Document
Datasheet
CMOS LDO Regulator Series for Portable Equipments
Versatile Package FULL CMOS LDO Regulator
BUxxUC3WG series
●General Description BUxxUC3WG series is high-performance FULL CMOS regulator with 300-mA output, which is mounted on versatile package SSOP5 (2.9 mm × 2.8 mm × 1.25 mm). It has excellent noise characteristics and load responsiveness characteristics despite its low circuit current consumption of 50μA. It is most appropriate for various applications such as power supplies for logic IC, RF, and camera modules ROHM’s.
●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 Package SSOP5 is similar to SOT-23-5 (JEDEC) Low dropout voltage
●Key Specifications Output voltage: Accuracy output voltage: Low current consumption:
Operating temperature range:
1.0V to 4.0V ±1.0% (±25mV)
50μA
-40°C to +85°C
●Applications Battery-powered portable equipment, etc.
●Package SSOP5:
2.90mm x 2.80mm x 1.25mm
●Typical Application Circuit
STBY VIN
STBY VIN
VOUT
VOUT
GND GND GND
Figure 1. Application Circuit
○Product structure:Silicon monolithic integrated circuit www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・14・001
○This product is not designed for protection against radioactive rays
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TSZ02201-0RBR0A300110-1-2 02.Jul.2013 Rev.002
BUxxUC3WG series
●Connection Diagram
SSOP5 VOUT
N.C.
Datasheet
Marking
Lot. No
VIN GND STBY TOP VIEW
●Pin Descriptions
PIN No. 1 2
3
4 5
Symbol VIN GND
STBY
N.C. VOUT
SSOP5 Function
Power Supply Voltage Grounding
ON/OFF control of output voltage (High: ON, Low: OFF)
Unconnected Terminal Output Voltage
●Ordering Information
B U x x U C3 W G -
x
x
Part Number
SSOP5
Output Voltage 10 : 1.0V
40 : 4.0V
Low Dropout Voltage Maximum Output Current 300mA
with switch
Package G : SSOP5
2.9±0.2 54
4°
+6° −4°
Packageing and forming specification Embossed tape and reel TR : The pin number 1 is the upper right TL : The pin number 1 is the lower left
+0.2 −0.1
2.8±0.2
1.6
0.2Min.
1.25Max. 1.1±0.05 0.05±0.05
123
0.13
+0.05 −0.03
+0.05 0.42 −0.04 0.95 0.1
(Unit : mm)
www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001
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TSZ02201-0RBR0A300110-1-2 02.Jul.2013 Rev.002
BUxxUC3WG series
Datasheet
●Lineup
Marking
Output Voltage Part Number
Q0
1.0V
BU10
Q7 1.5V BU15
TBD(*)
1.55V BU1F
Q1
1.05V
BU1A
Q2
1.1V
BU11
Q3
1.15V
BU1B
Q4
1.2V
BU12
TBD(*)
1.6V BU16
TBD(*)
1.65V BU1G
TBD(*)
1.7V BU17
TBD(*)
1.75V BU1H
Q5
1.25V
BU1C
Q8 1.8V BU18
Q6
1.3V
BU13
TBD(*)
1.35V
BU1D
TBD(*)
1.4V
BU14
TBD(*)
1.45V
BU1E
Q9 1.85V BU1J
R0 1.9V BU19
TBD(*)
1.95V BU1K
R1 2.0V BU20
R2 2.05V BU2A
R7 2.6V BU26
R3 2.1V BU21
TBD(*)
2.65V BU2G
TBD(*)
2.15V BU2B
R8
2.7V BU27
R4
2.2V BU22
R9
2.75V BU2H
TBD(*)
2.25V BU2C
Y0
2.8V BU28
R5 2.3V BU23
Y1
2.85V BU2J
TBD(*)
2.35V BU2D
Y2
2.9V BU29
TBD(*)
2.4V BU24
Y3
2.95V BU2K
TBD(*)
2.45V BU2E
Y4
3.0V BU30
R6 2.5V BU25
TBD(*)
3.05V BU3A
TBD(*)
2.55V BU2F
Y5
3.1V BU31
TBD(*)
3.15V BU3B
Y9 3.7V BU37
Y6
3.2V BU32
TBD(*)
3.75V BU3H
TBD(*)
3.25V BU3C
TBD(*)
3.8V BU38
Y7 3.3V BU33
TBD(*)
3.35V BU3D
TBD(*)
3.85V BU3J
TBD(*)
3.9V BU39
Y8
3.4V BU34
TBD(*)
3.95V BU3K
TBD(*)
3.45V BU3E
TBD(*)
3.5V BU35
TBD(*)
3.55V BU3F
TBD(*)
3.6V BU36
TBD(*)
4.0V BU40
(*)Under development
TBD(*)
3.65V BU3G
●Absolute Maximum Ratings (Ta=25°C) PARAMETER
Power Supply Voltage Power Dissipation Maximum junction temperature Operating Temperature Range Storage Temperature Range
Symbol VMAX Pd TjMAX Topr Tstg
Limit -0.3 ~ +6.0
540(*1) +125
-40 ~ +85 -55 ~ +125
Unit V
mW ℃ ℃ ℃
(*1)Pd deleted at 5.4mW/℃ at temperatures above Ta=25℃, mounted on 70×70×1.6 mm glass-epoxy PCB.
●RECOMMENDED OPERATING RANGE (not to exceed Pd)
PARAMETER
Symbol
Limit
Power Supply Voltage
VIN 1.7~5.5
Maximum Output Current
IMAX
300
Unit V mA
●OPERATING CONDITIONS
PARAMETER Symbol MIN.
TYP.
MAX.
Unit
CONDITION
Input Capacitor
Cin 0.47(*2)
Output Capacitor Co 0.47(*2)
1.0 1.0
- μF Ceramic capacitor - μF recommended
(*2)Make sure that the output capacitor value is not kept lower than this specified level across a variety of temperature, DC bias, changing as time progresses characteristic.
www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001
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TSZ02201-0RBR0A300110-1-2 02.Jul.2013 Rev.002
BUxxUC3WG series
Datasheet
●Electrical Characteristics (Ta=25℃, VIN=VOUT+1.0V (*3), STBY=VIN, Cin=1.0μF, Co=1.0μF, unless otherwise noted.)
PARAMETER Overall Device
Symbol
MIN.
Limit TYP.
MAX.
Unit
Conditions
Output Voltage
VOUT
VOUT×0.99
VOUT×1.01
VOUT
VOUT-25mV
VOUT+25mV
V
IOUT=10μA,VOUT≧2.5V IOUT=10μA,VOUT<2.5V
Operating Current Operating Current (STBY)
Ripple Rejection Ratio
IIN ISTBY
RR
45
-
50 90 μA IOUT=0mA
- 1..