ETC BM9166

BM9166
250mA CMOS LDO
GENERAL DESCRIPTION
FEATURES
The BM9166 family is a positive voltage linear regulator
Very Low Dropout Voltage
developed utilizing CMOS technology featured low quiescent
Low Current Consumption: Typ. <55uA
current (<55uA typ.), low dropout voltage, and high output
Output Voltage: 1.5V, 2.5V , 3.0V, 3.3V
voltage accuracy. Built-in low on-resistance transistor provides
High Accuracy Output Voltage: +/- 1.5%
low dropout voltage and large output current. A 2.2µF or
Guaranteed >200mA Output
greater can be used as an output capacitor.
Input Range of 1.8V to 7.0V
Thermal Shutdown
The SOT-23-3 miniaturized package are recommended for
High PSRR to 60dB
configuring portable devices and large current application,
Compact Package: SOT-23-3, SOT-89
respectively.
Factory Pre-set Output Voltages
Short Circuit Current Fold-Back
These robust devices are designed to prevent device failure
Low Temperature Coefficient
under the worst operation condition with both Thermal
Shutdown and Current Fold-back.
APPLICATIONS
Battery-powered devices , like DSC , MP3 ,
portable DVD
Personal communication devices
Home electric/electronic appliances
PC peripherals ( PC card) , Hard-disc
Pin define
3
1
2004/8/30
2
1
2
3
SOT23-3
SOT89
pin1 = GND ,
pin2 = Vout ,
Pin3 = Vin ,
pin1 =GND
pin2 = Vin
pin3 = Vout
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Page 1
BM9166
250mA CMOS LDO
BLOCK DIAGRAM
IN
OUT
Overcurrent
Shutdown
R1
Therm al
Shutdown
AMP
+
Vref = 1.176V
R2
GND
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BM9166
250mA CMOS LDO
ORDERING INFORMATION
Part Number
BM9166EIM23
BM9166EIM89
BM9166DIM23
BM9166DIM89
BM9166CIM23
BM9166CIM89
BM9166BIM23
BM9166BIM89
BM9166FIM23
BM9166FIM89
BM9166AIM23
BM9166AIM89
Output Voltage
1.5V
1.5V
1.8V
1.8V
2.5V
2.5V
2.8V
2.8V
3.0V
3.0V
3.3V
3.3V
Temperature Range
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
Package
SOT-23-3
SOT-89
SOT-23-3
SOT-89
SOT-23-3
SOT-89
SOT-23-3
SOT-89
SOT-23-3
SOT-89
SOT-23-3
SOT-89
Laser marking on chip
66E (168E)
66D
66C
66B
66F
66A
Package
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
SOT-23-3
MARKING INFORMATION
Part Number
BM9166EIM23
BM9166DIM23
BM9166CIM23
BM9166BIM23
BM9166FIM23
BM9166AIM23
Output Voltage
1.5V
1.8V
2.5V
2.8V
3.0V
3.3V
Note: please contact Bookly Micro Sales office for detail if any concern or question on above information.
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BM9166
250mA CMOS LDO
ABSOLUTE MAXIMUM RATINGS
OPERATING RATINGS
Input Voltage
…………….……………………………. +7V
Ambient Temperature Range (TA) ……... -40℃ to +85℃
PD / (VIN - Vo)
Junction Temperature Range …..…... -40℃ to +125℃
Output Current
…………………….……
Output Voltage
…………………… GND-0.3V to VIN+0.3V
ESD Classification ………………………………………… B
THERMAL INFORMATION
Parameter
Thermal Resistance (Θjc)
Thermal Resistance (Θja)
Internal Power Dissipation (PD)
(ΔT = 100℃)
SOT-23-3
Maximum
110
SOT-89
18
SOT-23-3
325
SOT-89
180
SOT-23-3
300
SOT-89
SOT-89
550
2750*
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
150
300
Unit
℃/W
℃/W
mW
℃
℃
*With Junction sink capable of twice times ofΘjc
Caution: Stress above the listed absolute rating may cause permanent damage to the device.
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BM9166
250mA CMOS LDO
ELECTRICAL CHARACTERISTICS
TA = +25℃; unless otherwise noted
Parameter
Test Conditions
Input Voltage
Output Voltage Accurancy
Dropout Voltage
Io = 1mA to 250mA
Short Circuit Current
VOUT < 1.05V
Current Limit
VOUT>1.2V
Quiescent Current
VIN=5V, No Load
Ground Pin Current
Unit
Max.
7
V
-1.5
1.5
%
150mV
mV
210mV
mV
150
mA
300
300
I = 1mA to 250mA
mA
55
uA
60
uA
-0.15
0.03
0.15
IOUT=5mA, VIN=VOUT+1 to VOUT+2, VOUT > 3.0V
-0.3
0.06
0.3
0.2
1
Io=1mA to 250mA
IO = 100mA
f=1KHz
f=10KHz
60
CO=10µF ceramic
f=100KHz
46
Over Temperature Shutdown
mA
450
IOUT=5mA, VIN=VOUT+1 to VOUT+2, VOUT <= 3.0V
Load Regulation
%
%
dB
60
℃
150
Over Temperature Hystersis
Output Noise
Typ.
Note 1
Io=100mA, VOUT=VOUT-2.0%, VOUT<=2.0V
VOUT > 1.2V
Power Supply Rejection
Min.
Io=100mA, VOUT=VOUT-2.0%, VOUT>2.5V
Output Current
Line Regulation
BM9166
F=10Hz to 100kHz, CO=10µF, IO = 10mA
Output Voltage Temp. Coeff.
30
℃
30
μVrms
25
ppm/℃
Note 1. VIN(MIN) = VOUT + 0.3V
DETAILED DESCRIPTION
The BM9166 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current
protection, thermal shutdown, and short circuit protection.
The P-channel pass transistor receives data from the error amplifier, over-current shutdown, short output protection, and thermal
protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current
and Thermal shutdown circuits become active when the junction temperature exceeds 150℃, or the current exceeds 350mA.
During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops
below 120℃.
The BM9166 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents
over-stress. The BM9166 also incorporates current fold-back to reduce power dissipation when the output is short-circuited. This
feature becomes active when the output drops below 1.05V, and reduces the current flow by 65%. Full current is restored when
the voltage exceeds 1.05V.
EXTERNAL CAPACITOR
The BM9166 is stable with an output capacitor to ground of 2.2µF or 10uF is best. It can keep stable even with higher or poor
ESR capacitors. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should
be larger than 0.1µF to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “quiet” ground
termination is desirable.
2004/8/30
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BM9166
250mA CMOS LDO
TYPICAL ELECTRICAL CHARACTERISTICS
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BM9166
250mA CMOS LDO
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BM9166
250mA CMOS LDO
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BM9166
250mA CMOS LDO
PACKAGE DIMENSION (CONTINUED)
SOT-23-3 (M23)
D
3
b1
With Plating
c
c1
A
A1
E
E1
A2
b
b
Base Metal
b1
c
Section B-B
c1
D
E
1
E1
2
e
b
L
e1
L1
e
θ1
e1
θ
θ1
θ
A2
A
θ2
θ2
A1
L
See Section B-B
L1
SOT-89 (M89)
D
D1
L
5 H
E
φ1.0
C
e
e1
A
8 L
b
b1
C
D
D1
H
E
e1
b
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b1
b
e
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