DescriptionThe MAX16945 ultra-small, monolithic, CMOS chargepump voltage inverter accepts an input voltage ranging from +1.4V to +5.5V. This device features an ultra-low 12 output resistance, permitting loads of up to 30mA at +105 with maximum efficiency. The MAX16945 operates at a frequency of 125kHz, allowing use of small external components. Its small external components,micropower shutdown mode, and wide temperature range make this device ideal for both automotive and industrial applications.
Features of the MAX16945 are:(1)+1.4V to +5.5V input voltage range; (2)30mA guaranteed output current at +105; (3)slew-rate limited to reduce EMI; (4)0.1A logic-controlled shutdown; (5)low 12 output resistance; (6)startup current limited; (7)6-pin SOT23 package; (8)AEC-Q100 qualified.The MAX16945 limits its input current upon startup to 170mA (typ). This prevents low-current or higher output impedance input supplies (such as alkaline cells) from being overloaded when power is applied or when the device awakes from shutdown.
The absolute maximum ratings of the MAX16945 can be summarized as:(1)IN to GND:-0.3V to +6V;(2)storage temperature range:-65 to +150;(3)junction temperature:150;(4)operating temperature range:-40 to 105;(5)OUT output current:90mA.Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.The MAX16945 has a logic-controlled shutdown input.Driving SHDN low places the device in a low-power shutdown mode. The charge-pump switching halts, supply current is reduced to 2nA, and OUT is actively pulled to ground through a 3 resistance.
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MAX16945 Data Sheet
