TPS61256C Datasheet, PDF (1/29 Pages) Texas Instruments – 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging

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TPS61256C
SLVSDQ1 – FEBRUARY 2017
TPS61256xC 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging
1 Features
•1 93% Efficiency at 3.5-MHz Operation
• 37-µA Quiescent Current in Normal Operation
• Wide V_IN Range From 2.3 V to 5.5 V
• Support V_IN ≥ V_OUT Operation
• ±2% Total DC Voltage Accuracy
• Light-Load PFM Mode
• Pass-through Mode by Pulling EN Low
• Thermal Shutdown and Overload Protection
• Only Three Surface-Mount External Components
Required
• Total Solution Size < 25 mm²
• 9-Pin NanoFree™ (CSP) Packaging
2 Applications
• NFC PA Supply
• Cell Phones, Smart Phones
• Mono and Stereo APA Applications
• USB Charging Ports
3 Description
The TPS61256xC device provides a power supply
solution for battery-powered portable applications.
Intended for low-power applications, the
TPS61256xC supports up to 800-mA load current
from a battery discharged as low as 2.65 V and
allows the use of low cost chip inductor and
capacitors.
With a wide input voltage range of 2.3 V to 5.5 V, the
device supports applications powered by Li-Ion
batteries with extended voltage range. Different fixed
voltage output versions are available from 3.15 V to
5.0 V.
The TPS61256xC operates at a regulated 3.5-MHz
switching frequency and enters power-save mode
operation at light load currents to maintain high
efficiency over the entire load current range. The
PFM mode extends the battery life by reducing the
quiescent current to 37 μA (typ) during light load
operation.
In addition, the TPS61256xC device can also support
the pass-through mode by pulling EN to low. In this
mode, the output voltage follows the input voltage
with a voltage drop by the resistance of the inductor
and high-side FET.
The TPS61256xC offers a very small solution size
due to minimum amount of external components. It
allows the use of small inductors and input capacitors
to achieve a small solution size.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61256xC
DSBGA (9)
1.206 mm × 1.306 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Efficiency vs Load Current
100
V_O = 5.0 V
90
80
70
60
50
40
.
30
20
10
0
V_{I - Input Voltage - V}
I O ^{- Output Current - mA}
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.