PWM step-up DC/DC converter with voltage regulator and detector. 1 and 2 XX: Vout, step 0.1V, range 1.5V to 6.0V. 3 and 4 XX: Vdet, step 0.1V, range 1.2V to 5.0V. Operating of all the internal circuits is stopped by setting chip enable pin at Vdd level.
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