BL916950J5F [BELLING]
300mA,Ultra-low noise;
| 型号： | BL916950J5F |
| 厂家： | 
BELLING |
| 描述： | 300mA,Ultra-low noise |
| 文件： | 总10页 (文件大小：538K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
BL9169
300mA,Ultra-low noise, Small Package
Ultra-Fast CMOS LDO Regulator
General Description
The BL9169 is designed for portable RF and wireless applications with demanding performance and
space requirements. The BL9169 performance is optimized for battery-powered systems to deliver
ultra low noise and low quiescent current. The BL9169 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power applications, critical in hand-held wireless
devices.
The BL9169 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. It is
available in the 5-lead of SOT23-5 and TSOT23-5 packages.
Features
Ultra-Low-Noise for RF Application
2.5V- 5.5V Input Voltage Range
Low Dropout : 220mV @ 300mA
1.2V, 1.5V, 1.8V, 2.5V, 2.8V,3.0V,3.3V, 3.6V and 5V Fixed
300mA Output Current, 550mA Peak Current
High PSSR:-76dB at 1KHz
0.01uA Standby Current When Shutdown
TTL-Logic-Controlled Shutdown Input
Ultra-Fast Response in Line/Load transient
Current Limiting and Thermal Shutdown Protection
Quick start-up (typically 50uS)
Available in SOT23-5 and TSOT23-5 Package
Applications
Portable Media Players/MP3 players
Cellular and Smart mobile phone
LCD
DSC Sensor
Wireless Card
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Typical Application Circuit
Ordering Information
BL9169 □ □ □ □ □
F: Pb-Free
Package Type
B3: SOT23-3
B5: SOT23-5
J5: TSOT23-5
Output Voltage Type
12: 1.2V
15: 1.5V
18: 1.8V
25: 2.5V
28: 2.8V
30: 3.0V
33: 3.3V
36: 3.6V
50: 5.0V
Pin Configurations
Top View
2
V O U T
V IN
3
1
G N D
TSOT23-5/SOT-23-5
SOT-23-3
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Functional Pin Description
SOT23-5 SOT23-3
Pin Name Pin Function
3
1
1
2
VIN
Power Input Voltage.
Ground.
GND
Chip Enable (Active High). Note that this pin is high impedance. There is an
integrated pull low 2MΩ resistor connected to GND when the control signal
is floating.
3
EN
4
5
NC
No Connection.
Output Voltage.
2
VOUT
Function Block Diagram
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Absolute Maximum Ratings
Supply Input Voltage------------------------------------------------------------------------------------------------------- 6.5V
Other Pin Voltage---------------------------------------------------------------------------------------- -0.3V to VIN+0.3V
Power Dissipation, PD @ TA = 25°C
SOT23-5 ------------------------------------------------------------------------------------------------------------------450mW
SOT23-3 ------------------------------------------------------------------------------------------------------------------450mW
Package Thermal Resistance
SOT23-5, θJA ----------------------------------------------------------------------------------------------------------250°C/W
SOT23-3, θJA ----------------------------------------------------------------------------------------------------------250°C/W
Lead Temperature (Soldering, 10 sec.) -----------------------------------------------------------------------------260°C
Storage Temperature Range ----------------------------------------------------------------------------- −65°C to 150°C
ESD Susceptibility
HBM (Human Body Mode) ------------------------------------------------------------------------------------------------2kV
MM(Machine-Mode)--------------------------------------------------------------------------------------------------------200V
Recommended Operating Conditions
Supply Input Voltage--------------------------------------------------------------------------------------------- 2.5V to 5.5V
EN Input Voltage ----------------------------------------------------------------------------------------------------- 0V to 5.5V
Operation Junction Temperature Range -------------------------------------------------------------- −40°C to 125°C
Operation Ambient Temperature Range----------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VIN = VOUT + 1V, CIN = COUT = 1µF, TA = 25° C, unless otherwise specified)
Parameter
Symbol
ΔVOUT
ILOAD
Test Conditions
Min Typ. Max
Units
%
Output Voltage Accuracy
Output Loading Current
Current Limit
IOUT = 1mA
--
+3
−2
VEN=VIN,VIN>2.5V
