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 www.digitalspirit.info Page 1 BM9166 250mA CMOS LDO BLOCK DIAGRAM IN OUT Overcurrent Shutdown R1 Therm al Shutdown AMP + Vref = 1.176V R2 GND 2004/8/30 www.digitalspirit.info Page 2 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. 2004/8/30 www.digitalspirit.info Page 3 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. 2004/8/30 www.digitalspirit.info Page 4 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 www.digitalspirit.info Page 5 BM9166 250mA CMOS LDO TYPICAL ELECTRICAL CHARACTERISTICS 2004/8/30 www.digitalspirit.info Page 6 BM9166 250mA CMOS LDO 2004/8/30 Page 7 BM9166 250mA CMOS LDO 2004/8/30 Page 8 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 2004/8/30 b1 b e Page 9