LM26003QMHX

• LM26003Q is automotive grade and AEC-Q100 qualified (-40°C to +125°C operating junction temperature)
• Efficient sleep mode
• 40 μA typical IQ in sleep mode
• An IQ of 10.8μA (typical) in shutdown mode
• 3.0V minimum input voltage
• Continuous input range from 4.0V to 38V
• 1.5% reference accuracy
• Cycle-by-cycle current limit
• Adjustable frequency (from 150 kHz to 500 kHz)
• Synchronize to an external clock
• Power good flag
• Mandatory PWM function
• Adjustable soft-start
• TSSOP-20 package with exposed pads
• Thermal shutdown

illustrate

The LM26003 is a switching regulator designed for high efficiency requirements in standby mode. The device features low-current sleep mode to maintain light load conditions and current-mode control to precisely regulate efficiency over a wide input voltage range. Quiescent current is reduced to 10.8μA in typical shutdown mode and less than 40μA in sleep mode. Forced PWM mode can also disable sleep mode.

The LM26003 can deliver up to 3A of continuous load current with a fixed current limit through an internal N-channel switch. The section has a wide input voltage range of 4.0V to 38V and can operate with an input voltage of 3V during low-line transients.

The operating frequency is adjustable from a single resistor from 150 kHz to 500 kHz and can be synchronized to an external clock.

Other features include a good power supply, adjustable soft-start, enable pins, input undervoltage protection, and an internal bootstrap diode to reduce component count.

apply

• Automotive telematics
• Navigation system
• In instrumentation
• Battery-powered applications
• The standby power is home gateway/set-top box