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| BM9164 BOOKLY MICRO GENERAL DESCRIPTION The BM9164 family of a linear voltage linear regulators developed utilizing BM unique BiCMOS technology featured low quiescent current (<1mA), low dropout voltage, and high output voltage accuracy. The space-efficient SOT-223 package is attractive for "Pocket" and "Hand Held" applications. Output voltages are set at the factory and trimmed to 1.5% accuracy. Voltages from 1.8V to 5.0V are available. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the "Worst" of operating conditions. The BM9164 is stable with an output capacitance of 22F or greater. 1A BiCMOS LDO FEATURES Very Low Dropout Voltage , <700mV when 1A Low Current Consumption: Typ. <1mA High Accuracy Output Voltage: +/- 1.5% Guaranteed 1A Output (if Vin-Vout>700mV) Thermal Shutdown Current Limiting Compact Package: SOT-223 Factory Pre-set Output Voltages Short Circuit Current Fold-Back Low Temperature Coefficient APPLICATIONS Battery-powered devices Personal communication devices Home electric/electronic appliances PC peripherals , hard-disk PIN CONFIGURATION SOT-223 Top View 1 2 www.bookly.com VOUT 3 GND VIN Page 1 BM9164 BOOKLY MICRO BLOCK DIAGRAM IN OUT 1A BiCMOS LDO Overcurrent Shutdown Thermal Shutdown R1 + Vref = 1.215V AMP R2 GND ORDERING INFORMATION Part Number BM9164-1.8 BM9164-3.3 BM9164-4.9 Output Voltage 1.8V 3.3V 4.9V Temperature Range -40 ~ +85 -40 ~ +85 -40 ~ +85 Package SOT-223 SOT-223 SOT-223 www.bookly.com Page 2 BM9164 BOOKLY MICRO ABSOLUTE MAXIMUM RATINGS Input Voltage Output Current Output Voltage .................................................. +9V ............................................... 2.2A ........................ GND-0.3V to VIN+0.3V 1A BiCMOS LDO OPERATING RATINGS Supply Voltage ..................................... +2V to +8V Ambient Temperature Range (TA) ......... -40 to +85 Junction Temperature Range ........... -40 to +125 ESD Classification ................................................ B THERMAL INFORMATION Parameter Thermal Resistance (jc) Internal Power Dissipation (PD) (T = 100) Maximum Junction Temperature Maximum Lead Temperature (10 Sec) SOT-223 SOT-223 Maximum 160 625 150 300 Unit /W mW *With Junction sink capable of twice times ofjc Caution: Stress above the listed absolute rating may cause permanent damage to the device. www.bookly.com Page 3 BM9164 BOOKLY MICRO ELECTRICAL CHARACTERISTICS TA = +25; unless otherwise noted BM9164 Min. +2 IO = 1mA to 1.5A Iout=1A Dropout Voltage Output Current Current Limit Short Circuit Current Quiescent Current Ground Pin Current Line Regulation Load Regulation Over Temperature Shutdown Over Temperature Hystersis VOUT Temperature Coefficient Power Supply Rejection VDROPOUT IO ILIM ISC IQ IGND REGLINE REGLOAD OTS OTH TC PSRR IO = 100mA CO=22F ceramic f=10Hz to 100kHz IO = 10mA f=1kHz f=10kHz f=100kHz CO=22F CO=47F VOUT=VO(NOM)-4%, Iout=600mA Iout=100mA VOUT > 1.5V VOUT > 1.5V VOUT < 0.4V IO = 0mA IO = 1mA to 1A IOUT=5mA VOUT <= 2.0V VOUT > 2.0V 1.5 0.2 150 30 30 70 50 40 30 20 Vrms dB 2000 1000 2200 750 1 1 0.15 0.1 1.5 1500 -1.5 Typ. Max. +8 1.5 700 350 100 1A BiCMOS LDO Parameter Input Voltage Output Voltage Accuracy Symbol VIN VOUT Test Conditions Unit V % mV mV mA mA mA mA mA % % % ppm/ IO=1mA to 1A Output Voltage Noise Note 1. VIN(MIN) = VOUT + VDROPOUT eN www.bookly.com Page 4 BM9164 BOOKLY MICRO DETAILED DESCRIPTION The BM9164 family of BiCMOS regulators contain a 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 2.2A. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120 . The BM9164 behaves like a current source when the load reaches 2.2A. However, if the load impedance drops below 0.3, the current drops back to 600mA to prevent excessive power dissipation. Normal operation is restored when the load resistance exceeds 0.75. 1A BiCMOS LDO EXTERNAL CAPACITOR The BM9164 is stable with an output capacitor to ground of 22F or greater. Ceramic capacitors have the lowest ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the highest ESR, resulting in the poorest AC response. Unfortunately, large value ceramic capacitors are comparatively expensive. One option is to parallel a 0.1F ceramic capacitor with a 22F Aluminum Electrolytic. The benefit is low ESR, high capacitance, and low overall cost. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should be larger than 22F to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A "quiet" ground termination is desirable. www.bookly.com Page 5 BM9164 BOOKLY MICRO TYPICAL ELECTRICAL CHARACTERISTICS Minimum Operating Current Short-Circuit Current 1A BiCMOS LDO Load Regulation Ripple Rejection vs. Current Temperature Stability GND Pin Current www.bookly.com Page 6 BM9164 BOOKLY MICRO 1A BiCMOS LDO www.bookly.com Page 7 BM9164 BOOKLY MICRO 1A BiCMOS LDO www.bookly.com Page 8 BM9164 BOOKLY MICRO PACKAGE DIMENSION SOT-223 (M223) D B1 A 1A BiCMOS LDO E L1 H e e1 8 A B B1 D E e e1 H L L1 B B www.bookly.com L Page 9 |
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