Datasheet
CMOS LDO Regulator Series for Portable Equipments
Versatile Package
FULL CMOS LDO Regulator
BUxxUA3WNVX series
●General
Description
BUxxUA3WNVX series is high-performance FULL
CMOS regulator with 300-mA output, which is mounted
on versatile package SSON004X1010 (1.00mm
1.00
mm
0.60mm). It has excellent noise characteristics and
load responsiveness characteristics despite its low circuit
current consumption of 50A. It is most appropriate for
various applications such as power supplies for logic IC,
RF, and camera modules.
●Features
High accuracy detection
low current consumption
Compatible with small ceramic capacitor (Cin=Co=1.0uF)
With built-in output discharge circuit
High ripple rejection
ON/OFF control of output voltage
With built-in over current protection circuit
and thermal shutdown circuit
Low dropout voltage
●Key
Specifications
Output voltage:
Accuracy output voltage:
Low current consumption:
Operating temperature range:
1.0V to 3.7V
±1.0% (±25mV)
50μA
-40°C to +85°C
●Applications
Battery-powered portable equipment, etc.
●Package
SSON004X1010 :
1.00mm x 1.00mm x 0.60mm
●Typical
Application Circuit
STBY
VIN
STBY
VIN
VOUT
VOUT
GND
GND
GND
Figure 1. Application Circuit
○Product
structure：Silicon monolithic integrated circuit
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This
product is not designed for protection against radioactive rays
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TSZ02201-0GBG0A300010-1-2
30.Oct.2015 Rev.008
BUxxUA3WNVX series
●Connection
Diagram
SSON004X1010
TOP VIEW
4 VIN
3 STBY
LOT Number
Datasheet
BOTTOM VIEW
1 VOUT
2 GND
reverse FIN
1
1 VOUT
2
Part Number Marking
2 GND
1PIN MARK
4 VIN
3 STBY
●Pin
Descriptions
PIN No.
1
2
3
4
reverse
SSON004X1010
Symbol
Function
VOUT
Output Voltage
GND
Grouding
ON/OFF control of output voltage
STBY
(High: ON, Low: OFF)
VIN
Power Supply Voltage
FIN
Substrate (Connect to GND)
●
Ordering Information
B
Part
Number
U
x
x
U
A
3
W
N
V
X
-
T
L
Output Voltage
10 : 1.0V
37 : 3.7V
Low Dropout Voltage
Maximum Output Current
300mA
with
Package
output discharge NVX : SSON004X1010
Packageing and forming specification
Embossed tape and reel
TL : The pin number 1 is the lower left
SSON004X1010
1.0±0.1
1.0±0.1
<Tape and Reel information>
Tape
Quantity
S
+0.03
0.02
−0.02
(0.12)
1PIN MARK
Embossed carrier tape
5000pcs
TL
The direction is the 1pin of product is at the lower left when you hold
0.6MAX
Direction
of feed
0.05
(
reel on the left hand and you pull out the tape on the left hand
)
0.32±0.1
±
48
0.
05
0.
0.65±0.05 3-C0.18
R0.05
1
2
45º
0.07±0.1
0.25±0.1
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
0.
48
4
3
5
.0
±
0
0.25±0.05
1pin
Direction of feed
(Unit : mm)
Reel
∗
Order quantity needs to be multiple of the minimum quantity.
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BUxxUA3WNVX series
●Lineup
Marking
Output
Voltage
Part
Number
dl
1.9V
BU19
z
2.85V
BU2J
Datasheet
e
1.0V
BU10
el
2.0V
BU20
u
2.9V
BU29
ml
nl
Ul
1.15V
BU1B
rl
Yl
1.2V
BU12
hl
2.3V
BU23
2i
al
1.25V
BU1C
h
2.5V
BU25
y
3.3V
BU33
ql
Bi
1.35V
BU1D
ul
f
1.5V
BU15
yl
g
1.8V
BU18
n
2.8V
BU28
bl
1.85V
BU1J
1.05V
BU1A
fl
2.05V
BU2A
0i
1.1V
BU11
gl
2.1V
BU21
k
3.0V
BU30
1.3V
BU13
m
2.6V
BU26
3i
2.2V
BU22
1i
2.7V
BU27
9
3.7V
BU37
2.75V
BU2H
2.95V
BU2K
3.1V
BU31
3.2V
BU32
3.4V
BU34
●Absolute
Maximum Ratings (Ta=25°C)
PARAMETER
Symbol
VMAX
Pd
TjMAX
Topr
Tstg
Limit
-0.3
½
+125
-40
½
+85
-55
½
+125
+6.0
560(*1)
Unit
V
mW
℃
℃
℃
Power Supply Voltage
Power Dissipation
Maximum junction temperature
Operating Temperature Range
Storage Temperature Range
(*1) Pd deleted at 5.6mW/℃ at temperatures above Ta=25℃, mounted on 70×70×1.6 mm glass-epoxy PCB.
●
RECOMMENDED OPERATING RANGE (not to exceed Pd)
PARAMETER
Power Supply Voltage
Maximum Output Current
Symbol
VIN
IMAX
Limit
1.7½5.5
300
Unit
V
mA
●OPERATING
CONDITIONS
PARAMETER
Input Capacitor
Output Capacitor
Symbol
Cin
Co
MIN.
