The new "TCR3UF series" is for power management of IoT equipment, wearable devices, mobile devices, etc. It has low consumption current characteristics, and features an industry's leading trade-off between high ripple rejection ratio and high speed load transient response[1]. Various protection functions such as overheat protection, overcurrent protection, and inrush current limiter are also incorporated.
In addition to the previously released compact and low height WCSP4F package "TCR3UG series" and the small and general-purpose DFN4 package "TCR3UM series", the new lead type and general-purpose SMV package "TCR3UF series" has been released this time.
The TCR3UF series is suitable for battery-powered devices that operate for a long time and power supplies for sensors that are susceptible to voltage fluctuations such as noise. There are 37 types of output voltage in the range of 0.8 V to 5.0 V, and a total of 74 types are available, with or without auto-discharge. Products can be selected according to the intended application.

Notes :
[1] By an output current 300 mA LDO regulator, as of January 2020, from a survey by Toshiba.

Features

Applications

Product Specifications

Part number TCR3UM series TCR3UG series TCR3UF series
[3]
Packages Name
(Package code)		 The package photograph of DFN4.
DFN4		 The package photograph of WCSP4F.
WCSP4F		 The package photograph of SMV.
SMV
(SOT-25)
Size typ.  (mm) 1.0×1.0,
t=0.60 (max)		 0.645×0.645,
t=0.33 (max)		 2.9×2.8,
t=1.1
Operating ranges Output current  IOUT max  (mA) 300
Output voltage  VOUT  (V) 0.8 to 5.0
Input voltage  VIN  (V)
@IOUT=1 mA		 1.5 to 5.5
Operating temperature  Topr  (°C) -40 to 85
Electrical
characteristics
(Unless otherwise
specified, @Tj=25 °C)		 Quiescent current  IB(ON1) typ.  (μA)
@VOUT≤1.5 V, IOUT=0 mA[2]		 0.34
Stand-by current IB(OFF1) typ. (μA)
@VCT=0 V、VIN=5.5 V[2]		 0.03
Ripple rejection ratio  R.R. typ.  (dB)
@VRipple=200 mVp-p, IOUT=10 mA,
f=1 kHz, Ta=25 °C[2]		 70
Drop-out voltage  VDO typ.  (mV)
@VOUT=3.3 V, IOUT=300 mA[2]		 196 140 206
Load transient response  ⊿VOUT typ.  (mV)
@VOUT=0.8 V, VIN=3.3 V,
IOUT=1→50 mA/50→1 mA[2]		 -51/+36 -60/+60 -51/+36

Notes :
[2] Common test conditions : Unless otherwise specified, @VIN=VOUT+1 V (VOUT>1.5 V), VIN=2.5 V (VOUT≤1.5 V),
IOUT=50 mA, CIN=1.0 μF, COUT=1.0 μF
[3] New products

Block Diagram

The illustration of block diagrampin of a general-purpose package is newly available in the lineup of Toshiba’s small, surface mount LDO regulator which enables long operation and operational stability of IoT equipment : TCR3UF series.

Note : Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purposes.

Example of Application Circuit

The illustration of application circuit example of a general-purpose package is newly available in the lineup of Toshiba’s small, surface mount LDO regulator which enables long operation and operational stability of IoT equipment : TCR3UF series.


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