ROHM BU34TD2WNVX Technical data
CMOS LDO Regulators for Portable Equipments
1ch 200mA
CMOS LDO Regulators
BU□□TD2WNVX series
●Description
BUTD2WNVX series is high-performance FULL CMOS regulator with 200-mA output, which is mounted on micro
miniature package SSON004X1010 (1.0 mm 1.0 mm 0.6 mm). It has excellent noise characteristics and load
responsiveness characteristics despite its low circuit current consumption of 35µA. It is most appropriate for various
applications such as power supplies for logic IC, RF, and camera modules. Micro miniature SSON004X1010 with built-in
heatsink is adopted for the package, which contributes to the space-saving design of the set.
●Features
1) High-accuracy output voltage of 1% (25 mV on Vout<2.5V products)
2) High ripple rejection: 70 dB (Typ., 1 kHz,)
3) Compatible with small ceramic capacitor (CIN=Co=0.47 µF)
4) Low current consumption: 35 µA
5) ON/OFF control of output voltage
6) With built-in overcurrent protection circuit and thermal shutdown circuit
7) With built-in output discharge circuit
8) Adopting ultra-small package SSON004X1010
●Applications
Battery-powered portable equipment, etc.
●Line up
■200 mA BU□□TD2WNVX Series
Product Name 1.0 1.2 1.5 1.8 1.85 1.9 2.0 2.05 2.1 2.3 2.5 Package
No.11020ECT07
BU□□TD2WNVX
Model name：BU□□
Symbol
a
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
SSON004X1010 2.6 2.7 2.8 2.85 2.9 3.0 3.1 3.2 3.3 3.4
○ ○ ○ ○ ○ ○ ○ ○ ○ ○
TD2WNVX
a
Contents
Specification of output voltage
□□
10 1.0 V(Typ.) 20 2.0 V(Typ.) 27 2.7 V(Typ.) 32 3.2 V(Typ.)
12 1.2 V(Typ.) 2A 2.05 V(Typ.) 28 2.8 V(Typ.) 33 3.3 V(Typ.)
15 1.5 V(Typ.) 21 2.1 V(Typ.) 2J 2.85 V(Typ.) 34 3.4 V(Typ.)
18 1.8 V(Typ.) 23 2.3V(Typ.) 29 2.9 V(Typ.)
1J 1.85 V(Typ.) 25 2.5 V(Typ.) 30 3.0 V(Typ.)
19 1.9 V(Typ.) 26 2.6 V(Typ.) 31 3.1 V(Typ.)
Output voltage
(V)
□□
Output voltage
(V)
□□
Output voltage
(V)
□□
Output voltage
(V)
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© 2011 ROHM Co., Ltd. All rights reserved.
1/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Absolute maximum ratings
Parameter Symbol Ratings Unit
Maximum applied power voltage VMAX -0.3 ~ +6.5 V
Technical Note
Power dissipation Pd 560
(*1)
mW
Maximum junction temperature TjMAX +125 ℃
Operational temperature range Topr -40 ~ +85 ℃
Storage temperature range Tstg -55 ~ +125 ℃
(*1) When PCB (70 mm 70 mm, thickness 1.6-mm glass epoxy) a standard ROHM board is implemented.
Reduced to 5.6 mW/℃ when used at Ta=25℃ or higher.
●Recommended operating range (Do not exceed Pd.)
Parameter Symbol Ratings Unit
Input power supply voltage VIN 1.7 ~ 5.5 V
Maximum output current IMAX 200 mA
●Recommended operating conditions
Parameter Symbol
Ratings
Min. Typ. Max.
Unit Conditions
Input capacitor CIN 0.22
Output capacitor CO 0.22
(*2) Set the capacity value of the capacitor so that it does not fall below the minimum value, taking temperature characteristics,
DC device characteristics, and change with time into consideration.
(*2)
0.47 － µF A ceramic capacitor is recommended.
(*2)
0.47 － µF A ceramic capacitor is recommended.
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© 2011 ROHM Co., Ltd. All rights reserved.
