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BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
FEATURES
DESCRIPTION
Ultra-Fast Response in Line/Load
The BL9195 is designed for portable RF and
Transient
wireless applications with demanding perfor
Low Dropout:210mV@300mA
Step-Down
Converter
mance and
space requirements. The BL9195

Wide Operating Voltage Range:2V to 6V
performance is optimized for battery-powered,

Wide Output Voltage Range:1.2V to 5V
systems to deliver ultra low noise and low

Low Temperature Coefficient
quiescent current. Regulator ground current

Current Limiting Protection
increases only slightly in dropout, further

Thermal Shutdown Protection
prolonging the battery life. The BL9195 also

Only 1F Output Capacitor Required for
works with low-ESR ceramic capacitors,
Stability
reducing the amount of board space

High Power Supply Rejection Ratio
necessary for power applications, critical in

Custom Voltage Available
hand-held wireless devices. The other fea
Available in 3-Lead SOT23, SOT89 and
tures include ultra low dropout voltage, high
SOT223 Package
output accuracy, current limiting protection,
and high ripple rejection ratio. Available in 3lead SOT23, SOT89 and SOT223 packages.
APPLICATIONS








Cellular and Smart Phones
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instrument
PCMCIA Cards
MP3/MP4/MP5 Players
Portable Information Appliances
ORDERING INFORMATION
TYPICAL APPLICATION
BL9195 XX X X XXX
BL9195 SOT23-3/SOT89-3/SOT223-3
Package:
RT: SOT23-3
SRT: SOT89-3
TRT: SOT223-3
Output Voltage Accuracy:
A: ±1%
B: ±2%
Output Voltage:
12: 1.2V 13:1.3V 15: 1.5V 18:1.8V
25:2.5V 27:2.7V 28:2.8V 285: 2.85V
30: 3.0V 32:3.2V 33:3.3V 50:5.0V
CT: custom fixed output (50mV step)
PPMIC BU
BL9195 Rev 1.4
11/2012
VIN
VIN
C1
1uF
BL9195
GND
Features:
P: Standard (default, lead free)
C: Customized
G: Green
VOUT
VOUT
C2
1uF
Application hints:
Output capacitor (C2≥2.2uF) is recommended
in BL9195-1.2V, BL9195-1.3V, BL9195-1.5V
and BL9195-1.8V application to assure circuit
stability.
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1
BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
Absolute Maximum Rating
(Note 1)
Input Supply Voltage (VIN)
-0.3V to +6.5V
Output Voltage
-0.3V to VIN+0.3V
Output Current
300mA
Maximum Junction Temperature
125°C
(Note2)
Operating Temperature Range
-40°C to 85°C
Storage Temperature Range
-65°C to 125°C
Lead Temperature (Soldering, 10s)
300°C
Step-Down Converter
Package Information
SOT23-3
TOP VIEW
SOT89-3
TOP VIEW
SOT223-3
TOP VIEW
MARKING
MARKING
,
VIN
3
MARKING
1
1
2
VOUT
GND
Part Number
Top Mark
Top Mark
GAYW
BL9195-1.3V
GBYW
BL9195-1.5V
GCYW
BL9195-1.8V
GDYW
BL9195-2.5V
GEYW
BL9195-2.7V
GFYW
BL9195-2.8V
GGYW
BL9195-2.85V
GHYW
BL9195-3.0V
GIYW
BL9195-3.2V
GJYW
BL9195-3.3V
GKYW
BL9195-5.0V
GLYW
3
1
