltage of 2.1V to the system. With a
System-On-Chip Solution
switch frequency up to 3MHz, the TPS62730 features
Low Power Wireless Applications
low output ripple voltage and low noise even with a
small 2.2uF output capacitor. The automatic transition
RF4CE, Metering
into bypass mode during DC/DC operation prevents
an increase of output ripple voltage and noise once
the DC/DC converter operates close to 100% duty
cycle. The device automatically enters bypass mode
once the battery voltage falls below the transition
threshold VIT BYP . The TPS62730 is available in a 1 ×
1.5mm2 6 pin QFN package.
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.
PRODUCTION DATA information is current as of publication date.
Copyright
2011, 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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