LM4570 Datasheet | National Semiconductor

Description The LM4570 is a single supply motor driver for improved sensory experience in mobile phones and other handheld devices. The LM4570 is capable of driving up to 192m A while operating from a 3V supply. Near rail-to-rail output swing under load ensures sufficient voltage drive for most DC motors, while the differential output drive allows the voltage polarity across the motor to be reversed quickly. .. Reversing the voltage gives the LM4570 the ability to drive a motor both clock-wise and counter clock-wise from a single supply. The LM4570 features fast turn on time, and a wide input voltage range for precise speed control. A low power shutdown mode minimizes power consumption. Thermal and output short circuit protection prevents the device from being damaged during fault conditions. Key Specifications j High Output Current @ VDD = 3V j Fast Turn On Time @ 3V j Quiescent Power Supply Current @ 3V j Shutdown Current 192m A 2.4ms 1.9m A 0.1µA (typ) Features n n n n n n n n Output Short Circuit Protection High Output Current Capability Wide Output Voltage Range Fast Turn on Time Output Short Circuit Protection Low Power Shutdown Mode Minimum external ponents Available in space-saving LLP package Applications n Mobile Phones n PDAs n Video Game Systems Typical Application FIGURE 1. Typical Motor Driver Application Circuit © 2006 National Semiconductor Corporation DS201863 .national. Connection Diagrams Leadless Leadframe Package (LLP) LQ Package .. Top View Order Number LM4570LQ See NS Package Number LQB08A LLP Marking Top View X - One digit date code TT - Lot traceability G - Boomer Family C8 - LM4570LQ .national. Absolute Maximum Ratings (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (Note 1) Storage Temperature Voltage at Any Input Pin Power Dissipation (Note 3)...