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BU6655NUX
Technical data
22 pgs1.22 Mb0

ROHM BU6655NUX Technical data

CMOS LDO Regulators for Portable Equipments
3ch CMOS LDO Regulators
●Description
BU6650NUX, BU6651NUX, BU6652NUX, BU6653NUX, BU6654NUX, BU6655NUX are high-performance 3ch FULL CMOS regulator with 200-mA outputs, which is mounted on small package VSON008X2030(2.0 mm 3.0 mm 0.6 mm). It has excellent noise characteristics and load responsiveness characteristics despite its low circuit current consumption of 120 A. It is most appropriate for various applications such as power supplies for logic IC, RF, and camera modules.
●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, VOUT≦1.8 V)
3) Compatible with small ceramic capacitor (CIN=2.2F, Co=1.0 F)
4) Low current consumption: 120 A
5) ON/OFF control pin (STBY) of output voltage
6) With built-in over current protection circuit and thermal shutdown circuit
7) With built-in output discharge circuit
8) Adopting small package VSON008X2030
●Applications
Battery-powered portable equipment, etc.
●Line up matrix
■ 200 mA BU665□NUX Series
Product Name VOUT1 VOUT2 VOUT3 Package
BU6650NUX 2.8V 2.8V 1.8V
BU6651NUX 2.8V 1.8V 1.5V
BU6652NUX 2.8V 2.8V 1.5V
BU6653NUX 2.8V 1.8V 1.8V
BU6654NUX 3.3V 1.8V 1.5V
BU6655NUX 3.3V 2.8V 1.8V
VSON008X2030
No.11020EFT06
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.09 - Rev.F
BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX
Technical Note
●Absolute maximum rating
Parameter Symbol Ratings Unit
Maximum applied power voltage VMAX -0.3 ~ +6.0 V
Power dissipation Pd 660*1 MW
Maximum junction temperature TjMAX +125 °C
Operational temperature range Topr -40 ~ +85 °C
Storage temperature range Tstg -55 ~ +125 °C
*1 PCB (70 mm 70 mm, thickness 1.6-mm glass epoxy) a standard ROHM board is implemented. Reduced to 6.6 mW/C when used at Ta=25C or higher.
●Recommended operating range (Do not exceed Pd.)
Parameter Symbol Ratings Unit
Input power supply voltage VIN 2.5 ~ 5.5 V
Maximum output current IMAX 200 mA
●Recommended operating conditions
Parameter Symbol
Input capacitor CIN 1.0*
Output capacitor CO 0.5*
*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.
Ratings
Min. Typ. Max.
2
2.2 － μF A ceramic capacitor is recommended.
2
1.0 － μF A ceramic capacitor is recommended.
Unit Conditions
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.09 - Rev.F
BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX
●Electrical characteristics
(Ta=25C, VIN=VOUT+1.0 V (VIN=3.5 V on VOUT=1.8 V and1.5 V products), STBY=1.5 V, CIN=2.2 F, C O=1.0 F, unless otherwise specified)
Limits
Parameter Symbol
Min. Typ. Max.
Unit Conditions
Technical Note
VOUT
Output voltage VOUT
IIN1 - 40 95 μA
Operating current
Circuit current (at STBY) ISTBY - - 1 μA STBY=0 V
Ripple rejection RR 55
Input / Output voltage difference
Line regulation VDL - 2 20 mV
IIN2 - 80 190 μA
IIN3 - 120 285 μA
VSAT
×0.99
VOUT
-25mV
- 360 720
- 300 600
- 220 460
VOUT
70
65
VOUT
×1.01
VOUT
+25mV
- dB
V
mV
IOUT=10 μA, VOUT≥2.5 V
IOUT=10 μA, VOUT<2.5 V
IOUT=0mA STBY×1=1.5V, STBY×2=0V
IOUT=0mA STBY×2=1.5V, STBY×1=0V
IOUT=0mA STBY×3=1.5V
VRR=-20dBv, fRR=1kHz, IOUT=10 mA
1.5 V≦VOUT≦1.8 V VRR=-20dBv, fRR=1 kHz, IOUT=10 mA
2.5 V≦VOUT VOUT=2.8V
(VIN=0.98*VOUT, IOUT=200 mA) VOUT=3.3V
(VIN=0.98*VOUT, IOUT=200 mA) VOUT=3.3V
(VIN=0.98*VOUT, IOUT=150 mA) VIN=VOUT+1.0 V to 5.5 V,
IOUT=10 μA
Load regulation VDLO - 10 80 mV IOUT=0.01 mA to 100 mA
Over current protection detection current
Output short-circuit current ISHORT 20 70 150 mA Vo=0 V
Output discharge resistance RDSC 20 50 80 Ω VIN=4.0 V, STBY=0 V
Standby pull down resistance RSTB 500 1000 2000 kΩ
ON VSTBH 1.5 - 5.5 V Output Voltage ON
Control Voltage
OFF VSTBL -0.3 - 0.3 V Output Voltage OFF
* This product does not have radiation-proof design.
