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BM9166 BOOKLY MICRO
GENERAL DESCRIPTION
The BM9166 family is a positive voltage linear regulator developed utilizing CMOS technology featured low quiescent current (<55uA typ.), low dropout voltage, and high output voltage accuracy. Built-in low on-resistance transistor provides low dropout voltage and large output current. A 2.2F or greater can be used as an output capacitor. The SOT-23-3 miniaturized package are recommended for configuring portable devices and large current application, respectively. These robust devices are designed to prevent device failure under the worst operation condition with both Thermal Shutdown and Current Fold-back.
250mA CMOS LDO
FEATURES
Very Low Dropout Voltage Low Current Consumption: Typ. <55uA Output Voltage: 1.5V, 2.5V , 3.0V, 3.3V High Accuracy Output Voltage: +/- 1.5% Guaranteed >200mA Output Input Range of 1.8V to 7.0V Thermal Shutdown High PSRR to 60dB Compact Package: SOT-23-3, SOT-89 Factory Pre-set Output Voltages Short Circuit Current Fold-Back Low Temperature Coefficient
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
2
1
2
3
SOT23-3
pin1 = GND , pin2 = Vout , Pin3 = Vin ,
SOT89
pin1 GND pin2 = Vin pin3 = Vout
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BM9166 BOOKLY MICRO
BLOCK DIAGRAM
IN OUT
250mA CMOS LDO
Overcurrent Shutdown
Therm al Shutdown
R1
+
Vref = 1.176V
AMP
R2
GND
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BM9166 BOOKLY MICRO
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
250mA CMOS LDO
MARKING INFORMATION
Part Number BM9166EIM23 BM9166DIM23 BM9166CIM23 BM9166BIM23 BM9166FIM23 BM9166AIM23 Output Voltage 1.5V 1.8V 2.5V 2.8V 3.0V 3.3V 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
Note: please contact Bookly Micro Sales office for detail if any concern or question on above information.
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BM9166 BOOKLY MICRO
ABSOLUTE MAXIMUM RATINGS
Input Voltage Output Current Output Voltage .................................................. +7V ............................... PD / (VIN - Vo) ........................ GND-0.3V to VIN+0.3V
250mA CMOS LDO
OPERATING RATINGS
Ambient Temperature Range (TA) ......... -40 to +85 Junction Temperature Range ........... -40 to +125
ESD Classification ................................................ B
THERMAL INFORMATION
Parameter SOT-23-3 Thermal Resistance (jc) SOT-89 SOT-23-3 Thermal Resistance (ja) SOT-89 SOT-23-3 Internal Power Dissipation (PD) (T = 100) Maximum Junction Temperature Maximum Lead Temperature (10 Sec) SOT-89 SOT-89 Maximum 110 18 325 180 300 550 2750* 150 300 mW /W Unit /W
*With Junction sink capable of twice times ofjc Caution: Stress above the listed absolute rating may cause permanent damage to the device.
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BM9166 BOOKLY MICRO
ELECTRICAL CHARACTERISTICS
TA = +25; unless otherwise noted BM9166 Min. Note 1 Io = 1mA to 250mA Io=100mA, VOUT=VOUT-2.0%, VOUT>2.5V Io=100mA, VOUT=VOUT-2.0%, VOUT<=2.0V VOUT > 1.2V VOUT < 1.05V VOUT>1.2V VIN=5V, No Load I = 1mA to 250mA IOUT=5mA, VIN=VOUT+1 to VOUT+2, VOUT <= 3.0V IOUT=5mA, VIN=VOUT+1 to VOUT+2, VOUT > 3.0V Io=1mA to 250mA IO = 100mA CO=10F ceramic f=1KHz f=10KHz f=100KHz -0.15 -0.3 0.03 0.06 0.2 60 60 46 150 30 F=10Hz to 100kHz, CO=10F, IO = 10mA 30 25 Vrms ppm/ 300 450 55 60 0.15 0.3 1 150 300 -1.5 150mV 210mV Typ. Max. 7 1.5
250mA CMOS LDO
Parameter Input Voltage Output Voltage Accurancy Dropout Voltage Output Current Short Circuit Current Current Limit Quiescent Current Ground Pin Current Line Regulation Load Regulation Power Supply Rejection Over Temperature Shutdown Over Temperature Hystersis Output Noise Output Voltage Temp. Coeff.
Note 1. VIN(MIN) = VOUT + 0.3V
Test Conditions
Unit V % mV mV mA mA mA uA uA % % dB
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 2.2F 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 0.1F to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A "quiet" ground termination is desirable.
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BM9166 BOOKLY MICRO
TYPICAL ELECTRICAL CHARACTERISTICS
250mA CMOS LDO
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BM9166 BOOKLY MICRO
250mA CMOS LDO
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BM9166 BOOKLY MICRO
250mA CMOS LDO
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BM9166 BOOKLY MICRO
PACKAGE DIMENSION (CONTINUED)
SOT-23-3 (M23)
D
3
250mA CMOS LDO
b1 c1
With Plating
A
c
A1 A2
E1
b
Base Metal
Section B-B
E
b b1 c c1 D E
1
e e1
2
E1
b
L L1 e e1
1
1 2
A2
A
2
A1
See Section B-B
SOT-89 (M89)
D D1
1.0
E
H
L L1
L
5
C e e1
A
8
L b b1 C D D1 H E e1
b
b1
b
e
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