LM26003 Datasheet | Texas Instruments

Features - 1 LM26003-Q1 is an Automotive-Grade Product That is AEC-Q100 Grade 1 Qualified (- 40°C to +125°C Operating Junction Temperature) - High-Efficiency Sleep Mode - 40-µA Typical Iq in Sleep Mode - 10.8-µA Typical Iq in Shutdown Mode - 3.0-V Minimum Input Voltage - 4.0-V to 38-V Continuous Input Range - 1.5% Reference Accuracy - Cycle-by-Cycle Current Limit - Adjustable Frequency (150 k Hz to 500 k Hz) - Synchronizable to an External Clock - Power Good Flag - Forced PWM Function - Adjustable Soft-Start - 20-Pin HTSSOP Package - Thermal Shut Down 2 Applications - Automotive Telematics - Navigation Systems - In-Dash Instrumentation - Battery-Powered Applications - Standby Power for Home Gateways and Set-Top Boxes 3 Description The LM26003 is a switching regulator designed for the high-efficiency requirements of applications with standby modes. The device features a low-current sleep mode to maintain efficiency under light-load conditions and current-mode control for accurate regulation over a wide input voltage range. Quiescent current is reduced to 10.8 µA typically in shutdown mode and less than 40 µA in sleep mode. Forced PWM mode is also available to disable sleep mode. The LM26003 device can deliver up to 3 A of continuous load current with a fixed current limit, through the internal N-channel switch. The part has a wide input voltage range of 4.0 V to 38 V and can operate with input voltages as low as 3 V during line transients. Operating frequency is adjustable from 150 k Hz to 500 k Hz with a single resistor and can be synchronized to an external clock. Other features include Power Good, adjustable softstart, enable pin, input undervoltage protection, and an internal bootstrap diode for reduced ponent count. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM26003 LM26003-Q1 HTSSOP (20) 6.50 mm x 4.40 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. 4 Typical Application Circuit VIN C9 PGOOD R4 VDD...