Download Achieve 20-30% power savings in low-power

Achieve 20-30% power savings in low-power RF devices
with TI’s TPS62730 step-down converter plus integrated bypass mode
for ultra-low-power wireless applications.
The TPS62730 is a high- frequency synchronous step-down DC/DC converter optimized for ultra-low-power wireless
applications such as TI’s low-power wireless sub 1-GHz and 2.4-GHZ RF transceivers. The device reduces the current
consumption drawn from the battery during TX and RX mode by a high-efficient step-down voltage conversion.
30%
Battery Current Reduction by Use of TPS62730 in a BluetoothReduction
Low Energy System-On-Chip Solution
in Current
Battery Current - mA
29
27
30%
Less
Current
25
23
21
Battery Current
Reduction @
CC2540 0dBM
CW TX Power
• Step down converter provides excellent
low-output voltage ripples over the entire
load range which makes this part ideal for
low-power RF applications.
19
17
15
2
Features and Benefits
• DCS Control™, an advanced regulation
topology that combines the advantages
of hysteric and voltage mode control
architectures, enables excellent AC line
and load transient regulation.
2.4
2.8
3.2
• Fixed output voltage options feature
smallest solution size by using only
three external components.
3.6
Battery Voltage - VBAT
Parametrics
Iout (Max) (A)
0.1
Topology
Buck
Vin (Min) (V)
1.9
Operating Temperature Range (°C)
-40 to 85
Vin (Max) (V)
3.9
Pin/Package
6SON
Vout (Min) (V)
1.9
Rating
Catalog
Vout (Max) (V)
2.1
Duty Cycle (Max) (%)
100
Switching Frequency (Typ) (kHz)
3000
Regulated Outputs (#)
1
Functional Block Diagram
• Input voltage range of 1.9 V to 3.9 V
supports Li-primary battery chemistries
such as Li-SOCI2, LiSO2, Li-MnO2 and
also two-cell alkaline batteries.
• Ultra-low-power bypass-mode with typical
30-nA current consumption supports sleep
and low-power modes of modern RF
transceivers.
• DC/DC operation mode provides a regulated
output voltage consuming typical 25-µA
quiescent current
For samples, evaluation boards and reference designs visit power.ti.com
TPS62730 with CC2540
TPS62730 with CC430
For more information visit www.ti.com/tps62730
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