ILMAX 220 350 700 mA Vo=VOUT*0.8
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.09 - Rev.F
BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX
●Block diagram, recommended circuit diagram, and package dimensions (VSON008X2030)
VIN
CIN
STBY1
VREF
STBY
OCP
Device Mark a
VOUT1
COUT
Lot No.
STBY2
VREF
VOUT2
STBY
COUT
OCP
STBY3
VREF
VOUT3
STBY
COUT
OCP
Fig.1 Block diagram
Technical Note
Fig.2 Package dimensions
●Pin configuration diagram
PIN No. PIN NAME DESCRIPTION
1 VIN INPUT Pin
2 STBY1
3 STBY2
4 STBY3
OUTPUT1 CONTROL Pin
( High : ON, Low : OFF )
OUTPUT2 CONTROL Pin
( High : ON, Low : OFF )
OUTPUT3 CONTROL Pin
( High : ON, Low : OFF )
Series Name Device Mark a
BU6650NUX U 6 6 5 0 BU6651NUX U 6 6 5 1 BU6652NUX U 6 6 5 2 BU6653NUX U 6 6 5 3 BU6654NUX U 6 6 5 4 BU6655NUX U 6 6 5 5
Device Mark
5 GND GROUND Pin 6 VOUT3 OUTPUT3 Pin
7 VOUT2 OUTPUT2 Pin 8 VOUT1 OUTPUT1 Pin
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.09 - Rev.F
BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX
●Input/Output terminal equivalent circuit schematic
6,7,8pin (VOUT) 5pin (GND) 2,3,4pin (STBY) 1pin (VIN)
IN
V
VIN
VOUT
STBY
Fig.3 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.
Capacity value of ceramic capacitor - DC bias characteristics
10
0
-10
-20
-30
-40
-50
-60
-70
Capacitance Change [%]
-80
-90
-100
10-V wi thstand volt age F char acter isti cs
00.511.5 22.533.54
Example
(
DC Bias Voltage [V]
Fig.4 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
10
ESR [Ω]
0.1
0.01
Unstable area
1
0 50 100 150 200
Stability area
IOUT [ mA]
Technical Note
)
10-V withstand voltag e B1char acter ist ics GRM 188B11A105KA61 D
10-V wi thstand vol tage B characteristics
6.3-V withst and voltage B char acteri sti cs
10-V withstand voltag e F char acter isti cs
4-V withstand voltag e X6S characteristi cs
Fig.5 Stability area characteristics (Example)
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.09 - Rev.F
BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX
●Reference data total device (Ta=25ºC unless otherwise specified.)
Technical Note
50.00
40.00
30.00
20.00
Input Current (uA)
10.00
0.00
-40 -15 10 35 60 85
Temp ( °C)
Fig. 6 Iin1 vs. Temp
100.00
80.00
60.00
40.00
Input Current (uA)
20.00
0.00
-40 -15 10 35 60 85
Temp ( °C)
Fig. 7 Iin2 vs. Temp
1.000
0.900
0.800
0.700
0.600
0.500
0.400
0.300
0.200
Gnd Current (uA)
0.100
0.000
-0.1 00
-40 -15 10 35 60 85
Temp. (° C)
Fig. 9 Istby vs Temp (STBY)
VIN= 3.8V STBY=0V
3.50
VIN= 3.8V
3.00
2.50
2.00
1.50
1.00
Output Voltage (V)
0.50
0.00
00.511.5
Temp.= 85°C Temp.= 25°C Temp.= -40°C
STBY Voltage (V)
Fig. 10 STBY Threshold
●Reference data Vo=3.3V (Ta=25ºC unless otherwise specified.)