0.47(*2)
0.47(*2)
TYP.
1.0
1.0
MAX.
-
-
Unit
μF
μF
CONDITION
Ceramic capacitor recommended
(*2) Make sure that the output capacitor value is not kept lower than this specified level across a variety of temperature, DC bias,
characteristic.
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TSZ22111・15・001
3/27
TSZ02201-0GBG0A300010-1-2
30.Oct.2015 Rev.008
BUxxUA3WNVX series
●Electrical
Characteristics
(Ta=25℃, VIN=VOUT+1.0V (*3), STBY=VIN, Cin=1.0μF, Co=1.0μF, unless otherwise noted.)
PARAMETER
Overall Device
Output Voltage
Operating Current
Operating Current (STBY)
Ripple Rejection Ratio
VOUT
IIN
ISTBY
RR
VOUT×0.99
VOUT-25mV
-
-
45
-
-
Dropout Voltage
VSAT
-
-
-
-
Line Regulation
VDL
-
-
370
50
20
0.1
1.2
-0.3
Load Regulation
VDLO
Over-current Protection (OCP)
Limit Current
Short Current
Standby Block
Discharge Resistor
STBY Pin Pull-down
Current
STBY Control
Voltage
ON
OFF
RDSC
ISTB
VSTBH
VSTBL
50
0.9
-
-
80
8.0
5.5
0.3
Ω
μA
V
V
ILMAX
ISHORT
VOUT
50
-
70
470
350
280
250
220
200
2
25
550
150
VOUT×1.01
VOUT+25mV
90
1.0
-
700
500
380
320
260
220
20
45
-
300
V
μA
μA
dB
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
Symbol
Limit
MIN.
TYP.
MAX.
Unit
Conditions
Datasheet
IOUT=10μA，VOUT≧2.5V
IOUT=10μA，VOUT＜2.5V
IOUT=0mA
STBY=0V
VRR=-20dBv,fRR=1kHz,IOUT=150mA,
VIN=3.6V
1.0V≦VOUT＜1.2V(IOUT=300mA)
1.2V≦VOUT＜1.5V(IOUT=300mA)
1.5V≦VOUT＜1.7V(IOUT=300mA)
1.7V≦VOUT＜2.1V(IOUT=300mA)
2.1V≦VOUT＜2.5V(IOUT=300mA)
2.5V≦VOUT(IOUT=300mA)
VIN=VOUT+1.0V to 5.5V(*4), IOUT=10μA
IOUT=0.01mA to 300mA
Vo=VOUT*0.95
Vo=0V
VIN=5.5V, STBY=0V, VOUT=2.6V
STBY=1.5V
○This
product is not designed for protection against radioactive rays.
(*3) VIN=2.5V for VOUT≦1.5V
(*4) VIN=2.5V to 5.5V for VOUT≦1.5V
●Block
Diagrams
VIN
VIN
4
VREF
Cin
1
VOUT
GND
2
VOUT
OCP
TSD
Co
STBY
STBY
3
STBY
Discharge
Cin½½½1.0μF (Ceramic)
Co
½½½1.0μF
(Ceramic)
Figure 2. Block Diagrams
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/27
TSZ02201-0GBG0A300010-1-2
30.Oct.2015 Rev.008
BUxxUA3WNVX series
●
Reference data
Datasheet
(Ta=25ºC unless otherwise specified.)
BU10UA3WNVX
LINE REGULATION
1.10
1.08
1.06
1.04
LINE REGULATION
Vout=1.0V
Iout=10mA
1.10
1.08
1.06
1.04
Vout=1.0V
Iout=300mA
VOUT[V]
VOUT[V]
85℃
25℃
-40℃
1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2
1.02
1.00
0.98
0.96
0.94
0.92
0.90
1.02
1.00
0.98
0.96
0.94
0.92
0.90
85℃
25℃
-40℃
1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2
VIN[V]
VIN[V]
Figure 3.
Figure 4.
1.10
1.08
1.06
1.04
LOAD REGULATION
Vout=1.0V
1.10
OUTPUT VOLTAGE vs TEMPERATURE
Vout=1.0V
1.05
VOUT[V]
1.00
0.98
0.96
0.94
0.92
0.90
0
50
100
150
200
250
VOUT[V]
1.02
1.00
0.95
85℃
25℃
-40℃
300
10mA
150mA
300mA
0.90
-40
-20
0
IOUT[mA]
Temperature[℃]
20
40
60
80
Figure 5.
Figure 6.
70
65
60
55
50
45
GROUND PIN CURRENT vs INPUT VOLTAGE
Vout=1.0V
450
400
350
300
GROUND PIN CURRENT vs LOAD
Vout=1.0V
IGND[uA]
40
35
30
25
20
15
10
5
0
2.3
2.5
2.7
2.9
3.1
3.3
3.5
IGND[uA]
85℃
25℃
-40℃
250
200
150
100
50
0
0
50
100
150
200
250
85℃
25℃
-40℃
300
VIN[V]
IOUT[mA]
Figure 7.
Figure 8.
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/27
TSZ02201-0GBG0A300010-1-2
30.Oct.2015 Rev.008
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