2/41
2011.07 - Rev.C
BU□□TD2WNVX series
Technical Note
●Electrical characteristics(Ta=25℃, VIN=VOUT+1.0V
Parameter Symbol
(*3)
, STBY=VIN, CIN=0.47μF, CO=0.47μF, unless otherwise noted.)
Limits
Min. Typ. Max.
Unit Conditions
Overall Device
Output Voltage VOUT
VOUT
×0.99
VOUT
-25mV
VOUT
VOUT
×1.01
VOUT
+25mV
IOUT=10µA,VOUT≧2.5V
V
IOUT=10µA,VOUT＜2.5V
Operating Current IIN - 35 60 µA IOUT=0mA
Operating Current (STBY) ISTBY - - 1.0 µA STBY=0V
Ripple Rejection Ratio RR 45 70 - dB VRR=-20dBv,fRR=1kHz,IOUT=10mA
- 280 540 mV
- 260 500 mV
Dropout Voltage VSAT
- 240 460 mV
- 220 420 mV
Line Regulation VDL - 2 20 mV
2.5V≦VOUT≦2.6V
(VIN=0.98*VOUT,IOUT=200mA)
2.7V≦VOUT≦2.85V
(VIN=0.98*VOUT,IOUT=200mA)
2.9V≦VOUT≦3.1V
(VIN=0.98*VOUT,IOUT=200mA)
3.2V≦VOUT≦3.4V
(VIN=0.98*VOUT,IOUT=200mA)
VIN=VOUT+1.0V to 5.5V
IOUT=10µA
(*4)
Load Regulation VDLO - 10 80 mV IOUT=0.01mA to 100mA
Over-current Protection (OCP)
Limit Current ILMAX 220 400 700 mA Vo=VOUT*0.95
Short Current ISHORT 20 70 150 mA Vo=0V
Standby Block
Discharge Resistor RDSC 20 50 80 Ω VIN=4.0V, STBY=0V, VOUT=4.0V
STBY Pin Pull-down Current ISTB 0.1 0.6 2.0 µA STBY=1.5V
ON VSTBH 1.2 - 5.5 V
STBY Control Voltage
OFF VSTBL -0.3 - 0.3 V
* This product does not have radiation-proof design.
(*3) VIN=2.5V for VOUT≦1.5V
(*4) VIN=2.5V to 5.5V for VOUT≦1.5V
●Electrical characteristics
(Ta=25℃, STBY=VIN, CIN=0.47μF, Co=0.47μF, unless otherwise noted.)
Parameter Symbol
of each Output Voltage
Limits
Min. Typ. Max.
80 160 -
Unit Conditions
VIN=1.7V
1.2V
200 - - VIN=2.1V
1.5V
Maximum
output current
1.8V 200 - - VIN=2.4V
1.9V 200 - - VIN=2.5V
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© 2011 ROHM Co., Ltd. All rights reserved.
60 120 - VIN=1.8V
mA
200 - - VIN=2.2V
3/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Block diagram, recommended circuit diagram, and pin configuration diagram
BU□□TD2WNVX
VIN
Cin
VSTBY
VIN
4
VREF
2
GND
STBY
3
Recommended ceramic capacitor for Cin & Co
Murata Manufacturing Co., Ltd.
GRM188B11A474KA61D
OCP
TSD
STBY
Fig.1 Recommended circuit diagram
Discharge
VOUT
1
VOUT
Co
PIN No. Symbol Function
1 VOUT
2 GND
3 STBY
4 VIN
●Input / Output terminal equivalent circuit schematic
1pin (VOUT) 2pin (GND) 3pin (STBY) 4pin (VIN)
Technical Note
Voltage output
Grounding
ON/OFF control of output voltage
(High: ON, Low: OFF)
Power input
Fig.2 Input/Output equivalent circuit
●About input/output capacitor
It is recommended to place a capacitor as close as possible to
the pins between the input terminal and GND or between the
output terminal and GND.
The capacitor between the input terminal and GND becomes
valid when source impedance increases or when wiring is long.
The larger the capacity of the output capacitor between the
output terminal and GND is, the better the stability and
characteristics in output load fluctuation become.
However, please check the status of actual implementation.
