BL9105
Ultra-
Ultra-
500mA Ultra-low Noise, Ultra-Fast
CMOS LDO Regulator
FEATURES
Ultra-low Noise for RF Application
Ultra-Fast Response in Line/Load
Transient
<0.01µA
Standby
Current
When
Shutdown.
Low Dropout: 370mV@500mA
Wide Operating Voltage Ranges:2V to
6V
TTL-logic-Controlled Shutdown Input
Low Temperature Coefficient
Current Limiting Protection
Thermal Shutdown Protection
Only 1µF Output Capacitor Required for
Stability
High Power Supply Rejection Ratio
Custom Voltage Available
Fast output discharge
Available in 5-Lead SOT-23 and SC-70
Package
Hand-Held Instruments
PCMCIA Cards
MP3/MP4/MP5 Players
Portable Information Appliances
DESCRIPTION
The BL9105 is designed for portable RF and
wireless applications with demanding perfor-
mance and space requirements. The BL9105
performance is optimized for battery-powered
systems to deliver ultra low noise and low
quiescent current. Regulator ground current
increases only slightly in dropout, further
prolonging the battery life. The BL9105 also
works with low-ESR ceramic capacitors,
reducing the amount of board space
necessary for power applications, critical in
hand-held
wireless devices. The BL9105
consumes less than 0.01µA in shutdown
mode and has fast turn-on time less than
50µs. The other features include ultra low
dropout voltage, high output accuracy,
current limiting protection, and high ripple
rejection ratio. Available in the 5-lead SC-70
and SOT-23 packages.
APPLICATIONS
Cellular and Smart Phones
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
ORDERING INFORMATION
BL9105
XX X X X XXX
Package:
RN: SOT-23-5
URN: SC-70-5
Features
P: Standard (default, lead free)
C: Customized
TYPICAL APPLICATION
VIN
C1
1uF
Chip
Enable
1
2
3
VIN
GND
VOUT
5
VOUT
C2
1uF
NC
4
BL9105
EN
Enable Option:
A: active high with internal 8 M pull down
B: active low with internal 8 M pull up
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)
Application hints:
Output capacitor (C2 2.2uF) is recommended
in BL9105-1.2V, BL9105-1.3V, BL9105-1.5V
and BL9105-1.8V application to assure the
stability of circuit.
PPMIC BU
BL9105 Rev 1.1
03/2011
www.belling.com.cn
Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited
©2011 Belling All Rights Reserved
≥
1
BL9105
Ultra-
Ultra-
500mA Ultra-low Noise, Ultra-Fast
CMOS LDO Regulator
Absolute Maximum Rating
Input Supply Voltage (VIN)
EN Pin Input Voltage
Output Voltages
Output Current
(Note 1)
-0.3V to +6V
-0.3V to VIN
-0.3V to VIN+0.3V
700mA
Maximum Junction Temperature
150°C
(Note2)
Operating Temperature Range
-40°C to 85°C
Storage Temperature Range
-65°C to 125°C
Lead Temperature (Soldering, 10s)
300°C
Package Information
SOT23- SC70-
SOT23-5/SC70-5
23
70
TOP VIEW
Thermal Resistance
(Note 4)
:
5
VOUT
VIN
1
MARKING
Package
SOT23-5
SC70-5
JA
JC
250°C/W
333°C/W
130°C/W
170°C/W
GND 2
EN
3
4
NC
Part Number
BL9105-12
BL9105-13
BL9105-15
BL9105-18
BL9105-25
BL9105-27
BL9105-28
BL9105-285
BL9105-30
BL9105-32
BL9105-33
BL9105-50
Top Mark
HAYW
HBYW
HCYW
HDYW
HEYW
HFYW
HGYW
HHYW
HIYW
HJYW
HKYW
HLYW
Temp Range
-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
(Note3)
Y
Year
W
Week
9
2009
A
1
A
2010
…
…
B
2011
Y
25
C
2012
Z
26
D
2013
a
27
…
…
y
51
z
52
Note 1:
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
Note 2:
The BL9105 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.
Note 3:
Y: Year of wafer manufacturing W: Week of wafer manufacturing.
Note 4:
Thermal Resistance is specified with approximately 1 square of 1 oz copper.
PPMIC BU
BL9105 Rev 1.1
03/2011
www.belling.com.cn
Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited
©2011 Belling All Rights Reserved
2
BL9105
Ultra-
Ultra-
500mA Ultra-low Noise, Ultra-Fast
CMOS LDO Regulator
Electrical Characteristics
(Note 5)
Current Limit
Quiescent Current
Dropout Voltage
(Note 7)
(Note 8)
I
LIM
I
Q
V
DROP
Line Regulation
∆V
LINE
∆V
LOAD
TC
VOUT
I
STBY
I
IBSD
V
IL
V
IH
e
NO
PSRR
Standby Current
EN Input Bias Current
EN
Input
Threshold
Logic Low
Logic High
T
SDHY
30
Note 5:
100% production test at +25°C. Specifications over the temperature range are guaranteed by design and
characterization.
