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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

2020-02-27 | Return

Toshiba Electronic Devices & Storage Corporation have developed 74 types of "TCR3UF series", small surface mount LDO regulators which adopt SMV package with a maximum output current of 300 mA. And they have extended Toshiba’s lineup.

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
General-purpose SMV packages : 2.9×2.8 mm (typ.), t=1.1 mm (typ.)
Low consumption current (Low quiescent current) : IB(ON1)=0.34 μA (typ.)
High ripple rejection ratio, high speed road transient response : R.R.=70 dB (typ.), ⊿VOUT= -51/+36 mV (typ.)

Applications
IoT equipment
Wearable devices (Hearable devices, etc.)
Mobile devices, etc.

Product Specifications

Part number		TCR3UM series	TCR3UG series	TCR3UF series ^[3]
Packages	Name (Package code)	DFN4	WCSP4F	SMV (SOT-25)
Packages	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 I_OUT max (mA)	300
	Output voltage V_OUT (V)	0.8 to 5.0
	Input voltage V_IN (V) @I_OUT=1 mA	1.5 to 5.5
	Operating temperature T_opr (°C)	-40 to 85
Electrical characteristics (Unless otherwise specified, @T_j=25 °C)	Quiescent current I_B(ON1) typ. (μA) @V_OUT≤1.5 V, I_OUT=0 mA^[2]	0.34
	Stand-by current I_B(OFF1) typ. (μA) @V_CT=0 V、V_IN=5.5 V^[2]	0.03
	Ripple rejection ratio R.R. typ. (dB) @V_Ripple=200 mVp-p, I_OUT=10 mA, f=1 kHz, T_a=25 °C^[2]	70
	Drop-out voltage V_DO typ. (mV) @V_OUT=3.3 V, I_OUT=300 mA^[2]	196	140	206
	Load transient response ⊿V_OUT typ. (mV) @V_OUT=0.8 V, V_IN=3.3 V, I_OUT=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

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

Source: http://www.semicon.toshiba.co.jp/eng/