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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
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.
1 Features
1
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93% Efficiency at 3.5-MHz Operation
21-µA Quiescent Current in Standby Mode
37-µA Quiescent Current in Normal Operation
Wide VIN Range From 2.3 V to 5.5 V
VIN ≥ VOUT 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.
IOUT ≥ 800 mA at VOUT = 4.5 V, VIN ≥ 2.65 V
IOUT ≥ 1000 mA at VOUT = 5.0 V, VIN ≥ 3.3 V
IOUT ≥ 1500 mA (Peak) at VOUT = 5.0 V, VIN ≥ 3.3
V
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±2% Total DC Voltage Accuracy
Light-Load PFM Mode
Selectable Standby Mode or True Load
Disconnect During Shutdown
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.
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Thermal Shutdown and Overload Protection
Only Three Surface-Mount External Components
Required
Total Solution Size < 25 mm2
9-Pin NanoFreeTM (CSP) Packaging
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Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS6125x
DSBGA (9)
1.206 mm × 1.306 mm
2 Applications
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
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Cell Phones, Smart Phones
Mono and Stereo APA Applications
USB Charging Ports (5V)
Efficiency vs Load Current
VO = 5.0 V
100
3 Description
90
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.
80
70
60
50
40
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.
.
30
20
10
0
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.