Ceramic capacitors generally have variation, temperature
characteristics, and direct current bias characteristics and the
capacity value also decreases with time depending on the
usage conditions. It is recommended to select a ceramic
capacitor upon inquiring about detailed data of the related
manufacturer.
●About the equivalent series resistance (ESR) of a ceramic capacitor
Capacitors generally have ESR (equivalent series resistance)
and it operates stably in the ESR-IOUT area shown on the right.
Since ceramic capacitors, tantalum capacitors, electrolytic
capacitors, etc. generally have different ESR, please check the
ESR of the capacitor to be used and use it within the stability
area range shown in the right graph for evaluation of the actual
application.
Capacity value of ceramic capacitor - DC bias characteristics
10
0
-10
-20
-30
-40
-50
-60
-70
Capacitance Change [%]
-80
-90
-100
10-V wit hstand voltag e
F char acter isti cs
00.511.522.533.54
Example
(
)
10-V withstand voltag e
F char acteri sti cs
DC Bias Voltage [V]
10-V wit hstand volt age
B charac teri stic s
4-V withstand voltag e
X6S characteristics
Fig.3 Capacity – bias characteristics
Cout=0.47μF ,CIN=0.47μF ,Temp=+25℃
100
Unstable region
10
1
ESR [Ω]
ESR [Ω]
0.1
Stable region
0.01
0 50 100 150 200
IOUT [mA ]
Fig.4 Stability area characteristics (Example)
10-V withstand voltag e
B1charac teri sti cs
GRM18 8B11A105KA61D
6.3-V wi thstand volta ge
B charac teri stic s
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© 2011 ROHM Co., Ltd. All rights reserved.
4/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Reference data BU12TD2WNVX (Ta=25℃ unless otherwise specified.)
1.4
Temp=25°C
1.2
1.0
0.8
0.6
0.4
Output Voltage (V)
0.2
0.0
00.511.522.533.544.555.5
Io=0uA
Io=1 00uA
Io=50mA
Io=200mA
Input Voltage (V)
VIN= STBY
1.25
Temp=25°C
1.24
1.23
1.22
1.21
1.20
1.19
1.18
Output Voltage (V)
1.17
1.16
1.15
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2
Io=0uA
Io=1 00uA
Io=50mA
Io=200mA
Input Voltage (V)
Fig.5. Output Voltage
Fig.6. Line Regulation
1.6
1.4
1.2
1.0
0.8
0.6
0.4
STBY Pin Cu rr ent ( uA)
0.2
0.0
00.511.522.5 33.544.555.5
Temp=25°C
Temp=85°C
Temp= -40°C
Input Voltage (V)
100
VIN= 2.5V
STBY= 1.5V
80
60
40
Gnd Curr ent (uA)
20
0
0 0.05 0.1 0.15 0.2
Temp=85°C
Temp=-40°C
Temp=25°C
Output Current (A)
Fig.8. VSTBY - ISTBY
Fig.9. IOUT - IGND Fig.10. Load Regulation
1.4
Temp=25°C
1.2
1.0
VIN=1.7V
0.8
0.6
0.4
Output Voltage (V)
0.2
0.0
0 0.1 0.2 0.3 0.4 0.5 0.6
VIN=5.5V
Output Current (A)
VIN=2.5V
STBY= 1.5V
1.5
VIN= 2.5V
Io=0mA
1.0
0.5
Output Voltage (V)
0.0
Temp=25°C
Temp=85°C
00.511.5
STBY V oltage (V )
Fig.11. OCP Threshold
Fig.12. STBY Threshold
60
VIN =2.5V
STBY=1.5V
50
Io=0mA
40
30
20
Gnd Cur rent (uA)
10
0
-40 -15 10 35 60 85
Temp ( °C)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
Gnd Curr ent (uA)
0.2
0.1
0.0
-40 -15 10 35 60 85
Temp ( °C)
Fig.14. IGND vs Temp Fig.15. IGND - Temp (STBY)
VIN= STBY
Temp=-40°C
VIN= 2.5V
STBY=0V
Technical Note
100
Io=0uA
80
60
40
Gnd Current (uA)
20
0
00.511.522.533.544.555.5
Input Voltage (V )
Fig.7. Circuit Current IGND
1.25
VIN= 2.5V
1.24
STBY=1.5V
1.23
1.22
1.21
1.20
1.19
1.18
Output Voltage ( V)
1.17
Temp=-40°C
1.16
1.15
0 0. 05 0.1 0.15 0.2
Output Current (A)
1.25
VIN= 2.5V
1.24
STBY=1.5V
1.23
Io=0.1mA
1.22
1.21
1.20
1.19
1.18
Output Voltage (V)
1.17
1.16
1.15
-40 -15 10 35 60 85
Fig.13. VOUT - Temp
Temp=25°C
Temp ( °C)
Temp=85°
Temp=25°C
Temp=-40°C
VIN= STBY
Temp= 85°C
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5/41
2011.07 - Rev.C
BU□□TD2WNVX series
p
g
(
)
p
(
)
p
g
(
)
p
(
)
●Reference data BU12TD2WNVX (Ta=25 ℃unless otherwise specified.)
