1. Device Modeling Report
COMPONENTS: CMOS Low-Dropout Regulator
PART NUMBER: TCR4S18DWBG
MANUFACTURER: TOSHIBA
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2011
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2. Output Voltage vs. Input Voltage Characteristics
Circuit Simulation Result
3.0V
2.5V
2.0V
1.5V
1.0V
0.5V
0V
0V 0.5V 1.5V 2.5V 3.5V 4.5V 5.5V
V(OUT)
V_VIN
Evaluation circuit
U1
TCR4S18DWBG
IN OUT
IN OUT
CTRL GND
VIN CIN Co R1
0.1u 1.0u 36
Vctrl
2.5
0
Simulation result
Condition: IOUT=50mA, CIN=0.1uF, COUT=1uF
Condition Unit Measurement Simulation %Error
Parameter
VOUT VIN=2.8V V 1.8 1.800 0
VIN-VOUT VOUT=1.7V V 0.11 0.105 -4.55
All Rights Reserved Copyright (c) Bee Technologies Inc. 2011
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3. Line Regulation Characteristics
Circuit Simulation Result
1.810V
1.805V
1.800V
1.795V
2.3V 3.0V 4.0V 5.0V 6.0V
V(OUT)
V_VIN
Evaluation circuit
U1
TCR4S18DWBG
IN OUT
IN OUT
IOUT
VIN CIN CTRL GND Co
0.1u 1.0u
Vctrl 1m
2.5
0
Simulation result
Condition: IOUT=1mA, CIN=0.1uF, COUT=1uF
Condition Unit Measurement Simulation %Error
Parameter
Regline 2.3V  VIN  6V mV 1 0.999 0.1
All Rights Reserved Copyright (c) Bee Technologies Inc. 2011
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4. Load Regulation Characteristics
Circuit Simulation Result
1.90V
1.85V
1.80V
1.75V
1.70V
0A 50mA 100mA 150mA 200mA
V(OUT)
I_IOUT
Evaluation circuit
U1
TCR4S18DWBG
IN OUT
IN OUT
VIN CIN CTRL GND Co IOUT
0.1u 1u
2.8 Vctrl
2.5
0
Simulation result
Condition: VIN=2.8V, CIN=0.1uF, COUT=1uF
Condition Unit Measurement Simulation %Error
Parameter
Regload 1mA  IOUT  150mA mV 5 4.928 -1.44
All Rights Reserved Copyright (c) Bee Technologies Inc. 2011
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5. Quiescent Current Characteristics
Circuit Simulation Result
240uA
200uA
160uA
120uA
80uA
40uA
0A
0V 1.0V 2.0V 3.0V 4.0V 5.0V 6.0V
-I(U1:GND)
V_VIN
Evaluation circuit
U1
TCR4S18DWBG
IN OUT
IN OUT
CTRL GND IOUT
VIN CIN Co
I
0.1u 1u 0A
Vctrl
2.5
0
Simulation result
Condition: VIN=2.8V, CIN=0.1uF, COUT=1uF
Condition Unit Measurement Simulation %Error
Parameter
IB IOUT=0mA, uA 40 39.961 -0.78
All Rights Reserved Copyright (c) Bee Technologies Inc. 2011
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6. Overcurrent Protection Characteristics
Circuit Simulation Result
2.5V
2.0V
1.5V
1.0V
0.5V
0V
0A 100mA 200mA 300mA 400mA 500mA 600mA
V(OUT)
I(OUT)
Evaluation circuit
U1
TCR4S18DWBG
IN OUT
IN OUT OUT
CTRL GND 0
VIN CIN
0.1u Co
2.8 1u E1
Vctrl EVALUE
2.5 V(NL1,0)*(V(NL2,0)-1)
OUT+ IN+
OUT- IN-
NL1
0
0 R1
50
NL2
0 R2
V4 10MEG
T1 = 0
T2 = 0.1
0 T3 = 0.5 0
T4 = 1
V1 = 1000
V2 = 1
V3 = 0.1
V4 = 0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2011
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7. Load Transient Response Characteristics
Circuit Simulation Result
40mA
20mA
0A
I(IOUT)
1.825V
1.800V
1.775V
720us 760us 800us 840us 880us 920us
V(OUT)
Time
40mA
20mA
0A
I(IOUT)
1.825V
1.800V
SEL>>
1.775V
500us 510us 520us 530us 540us 550us
V(OUT)
Time
Evaluation circuit
U1
TCR4S18DWBG
IN OUT
IN OUT
IOUT
CTRL GND I1 = 1m
VIN I2 = 30m
CIN TD = 510u
0.1u COUT TR = 1.5u
2.8Vdc Vctrl 1.0u TF = 1.5u
2.5 PW = 250u
PER = 1
0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2011
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