TPS61253_016 Datasheet, PDF (1/37 Pages) Texas Instruments – TPS6125x 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging

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TPS61253, TPS61254, TPS61256, TPS61258, TPS61259, TPS612592
SLVSAG8G – SEPTEMBER 2011 – REVISED JUNE 2016
TPS6125x 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging
1 Features
•1 93% Efficiency at 3.5-MHz Operation
• 21-µA Quiescent Current in Standby Mode
• 37-µA Quiescent Current in Normal Operation
• Wide V_IN Range From 2.3 V to 5.5 V
• V_IN ≥ V_OUT Operation
• I_OUT ≥ 800 mA at V_OUT = 4.5 V, V_IN ≥ 2.65 V
• I_OUT ≥ 1000 mA at V_OUT = 5.0 V, V_IN ≥ 3.3 V
• I_OUT ≥ 1500 mA (Peak) at V_OUT = 5.0 V, V_IN ≥ 3.3
V
• ±2% Total DC Voltage Accuracy
• Light-Load PFM Mode
• Selectable Standby Mode or True Load
Disconnect During Shutdown
• Thermal Shutdown and Overload Protection
• Only Three Surface-Mount External Components
Required
• Total Solution Size < 25 mm²
• 9-Pin NanoFree^TM (CSP) Packaging
2 Applications
• Cell Phones, Smart Phones
• Mono and Stereo APA Applications
• USB Charging Ports (5V)
The TPS6125x 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 TPS6125x device can also maintain
its output biased at the input voltage level. In this
mode, the synchronous rectifier is current limited
allowing external load (e.g. audio amplifier) to be
powered with a restricted supply. In this mode, the
quiescent current is reduced to 21 µA. During
shutdown, the load is completely disconnected from
the battery. Input current in shutdown mode is less
than 1 µA (typ), which maximizes battery life.
The TPS6125x 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)
TPS6125x
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
3 Description
The TPS6125x device provides a power supply
solution for battery-powered portable applications.
Intended for low-power applications, the TPS6125x
supports up to 800-mA load current from a battery
discharged as low as 2.65V 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.
100
90
80
70
60
50
40
.
30
20
10
0
V_{I - Input Voltage - V}
VO = 5.0 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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.