HT-2050

HT— 2050 FIVE LAMP/LED FLASH DRIVER A. General Description — DEC.29.1993 PAGE: 1 The HT–2050 is a low cost, low-power C-MOS LSI designed for lamp and LED flash driver. It has five flash outputs with 10mA drive capability that can implement random or sequence flashing function controlled by one option pin. It only requires one external resistor for typical application. It is very suitable for the use of the flash products such as disco glasses, disco hat, gift card, X’mas decoration and so forth. B. Features — C-MOS Metal-Gate Process. Operating voltage: 1.2V ~ 4.5V. Low stand-by current: 1 µ A at 3V. Five lamp flash driver with 10mA driving capability. Random or sequence flash selection toggle on/off control function. 1/10 duty cycle output. Built-in oscillator. Minimum external components. C. Block Diagram — HT— 2050 FIVE LAMP/LED FLASH DRIVER D. Pin Assignment — DEC.29.1993 PAGE: 2 E. Pad Assignment & Position — C hip Size: 64 × 59 (m il) 2 * The IC substrate should be connected to VDD in PCB layout artwork. U nit: m il Pad No. 1 2 3 4 5 6 Symbol OUT1 OUT2 OUT3 OUT4 OUT5 OSC1 x –21.09 –9.89 1.31 12.51 23.71 26.23 Y –20.9 –20.9 –20.9 –20.9 –20.9 13.3 Pad No. 7 8 9 10 11 12 Symbol OSC2 VDD TEST OPT ON/OFF VSS X 26.55 13.35 6.15 –10.89 –26.25 –26.25 Y 26.5 26.5 26.5 26.5 26.5 10.98 HT— 2050 FIVE LAMP/LED FLASH DRIVER F. Absolute Maximum Ratings — Parameter Supply Voltage Input/Output Voltage Storage Temperature Operating Temperature Symbol V DD V I, ...