2
3
GND VOUT VIN
Temp Range
(Note4)
(Note3)
BL9195-1.2V
2
GND VIN VOUT
BL9195
YWSS A
BL9195
YWSS B
BL9195
YWSS C
BL9195
YWSS D
BL9195
YWSS E
BL9195
YWSS F
BL9195
YWSS G
BL9195
YWSS H
BL9195
YWSS I
BL9195
YWSS J
BL9195
YWSS K
BL9195
YWSS L
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Thermal Resistance (Note 5):
ӨJA
250C/W
160C/W
60C/W
Package
SOT23-3
SOT89-3
SOT223-3
ӨJC
130°C/W
45°C/W
20°C/W
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
Note 2: The BL9195 is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C
to 85°C operating temperature range are assured by design, characterization and correlation with statistical
process controls.
NOTE3: Y: Year of wafer manufacturing W: Week of wafer manufacturing.
Y
0
1
2
3
4
…
Year 2010 2011 2012 2013 2014 ……
W
01
PPMIC BU
BL9195 Rev 1.4
11/2012
2
…
26
27
28
…
52
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©2011 Belling All Rights Reserved
2
BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
Week
A
B
…
Z
…
a
b
z
Note 4: Y: Year of assembly manufacturing W: Week of assembly manufacturing
SS: Lot ID (the 7th and 8th number of Lot numbers)
Y
0
1
2
3
4
…
Year 2010 2011 2012 2013 2014 ……
W
Week
01
A
…
…
2
B
26
Z
27
Step-Down Converter
…
…
28
52
,
Note 5: Thermal Resistance is specified with approximately 1 square of 1 oz copper.
Pin Description
PIN-NUMBER
SOT223-3
SOT23-3
1
3
2
SOT89-3
1
2
3
NAME
FUNCTION
GND
VIN
VOUT
Ground
Power Input Voltage
Output Voltage
Block Diagram
VIN
VREF
-
Error
Amplifier
+
VOUT
Current Limit
And
Thermal
Protection
GND
PPMIC BU
BL9195 Rev 1.4
11/2012
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BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
Electrical Characteristics (Note 6)
(VIN=3.6V, CIN=COUT=1F, TA=25oC, unless otherwise noted.)
Parameter
Symbol
Conditions
Input Voltage
VIN
Output Voltage Accuracy
VIN=3.6V,
Step-Down
VOUT
(Note 7)
IOUT=1mA
Current Limit
ILIM
RLOAD=1
Quiescent Current
IQ
IOUT=0mA
IOUT=200mA,
VOUT=2.8V
Dropout Voltage
VDROP
IOUT=300mA,
VOUT=2.8V
VIN=3.6V to 5.5V
(Note 8)
ΔVLINE
Line Regulation
IOUT=1mA
(Note 9)
ΔVLOAD
1mA<IOUT<300mA
Load Regulation
(Note 10)
Output Voltage
TCVOUT
IOUT=1mA
Temperature Coefficient
Output Noise
10Hz to100KHz,
eNO
Voltage
IOUT=200mA
Power
f=217Hz
Supply
f=1KHz
PSRR
IOUT=100mA
Rejection
f=10KHz
Ratio
Thermal Shutdown
Shutdown, Temp
TSD
Temperature
increasing
Thermal Shutdown
TSDHY
Hysteresis
MIN
TYP
2
-1
Converter
-2
400
430
90
MAX
6
+1
+2
unit
V
130
180
210
300
0.05
0.17
%/V
2
%/A
%
,
mA
A
130
mV
±60
ppm/ oC
100
VRMS
-78
-72
dB
-52
165
o
30
o
C
C
Note 6: 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and
characterization.
Note 7: This IC includes two kinds of output voltage accuracy versions. A: ±1%, B: ±2%.
 VOUT 1  VOUT 2
 V  V
OUT ( normal )
 IN
Note 8: Line regulation is calculated by V
LINE  