IOUT=0mA→50mA
V
e
ut Volta
Out
1.25
1.20
1.15
1.10
Output Current (mA)
100
50
0
Fig.16. Load Response
IOUT=0mA→100mA
1.25
1.20
1.15
Output Voltage (V)
1.10
Output Current (mA)
100
50
0
Fig.18. Load Response
IOUT=0mA→200mA
1.30
1.20
1.10
Output Voltage (V)
1.00
Output Current (mA)
200
100
0
Fig.20. Load Response
IOUT=50mA→100mA
1.25
1.20
1.15
Output Voltage (V)
1.10
Output Current (mA)
100
50
0
Technical Note
IOUT=50mA→0mA
1.30
1.25
1.20
Output Voltage (V)
1.15
Fig.17. Load Response
IOUT=100mA→0mA
1.30
1.25
1.20
Output Voltage (V)
1.15
Fig.19. Load Response
IOUT=200mA→0mA
1.40
1.30
1.20
Output Voltage (V)
1.10
Fig.21. Load Response
IOUT=100mA→50mA
1.25
V
e
1.20
1.15
ut Volta
Out
1.10
Out
100
ut Current
50
mA
0
Output Current (mA)
100
50
0
Output Current (mA)
200
100
0
Out
ut Current
100
50
mA
0
Fig.22. Load Response
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6/41
Fig.23. Load Response
2011.07 - Rev.C
BU□□TD2WNVX series
●Reference data BU12TD2WNVX (Ta=25℃ unless otherwise specified.)
STBY=0→1.5V
2.0
1.0
0.0
Output Voltage (V)
STBY Voltage (V)
2.0
1.0
0.0
Fig.24. Start Up Time
Iout=0mA
VIN=STBY=0→2.5V
2.0
1.0
0.0
Output Voltage (V)
STBY Voltage (V)
4.0
2.0
0.0
Fig.26. Start Up Time
(VIN=STBY) Iout=0mA
STBY=1.5→0V
2.0
1.0
0.0
Output Voltage (V)
STBY Voltage (V)
2.0
1.0
0.0
Fig.28. Discharge Time
Technical Note
STBY=0→1.5V
2.0
1.0
0.0
Output Voltage (V)
Fig.25. Start Up Time
Iout=200mA
VIN=STBY=0→2.5V
2.0
1.0
0.0
Output Voltage (V)
Fig.27. Start Up Time
(VIN=STBY) Iout=200mA
VIN=2.5V→3.5V→2.5V
1.21
1.20
1.19
Output Voltage (V)
1.18
Fig.29. VIN Response
STBY Voltage (V)
2.0
1.0
0.0
STBY Voltage (V)
4.0
2.0
0.0
Input Voltage (V)
4.5
3.5
2.5
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7/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Reference data BU15TD2WNVX (Ta=25℃ unless otherwise specified.)
