HT74XX Negative Voltage Regulator
Features
· · ·
Low power consumption Low voltage drop Low temperature coefficient
· ...
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 Temp...