3.5
3.0
2.5
2.0
1.5
1.0
Output Voltage (V)
0.5
0.0
00.511.522.533.544.555.5
Fig. 11 Output Voltage
Vin V oltage (V)
IO=0uA IO=100uA IO=50mA IO=200mA
Temp.=25°C VIN = STBY
3.35
3.34
3.33
3.32
3.31
3.30
3.29
3.28
Output Voltage (V)
3.27
3.26
3.25
3.2 3.3 3.4 3.5 3.6 3.7
Vin V oltage (V)
Fig. 12 Line Regulation
IO=0uA IO=100uA IO=50mA IO=200mA
Temp=25°C VIN = STBY
150.00
120.00
90.00
60.00
Input C ur rent (u A)
30.00
0.00
-40 -15 10 35 60 85
Temp ( °C)
Fig. 8 Iin3 vs. Temp
100
80
60
40
Gnd Cur rent (uA)
20
0
00.511.522.533.544.555.5
Temp.=-40°C Temp.=25°C Temp.=85°C
Vin V oltage (V )
Fig. 13 Circuit Current IGND
IO=0uA
VIN = STBY
0.35
0.30
0.25
0.20
0.15
Temp.=-40°C
0.10
Dropout Voltage (V)
0.05
0.00
0 0.05 0.1 0.15 0.2
Temp.=25°C
Temp.=85°C
VIN=0.98 x VOUT
STBY = 1.5V
Output Current (A)
Fig. 14 Dropout Voltage
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© 2011 ROHM Co., Ltd. All rights reserved.
10
8
6
4
STBY C urr ent (uA)
2
0
00.51 1.522.533.54 4.555.5
Temp.=-40°C
V
STBY
Temp.=85°C
Temp.=25°C
VIN = STBY
Voltage (V )
Fig. 15 STBY Input Current Fig. 16 IOUT - IGND
120
110
100
90
80
70
60
Gnd Cur rent (uA)
50
40
0 0.05 0.1 0.15 0.2
Temp.=85°C
Temp.=25°C
Temp.=-40°C
Output Current (A )
2011.09 - Rev.F
VIN = 4.3V
STBY = 1.5V
BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX
Technical Note
3.35
3.34
3.33
3.32
3.31
3.30
3.29
3.28
Output Voltage (V)
3.27
3.26
3.25
0 0.05 0.1 0.15 0.2
Temp.=25°C
Temp.=85°C
Temp.=-40°C
VIN = 4.3V
STBY = 1.5V
3.50
3.00
2.50
2.00
1.50
1.00
Output Voltage (V)
0.50
0.00
0 0.1 0.2 0.3 0.4 0.5 0.6
Output Current (A)
Fig. 17 Load Regulation Fig. 19 STBY Threshold Fig. 18 OCP Threshold
3.35
3.34
3.33
3.32
3.31
3.30
3.29
3.28
Output Voltage (V)
3.27
3.26
3.25
-40 -15 10 35 60 85
Temp. ( °C)
VIN= 4.3V
STBY=1.5V
Io=0.1mA
50.00
40.00
30.00
20.00
Gnd Cur rent (uA)
10.00
0.00
-40 -15 10 35 60 85
VIN=5.5V
Output Current (A )
Temp. ( °C)
VIN=3.8V
VIN=4.3V
STBY = 1.5V
Temp=25
VIN=4. 3V
STBY=1.5V
Io=0mA
3.50
VIN= 4.3V
3.00
2.50
2.00
1.50
1.00
Output Voltage (V)
℃
0.50
0.00
00.511.5
Temp.=85°C Temp.=25°C Temp.=-40°C
STBY V oltage (V)
1.000
0.900
0.800
0.700
0.600
0.500
0.400
0.300
0.200
Gnd Cur rent (uA)
0.100
0.000
-0.1 00
-40 -15 10 35 60 85
VIN= 4.3V STBY=0V
Temp. ( °C)
80
70
60
50
40
30
20
Ripple Rejection (dB)
10
Vin= 4.3V Io=10mA Ta = 2 5℃
0
0.1 1 10 100 1000
Frequency (kHz)
Fig. 23 Ripple Rejection VS Freq.
80
f=0.1kHz
f=10kHz
f=100kHz
f=1kHz
Co= 1.0 μF Cin=none Iout=10mA temp=25℃
70
60
50
40
30
20
Ripple Rejection [dB]
10
0
3.3 4.3 5.3 Input Vo ltage VIN[V]
Fig. 24 Ripple Rejection VS VIN
Fig. 22 IGND vs Temp (STBY) Fig. 21 IGND vs Temp Fig. 20 VOUT vs Temp
1.8
1.6
1.4
1.2
Co=1.0μF Cin=1.0μF Iout=10mA temp=25℃
1
0.8
0.6
0.4
0.2
Ou tput Noise Density [μV /√ H z]
0
0.1 1 10 100 Frequency f [kHz]
Fig. 25 Output Noise Spectral
Density VS Freq.
Fig. 26 Load Response
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Fig. 27 Load Response
2011.09 - Rev.F
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