2.0
Temp=25°C
1.8
1.6
1.4
1.2
1.0
0.8
0.6
Output Voltage (V)
0.4
0.2
0.0
00.511.522.533.544.555.5
Io=0uA
Io=100uA
Io=50mA
Io=200mA
Input Voltage (V)
1.55
Temp=25°C
1.54
1.53
1.52
1.51
1.50
1.49
1.48
Output Voltage (V)
1.47
1.46
1.45
1.41.51.61.71.81.9 2 2.1
Io=0uA
Io=1 00uA
Io=50mA
Io=200mA
Input Voltage (V )
Fig.30. Output Voltage
Fig.31. Line Regulation
1.6
1.4
1.2
1.0
0.8
0.6
0.4
STBY Pin Curr ent ( uA)
0.2
0.0
00.511.522.5 33.544.555.5
Temp=25°C
Temp=85°C
Temp= -40°C
Input Voltage (V)
100
VIN= 2.5V
STBY= 1.5V
80
60
40
Gnd Curr ent (uA)
20
0
0 0.05 0.1 0.15 0.2
Temp=85°C
Temp=-40°C
Temp=25°C
Output Current (A )
Fig.33. VSTBY - ISTBY
Fig.34. IOUT - IGND
2.0
Temp=25°C
1.8
1.6
1.4
Output Voltage (V)
VIN=2.0V
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0 0.10.20.30.40.50.6
Output Current (A )
VIN=2.5V
VIN=5.5V
STBY=1.5V
2.0
VIN= 3.8V
Io=0mA
1.5
1.0
0.5
Output Voltage (V)
0.0
Temp=25°C
Temp=85°C
00.511.5
STBY V oltage (V)
Fig.36. OCP Threshold
Fig.37. STBY Threshold Fig.38. VOUT - Temp
60
VIN= 2.5V
STBY=1.5V
50
Io=0mA
40
30
20
Gnd Current (uA)
10
0
-40 -15 10 35 60 85
Temp ( °C)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
Gnd Curr ent (uA)
0.2
0.1
0.0
-40 -15 10 35 60 85
Temp ( °C)
Fig.39. IGND vs Temp
Fig.40. IGND vs Temp (STBY)
VIN= STBY
Temp=-40°C
VIN= 2.5V
STBY=0V
Technical Note
100
IO=0uA VIN= STBY
80
60
40
Gnd Curr ent (uA)
20
0
00.511.522.533.544.555.5
Fig.32. Circuit Current IGND
1.55
1.54
1.53
1.52
1.51
1.50
1.49
1.48
Output Voltage (V)
1.47
1.46
1.45
0 0.05 0.1 0.15 0.2
Fig.35. Load Regulation
1.55
1.54
1.53
1.52
1.51
1.50
1.49
1.48
Output Voltage (V)
1.47
1.46
1.45
-40 -15 10 35 60 85
VIN= 2.5V
STBY=1.5V
Temp=-40°C
VIN= 2.5V
STBY=1.5V
Io=0.1mA
Input Voltage (V)
Temp=25°C
Temp=85°C
Output Current (A)
Temp ( °C)
Temp= 85°C
Temp= 25°C
Temp= -40°C
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8/41
2011.07 - Rev.C
BU□□TD2WNVX series
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
●Reference data BU15TD2WNVX (Ta=25℃ unless otherwise specified.)
V
e
ut Volta
Out
1.55
1.50
1.45
1.40
IOUT=0mA→50mA
Output Current (mA)
100
50
0
Fig.41. Load Response
IOUT=0mA→100mA
1.55
V
e
1.50
1.45
ut Volta
Out
1.40
Output Current (mA)
100
50
0
Fig.43. Load Response
IOUT=0mA→200mA
V
e
ut Volta
Out
1.60
1.50
1.40
1.30
Output Current (mA)
200
100
0
Fig.45. Load Response
IOUT=50mA→100mA
V
e
ut Volta
Out
1.55
1.50
1.45
1.40
Output Current (mA)
100
50
0
Fig.47. Load Response
V
e
ut Volta
Out
Technical Note
Output Current (mA)
IOUT=50mA→0mA
1.60
1.30
V
e
1.55
1.25
1.50
1.20
ut Volta
Out
1.45
Output Voltage (V)
1.15
Fig.42. Load Response
IOUT=100mA→0mA
1.60
V
e
1.55
1.50
ut Volta
Out
1.45
Fig.44. Load Response
IOUT=200mA→0mA
1.70
1.60
1.50
1.40
Fig.46. Load Response
IOUT=100mA→50mA
1.60
V
e
1.55
1.50
ut Volta
Out
1.45
Fig.48. Load Response
Output Current (mA)
100
100
50
50
0
0
Output Current (mA)
100
50
0
Output Current (mA)
200
100
0
Output Current (mA)
100
50
0
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© 2011 ROHM Co., Ltd. All rights reserved.
