CMOS LDO Regulators for Portable Equipments
1ch 200mA
CMOS LDO Regulators
BU□□TD2WNVX series
No.11020ECT07
●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
○
BU□□TD2WNVX
2.6
○
1.2
○
2.7
○
1.5
○
2.8
○
1.8
○
2.85
○
1.85
○
2.9
○
1.9
○
3.0
○
2.0
○
3.1
○
2.05
○
3.2
○
2.1
○
3.3
○
2.3
○
3.4
○
2.5
○
SSON004X1010
Package
Model name：BU□□TD2WNVX
a
Symbol
□□
10
12
a
15
18
1J
19
Output voltage
(V)
1.0 V(Typ.)
1.2 V(Typ.)
1.5 V(Typ.)
1.8 V(Typ.)
1.85 V(Typ.)
1.9 V(Typ.)
□□
20
2A
21
23
25
26
Contents
Specification of output voltage
Output voltage
(V)
2.0 V(Typ.)
2.05 V(Typ.)
2.1 V(Typ.)
2.3V(Typ.)
2.5 V(Typ.)
2.6 V(Typ.)
□□
27
28
2J
29
30
31
Output voltage
(V)
2.7 V(Typ.)
2.8 V(Typ.)
2.85 V(Typ.)
2.9 V(Typ.)
3.0 V(Typ.)
3.1 V(Typ.)
□□
32
33
34
Output voltage
(V)
3.2 V(Typ.)
3.3 V(Typ.)
3.4 V(Typ.)
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© 2011 ROHM Co., Ltd. All rights reserved.
1/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Absolute
maximum ratings
Parameter
Maximum applied power voltage
Power dissipation
Maximum junction temperature
Operational temperature range
Storage temperature range
(*1)
Technical Note
Symbol
VMAX
Pd
TjMAX
Topr
Tstg
Ratings
-0.3 ~ +6.5
560
(*1)
+125
-40 ~ +85
-55 ~ +125
Unit
V
mW
℃
℃
℃
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
Input power supply voltage
Maximum output current
Symbol
VIN
IMAX
Ratings
1.7 ~ 5.5
200
Unit
V
mA
●Recommended
operating conditions
Parameter
Input capacitor
Output capacitor
(*2)
Symbol
C
IN
C
O
Ratings
Min.
0.22
(*2)
0.22
(*2)
Typ.
0.47
0.47
Max.
－
－
Unit
µF
µF
Conditions
A ceramic capacitor is recommended.
A ceramic capacitor is recommended.
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.
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2/41
2011.07 - Rev.C
BU□□TD2WNVX series
Technical Note
●Electrical
characteristics(Ta=25℃, VIN=VOUT+1.0V
(*3)
, STBY=VIN, C
IN
=0.47μF, C
O
=0.47μF, unless otherwise noted.)
Parameter
Overall Device
Output Voltage
VOUT
VOUT
×0.99
VOUT
-25mV
-
-
45
-
-
Dropout Voltage
VSAT
-
-
Line Regulation
Load Regulation
Over-current Protection (OCP)
Limit Current
Short Current
Standby Block
Discharge Resistor
STBY Pin Pull-down Current
ON
STBY Control Voltage
Symbol
Limits
Min.
Typ.
Max.
VOUT
×1.01
VOUT
+25mV
60
1.0
-
540
500
460
420
20
80
Unit
Conditions
IOUT=10µA,VOUT≧2.5V
V
IOUT=10µA,VOUT＜2.5V
µA
µA
dB
mV
mV
mV
mV
mV
mV
IOUT=0mA
STBY=0V
VRR=-20dBv,fRR=1kHz,IOUT=10mA
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
IOUT=0.01mA to 100mA
(*4)
VOUT
Operating Current
Operating Current (STBY)
Ripple Rejection Ratio
IIN
ISTBY
RR
35
-
70
280
260
240
220
2
10
VDL
VDLO
-
-
ILMAX
ISHORT
220
20
400
70
700
150
mA
mA
Vo=VOUT*0.95
Vo=0V
RDSC
ISTB
VSTBH
VSTBL
20
0.1
1.2
-0.3
50
0.6
-
-
80
2.0
5.5
0.3
Ω
µA
V
V
VIN=4.0V, STBY=0V, VOUT=4.0V
STBY=1.5V
OFF
* 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
of each Output Voltage
(Ta=25℃, STBY=VIN, C
IN
=0.47μF, Co=0.47μF, unless otherwise noted.)
Parameter
Symbol
Limits
Min.
80
1.2V
200
Maximum
output current
60
200
200
200
-
120
-
-
-
-
-
mA
-
-
-
VIN=2.2V
VIN=2.4V
VIN=2.5V
VIN=2.1V
VIN=1.8V
Typ.
160
Max.
-
Unit
VIN=1.7V
Conditions
1.5V
1.8V
1.9V
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© 2011 ROHM Co., Ltd. All rights reserved.