Note 6:
This IC includes two kinds of output voltage accuracy versions. A: ±1%, B: ±2%.
Note 7:
Line regulation is calculated by
∆
V
LINE
=
V
OUT
1
−
V
OUT
2
∆
V
×
V
OUT
(
normal
)
IN
×
100
Where V
OUT1
is the output voltage when V
IN
=5.5V, and V
OUT2
is the output voltage when V
IN
=3.6V,
V
IN
=1.9V . V
OUT
(normal) =2.8V.
PPMIC BU
BL9105 Rev 1.1
03/2011
www.belling.com.cn
Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited
©2011 Belling All Rights Reserved
△
V
OUT
1
−
V
OUT
2
Note 8:
Load regulation is calculated by
∆
V
×
100
LOAD
=
∆
I
×
V
OUT
OUT
(
normal
)
Where V
OUT1
is the output voltage when I
OUT
=1mA, and V
OUT2
is the output voltage when I
OUT
=300mA.
V
OUT
(normal)=2.8V.
∆
V
OUT
Note 9:
The temperature coefficient is calculated by
TC
V
OUT
=
∆
T
×
V
OUT
I
OUT
=0.299A,
℃
℃
Output Noise
Voltage
Power
f=217Hz
Supply
f=1KHz
Rejection
f=10KHz
Ratio
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
V
EN
=GND,
Shutdown
V
EN
=GND or V
IN
V
IN
=3V to 5.5V,
Shutdown
V
IN
=3V to 5.5V,
Start up
10Hz to100KHz,
I
OUT
=200mA
I
OUT
=100mA
Shutdown, Temp
increasing
0.01
1
500
0.4
µA
nA
V
V
1.2
100
-78
-72
-52
µV
RMS
dB
T
SD
165
℃
Load Regulation
(Note 9)
Output Voltage
Temperature Coefficient
℃
(V
IN
=3.6V, EN=V
IN,
C
IN
=C
OUT
=1µF, T
A
=25
Parameter
Symbol
Input Voltage
V
IN
Output Voltage Accuracy
∆V
OUT
(Note 6)
, unless otherwise noted.)
Conditions
MIN
2
-1
V
IN=
3.6V,
I
OUT
=1mA
-2
R
LOAD
=1Ω
V
EN
>1.2V, I
OUT
=0mA
I
OUT
=200mA,
V
OUT
=3.3V
I
OUT
=500mA,
V
OUT
=3.3V
V
IN
=3.6V to 5.5V
I
OUT
=1mA
1mA<I
OUT
<500mA
I
OUT
=1mA
TYP
MAX
6
+1
+2
130
180
unit
V
%
mA
µA
mV
700
90
130
370
0.05
500
0.17
2
%/V
%/A
ppm/
±60
△
4
BL9105
Ultra-
Ultra-
500mA Ultra-low Noise, Ultra-Fast
CMOS LDO Regulator
Typical Performance Characteristics
Output Voltage Vs. Temperature
3.0
Quiescent Current Vs. Temperature
140
130
Quiescent Current(uA)
120
110
100
90
80
V
IN
=3.6V
2.9
Output Voltage(V)
C
IN
=C
OUT
=1uF
V
IN
=3.6V
C
IN
=C
OUT
=1uF
2.8
2.7
2.6
70
2.5
-50
-25
0
25
50
75
100
125
60
-50
-25
0
25
50
75
100
125
Temperaute(
°
C
)
Temperature(
°
C)
Dropout Voltage Vs. Load Current
500
450
400
Dropout Voltage(mV)
350
0
PSRR
-10
-20
-30
C
IN
=C
OUT
=1uF
V
IN
=4.2V
C
IN
=1uF,C
OUT
=1uF,X7R
I
LOAD
=1mA
I
LOAD
=100mA
I
LOAD
=200mA
PSRR(dB)
300
250
200
150
100
50
0
-50
-50
0
50 100 150 200 250 300 350 400 450 500 550
Load Current(mA)
-40
-50
-60
-70
-80
-90
10
TJ=85
°
C
TJ=25
°
C
TJ=-40
°
C
100
1000
10000
100000
Frequency(Hz)
EN Pin Shutdown Threshold Vs. Temperature
1.05
500
Current Limit Vs. Input Voltage
480
460
V
IN
=3.6V
1.00
EN Pin Shutdown Threshold(V)
C
IN
=C
OUT
=1uF
Current Limit(mA)
C
IN
=C
OUT
=1uF
V
OUT
=2.8V
0.95
440
420
400
380
360
0.90
0.85
0.80
340
320
0.75
-50
-25
0
25
50
75
100
125
Temperature(
°
C)
300
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage(V)
PPMIC BU
BL9105 Rev 1.1
03/2011
www.belling.com.cn
Belling Proprietary Information. Unauthorized Photocopy and Duplication Prohibited
©2011 Belling All Rights Reserved
5
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