CMOS LDO Regulators for Portable Equipments
1ch 200mA
CMOS LDO Regulators
BUTA2WNVX series, BUTA2WHFV series
No.11020ECT01
●Description
BU□□TA2WNVX /HFV series is high-performance FULL CMOS regulator with 200-mA output, which is mounted on
microminiature package SSON004X1216 (1.2 mm
1.6 mm
0.6 mm) &HVSOF5(1.6mm
1.6mm
0.6mm). It has
excellent noise characteristics and load responsiveness characteristics despite its low circuit current consumption of 40 µA.
It is most appropriate for various applications such as power supplies for logic IC, RF, and camera modules.
Microminiature package SSON004X1216 & HVSOF5 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 1.5-V & 1.8-V products）
2) High ripple rejection: 70 dB (Typ., 1 kHz, VOUT1.8 V))
3) Compatible with small ceramic capacitor (C
IN
=Co=1.0 µF)
4) Low current consumption: 40 µA
5) ON/OFF control of output voltage
6) With built-in overcurrent protection circuit and overheat protection circuit
7) With built-in output discharge circuit
8) Adopting microminiature power package SSON004X1216
●Applications
Battery-powered portable equipment, etc.
●Line
up
■
200 mA BU□□TA2WNVX / HFV series
Product Name
BU□□TA2WNVX
BU□□TA2WHFV
1.5
○
○
1.8
○
○
2.5
○
○
2.6
○
○
2.7
○
○
2.8 2.85 2.9
○
○
○
○
○
○
3.0
○
○
3.1
○
○
3.2
○
○
3.3
○
○
3.4
○
○
Package
SSON004X1216
HVSOF5
Model name: BH□□TA2W□□□
a
b
Symbol
Contents
Specification of output voltage
□□
15
a
18
25
26
27
b
Package
Output voltage (V)
1.5V(Typ.)
1.8V(Typ.)
2.5V(Typ.)
2.6V(Typ.)
2.7V(Typ.)
□□
28
2J
29
30
31
NVX :SSON004X1216
HFV :HVSOF5
Output voltage (V)
2.8V(Typ.)
2.85V(Typ.)
2.9V(Typ.)
3.0V(Typ.)
3.1V(Typ.)
□□
32
33
34
-
-
Output voltage (V)
3.2V(Typ.)
3.3V(Typ.)
3.4V(Typ.)
-
-
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© 2011 ROHM Co., Ltd. All rights reserved.
1/29
2011.01 - Rev.C
BUTA2WNVX series, BUTA2WHFV series
●Absolute
maximum rating
Parameter
Symbol
Ratings
-0.3 ~
+6.5
Unit
V
mW
℃
+85
+125
℃
℃
Technical Note
Maximum applied power voltage VMAX
Power dissipation
Maximum junction temperature
Operational temperature range
Storage temperature range
*1
*2
Pd1
Pd2
TjMAX
Topr
Tstg
220*
1
(SSON004X1216)
410*
2
(HVSOF5)
+125
-40 ~
-55 ~
When 1 PCB (70 mm
70 mm, thickness 1.6-mm glass epoxy) a standard ROHM board is implemented.
Reduced to 2.2 mW/C when used at Ta=25C or higher.
When 1 PCB (70 mm
70 mm, thickness 1.6-mm glass epoxy) a standard ROHM board is implemented.
Reduced to 4.1 mW/C when used at Ta=25C or higher.
●Recommended
operating range (Do not exceed Pd.)
Parameter
Input power supply voltage
Maximum output current
Symbol
VIN
IMAX
Ratings
2.5 ~
200
5.5
Unit
V
mA
●Recommended
operating conditions
Parameter
Input capacitor
Output capacitor
*3
Symbol
C
IN
C
O
Ratings
Min.
0.5*
3
0.5*
3
Typ.
1.0
1.0
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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© 2011 ROHM Co., Ltd. All rights reserved.
2/29
2011.01 - Rev.C
BUTA2WNVX series, BUTA2WHFV series
●Electrical
characteristics
(Unless otherwise specified
Parameter
Technical Note
Ta=25℃, VIN=VOUT+1.0 V (VIN=3.5 V on VOUT=1.8-V and1.5-V products)
,
STBY=1.5 V, C
IN
=1.0 µF, C
O
=1.0 µF)
Limits
Symbol
Unit
Conditions
Min.