  100

Where VOUT1 is the output voltage when VIN=5.5V, and VOUT2 is the output voltage when VIN=3.6V,
△VIN=1.9V . VOUT (normal) =2.8V.
 VOUT 1  VOUT 2 
Note 9: Load regulation is calculated by V
  100
LOAD  
 I  V
 OUT OUT ( normal ) 
Where VOUT1 is the output voltage when IOUT=1mA, and VOUT2 is the output voltage when IOUT=300mA. △IOUT=0.299A,
VOUT(normal)=2.8V.
Note 10: The temperature coefficient is calculated by TC
VOUT 
PPMIC BU
BL9195 Rev 1.4
11/2012
VOUT
T  VOUT
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4
BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
Typical Performance Characteristics
Output Voltage Vs. Temperature
Quiescent Current Vs. Temperature
140
3.0
VIN=3.6V
Step-Down
Converter
130
VIN=3.6V
Output Voltage(V)
CIN=COUT=1uF
Quiescent Current(uA)
CIN=COUT=1uF
2.9
2.8
2.7
,
120
110
100
90
80
2.6
70
2.5
-50
-25
0
25
50
75
100
60
-50
125
-25
0
25
Dropout Voltage Vs. Load Current
250
100
125
PSRR
VOUT=2.8V
-10
VIN=4.2V
CIN=COUT=1uF
-20
CIN=1uF,COUT=1uF,X7R
ILOAD=1mA
ILOAD=100mA
ILOAD=200mA
-30
200
PSRR(dB)
Dropout Voltage(mV)
75
0
300
150
100
-40
-50
-60
TJ=85C
TJ=25C
TJ=-40C
50
-70
-80
0
0
50
100
150
200
250
-90
10
300
100
1000
Load Current(mA)
Current Limit Vs. Input Voltage
480
CIN=COUT=1uF
460
VOUT=2.8V
Output Voltage(V)
420
400
380
360
340
320
3.5
4.0
4.5
Input Voltage(V)
PPMIC BU
BL9195 Rev 1.4
11/2012
100000
VOUT Vs.VIN
440
300
3.0
10000
Frequency(Hz)
500
Current Limit(mA)
50
Temperature(C)
Temperaute(C)
5.0
5.5
6.0
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
1.0
VOUT=2.8V
CIN=COUT=1uF
ILoad=1mA
ILoad=100mA
ILoad=300mA
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage(V)
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BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
Step-Down Converter
,
PPMIC BU
BL9195 Rev 1.4
11/2012
www.belling.com.cn
Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited
©2011 Belling All Rights Reserved
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BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
element turns on again after the junction
temperature cools by 30°C.
For continue operation, do not exceed
Like any low-dropout regulator, the exabsolute maximum operation junction
ternal capacitors used with the BL9195
Step-Down
Converter
temperature
125°C. The power dissipation
must be carefully selected for regulator
definition in device is:
,
stability and performance. Using a capacitor whose value is > 1μF on the BL9195
PD = (VIN−VOUT) ×IOUT + VIN×IQ
input and the amount of capacitance can
be increased without limit. The input capThe maximum power dissipation depends
acitor must be located a distance of not
on the thermal resistance of IC package,
more than 0.5 inch from the input pin of the
PCB layout, the rate of surroundings
IC and returned to a clean analog ground.
airflow and temperature difference betwAny good quality ceramic or tantalum can
een junction to ambient. The maximum
be used for this capacitor. The capacitor
power dissipation can be calculated by
with larger value and lower ESR (equifollowing formula：
valent series resistance) provides better
PSRR and line-transient response. The
PD(MAX) = ( TJ(MAX) − TA ) /θJA
output capacitor must meet both requirements for minimum amount of capaWhere TJ(MAX) is the maximum operation
citance and ESR in all LDOs application.
junction temperature 125°C, TA is the
The BL9195 is designed specifically to
ambient temperature and the θJA is the
work with low ESR ceramic output capajunction to ambient thermal resistance. For
citor in space-saving and performance
recommended operating conditions speconsideration. Using a ceramic capacitor
cification of BL9195, where TJ(MAX) is the
whose value is at least 1μF with ESR is >
maximum junction temperature of the die
25mΩ on the BL9195 output ensures
(125°C) and TA is the maximum ambient
stability. The BL9195 still works well with
temperature. The junction to ambient theroutput capacitor of other types due to the
mal resistance (θJA is layout dependent) for
wide stable ESR range. Output capacitor of
SOT-23-3 package is 250°C/W, SOT89-3
larger capacitance can reduce noise and
package is 160°C/W, SOT-223-3 package
improve load transient response, stability,
is 60°C/W on standard JEDEC 51-3
and PSRR. The output capacitor should be
thermal test board. The maximum power
located not more than 0.5 inch from the
dissipation at TA= 25°C can be calculated
VOUT pin of the BL9195 and returned to a
by following formula:
clean analog ground.
PD(MAX) = (125°C−25°C)/160 = 667mW
Thermal Considerations
(SOT89-3)
Applications Information
Thermal protection limits power dissipation
in BL9195. When the operation junction
temperature exceeds 165°C, the OTP
circuit starts the thermal shutdown function
turn the pass element off. The pass
PPMIC BU
BL9195 Rev 1.3
1/2011
PD(MAX) = (125°C−25°C)/250 = 400mW
(SOT23-3)
PD(MAX) = (125°C−25°C)/60 = 1666mW
(SOT223-3)
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BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
The maximum power dissipation depends
on operating ambient temperature for fixed
TJ(MAX) and thermal resistance θJA. It is
also useful to calculate the junction Step-Down
of
temperature of the BL9195 under a set of
specific conditions. In this example let the
Input voltage VIN=3.3V, the output current
Io=300mA and the case temperature
TA=40°C measured by a thermal couple
during operation. The power dissipation for
the VOUT=2.8V version of the BL9195 can
be calculated as:
Converter
,
PD = (3.3V−2.8V) ×300mA+3.6V×100uA
=150mW
And the junction temperature, TJ, can be
calculated as follows:
TJ=TA+PD×θJA=40°C+0.15W×250°C/W
=40°C+37.5°C=77.5°C<TJ(MAX) =125°C
For this operating condition, TJ is lower
than the absolute maximum operating
junction temperature,125°C, so it is safe to
use the BL9195 in this configuration.
Layout considerations
To improve ac performance such as PSRR,
output noise, and transient response, it is
recommended that the PCB be designed
with separate ground planes for VIN and
VOUT, with each ground plane connected
only at the GND pin of the device.
PPMIC BU
BL9195 Rev 1.3
1/2011
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BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
Package Description
1. SOT23-3
Step-Down Converter
,
PPMIC BU
BL9195 Rev 1.3
1/2011
www.belling.com.cn
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©2011 Belling All Rights Reserved
9
BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
2. SOT89-3
Step-Down Converter
,
PPMIC BU
BL9195 Rev 1.3
1/2011
www.belling.com.cn
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BL9195
300mA 3-Pin, Ultra Fast, Ultra Low Dropout
High PSRR CMOS LDO Regulator
3. SOT223-3
Package
SOT223-3
Device per reel
2500
Unit
mm
Step-Down Converter
,
PPMIC BU
BL9195 Rev 1.3
1/2011
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