RT9262A

 Supply Voltage.......................................... -0.3V to 7V
 LX Pin Switch Voltage................ -0.3V to (V_DD + 0.8V)
 LDO Output Voltage............... ....-0.3V to (V_DD + 0.3V)
 Other I/O Pin Voltages............... -0.3V to (V_DD + 0.3V)
 LX Pin Switch Current ............................................2.5A
 EXT Pin Driver Current ..........................................30mA
 LBO Current.......................................................... 30mA
 Power Dissipation, P_D @ T_A = 25
    SOP-8 ..............................................................0.625W
 Package Thermal Resistance
    SOP-8, ......................................................._JA 160/W
 Operating Junction Temperature............................. 150
 Storage Temperature Range.................... -65 ~ +150

The RT9262/A is a compact, high efficient, step-up DC/DC converter with an adaptive current mode PWM control loop, providing a stable and high efficient operation over a wide range of load currents. It operates in both continuous and
discontinuous current modes in stable waveforms without external compensation.

The low start-up input voltage below 1V makes RT9262/A suitable for 1 to 4 battery cell applications providing up to 400mA output current. The 550KHz high switching rate minimized the size of external components. Besides, the 17µA low quiescent current together with high efficiency maintains long battery lifetime.

The 1.8V to 5V output voltage is set with 2 external resistors. Both internal 2A switch and driver for driving external power devices (NMOS or NPN) are provided.

A 300mA LDO is included in RT9262 to provide a secondary low noise output as well as an output current stop in the shutdown mode. Similarly, a 1.8V to 5V LDO output voltage can be set with 2 external resistors. For RT9262A, a low battery detector with 0.86V detection voltage is included. RT9262/A are provided in SOP-8 packages.