3/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Block
diagram, recommended circuit diagram, and pin configuration diagram
BU□□TD2WNVX
VIN
VIN
4
Technical Note
Cin
GND
VSTBY
2
VREF
1
VOUT
VOUT
PIN No.
1
Symbol
VOUT
GND
STBY
VIN
Function
Voltage output
Grounding
ON/OFF control of output voltage
(High: ON, Low: OFF)
Power input
OCP
TSD
Co
2
Discharge
STBY
3
STBY
3
4
Recommended ceramic capacitor for Cin & Co
Murata Manufacturing Co., Ltd.
GRM188B11A474KA61D
Fig.1 Recommended circuit diagram
●Input
/ Output terminal equivalent circuit schematic
1pin (VOUT)
2pin (GND)
3pin (STBY)
4pin (VIN)
Fig.2
●About
input/output capacitor
Input/Output equivalent circuit
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
Capacity value of ceramic capacitor - DC bias characteristics
(Example)
10
0
-10
Capacitance Change [%
]
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
0.5
1
1.5
2
2.5
3
3.5
4
10-V withstand voltage
F characteristics
4-V withstand voltage
X6S characteristics
10-V withstand voltage
F characteristics
10-V withstand voltage
B1characteristics
GRM188B11A105KA61D
10-V withstand voltage
B characteristics
6.3-V withstand voltage
B characteristics
DC Bias Voltage [V]
Fig.3 Capacity – bias characteristics
Cout=0.47μF ,C
IN
=0.47μF ,Temp=+25℃
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.
100
Unstable region
10
ESR [Ω]
ESR [Ω]
1
Stable region
0.1
0.01
0
50
100
IOUT [mA]
150
200
Fig.4 Stability area characteristics (Example)
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4/41
2011.07 - Rev.C
BU□□TD2WNVX series
●Reference
data BU12TD2WNVX (Ta=25℃ unless otherwise specified.)
Technical Note
1.4
Temp=25°C
1.2
1.25
1.24
100
Temp=25°C
VIN=STBY
Io=0uA
Output Voltage (V)
Output Voltage (V)
1.0
0.8
0.6
0.4
0.2
0.0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Gnd Current (uA)
1.23
1.22
1.21
1.20
1.19
1.18
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
80
60
Io=0uA
Io=100uA
Io=50mA
Io=200mA
VIN=STBY
Temp=85°
Temp=25°C
Temp=-40°C
Io=0uA
Io=100uA
Io=50mA
Io=200mA
40
20
VIN=STBY
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Input Voltage (V)
Input Voltage (V)
Fig.5. Output Voltage
Fig.6. Line Regulation
Fig.7. Circuit Current IGND
1.6
1.25
100
STBY Pin Current (uA)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
0
0
Output Voltage (V)
Gnd Current (uA)
80
VIN=2.5V
STBY=1.5V
1.24
Temp=85°C
1.23
1.22
1.21
1.20
1.19
1.18
1.17
1.16
1.15
VIN=2.5V
STBY=1.5V
Temp=25°C
Temp=85°C
Temp=85°C
60
40
Temp=-40°C
20
Temp=25°C
Temp=-40°C
Temp=25°C
Temp=-40°C
0.05
0.1
0.15
0.2
0
0.05
0.1
0.15
0.2
Input Voltage (V)
Output Current (A)
Output Current (A)
Fig.8. VSTBY - ISTBY
Fig.9. IOUT - IGND
Fig.10. Load Regulation
1.4
Temp=25°C
1.2
VIN=2.5V
1.5
1.25
VIN=2.5V
Io=0mA
1.24
1.23
VIN=2.5V
STBY=1.5V
Io=0.1mA
Output Voltage (V)
Output Voltage (V)
1.0
0.8
0.6
0.4
0.2
STBY=1.5V
0.0
0
0.1
0.2
0.3
0.4
0.5
0.6
VIN=1.7V
VIN=5.5V
Output Voltage (V)
1.5
1.0
1.22
1.21
1.20
1.19
1.18
1.17
1.16
Temp=25°C
0.5
Temp=85°C
Temp=-40°C
0.0
0
0.5
1
1.15
-40
-15
10
35
60
85
Output Current (A)
STBY Voltage (V)
Temp (°C)
Fig.11. OCP Threshold
Fig.12. STBY Threshold
Fig.13. VOUT - Temp
60
50
VIN=2.5V
STBY=1.5V
Io=0mA
1.0
0.9
Gnd Current (uA)
40
30
20
10
0
-40
Gnd Current (uA)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
VIN=2.5V
STBY=0V
-15
10
35
60
85
-40
-15
10
35
60
85
Temp (°C)
Temp (°C)
Fig.14. IGND vs Temp
Fig.15. IGND - Temp (STBY)
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2011.07 - Rev.C
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