Toshiba releases the TCR3DMxxA and TCR3EMxxA Series of LDO regulators in Toshiba Semiconductor (Thailand)
Toshiba has started mass production of the TCR3DMxxA series low dropout (LDO) regulators and the TCR3EMxxA series low current consumption LDO regulators in small packages at Toshiba Semiconductor (Thailand).
The new TCR3DMxxA series is a low dropout type LDO regulator. Also, the TCR3EMxxA series is low current consumption type LDO regulator. Both series provide a control pin threshold voltage of VCTH=0.8V (min) and support 1.2V I/Os, helping to reduce device power consumption.
TCR3DMxxA series and TCR3EMxxA series use small and low-profile surface-mount type DFN4D packages. In addition, small ceramic types can be used for input and output capacitors, making them suitable for power supply lines for mobile devices, wearable devices, and other small devices that require high-density mounting.
Toshiba's website now offers a reference design for TCR3EMxxA / 3DMxxA / 3LMxxA Series LDO Regulators With 300mA Output in Small DFN4D Package for Power Supply Circuit Applications.
Toshiba will supply LDO regulators stably, including the TCR3DMxxA and TCR3EMxxA series.
Reference Design for “Small Package DFN4D, 300mA Output LDO Regulator 3 Series Power Circuit Application,” Utilizing the New Product
Features
- Low dropout voltage (TCR3DMxxA series)
- Low current consumption (low quiescent current) (TCR3EMxxA series)
- Small and low profile DFN4D package (Common to TCR3DMxxA / 3EMxxA series)
Features Explanation
1. Low dropout voltage (TCR3DMxxA series)
Low dropout voltage: VDO=216mV (typ.) (VOUT=2.5V, IOUT=300mA, Tj=25°C)
The dropout voltage is the specified minimum potential difference between the input voltage and the target output voltage at a specific output current. When the input voltage drops and the input-output potential difference falls below the dropout voltage, the output voltage cannot be adjusted. TCR3DMxxA series is a low-dropout voltage product. Therefore, it is possible to maintain the output voltage even when the battery voltage drops for battery-powered applications. In addition, since large current output is possible at low input voltage, the TCR3DMxxA series allows low power consumption and high efficiency of power supply.
2. Low current consumption (low quiescent current) (TCR3EMxxA series)
Low current consumption (low quiescent current): IB(ON)=35μA (max) (IOUT=0mA, Vin=5.5V, Tj=25°C)
The quiescent current of an LDO is the current consumed by the control circuit inside the operating LDO.
When the quiescent current is low, the power consumption of the entire circuit can be also kept low. This is the advantage for longer battery life.
TCR3EMxxA series suppresses the quiescent current to 35μA (max) and help to low power consumption and long-term drive of the entire device.
3. Small and low profile DFN4D package (Common to TCR3DMxxA / 3EMxxA series)
The TCR3DMxxA / 3EMxxA series use a small, low-profile, surface-mount type DFN4D package. In addition, small ceramic input and output capacitors can be used, making these series suitable for power supply lines of small devices that require high-density mounting, such as mobile devices and wearable terminals.
Applications
- Mobile devices, wearable devices, IoT devices, etc.
Main Specifications
Part number |
||||||
|---|---|---|---|---|---|---|
Package |
Name |
|||||
Size (mm) |
Typ. |
1.0×1.0, t=0.37 |
||||
Operating ranges (Ta=-40 to 85°C) |
Input voltage VIN (V) |
1.5 to 5.5 [1] |
1.3 to 5.5 [1] |
|||
Output voltage VOUT (V) |
1.0 to 4.5 |
0.8 to 5.0 |
||||
Output current IOUT (mA) |
300 |
|||||
Electrical characteristics |
Quiescent current IB(ON) (μA) |
IOUT=0mA, VIN=5.5V [2] |
Typ. |
86 |
35 |
|
Drop-out voltage VDO [3] (mV) |
Typ. |
216 |
330 |
|||
Ripple rejection ratio R.R. (dB) |
f=1kHz, IOUT=10mA, Ta=25°C |
Typ. |
72 |
68 |
||
Output noise voltage VNO (μVrms) |
IOUT=10mA, 10Hz≦f≦100kHz, Ta=25°C |
Typ. |
38 |
50 |
||
Load transient response ⊿VOUT (mV) |
Typ. |
-80/+80mV (1←→300mA) [4] |
-95/+100mV (1←→300mA) [4] |
|||
Control pin threshold voltage VCTH (V) |
Control pin input voltage "HIGH", Tj=-40 to 85°C |
Min |
0.8 |
0.8 |
||
Control pin threshold voltage VCTL (V) |
Control pin input voltage "LOW", Tj=-40 to 85°C |
Max |
0.4 |
0.4 |
||
Overcurrent protection function |
Yes |
|||||
Overheat protection function |
Yes |
|||||
Auto discharge function |
Yes |
|||||
Sample Check & Availability |
 |
|
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Notes:
[1] Please refer to dropout voltage and use it within absolute maximum ratings junction temperature and operation temperature ranges.
[2] Except control pull down current (ICT)
[3] VDO=VIN1- (VOUT1×0.97)
VOUT1 is the output voltage when VIN=VOUT+1.0V.
VIN1 is the input voltage at which the output voltage becomes 97% of V OUT1 after gradually decreasing the input voltage.
[4] tr=tf=1.0μs (defined when 10% to 90% is 0.8µs)
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