7430

HT74XX Negative Voltage Regulator Features · · · Low power consumption Low voltage drop Low temperature coefficient · · · High input voltage (up to -24V) High output current : 100mA (Pd £ 250mW) TO-92 and SOT-89 package Applications · · Battery-powered equipment Communication equipment · Audio/Video equipment General Description The HT74XX series is a set of three-terminal high current high voltage regulator implemented in CMOS technology. They can deliver 100mA output current and allow an input voltage as high as -24V. They are available with several fixed output voltages ranging from -2.4V to -15V. CMOS technology ensures low voltage drop and low quiescent current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain variable voltages and currents. Selection Table Part No. HT7430 HT7450 Output Voltage -3.0V -5.0V Tolerance ±5% ±5% 1 January 26, 2000 HT74XX Block Diagram VIN ref Pin Assignment TO-92 HT74XX Front View SOT-89 VOUT GND VIN GND VIN VOUT GND VOUT Bottom View Pad Assignment Pad Coordinates Pad No. 1 (0 ,0 ) Unit: mm X Y -578.00 -545.50 -545.50 -571.75 175.75 592.25 2 3 1 2 3 Chip size: 1550 ´ 1562 (mm)2 * The IC substrate should be connected to VDD in the PCB layout artwork. Absolute Maximum Ratings Supply Voltage.............................+0.3V to -26V Power Consumption.............................. 250mW Storage Temperature.................-50°C to 125°C Operating Temperature ..................0°C to 70°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. VOUT V IN GND 2 January 26, 2000 HT74XX Electrical Characteristics HT7430, -3.0V output type Symbol VOUT IOUT DVOUT VDIF ISS DVOUT DVIN ´ VOUT VIN DVOUT DTa Parameter Test Conditions VIN -5V ¾ Conditions ¾ IOUT=1mA -4V£VIN£-12V IOUT=1mA ¾ IOUT=10mA 0°C