RLOAD = 1Ω
300
mA
mA
μA
ILIM
420 450
100
Quiescent Current
IQ
VEN ≥ 1.2V, IOUT = 0mA
130
200
IOUT = 200mA, VOUT >
2.8V
IOUT = 300mA, VOUT >
2.8V
130
220
Dropout Voltage
VDROP
mV
300
0.2
VIN = (VOUT + 1V) to
5.5V, IOUT = 1mA
Line Regulation
Load Regulation
%/V
%/A
ΔVLINE
ΔLOAD
1mA < IOUT < 300mA
2
Standby Current
ISTBY
IIBSD
VEN = GND, Shutdown
VEN = 3V
0.01
1.5
1
2
μA
μA
EN Input Bias Current
VIN = 3V to 5.5V,
Shutdown
Logic-Low
EN Threshold
VIL
0.4
V
Voltage
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Logic-High
Voltage
VIN+
0.3
1.4
VIH
VIN = 3V to 5.5V, Start-Up
10Hz to 100kHz, IOUT =
200mA, COUT = 1µF
Output Noise Voltage
300
-76
uVRMS
COUT = 1µF,
IOUT = 100mA
Power Supply
Rejection Rate
f = 1kHz
dB
f = 10kHz
−65
150
Thermal Shutdown Temperature
TSD
°C
Typical Operating Characteristics
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following formula:
PD(MAX) = ( TJ(MAX) − TA ) /θJA
Where
Applications Information
Like any low-dropout regulator, the external capacitors
used with the BL9169 must be carefully selected for
regulator stability and performance. Using a capacitor
whose value is > 1µF on the BL9169 input and the amount
of capacitance can be increased without limit. The input
capacitor must be located a distance of not more than 0.5
inch from the input pin of the IC and returned to a clean
analog ground. Any good quality ceramic or tantalum can
be used for this capacitor. The capacitor with larger value
and lower ESR (equivalent series resistance) provides
better PSRR and line-transient response. The output
capacitor must meet both requirements for minimum
amount of capacitance and ESR in all LDOs application.
The BL9169 is designed specifically to work with low ESR
ceramic output capacitor in space-saving and
performance consideration. Using a ceramic capacitor
whose value is at least 1µF with ESR is > 25mΩ on the
BL9169 output ensures stability. The BL9169 still works
well with output capacitor of other types due to the wide
stable ESR range. Output capacitor of larger capacitance
can reduce noise and improve load transient response,
stability, and PSRR. The output capacitor should be
located not more than 0.5 inch from the VOUT pin of the
BL9169 and returned to a clean analog ground.
TJ(MAX) is the maximum operation junction temperature
125°C, TA is the ambient temperature and the θJA is the
junction to ambient thermal resistance. For recommended
operating conditions specification of BL9169, where
TJ(MAX) is the maximum junction temperature of the die
(125°C) and TA is the maximum ambient temperature.
The junction to ambient thermal resistance (θJA is layout
dependent) for SOT23-5 package is 250°C/W.
PD(MAX) = (125°C−25°C) / 250 = 400mW (SOT23-5)
The maximum power dissipation depends on operating
ambient temperature for fixed TJ(MAX) and thermal
resistance θJA.
Start-up Function Enable Function
The BL9169 features an LDO regulator enable/disable
function. To assure the LDO regulator will switch on, the
EN turn on control level must be greater than 1.4 volts.
The LDO regulator will go into the shutdown mode when
the voltage on the EN pin falls below 0.4 volts. For to
protecting the system, the BL9169 have a quick-discharge
function. If the enable function is not needed in a specific
application, it may be tied to VIN to keep the LDO
regulator in a continuously on state.
Thermal Considerations
Thermal protection limits power dissipation in BL9169.
When the operation junction temperature exceeds 150°C,
the OTP circuit starts the thermal shutdown function turn
the pass element off. The pass element turns on again
after the junction temperature cools by 20°C. For continue
operation, do not exceed absolute maximum operation
junction temperature 125°C.
The power dissipation definition in device is:
PD = (VIN−VOUT) x IOUT + VIN x IQ
The maximum power dissipation depends on the thermal
resistance of IC package, PCB layout, the rate of
surroundings airflow and temperature difference between
junction to ambient.
The maximum power dissipation can be calculated by
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Packaging Information
SOT23-5
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SOT23-3
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