9/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Reference data BU15TD2WNVX (Ta=25℃ unless otherwise specified.)
STBY=0→1.5V
2.0
1.0
0.0
Output Voltage (V)
STBY Voltage (V)
2.0
1.0
0.0
Fig.49. Start Up Time
Iout=0mA
VIN=STBY=0→2.5V
2.0
1.0
0.0
Output Voltage (V)
STBY Voltage (V)
4.0
2.0
0.0
Fig.51. Start Up Time
(VIN=STBY) Iout=0mA
STBY=1.5→0V
2.0
1.0
0.0
Output Voltage (V)
STBY Voltage (V)
2.0
1.0
0.0
Fig.53. Discharge Time
Technical Note
STBY=0→1.5V
2.0
1.0
0.0
Output Voltage (V)
Fig.50. Start Up Time
Iout=200mA
VIN=STBY=0→2.5V
2.0
1.0
0.0
Output Voltage (V)
Fig.52. Start Up Time
(VIN=STBY) Iout=200mA
VIN=2.5V→3.5V→2.5V
1.51
1.50
1.49
Output Voltage (V)
1.48
Fig.54. VIN Response
STBY Voltage (V)
2.0
1.0
0.0
STBY Voltage (V)
4.0
2.0
0.0
Input Voltage (V)
4.5
3.5
2.5
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10/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Reference data BU18TD2WNVX (Ta=25℃ unless otherwise specified.)
2.0
Temp=25°C
1.8
1.6
1.4
1.2
1.0
0.8
0.6
Output Voltage (V)
0.4
0.2
0.0
00.511.522.533.544.555.5
Io=0uA
Io=100uA
Io=50mA
Io=200mA
Input Voltage (V)
VIN= STBY
1.85
Temp=25°C
1.84
1.83
1.82
1.81
1.80
1.79
1.78
Output Voltage (V)
1.77
1.76
1.75
1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5
Io=0uA
Io=1 00uA
Io=50mA
Io=200mA
Input Voltage (V)
Fig.55. Output Voltage
Fig.56. Line Regulation
1.6
1.4
1.2
1.0
0.8
0.6
0.4
STBY Pin Curr ent ( uA)
0.2
0.0
00.511.522.5 33.544.555.5
Temp=25°C
Temp=85°C
Temp= -40°C
Input Voltage (V)
100
VIN= 2.8V
STBY=1.5V
80
60
40
Gnd Current (uA)
20
0
0 0.05 0.1 0.15 0.2
Temp=85°C
Temp=-40°C
Temp=25°C
Output Current (A)
Fig.58. VSTBY - ISTBY
Fig.59. IOUT - IGND
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
Output Voltage (V)
0.4
0.2
0.0
VIN=5.5V
0.00.10.20.30.40.50.6
Output Current (mA)
VIN=2.8V
VIN=2.3V
Temp=25°C
STBY=1.5V
2.0
VIN= 3.8V
Io=0mA
1.5
1.0
0.5
Output Voltage (V)
0.0
Temp=25°C
Temp=85°C
0 0.5 1 1.5
STBY Voltage (V )
Fig.61. OCP Threshold
Fig.62. STBY Threshold
60
VIN= 2.8V
STBY=1.5V
50
Io=0mA
40
30
20
Gnd Current (uA)
10
0
-40 -15 10 35 60 85
Temp ( °C)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
Gnd Current (uA)
0.2
0.1
0.0
-40 -15 10 35 60 85
Temp ( °C)
Fig.64. IGND - Temp Fig.65. IGND - Temp (STBY)
VIN=ST BY
Temp=-40°C
VIN= 2.8V
STBY=0V
Technical Note
100
Io=0uA
80
60
40
Gnd Current (uA)
20
0
00.511.522.533.544.555.5
Fig.57. Circuit Current IGND
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
Output Voltage (V)
1.77
1.76
1.75
0 0.05 0.1 0.15 0.2
Fig.60. Load Regulation
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
Output Voltage (V)
1.77
1.76
1.75
-40 -15 10 35 60 85
Input Voltage (V)
Temp= 25°C
Temp=85°C
Temp=-40°C
Output Current (A)
Temp ( °C)
Fig.63. VOUT - Temp
VIN= STBY
Temp= 85°C
Temp= 25°C
Temp= -40°C
VIN= 2.8V
STBY=1.5V
VIN= 2.8V
STBY=1.5V
Io=0.1mA
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© 2011 ROHM Co., Ltd. All rights reserved.