Typ.
Max.
VOUT
×0.99
VOUT
×1.01
VOUT
VOUT
-25 mV
VOUT
+25 mV
IOUT=10
μA,
VOUT<2.5 V
V
IOUT=10
μA,
VOUT≥2.5 V
Output voltage
VOUT
Circuit current
Circuit current (at STBY)
IIN
ISTBY
-
-
40
-
70
95
1
μA
μA
IOUT=0mA
STBY=0 V
VRR=-20 dBv, fRR=1 kHz,
IOUT=10 mA, 1.5 V≤VOUT≤1.8 V
Ripple rejection
RR
55
65
-
-
400
360
330
300
2
10
400
70
40
1000
-
-
-
dB
VRR=-20 dBv,fRR=1 kHz,
IOUT=10 mA, 2.5 V≤VOUT
800
720
660
600
20
80
700
150
80
2000
5.5
0.3
mV
mV
mV
mV
mV
mV
mA
mA
Ω
kΩ
V
V
2.5 V≤VOUT≤2.6 V
(VIN=0.98*VOUT, IOUT=200 mA)
2.7 V≤VOUT≤2.85 V
(VIN=0.98*VOUT, IOUT=200 mA)
2.9 V≤VOUT≤3.1 V
(VIN=0.98*VOUT,IOUT=200 mA)
3.2 V≤VOUT≤3.4 V
(VIN=0.98*VOUT, IOUT=200 mA)
VIN=VOUT+1.0 V to 5.5 V,
IOUT=10
μA
IOUT=0.01 mA to 100 mA
Vo=VOUT*0.8
Vo=0 V
VIN=4.0 V, STBY=0 V
Input/Output voltage difference
VSAT
-
-
Line regulation
Load regulation
VDL
VDLO
-
-
250
20
20
500
1.5
-0.3
Overcurrent protection detection
ILMAX
current
Output short-circuit current
Output discharge resistance
Standby pull-down resistance
Standby control
ON
OFF
ISHORT
RDSC
RSTB
VSTBH
VSTBL
* This product does not have radiation-proof design.
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© 2011 ROHM Co., Ltd. All rights reserved.
3/29
2011.01 - Rev.C
BUTA2WNVX series, BUTA2WHFV series
●Block
diagram, recommended circuit diagram, and pin configuration diagram
BH□□TA2WNVX
VIN
Technical Note
VIN
4/3
VREF
Cin
1
1/4
2
GND
VOUT
VOUT
OCP
Co
VSTB Y
STBY
3/1
STBY
Discharge
Recommended ceramic capacitor for Cin & Co
Murata Manufacturing Co., Ltd.
GRM188B11A105KA61D
Fig.1 Recommended circuit diagram
BU□□TA2WNVX(SSON004X1216)
4
3
PIN No.
1
2
3
Symbol
VOUT
GND
STBY
VIN
Function
Voltage output
Grounding
ON/OFF control of output voltage
(High: ON, Low: OFF)
Power input
1
2
4
BU□□TA2WHFV(HVSOF5)
5
4
PIN No.
1
2
3
Symbol
STBY
GND
VIN
VOUT
N.C.
Function
ON/OFF control of output voltage
(High:ON, Low:OFF)
Grounding
Power input
Voltage output
No Connect
1
2
3
4
5
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© 2011 ROHM Co., Ltd. All rights reserved.
4/29
2011.01 - Rev.C
BU
TA2WNVX series, BU
TA2WHFV series
●Input/Output
terminal equivalent circuit schematic
1pin (VOUT)
2pin (GND)
V
IN
Technical Note
3pin (STBY)
V
IN
4pin (VIN)
VOUT
STBY
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.
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
●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.
100
Unstable area
ESR [Ω]
10
1
0.1
0.01
0
50
100
IOUT [mA]
150
200
Stability area
Fig.4 Stability area characteristics (Example)
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© 2011 ROHM Co., Ltd. All rights reserved.
5/29
2011.01 - Rev.C
Analog electronics
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