11/41
2011.07 - Rev.C
BU□□TD2WNVX series
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
p
g
(
)
●Reference data BU18TD2WNVX (Ta=25℃ unless otherwise specified.)
V
e
ut Volta
Out
IOUT=0mA→50mA
1.85
1.80
1.75
1.70
Output Current (mA)
100
50
0
Fig.66. Load Response
V
e
ut Volta
Out
IOUT=0mA→100mA
1.85
1.80
1.75
1.70
Output Current (mA)
100
50
0
Fig.68. Load Response
V
e
ut Volta
Out
1.90
1.80
1.70
1.60
IOUT=0mA→200mA
Output Current (mA)
200
100
0
Fig.70. Load Response
IOUT=50mA→100mA
V
e
ut Volta
Out
1.90
1.80
1.70
1.60
Output Current (mA)
100
50
0
Fig.72. Load Response
Technical Note
IOUT=50mA→0mA
1.90
V
e
1.85
1.80
ut Volta
Out
1.75
VIN=2.8V
STBY=1.5V
COUT=0.47uF
Fig.67. Load Response
IOUT=100mA→0mA
1.90
V
e
1.85
1.80
ut Volta
Out
1.75
VIN=2.8V
STBY=1.5V
COUT=0.47uF
Fig.69. Load Response
IOUT=200mA→0mA
2.00
V
e
1.90
1.80
ut Volta
Out
1.70
VIN=2.8V
STBY=1.5V
COUT=0.47uF
Fig.71. Load Response
IOUT=100mA→50mA
1.85
V
e
1.80
1.75
ut Volta
Out
1.70
Fig.73. Load Response
VIN=2.8V
STBY=1.5V
COUT=0.47uF
Output Current (mA)
100
50
0
Output Current (mA)
100
50
0
Output Current (mA)
200
100
0
Output Current (mA)
100
50
0
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© 2011 ROHM Co., Ltd. All rights reserved.
12/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Reference data BU18TD2WNVX (Ta=25℃ unless otherwise specified.)
STBY=0→1.5V
2.0
1.0
0.0
Output Voltage (V)
STBY Voltage (V)
2.0
1.0
0.0
Fig.74. Start Up Time
Iout=0mA
VIN=STBY=0→2.8V
STBY Voltage (V)
4.0
2.0
0.0
2.0
1.0
0.0
Output Voltage (V)
2.0
1.0
0.0
Output Voltage (V)
Fig.76. Start Up Time
(VIN=STBY) Iout=0mA
Iout=0mA
STBY=1.5→0V
STBY Voltage (V)
2.0
1.0
0.0
Fig.78. Discharge Time
Technical Note
STBY=0→1.5V
2.0
1.0
0.0
Output Voltage (V)
Fig.75. Start Up Time
Iout=200mA
VIN=STBY=2.8→0V
2.0
1.0
0.0
Output Voltage (V)
Fig.77. Start Up Time
(VIN=STBY) Iout=200mA
VIN=2.8V→3.8V→2.8V
1.81
1.80
1.79
Output Voltage (V)
1.78
Fig.79. VIN Response
STBY Voltage (V)
2.0
1.0
0.0
STBY Voltage (V)
4.0
2.0
0.0
Input Voltage (V)
4.8
3.8
2.8
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© 2011 ROHM Co., Ltd. All rights reserved.
13/41
2011.07 - Rev.C
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